springMVC框架--SSM整合开发（二）

1      SSM整合开发工程搭建

1.1    整合思路

在mybatis和spring整合的基础上 添加springMVC。

spring要管理springMVC编写的Handler（controller）、mybatis的SqlSessionFactory、mapper（dao）接口

第一步：整合dao，spring和mybatis整合

第二步： 整合service，spring管理service接口，service中可以调用spring容器中dao(mapper)

第三步：整合controller，spring管理controller接口，在controller调用service

1.2    所需jar包

mybatis：3.2.7

spring：3.2.0

mybatis的jar

mybatis和spring整合包

spring的所有jar包(包括 springmvc的包)

数据库驱动包

log4j日志

1.3    工程结构

1.3.1    相关配置文件

applicationContext-dao.xml---配置数据源、SqlSessionFactory、mapper扫描器、加载mybatis配置文件

applicationContext-service.xml---配置service接口管理

applicationContext-transaction.xml--事务管理

sprintmvc.xml---springmvc的配置文件，配置处理器映射器、适配器、视图解析器

SqlMapConfig.xml---mybatis的配置文件，配置别名、settings（延迟加载，二级缓存相关配置）、mapper扫描器（和spring整合后mapper扫描器由spring管理）

Web.xml---配置前端控制器，加载spring相关配置文件

db.properties---数据库配置文件

log4j.properties---日志文件

1.3.2    applicationContext-dao.xml

配置mybatis的数据源、sqlSessionFactory、mapper扫描器、加载sqlMapConfig.xml

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
<!-- 加载数据库配置文件 -->
<context:property-placeholder location="classpath:db.properties"/>
<!-- 数据库连接池 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="maxActive" value="10"/>
<property name="maxIdle" value="5"/>
</bean>

<!-- SqlsessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 数据源 -->
<property name="dataSource" ref="dataSource"/>
<!-- mybatis配置文件 -->
<property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml"/>
</bean>

<!--
MapperScannerConfigurer：mapper的扫描器，将包下边的mapper接口自动创建代理对象，
自动创建到spring容器中，bean的id是mapper的类名（首字母小写）
-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 配置扫描包的路径
如果要扫描多个包，中间使用半角逗号分隔
要求mapper.xml和mapper.java同名且在同一个目录
-->
<property name="basePackage" value="cn.itcast.ssm.mapper"/>

<!-- 使用sqlSessionFactoryBeanName -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>

</beans>

1.3.3    applicationContext-service.xml

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> <!-- 商品管理的service -->
<bean id="itemsService"class="cn.itcast.ssm.service.impl.ItemsServiceImpl"/>

</beans>

1.3.4    applicationContext-transation.xml

在此配置文件配置事务，声明式事务控制。

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
<!-- 使用声明式事务配置，可以有效规范代码 -->

<!-- 事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource"ref="dataSource"/>
</bean>

<!-- 通知 -->
<tx:advice id="txAdvice"transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="save*"propagation="REQUIRED"/>
<tx:method name="insert*"propagation="REQUIRED"/>
<tx:method name="update*"propagation="REQUIRED"/>
<tx:method name="delete*"propagation="REQUIRED"/>
<tx:method name="find*"propagation="SUPPORTS" read-only="true"/>
<tx:method name="select*"propagation="SUPPORTS" read-only="true"/>
<tx:method name="get*"propagation="SUPPORTS" read-only="true"/>
</tx:attributes>
</tx:advice>

<!-- aop -->
<aop:config>
<aop:advisor advice-ref="txAdvice"
pointcut="execution(*cn.itcast.ssm.service.impl.*.*(..))"/>
</aop:config>

</beans>

1.3.5    前端控制器配置（web.xml）

<?xml version="1.0"encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee"xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"xsi:schemaLocation="http://java.sun.com/xml/ns/javaeehttp://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID"version="2.5">

<!--配置spring容器监听器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/classes/spring/applicationContext-*.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<display-name>springMVCfirst</display-name>
<!--前端控制器-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 加载springmvc配置 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<!-- 配置文件的地址
如果不配置contextConfigLocation，
默认查找的配置文件名称classpath下的：servlet名称+"-serlvet.xml"即：springmvc-serlvet.xml
-->
<param-value>classpath:spring/springmvc.xml</param-value>
</init-param>

</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<!--
可以配置/ ，此工程所有请求全部由springmvc解析，此种方式可以实现RESTful方式，需要特殊处理对静态文件的解析不能由springmvc解析
可以配置*.do或*.action，所有请求的url扩展名为.do或.action由springmvc解析，此种方法常用
不可以/*，如果配置/*，返回jsp也由springmvc解析，这是不对的。

-->
<url-pattern>*.action</url-pattern>
</servlet-mapping>

<!--post乱码处理 -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list></web-app>

1.3.1    配置springmvc.xml

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> <!-- 使用spring组件扫描 -->
<context:component-scan base-package="cn.itcast.ssm.controller"/>

<!-- 通过annotation-driven可以替代下边的处理器映射器和适配器 -->
<!-- <mvc:annotation-drivenconversion-service="conversionService">
</mvc:annotation-driven>-->

<!-- 注解处理器映射器 -->
<bean
class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean>

<!-- 注解适配器 -->
<bean
class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>

<!-- 配置视图解析器要求将jstl的包加到classpath -->
<!-- ViewResolver -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>

1.4    商品列表开发

1.4.1    需求

查询商品列表

1.4.2    pojo

功能描述：根据条件查询商品信息，返回商品列表

商品类Item.java

public class Items {
private Integer id;
private String name;
private Float price;
private String pic;
private Date createtime;
private String detail;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name){
this.name = name == null ? null : name.trim();
}
public Float getPrice() {
return price;
}
public void setPrice(Floatprice) {
this.price = price;
}
public String getPic() {
return pic;
}
public void setPic(String pic) {
this.pic = pic == null ? null : pic.trim();
}
public Date getCreatetime() {
return createtime;
}
public void setCreatetime(Datecreatetime) {
this.createtime = createtime;
}
public String getDetail() {
return detail;
}
public void setDetail(Stringdetail) {
this.detail = detail == null ? null : detail.trim();
}
}
商品信息的扩展类ItemCustom.java

public class ItemsCustom extends Items{
//可以扩展其他属性
}
商品信息的包装类：ItemsQueryVo.java
public class ItemsQueryVo {
//商品信息
private ItemsCustom itemsCustom;
public ItemsCustom getItemsCustom() {
return itemsCustom;
}
public voidsetItemsCustom(ItemsCustom itemsCustom) {
this.itemsCustom= itemsCustom;
}
}

1.4.3    mapper

商品信息接口ItemesMapperCustom.java

/**
* 查询商品列表
* @author xia
*
*/
public interface ItemsMapperCustom {
// 商品查询列表
public List<ItemsCustom>findItemsList(ItemsQueryVo itemsQueryVo)
throwsException;
}

1.4.4    mapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTDMapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.itcast.ssm.mapper.ItemsMapperCustom">

<!-- 商品查询的sql片段
建议是以单表为单位定义查询条件
建议将常用的查询条件都写出来
-->
<sql id="query_items_where">
<if test="itemsCustom!=null">
<if test="itemsCustom.name!=nulland itemsCustom.name!=''">
and name like '%${itemsCustom.name}%'
</if>
<if test="itemsCustom.id!=null">
and id = #{itemsCustom.id}
</if>

</if>

</sql>

<!-- 商品查询
parameterType：输入查询条件
-->
<select id="findItemsList" parameterType="itemsQueryVo"
resultType="cn.itcast.ssm.po.ItemsCustom">
SELECT * FROM items
<where>
<include refid="query_items_where"/>
</where>
</select>
</mapper>

1.4.5    service

public class ItemsServiceImpl implements ItemsService {
//注入mapper
@Autowired
private ItemsMapperCustom itemsMapperCustom;
//商品查询列表
public List<ItemsCustom>findItemsList(ItemsQueryVo itemsQueryVo)
throws Exception {
return itemsMapperCustom.findItemsList(itemsQueryVo);
}
}

1.4.6    在applicationContext-service.xml中配置service

<!-- 商品管理 的service -->
<bean id="itemsService" class="cn.itcast.ssm.service.impl.ItemsServiceImpl"/>

1.4.7    controller

@Controller
//定义url的根路径，访问时根路径+方法的url
@RequestMapping("/items")
public class ItemsController {

//注入service
@Autowired
private ItemsService itemsService;

@RequestMapping("/queryItems")
public ModelAndView queryItems(HttpServletRequestrequest) throws Exception {

System.out.println(request.getParameter("id"));
//调用service查询商品列表
List<ItemsCustom> itemsList = itemsService.findItemsList(null);
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("itemsList", itemsList);
// 指定逻辑视图名
modelAndView.setViewName("itemsList");
return modelAndView;
}
}

1.4.8    jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type"content="text/html;charset=UTF-8">
<title>查询商品列表</title>
</head>
<body>
<form
action="${pageContext.request.contextPath }/items/queryItem.action"
method="post">
查询条件：
<table width="100%"border=1>
<tr>
<td><input type="submit" value="查询" />
</td>
</tr>
</table>
商品列表：
<table width="100%"border=1>
<tr>
<td>商品名称</td>
<td>商品价格</td>
<td>生产日期</td>
<td>商品描述</td>
<td>操作</td>
</tr>
<c:forEach items="${itemsList }" var="item">
<tr>
<td>${item.name}</td>
<td>${item.price}</td>
<td><fmt:formatDate value="${item.createtime}"
pattern="yyyy-MM-ddHH:mm:ss" />
</td>
<td>${item.detail}</td>
<td><a
href="${pageContext.request.contextPath }/items/editItems.action?id=${item.id}">修改</a>
</td>
</tr>
</c:forEach>

</table>
</form>
</body>

</html>