mybatis -mysql -分页拦截器
2016-08-31 17:30
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1 拦截器：jsqlparser-0.9.4.jar
/*
* The MIT License (MIT)
*
* Copyright (c) 2014 abel533@gmail.com
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.github.pagehelper;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.plugin.*;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;
import javax.sql.DataSource;
import java.lang.reflect.Method;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.ReentrantLock;
/**
* Mybatis - 通用分页拦截器
*
* @author liuzh/abel533/isea533
* @version 3.3.0
* 项目地址 : http://git.oschina.net/free/Mybatis_PageHelper
*/
@SuppressWarnings("rawtypes")
@Intercepts(@Signature(type = Executor.class, method = "query", args = {MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class}))
public class PageHelper implements Interceptor {
//sql工具类
private SqlUtil sqlUtil;
//属性参数信息
private Properties properties;
//配置对象方式
private SqlUtilConfig sqlUtilConfig;
//自动获取dialect,如果没有setProperties或setSqlUtilConfig，也可以正常进行
private boolean autoDialect = true;
//运行时自动获取dialect
private boolean autoRuntimeDialect;
//多数据源时，获取jdbcurl后是否关闭数据源
private boolean closeConn = true;
//缓存
private Map<String, SqlUtil> urlSqlUtilMap = new ConcurrentHashMap<String, SqlUtil>();
/**
* 获取任意查询方法的count总数
*
* @param select
* @return
*/
public static long count(ISelect select) {
Page<?> page = startPage(1, -1, true);
select.doSelect();
return page.getTotal();
}
/**
* 开始分页
*
* @param pageNum 页码
* @param pageSize 每页显示数量
*/
public static <E> Page<E> startPage(int pageNum, int pageSize) {
return startPage(pageNum, pageSize, true);
}
/**
* 开始分页
*
* @param pageNum 页码
* @param pageSize 每页显示数量
* @param count 是否进行count查询
*/
public static <E> Page<E> startPage(int pageNum, int pageSize, boolean count) {
return startPage(pageNum, pageSize, count, null);
}
/**
* 开始分页
*
* @param pageNum 页码
* @param pageSize 每页显示数量
* @param orderBy 排序
*/
public static <E> Page<E> startPage(int pageNum, int pageSize, String orderBy) {
Page<E> page = startPage(pageNum, pageSize);
page.setOrderBy(orderBy);
return page;
}
/**
* 开始分页
*
* @param offset 页码
* @param limit 每页显示数量
*/
public static <E> Page<E> offsetPage(int offset, int limit) {
return offsetPage(offset, limit, true);
}
/**
* 开始分页
*
* @param offset 页码
* @param limit 每页显示数量
* @param count 是否进行count查询
*/
public static <E> Page<E> offsetPage(int offset, int limit, boolean count) {
Page<E> page = new Page<E>(new int[]{offset, limit}, count);
//当已经执行过orderBy的时候
Page<E> oldPage = SqlUtil.getLocalPage();
if (oldPage != null && oldPage.isOrderByOnly()) {
page.setOrderBy(oldPage.getOrderBy());
}
SqlUtil.setLocalPage(page);
return page;
}
/**
* 开始分页
*
* @param offset 页码
* @param limit 每页显示数量
* @param orderBy 排序
*/
public static <E> Page<E> offsetPage(int offset, int limit, String orderBy) {
Page<E> page = offsetPage(offset, limit);
page.setOrderBy(orderBy);
return page;
}
/**
* 开始分页
*
* @param pageNum 页码
* @param pageSize 每页显示数量
* @param count 是否进行count查询
* @param reasonable 分页合理化,null时用默认配置
*/
public static <E> Page<E> startPage(int pageNum, int pageSize, boolean count, Boolean reasonable) {
return startPage(pageNum, pageSize, count, reasonable, null);
}
/**
* 开始分页
*
* @param pageNum 页码
* @param pageSize 每页显示数量
* @param count 是否进行count查询
* @param reasonable 分页合理化,null时用默认配置
* @param pageSizeZero true且pageSize=0时返回全部结果，false时分页,null时用默认配置
*/
public static <E> Page<E> startPage(int pageNum, int pageSize, boolean count, Boolean reasonable, Boolean pageSizeZero) {
Page<E> page = new Page<E>(pageNum, pageSize, count);
page.setReasonable(reasonable);
page.setPageSizeZero(pageSizeZero);
//当已经执行过orderBy的时候
Page<E> oldPage = SqlUtil.getLocalPage();
if (oldPage != null && oldPage.isOrderByOnly()) {
page.setOrderBy(oldPage.getOrderBy());
}
SqlUtil.setLocalPage(page);
return page;
}
/**
* 开始分页
*
* @param params
*/
public static <E> Page<E> startPage(Object params) {
Page<E> page = SqlUtil.getPageFromObject(params);
//当已经执行过orderBy的时候
Page<E> oldPage = SqlUtil.getLocalPage();
if (oldPage != null && oldPage.isOrderByOnly()) {
page.setOrderBy(oldPage.getOrderBy());
}
SqlUtil.setLocalPage(page);
return page;
}
/**
* 排序
*
* @param orderBy
*/
public static void orderBy(String orderBy) {
Page<?> page = SqlUtil.getLocalPage();
if (page != null) {
page.setOrderBy(orderBy);
} else {
page = new Page();
page.setOrderBy(orderBy);
page.setOrderByOnly(true);
SqlUtil.setLocalPage(page);
}
}
/**
* 获取orderBy
*
* @return
*/
public static String getOrderBy() {
Page<?> page = SqlUtil.getLocalPage();
if (page != null) {
String orderBy = page.getOrderBy();
if (StringUtil.isEmpty(orderBy)) {
return null;
} else {
return orderBy;
}
}
return null;
}
/**
* Mybatis拦截器方法
*
* @param invocation 拦截器入参
* @return 返回执行结果
* @throws Throwable 抛出异常
*/
public Object intercept(Invocation invocation) throws Throwable {
if (autoRuntimeDialect) {
SqlUtil sqlUtil = getSqlUtil(invocation);
return sqlUtil.processPage(invocation);
} else {
if (autoDialect) {
initSqlUtil(invocation);
}
return sqlUtil.processPage(invocation);
}
}
/**
* 初始化sqlUtil
*
* @param invocation
*/
public synchronized void initSqlUtil(Invocation invocation) {
if (this.sqlUtil == null) {
this.sqlUtil = getSqlUtil(invocation);
if (!autoRuntimeDialect) {
properties = null;
sqlUtilConfig = null;
}
autoDialect = false;
}
}
/**
* 获取url
*
* @param dataSource
* @return
*/
public String getUrl(DataSource dataSource){
Connection conn = null;
try {
conn = dataSource.getConnection();
return conn.getMetaData().getURL();
} catch (SQLException e) {
throw new RuntimeException(e);
} finally {
if(conn != null){
try {
if(closeConn){
conn.close();
}
} catch (SQLException e) {
//ignore
}
}
}
}
/**
* 根据daatsource创建对应的sqlUtil
*
* @param invocation
*/
public SqlUtil getSqlUtil(Invocation invocation) {
MappedStatement ms = (MappedStatement) invocation.getArgs()[0];
//改为对dataSource做缓存
DataSource dataSource = ms.getConfiguration().getEnvironment().getDataSource();
String url = getUrl(dataSource);
if (urlSqlUtilMap.containsKey(url)) {
return urlSqlUtilMap.get(url);
}
ReentrantLock lock = new ReentrantLock();
try {
lock.lock();
if (urlSqlUtilMap.containsKey(url)) {
return urlSqlUtilMap.get(url);
}
if (StringUtil.isEmpty(url)) {
throw new RuntimeException("无法自动获取jdbcUrl，请在分页插件中配置dialect参数!");
}
String dialect = Dialect.fromJdbcUrl(url);
if (dialect == null) {
throw new RuntimeException("无法自动获取数据库类型，请通过dialect参数指定!");
}
SqlUtil sqlUtil = new SqlUtil(dialect);
if (this.properties != null) {
sqlUtil.setProperties(properties);
} else if (this.sqlUtilConfig != null) {
sqlUtil.setSqlUtilConfig(this.sqlUtilConfig);
}
urlSqlUtilMap.put(url, sqlUtil);
return sqlUtil;
} finally {
lock.unlock();
}
}
/**
* 只拦截Executor
*
* @param target
* @return
*/
public Object plugin(Object target) {
if (target instanceof Executor) {
return Plugin.wrap(target, this);
} else {
return target;
}
}
private void checkVersion() {
//MyBatis3.2.0版本校验
try {
Class.forName("org.apache.ibatis.scripting.xmltags.SqlNode");//SqlNode是3.2.0之后新增的类
} catch (ClassNotFoundException e) {
throw new RuntimeException("您使用的MyBatis版本太低，MyBatis分页插件PageHelper支持MyBatis3.2.0及以上版本!");
}
}
/**
* 设置属性值
*
* @param p 属性值
*/
public void setProperties(Properties p) {
checkVersion();
//多数据源时，获取jdbcurl后是否关闭数据源
String closeConn = p.getProperty("closeConn");
//解决#97
if(StringUtil.isNotEmpty(closeConn)){
this.closeConn = Boolean.parseBoolean(closeConn);
}
//数据库方言
String dialect = p.getProperty("dialect");
String runtimeDialect = p.getProperty("autoRuntimeDialect");
if (StringUtil.isNotEmpty(runtimeDialect) && runtimeDialect.equalsIgnoreCase("TRUE")) {
this.autoRuntimeDialect = true;
this.autoDialect = false;
this.properties = p;
} else if (StringUtil.isEmpty(dialect)) {
autoDialect = true;
this.properties = p;
} else {
autoDialect = false;
sqlUtil = new SqlUtil(dialect);
sqlUtil.setProperties(p);
}
}
/**
* 设置属性值
*
* @param config
*/
public void setSqlUtilConfig(SqlUtilConfig config) {
checkVersion();
//多数据源时，获取jdbcurl后是否关闭数据源
this.closeConn = config.isCloseConn();
if (config.isAutoRuntimeDialect()) {
this.autoRuntimeDialect = true;
this.autoDialect = false;
this.sqlUtilConfig = config;
} else if (StringUtil.isEmpty(config.getDialect())) {
autoDialect = true;
this.sqlUtilConfig = config;
} else {
autoDialect = false;
sqlUtil = new SqlUtil(config.getDialect());
sqlUtil.setSqlUtilConfig(config);
}
}
}
2 返回对象
/*
* The MIT License (MIT)
*
* Copyright (c) 2014 abel533@gmail.com
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.github.pagehelper;
import java.io.Serializable;
import java.util.Collection;
import java.util.List;
/**
* 对Page<E>结果进行包装
* <p/>
* 新增分页的多项属性，主要参考:http://bbs.csdn.net/topics/360010907
*
* @author liuzh/abel533/isea533
* @version 3.3.0
* @since 3.2.2
* 项目地址 : http://git.oschina.net/free/Mybatis_PageHelper
*/
@SuppressWarnings({"rawtypes", "unchecked"})
public class PageInfo<T> implements Serializable {
private static final long serialVersionUID = 1L;
//当前页
private int pageNum;
//每页的数量
private int pageSize;
//当前页的数量
private int size;
//排序
private String orderBy;
//由于startRow和endRow不常用，这里说个具体的用法
//可以在页面中"显示startRow到endRow 共size条数据"
//当前页面第一个元素在数据库中的行号
private int startRow;
//当前页面最后一个元素在数据库中的行号
private int endRow;
//总记录数
private long total;
//总页数
private int pages;
//结果集
private List<T> list;
//第一页
private int firstPage;
//前一页
private int prePage;
//下一页
private int nextPage;
//最后一页
private int lastPage;
//是否为第一页
private boolean isFirstPage = false;
//是否为最后一页
private boolean isLastPage = false;
//是否有前一页
private boolean hasPreviousPage = false;
//是否有下一页
private boolean hasNextPage = false;
//导航页码数
private int navigatePages;
//所有导航页号
private int[] navigatepageNums;
public PageInfo() {
}
/**
* 包装Page对象
*
* @param list
*/
public PageInfo(List<T> list) {
this(list, 8);
}
/**
* 包装Page对象
*
* @param list page结果
* @param navigatePages 页码数量
*/
public PageInfo(List<T> list, int navigatePages) {
if (list instanceof Page) {
Page page = (Page) list;
this.pageNum = page.getPageNum();
this.pageSize = page.getPageSize();
this.orderBy = page.getOrderBy();
this.pages = page.getPages();
this.list = page;
this.size = page.size();
this.total = page.getTotal();
//由于结果是>startRow的，所以实际的需要+1
if (this.size == 0) {
this.startRow = 0;
this.endRow = 0;
} else {
this.startRow = page.getStartRow() + 1;
//计算实际的endRow（最后一页的时候特殊）
this.endRow = this.startRow - 1 + this.size;
}
} else if (list instanceof Collection) {
this.pageNum = 1;
this.pageSize = list.size();
this.pages = 1;
this.list = list;
this.size = list.size();
this.total = list.size();
this.startRow = 0;
this.endRow = list.size() > 0 ? list.size() - 1 : 0;
}
if (list instanceof Collection) {
this.navigatePages = navigatePages;
//计算导航页
calcNavigatepageNums();
//计算前后页，第一页，最后一页
calcPage();
//判断页面边界
judgePageBoudary();
}
}
/**
* 计算导航页
*/
private void calcNavigatepageNums() {
//当总页数小于或等于导航页码数时
if (pages <= navigatePages) {
navigatepageNums = new int[pages];
for (int i = 0; i < pages; i++) {
navigatepageNums[i] = i + 1;
}
} else { //当总页数大于导航页码数时
navigatepageNums = new int[navigatePages];
int startNum = pageNum - navigatePages / 2;
int endNum = pageNum + navigatePages / 2;
if (startNum < 1) {
startNum = 1;
//(最前navigatePages页
for (int i = 0; i < navigatePages; i++) {
navigatepageNums[i] = startNum++;
}
} else if (endNum > pages) {
endNum = pages;
//最后navigatePages页
for (int i = navigatePages - 1; i >= 0; i--) {
navigatepageNums[i] = endNum--;
}
} else {
//所有中间页
for (int i = 0; i < navigatePages; i++) {
navigatepageNums[i] = startNum++;
}
}
}
}
/**
* 计算前后页，第一页，最后一页
*/
private void calcPage() {
if (navigatepageNums != null && navigatepageNums.length > 0) {
firstPage = navigatepageNums[0];
lastPage = navigatepageNums[navigatepageNums.length - 1];
if (pageNum > 1) {
prePage = pageNum - 1;
}
if (pageNum < pages) {
nextPage = pageNum + 1;
}
}
}
/**
* 判定页面边界
*/
private void judgePageBoudary() {
isFirstPage = pageNum == 1;
isLastPage = pageNum == pages;
hasPreviousPage = pageNum > 1;
hasNextPage = pageNum < pages;
}
public int getPageNum() {
return pageNum;
}
public void setPageNum(int pageNum) {
this.pageNum = pageNum;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public int getSize() {
return size;
}
public void setSize(int size) {
this.size = size;
}
public String getOrderBy() {
return orderBy;
}
public void setOrderBy(String orderBy) {
this.orderBy = orderBy;
}
public int getStartRow() {
return startRow;
}
public void setStartRow(int startRow) {
this.startRow = startRow;
}
public int getEndRow() {
return endRow;
}
public void setEndRow(int endRow) {
this.endRow = endRow;
}
public long getTotal() {
return total;
}
public void setTotal(long total) {
this.total = total;
}
public int getPages() {
return pages;
}
public void setPages(int pages) {
this.pages = pages;
}
public List<T> getList() {
return list;
}
public void setList(List<T> list) {
this.list = list;
}
public int getFirstPage() {
return firstPage;
}
public void setFirstPage(int firstPage) {
this.firstPage = firstPage;
}
public int getPrePage() {
return prePage;
}
public void setPrePage(int prePage) {
this.prePage = prePage;
}
public int getNextPage() {
return nextPage;
}
public void setNextPage(int nextPage) {
this.nextPage = nextPage;
}
public int getLastPage() {
return lastPage;
}
public void setLastPage(int lastPage) {
this.lastPage = lastPage;
}
public boolean isIsFirstPage() {
return isFirstPage;
}
public void setIsFirstPage(boolean isFirstPage) {
this.isFirstPage = isFirstPage;
}
public boolean isIsLastPage() {
return isLastPage;
}
public void setIsLastPage(boolean isLastPage) {
this.isLastPage = isLastPage;
}
public boolean isHasPreviousPage() {
return hasPreviousPage;
}
public void setHasPreviousPage(boolean hasPreviousPage) {
this.hasPreviousPage = hasPreviousPage;
}
public boolean isHasNextPage() {
return hasNextPage;
}
public void setHasNextPage(boolean hasNextPage) {
this.hasNextPage = hasNextPage;
}
public int getNavigatePages() {
return navigatePages;
}
public void setNavigatePages(int navigatePages) {
this.navigatePages = navigatePages;
}
public int[] getNavigatepageNums() {
return navigatepageNums;
}
public void setNavigatepageNums(int[] navigatepageNums) {
this.navigatepageNums = navigatepageNums;
}
@Override
public String toString() {
final StringBuffer sb = new StringBuffer("PageInfo{");
sb.append("pageNum=").append(pageNum);
sb.append(", pageSize=").append(pageSize);
sb.append(", size=").append(size);
sb.append(", startRow=").append(startRow);
sb.append(", endRow=").append(endRow);
sb.append(", total=").append(total);
sb.append(", pages=").append(pages);
sb.append(", list=").append(list);
sb.append(", firstPage=").append(firstPage);
sb.append(", prePage=").append(prePage);
sb.append(", nextPage=").append(nextPage);
sb.append(", lastPage=").append(lastPage);
sb.append(", isFirstPage=").append(isFirstPage);
sb.append(", isLastPage=").append(isLastPage);
sb.append(", hasPreviousPage=").append(hasPreviousPage);
sb.append(", hasNextPage=").append(hasNextPage);
sb.append(", navigatePages=").append(navigatePages);
sb.append(", navigatepageNums=");
if (navigatepageNums == null) sb.append("null");
else {
sb.append('[');
for (int i = 0; i < navigatepageNums.length; ++i)
sb.append(i == 0 ? "" : ", ").append(navigatepageNums[i]);
sb.append(']');
}
sb.append('}');
return sb.toString();
}
}
3 mybatis -xml 文件配置：
<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
">
<jee:jndi-lookup id="dataSource" resource-ref="true" jndi-name="jdbc/fb2b" />
<!-- JNDI方式配置数据源 -->
<!-- <bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean"> <property name="jndiName" value="${jndiName}"></property> </bean> -->
<!-- ========================================配置数据源========================================= -->
<!-- 配置数据源，使用的是alibaba的Druid(德鲁伊)数据源 -->
<!-- <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
<property name="url" value="${jdbc_url}" />
<property name="username" value="${jdbc_username}" />
<property name="password" value="${jdbc_password}" />
初始化连接大小
<property name="initialSize" value="0" />
连接池最大使用连接数量
<property name="maxActive" value="20" />
连接池最大空闲
<property name="maxIdle" value="20" />
连接池最小空闲
<property name="minIdle" value="0" />
获取连接最大等待时间
<property name="maxWait" value="60000" />
<property name="poolPreparedStatements" value="true" />
<property name="maxPoolPreparedStatementPerConnectionSize" value="33" />
<property name="validationQuery" value="${validationQuery}" />
<property name="testOnBorrow" value="false" />
<property name="testOnReturn" value="false" />
<property name="testWhileIdle" value="true" />
配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
<property name="timeBetweenEvictionRunsMillis" value="60000" />
配置一个连接在池中最小生存的时间，单位是毫秒
<property name="minEvictableIdleTimeMillis" value="25200000" />
打开removeAbandoned功能
<property name="removeAbandoned" value="true" />
1800秒，也就是30分钟
<property name="removeAbandonedTimeout" value="1800" />
关闭abanded连接时输出错误日志
<property name="logAbandoned" value="true" />
监控数据库
<property name="filters" value="stat" />
<property name="filters" value="mergeStat" />
</bean> -->
<!-- ========================================分隔线========================================= -->
<!-- ========================================针对myBatis的配置项============================== -->
<!-- 配置sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 实例化sqlSessionFactory时需要使用上述配置好的数据源以及SQL映射文件 -->
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描cn/softmr/account/mapping/目录下的所有SQL映射的xml文件, 省掉Configuration.xml里的手工配置
value="classpath:cn/softmr/account/mapping/*.xml"指的是classpath(类路径)下cn.softmr.account.mapping包中的所有xml文件
UserMapper.xml位于cn.softmr.account.mapping包下，这样UserMapper.xml就可以被自动扫描
-->
<property name="mapperLocations" value="classpath:cn/softmr/*/*/mapping/*.xml" />
<property name="plugins">
<array>
<bean class="com.github.pagehelper.PageHelper">
<property name="properties">
<value>
dialect=mysql
</value>
</property>
</bean>
</array>
</property>
</bean>
<!-- 配置扫描器 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 扫描cn.softmr.account.dao这个包以及它的子包下的所有映射接口类 -->
<property name="basePackage" value="cn.softmr.*.*.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>
<!-- ========================================分隔线========================================= -->
<!-- 配置Spring的事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 注解方式配置事物 -->
<!-- <tx:annotation-driven transaction-manager="transactionManager" /> -->
<!-- 拦截器方式配置事物 -->
<tx:advice id="transactionAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="append*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="modify*" propagation="REQUIRED" />
<tx:method name="edit*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="repair" propagation="REQUIRED" />
<tx:method name="delAndRepair" propagation="REQUIRED" />
<tx:method name="get*" propagation="SUPPORTS" />
<tx:method name="find*" propagation="SUPPORTS" />
<tx:method name="load*" propagation="SUPPORTS" />
<tx:method name="search*" propagation="SUPPORTS" />
<tx:method name="datagrid*" propagation="SUPPORTS" />
<tx:method name="*" propagation="REQUIRED" />
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="transactionPointcut" expression="execution(* cn.softmr.*.*.service..*Impl.*(..))" />
<aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice" />
</aop:config>
<!-- 配置druid监控spring jdbc -->
<bean id="druid-stat-interceptor" class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor">
</bean>
<bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut" scope="prototype">
<property name="patterns">
<list>
<value>cn.softmr.*.service.*</value>
</list>
</property>
</bean>
<aop:config>
<aop:advisor advice-ref="druid-stat-interceptor" pointcut-ref="druid-stat-pointcut" />
</aop:config>
</beans>
4 service
@Override
public PageInfo<ProdPropMeta> searchProdPropMetaPage(
ProdPropMetaExample example, int pageno, int pagesize) {
// TODO Auto-generated method stub
PageHelper.startPage(pageno,pagesize);
List<ProdPropMeta> list = prodPropMetaMapper.selectByExample(example);
return new PageInfo<ProdPropMeta>(list);
}
5 controler
/**
* 查询分页
* @param ProdPropMeta
* @param pageno
* @param pagesize
* @return
*/
@RequestMapping(value = "/searchProdPropMetaPage")
@ResponseBody
public PageInfo<ProdPropMeta> searchProdPropMetaPage(@RequestParam("propName") String propName,
@RequestParam("pageno") int pageno,@RequestParam("pagesize") int pagesize) {
ProdPropMetaExample prodPropMetaExample=new ProdPropMetaExample();
if(!StringUtils.isBlank(propName)){
prodPropMetaExample.createCriteria().andProdPropNameLike(propName+"%");
}
prodPropMetaExample.setOrderByClause(" PROD_PROP_ID DESC ");
PageInfo<ProdPropMeta> list = prodPropMetaService.searchProdPropMetaPage(prodPropMetaExample,pageno,pagesize);
return list;
}
/*
* The MIT License (MIT)
*
* Copyright (c) 2014 abel533@gmail.com
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.github.pagehelper;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.plugin.*;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;
import javax.sql.DataSource;
import java.lang.reflect.Method;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.ReentrantLock;
/**
* Mybatis - 通用分页拦截器
*
* @author liuzh/abel533/isea533
* @version 3.3.0
* 项目地址 : http://git.oschina.net/free/Mybatis_PageHelper
*/
@SuppressWarnings("rawtypes")
@Intercepts(@Signature(type = Executor.class, method = "query", args = {MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class}))
public class PageHelper implements Interceptor {
//sql工具类
private SqlUtil sqlUtil;
//属性参数信息
private Properties properties;
//配置对象方式
private SqlUtilConfig sqlUtilConfig;
//自动获取dialect,如果没有setProperties或setSqlUtilConfig，也可以正常进行
private boolean autoDialect = true;
//运行时自动获取dialect
private boolean autoRuntimeDialect;
//多数据源时，获取jdbcurl后是否关闭数据源
private boolean closeConn = true;
//缓存
private Map<String, SqlUtil> urlSqlUtilMap = new ConcurrentHashMap<String, SqlUtil>();
/**
* 获取任意查询方法的count总数
*
* @param select
* @return
*/
public static long count(ISelect select) {
Page<?> page = startPage(1, -1, true);
select.doSelect();
return page.getTotal();
}
/**
* 开始分页
*
* @param pageNum 页码
* @param pageSize 每页显示数量
*/
public static <E> Page<E> startPage(int pageNum, int pageSize) {
return startPage(pageNum, pageSize, true);
}
/**
* 开始分页
*
* @param pageNum 页码
* @param pageSize 每页显示数量
* @param count 是否进行count查询
*/
public static <E> Page<E> startPage(int pageNum, int pageSize, boolean count) {
return startPage(pageNum, pageSize, count, null);
}
/**
* 开始分页
*
* @param pageNum 页码
* @param pageSize 每页显示数量
* @param orderBy 排序
*/
public static <E> Page<E> startPage(int pageNum, int pageSize, String orderBy) {
Page<E> page = startPage(pageNum, pageSize);
page.setOrderBy(orderBy);
return page;
}
/**
* 开始分页
*
* @param offset 页码
* @param limit 每页显示数量
*/
public static <E> Page<E> offsetPage(int offset, int limit) {
return offsetPage(offset, limit, true);
}
/**
* 开始分页
*
* @param offset 页码
* @param limit 每页显示数量
* @param count 是否进行count查询
*/
public static <E> Page<E> offsetPage(int offset, int limit, boolean count) {
Page<E> page = new Page<E>(new int[]{offset, limit}, count);
//当已经执行过orderBy的时候
Page<E> oldPage = SqlUtil.getLocalPage();
if (oldPage != null && oldPage.isOrderByOnly()) {
page.setOrderBy(oldPage.getOrderBy());
}
SqlUtil.setLocalPage(page);
return page;
}
/**
* 开始分页
*
* @param offset 页码
* @param limit 每页显示数量
* @param orderBy 排序
*/
public static <E> Page<E> offsetPage(int offset, int limit, String orderBy) {
Page<E> page = offsetPage(offset, limit);
page.setOrderBy(orderBy);
return page;
}
/**
* 开始分页
*
* @param pageNum 页码
* @param pageSize 每页显示数量
* @param count 是否进行count查询
* @param reasonable 分页合理化,null时用默认配置
*/
public static <E> Page<E> startPage(int pageNum, int pageSize, boolean count, Boolean reasonable) {
return startPage(pageNum, pageSize, count, reasonable, null);
}
/**
* 开始分页
*
* @param pageNum 页码
* @param pageSize 每页显示数量
* @param count 是否进行count查询
* @param reasonable 分页合理化,null时用默认配置
* @param pageSizeZero true且pageSize=0时返回全部结果，false时分页,null时用默认配置
*/
public static <E> Page<E> startPage(int pageNum, int pageSize, boolean count, Boolean reasonable, Boolean pageSizeZero) {
Page<E> page = new Page<E>(pageNum, pageSize, count);
page.setReasonable(reasonable);
page.setPageSizeZero(pageSizeZero);
//当已经执行过orderBy的时候
Page<E> oldPage = SqlUtil.getLocalPage();
if (oldPage != null && oldPage.isOrderByOnly()) {
page.setOrderBy(oldPage.getOrderBy());
}
SqlUtil.setLocalPage(page);
return page;
}
/**
* 开始分页
*
* @param params
*/
public static <E> Page<E> startPage(Object params) {
Page<E> page = SqlUtil.getPageFromObject(params);
//当已经执行过orderBy的时候
Page<E> oldPage = SqlUtil.getLocalPage();
if (oldPage != null && oldPage.isOrderByOnly()) {
page.setOrderBy(oldPage.getOrderBy());
}
SqlUtil.setLocalPage(page);
return page;
}
/**
* 排序
*
* @param orderBy
*/
public static void orderBy(String orderBy) {
Page<?> page = SqlUtil.getLocalPage();
if (page != null) {
page.setOrderBy(orderBy);
} else {
page = new Page();
page.setOrderBy(orderBy);
page.setOrderByOnly(true);
SqlUtil.setLocalPage(page);
}
}
/**
* 获取orderBy
*
* @return
*/
public static String getOrderBy() {
Page<?> page = SqlUtil.getLocalPage();
if (page != null) {
String orderBy = page.getOrderBy();
if (StringUtil.isEmpty(orderBy)) {
return null;
} else {
return orderBy;
}
}
return null;
}
/**
* Mybatis拦截器方法
*
* @param invocation 拦截器入参
* @return 返回执行结果
* @throws Throwable 抛出异常
*/
public Object intercept(Invocation invocation) throws Throwable {
if (autoRuntimeDialect) {
SqlUtil sqlUtil = getSqlUtil(invocation);
return sqlUtil.processPage(invocation);
} else {
if (autoDialect) {
initSqlUtil(invocation);
}
return sqlUtil.processPage(invocation);
}
}
/**
* 初始化sqlUtil
*
* @param invocation
*/
public synchronized void initSqlUtil(Invocation invocation) {
if (this.sqlUtil == null) {
this.sqlUtil = getSqlUtil(invocation);
if (!autoRuntimeDialect) {
properties = null;
sqlUtilConfig = null;
}
autoDialect = false;
}
}
/**
* 获取url
*
* @param dataSource
* @return
*/
public String getUrl(DataSource dataSource){
Connection conn = null;
try {
conn = dataSource.getConnection();
return conn.getMetaData().getURL();
} catch (SQLException e) {
throw new RuntimeException(e);
} finally {
if(conn != null){
try {
if(closeConn){
conn.close();
}
} catch (SQLException e) {
//ignore
}
}
}
}
/**
* 根据daatsource创建对应的sqlUtil
*
* @param invocation
*/
public SqlUtil getSqlUtil(Invocation invocation) {
MappedStatement ms = (MappedStatement) invocation.getArgs()[0];
//改为对dataSource做缓存
DataSource dataSource = ms.getConfiguration().getEnvironment().getDataSource();
String url = getUrl(dataSource);
if (urlSqlUtilMap.containsKey(url)) {
return urlSqlUtilMap.get(url);
}
ReentrantLock lock = new ReentrantLock();
try {
lock.lock();
if (urlSqlUtilMap.containsKey(url)) {
return urlSqlUtilMap.get(url);
}
if (StringUtil.isEmpty(url)) {
throw new RuntimeException("无法自动获取jdbcUrl，请在分页插件中配置dialect参数!");
}
String dialect = Dialect.fromJdbcUrl(url);
if (dialect == null) {
throw new RuntimeException("无法自动获取数据库类型，请通过dialect参数指定!");
}
SqlUtil sqlUtil = new SqlUtil(dialect);
if (this.properties != null) {
sqlUtil.setProperties(properties);
} else if (this.sqlUtilConfig != null) {
sqlUtil.setSqlUtilConfig(this.sqlUtilConfig);
}
urlSqlUtilMap.put(url, sqlUtil);
return sqlUtil;
} finally {
lock.unlock();
}
}
/**
* 只拦截Executor
*
* @param target
* @return
*/
public Object plugin(Object target) {
if (target instanceof Executor) {
return Plugin.wrap(target, this);
} else {
return target;
}
}
private void checkVersion() {
//MyBatis3.2.0版本校验
try {
Class.forName("org.apache.ibatis.scripting.xmltags.SqlNode");//SqlNode是3.2.0之后新增的类
} catch (ClassNotFoundException e) {
throw new RuntimeException("您使用的MyBatis版本太低，MyBatis分页插件PageHelper支持MyBatis3.2.0及以上版本!");
}
}
/**
* 设置属性值
*
* @param p 属性值
*/
public void setProperties(Properties p) {
checkVersion();
//多数据源时，获取jdbcurl后是否关闭数据源
String closeConn = p.getProperty("closeConn");
//解决#97
if(StringUtil.isNotEmpty(closeConn)){
this.closeConn = Boolean.parseBoolean(closeConn);
}
//数据库方言
String dialect = p.getProperty("dialect");
String runtimeDialect = p.getProperty("autoRuntimeDialect");
if (StringUtil.isNotEmpty(runtimeDialect) && runtimeDialect.equalsIgnoreCase("TRUE")) {
this.autoRuntimeDialect = true;
this.autoDialect = false;
this.properties = p;
} else if (StringUtil.isEmpty(dialect)) {
autoDialect = true;
this.properties = p;
} else {
autoDialect = false;
sqlUtil = new SqlUtil(dialect);
sqlUtil.setProperties(p);
}
}
/**
* 设置属性值
*
* @param config
*/
public void setSqlUtilConfig(SqlUtilConfig config) {
checkVersion();
//多数据源时，获取jdbcurl后是否关闭数据源
this.closeConn = config.isCloseConn();
if (config.isAutoRuntimeDialect()) {
this.autoRuntimeDialect = true;
this.autoDialect = false;
this.sqlUtilConfig = config;
} else if (StringUtil.isEmpty(config.getDialect())) {
autoDialect = true;
this.sqlUtilConfig = config;
} else {
autoDialect = false;
sqlUtil = new SqlUtil(config.getDialect());
sqlUtil.setSqlUtilConfig(config);
}
}
}
2 返回对象
/*
* The MIT License (MIT)
*
* Copyright (c) 2014 abel533@gmail.com
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.github.pagehelper;
import java.io.Serializable;
import java.util.Collection;
import java.util.List;
/**
* 对Page<E>结果进行包装
* <p/>
* 新增分页的多项属性，主要参考:http://bbs.csdn.net/topics/360010907
*
* @author liuzh/abel533/isea533
* @version 3.3.0
* @since 3.2.2
* 项目地址 : http://git.oschina.net/free/Mybatis_PageHelper
*/
@SuppressWarnings({"rawtypes", "unchecked"})
public class PageInfo<T> implements Serializable {
private static final long serialVersionUID = 1L;
//当前页
private int pageNum;
//每页的数量
private int pageSize;
//当前页的数量
private int size;
//排序
private String orderBy;
//由于startRow和endRow不常用，这里说个具体的用法
//可以在页面中"显示startRow到endRow 共size条数据"
//当前页面第一个元素在数据库中的行号
private int startRow;
//当前页面最后一个元素在数据库中的行号
private int endRow;
//总记录数
private long total;
//总页数
private int pages;
//结果集
private List<T> list;
//第一页
private int firstPage;
//前一页
private int prePage;
//下一页
private int nextPage;
//最后一页
private int lastPage;
//是否为第一页
private boolean isFirstPage = false;
//是否为最后一页
private boolean isLastPage = false;
//是否有前一页
private boolean hasPreviousPage = false;
//是否有下一页
private boolean hasNextPage = false;
//导航页码数
private int navigatePages;
//所有导航页号
private int[] navigatepageNums;
public PageInfo() {
}
/**
* 包装Page对象
*
* @param list
*/
public PageInfo(List<T> list) {
this(list, 8);
}
/**
* 包装Page对象
*
* @param list page结果
* @param navigatePages 页码数量
*/
public PageInfo(List<T> list, int navigatePages) {
if (list instanceof Page) {
Page page = (Page) list;
this.pageNum = page.getPageNum();
this.pageSize = page.getPageSize();
this.orderBy = page.getOrderBy();
this.pages = page.getPages();
this.list = page;
this.size = page.size();
this.total = page.getTotal();
//由于结果是>startRow的，所以实际的需要+1
if (this.size == 0) {
this.startRow = 0;
this.endRow = 0;
} else {
this.startRow = page.getStartRow() + 1;
//计算实际的endRow（最后一页的时候特殊）
this.endRow = this.startRow - 1 + this.size;
}
} else if (list instanceof Collection) {
this.pageNum = 1;
this.pageSize = list.size();
this.pages = 1;
this.list = list;
this.size = list.size();
this.total = list.size();
this.startRow = 0;
this.endRow = list.size() > 0 ? list.size() - 1 : 0;
}
if (list instanceof Collection) {
this.navigatePages = navigatePages;
//计算导航页
calcNavigatepageNums();
//计算前后页，第一页，最后一页
calcPage();
//判断页面边界
judgePageBoudary();
}
}
/**
* 计算导航页
*/
private void calcNavigatepageNums() {
//当总页数小于或等于导航页码数时
if (pages <= navigatePages) {
navigatepageNums = new int[pages];
for (int i = 0; i < pages; i++) {
navigatepageNums[i] = i + 1;
}
} else { //当总页数大于导航页码数时
navigatepageNums = new int[navigatePages];
int startNum = pageNum - navigatePages / 2;
int endNum = pageNum + navigatePages / 2;
if (startNum < 1) {
startNum = 1;
//(最前navigatePages页
for (int i = 0; i < navigatePages; i++) {
navigatepageNums[i] = startNum++;
}
} else if (endNum > pages) {
endNum = pages;
//最后navigatePages页
for (int i = navigatePages - 1; i >= 0; i--) {
navigatepageNums[i] = endNum--;
}
} else {
//所有中间页
for (int i = 0; i < navigatePages; i++) {
navigatepageNums[i] = startNum++;
}
}
}
}
/**
* 计算前后页，第一页，最后一页
*/
private void calcPage() {
if (navigatepageNums != null && navigatepageNums.length > 0) {
firstPage = navigatepageNums[0];
lastPage = navigatepageNums[navigatepageNums.length - 1];
if (pageNum > 1) {
prePage = pageNum - 1;
}
if (pageNum < pages) {
nextPage = pageNum + 1;
}
}
}
/**
* 判定页面边界
*/
private void judgePageBoudary() {
isFirstPage = pageNum == 1;
isLastPage = pageNum == pages;
hasPreviousPage = pageNum > 1;
hasNextPage = pageNum < pages;
}
public int getPageNum() {
return pageNum;
}
public void setPageNum(int pageNum) {
this.pageNum = pageNum;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public int getSize() {
return size;
}
public void setSize(int size) {
this.size = size;
}
public String getOrderBy() {
return orderBy;
}
public void setOrderBy(String orderBy) {
this.orderBy = orderBy;
}
public int getStartRow() {
return startRow;
}
public void setStartRow(int startRow) {
this.startRow = startRow;
}
public int getEndRow() {
return endRow;
}
public void setEndRow(int endRow) {
this.endRow = endRow;
}
public long getTotal() {
return total;
}
public void setTotal(long total) {
this.total = total;
}
public int getPages() {
return pages;
}
public void setPages(int pages) {
this.pages = pages;
}
public List<T> getList() {
return list;
}
public void setList(List<T> list) {
this.list = list;
}
public int getFirstPage() {
return firstPage;
}
public void setFirstPage(int firstPage) {
this.firstPage = firstPage;
}
public int getPrePage() {
return prePage;
}
public void setPrePage(int prePage) {
this.prePage = prePage;
}
public int getNextPage() {
return nextPage;
}
public void setNextPage(int nextPage) {
this.nextPage = nextPage;
}
public int getLastPage() {
return lastPage;
}
public void setLastPage(int lastPage) {
this.lastPage = lastPage;
}
public boolean isIsFirstPage() {
return isFirstPage;
}
public void setIsFirstPage(boolean isFirstPage) {
this.isFirstPage = isFirstPage;
}
public boolean isIsLastPage() {
return isLastPage;
}
public void setIsLastPage(boolean isLastPage) {
this.isLastPage = isLastPage;
}
public boolean isHasPreviousPage() {
return hasPreviousPage;
}
public void setHasPreviousPage(boolean hasPreviousPage) {
this.hasPreviousPage = hasPreviousPage;
}
public boolean isHasNextPage() {
return hasNextPage;
}
public void setHasNextPage(boolean hasNextPage) {
this.hasNextPage = hasNextPage;
}
public int getNavigatePages() {
return navigatePages;
}
public void setNavigatePages(int navigatePages) {
this.navigatePages = navigatePages;
}
public int[] getNavigatepageNums() {
return navigatepageNums;
}
public void setNavigatepageNums(int[] navigatepageNums) {
this.navigatepageNums = navigatepageNums;
}
@Override
public String toString() {
final StringBuffer sb = new StringBuffer("PageInfo{");
sb.append("pageNum=").append(pageNum);
sb.append(", pageSize=").append(pageSize);
sb.append(", size=").append(size);
sb.append(", startRow=").append(startRow);
sb.append(", endRow=").append(endRow);
sb.append(", total=").append(total);
sb.append(", pages=").append(pages);
sb.append(", list=").append(list);
sb.append(", firstPage=").append(firstPage);
sb.append(", prePage=").append(prePage);
sb.append(", nextPage=").append(nextPage);
sb.append(", lastPage=").append(lastPage);
sb.append(", isFirstPage=").append(isFirstPage);
sb.append(", isLastPage=").append(isLastPage);
sb.append(", hasPreviousPage=").append(hasPreviousPage);
sb.append(", hasNextPage=").append(hasNextPage);
sb.append(", navigatePages=").append(navigatePages);
sb.append(", navigatepageNums=");
if (navigatepageNums == null) sb.append("null");
else {
sb.append('[');
for (int i = 0; i < navigatepageNums.length; ++i)
sb.append(i == 0 ? "" : ", ").append(navigatepageNums[i]);
sb.append(']');
}
sb.append('}');
return sb.toString();
}
}
3 mybatis -xml 文件配置：
<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
">
<jee:jndi-lookup id="dataSource" resource-ref="true" jndi-name="jdbc/fb2b" />
<!-- JNDI方式配置数据源 -->
<!-- <bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean"> <property name="jndiName" value="${jndiName}"></property> </bean> -->
<!-- ========================================配置数据源========================================= -->
<!-- 配置数据源，使用的是alibaba的Druid(德鲁伊)数据源 -->
<!-- <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
<property name="url" value="${jdbc_url}" />
<property name="username" value="${jdbc_username}" />
<property name="password" value="${jdbc_password}" />
初始化连接大小
<property name="initialSize" value="0" />
连接池最大使用连接数量
<property name="maxActive" value="20" />
连接池最大空闲
<property name="maxIdle" value="20" />
连接池最小空闲
<property name="minIdle" value="0" />
获取连接最大等待时间
<property name="maxWait" value="60000" />
<property name="poolPreparedStatements" value="true" />
<property name="maxPoolPreparedStatementPerConnectionSize" value="33" />
<property name="validationQuery" value="${validationQuery}" />
<property name="testOnBorrow" value="false" />
<property name="testOnReturn" value="false" />
<property name="testWhileIdle" value="true" />
配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
<property name="timeBetweenEvictionRunsMillis" value="60000" />
配置一个连接在池中最小生存的时间，单位是毫秒
<property name="minEvictableIdleTimeMillis" value="25200000" />
打开removeAbandoned功能
<property name="removeAbandoned" value="true" />
1800秒，也就是30分钟
<property name="removeAbandonedTimeout" value="1800" />
关闭abanded连接时输出错误日志
<property name="logAbandoned" value="true" />
监控数据库
<property name="filters" value="stat" />
<property name="filters" value="mergeStat" />
</bean> -->
<!-- ========================================分隔线========================================= -->
<!-- ========================================针对myBatis的配置项============================== -->
<!-- 配置sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 实例化sqlSessionFactory时需要使用上述配置好的数据源以及SQL映射文件 -->
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描cn/softmr/account/mapping/目录下的所有SQL映射的xml文件, 省掉Configuration.xml里的手工配置
value="classpath:cn/softmr/account/mapping/*.xml"指的是classpath(类路径)下cn.softmr.account.mapping包中的所有xml文件
UserMapper.xml位于cn.softmr.account.mapping包下，这样UserMapper.xml就可以被自动扫描
-->
<property name="mapperLocations" value="classpath:cn/softmr/*/*/mapping/*.xml" />
<property name="plugins">
<array>
<bean class="com.github.pagehelper.PageHelper">
<property name="properties">
<value>
dialect=mysql
</value>
</property>
</bean>
</array>
</property>
</bean>
<!-- 配置扫描器 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 扫描cn.softmr.account.dao这个包以及它的子包下的所有映射接口类 -->
<property name="basePackage" value="cn.softmr.*.*.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>
<!-- ========================================分隔线========================================= -->
<!-- 配置Spring的事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 注解方式配置事物 -->
<!-- <tx:annotation-driven transaction-manager="transactionManager" /> -->
<!-- 拦截器方式配置事物 -->
<tx:advice id="transactionAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="append*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="modify*" propagation="REQUIRED" />
<tx:method name="edit*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="repair" propagation="REQUIRED" />
<tx:method name="delAndRepair" propagation="REQUIRED" />
<tx:method name="get*" propagation="SUPPORTS" />
<tx:method name="find*" propagation="SUPPORTS" />
<tx:method name="load*" propagation="SUPPORTS" />
<tx:method name="search*" propagation="SUPPORTS" />
<tx:method name="datagrid*" propagation="SUPPORTS" />
<tx:method name="*" propagation="REQUIRED" />
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="transactionPointcut" expression="execution(* cn.softmr.*.*.service..*Impl.*(..))" />
<aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice" />
</aop:config>
<!-- 配置druid监控spring jdbc -->
<bean id="druid-stat-interceptor" class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor">
</bean>
<bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut" scope="prototype">
<property name="patterns">
<list>
<value>cn.softmr.*.service.*</value>
</list>
</property>
</bean>
<aop:config>
<aop:advisor advice-ref="druid-stat-interceptor" pointcut-ref="druid-stat-pointcut" />
</aop:config>
</beans>
4 service
@Override
public PageInfo<ProdPropMeta> searchProdPropMetaPage(
ProdPropMetaExample example, int pageno, int pagesize) {
// TODO Auto-generated method stub
PageHelper.startPage(pageno,pagesize);
List<ProdPropMeta> list = prodPropMetaMapper.selectByExample(example);
return new PageInfo<ProdPropMeta>(list);
}
5 controler
/**
* 查询分页
* @param ProdPropMeta
* @param pageno
* @param pagesize
* @return
*/
@RequestMapping(value = "/searchProdPropMetaPage")
@ResponseBody
public PageInfo<ProdPropMeta> searchProdPropMetaPage(@RequestParam("propName") String propName,
@RequestParam("pageno") int pageno,@RequestParam("pagesize") int pagesize) {
ProdPropMetaExample prodPropMetaExample=new ProdPropMetaExample();
if(!StringUtils.isBlank(propName)){
prodPropMetaExample.createCriteria().andProdPropNameLike(propName+"%");
}
prodPropMetaExample.setOrderByClause(" PROD_PROP_ID DESC ");
PageInfo<ProdPropMeta> list = prodPropMetaService.searchProdPropMetaPage(prodPropMetaExample,pageno,pagesize);
return list;
}
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