SSM——SSM整合+log4j 完成简单的增删改查
2018-02-05 12:51
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demo介绍:
通过 Spring+SpringMvc+Mybatis 完成用户的增删改查操作。
1.项目结构(上图):
用到的jar包(上图):
2.建好项目结构之后,就可以向里面添加内容了
1). 首先我们创建一个User javabean ,放在po的包下 取名为User.java
2).在mapper包下创建UserMapper.java 接口,也就是 Dao接口
3).紧接着我们在mapper的包下来创建mapper的实现类 UserMapper.xml 相当于daoImpl 不过在mybatis中是用mapper.xml这种配置文件的形式来实现的。
4).编写Mybatis的配置文件SqlMapConfig.xml
3.Mybatis与Spring 的整合(重点)其实就是一个配置文件,我们将他取名为spring-dao.xml
其中db.properties的内容如下:
4.至此为止已经完成了Spring对于Mybatis的整合,接下来我们需要进行Service和其实现类 serviceImpl 的编写工作。
1). 在service的包下创建用户的service接口IUserService.java
2).在serviceImpl的包下创建service的实现类UserServiceImpl.java
5.接下来就是SpringMvc的部分了,我们先来进行controller的编写
1). 在controller的包下创建UserController.java
2). 进行Springmvc和Spring 的整合在spring-mvc.xml中配置。
接下来是web.xml的配置,包括配置文件的路径,Spring的监听,SpringMvc的前端控制器的监听 ……..
6.后台的东西到此为止就已经全部完成了,接下来我们来看一下页面jsp
1).index.jsp
2).查询所有用户的页面 alluser.jsp
3). 添加用户页面 addUser.jsp
4). 编辑用户页面 editUser.jsp
到此为止 ssm整合增删改查的小项目就已经做好了,不过里面存在一些小问题,就是对于日期格式的显示,SpringMvc提供的转换器中没有对于日期的自动转换,所以我们需要自己编写一个日期转换器
自定义转换器的编写,在 converter的包下建一个日期转换的类 DateConverter.java 并让其实现DateConverter的接口,然后需要在spring-mvc.xml中配置一下此转换器
需要在spring-mvc.xml配置文件中添加这样一段代码:
最后我们再加上log4j的配置文件 log4j.properties
一个完美的增删改查+log4j的ssm框架就完成了 ,快去运行一下试试吧。如有错误,请留言指正
通过 Spring+SpringMvc+Mybatis 完成用户的增删改查操作。
1.项目结构(上图):
用到的jar包(上图):
2.建好项目结构之后,就可以向里面添加内容了
1). 首先我们创建一个User javabean ,放在po的包下 取名为User.java
package com.dh.ssm.po; import java.io.Serializable; import java.util.Date; @SuppressWarnings("serial") public class User implements Serializable{ private Integer id; private String userName; private Date birthday; private String sex; private String address; public User(){} public User(Integer id, String userName, Date birthday, String sex, String address) { super(); this.id = id; this.userName = userName; this.birthday = birthday; this.sex = sex; this.address = address; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } public Date getBirthday() { return birthday; } public void setBirthday(Date birthday) { this.birthday = birthday; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } @Override public String toString() { return "User [id=" + id + ", userName=" + userName + ", birthday=" + birthday + ", sex=" + sex + ", address=" + address + "]"; } }
2).在mapper包下创建UserMapper.java 接口,也就是 Dao接口
package com.dh.ssm.mapper; import java.util.List; import com.dh.ssm.po.User; public interface UserMapper { public void saveUser(User user)throws Exception; public void deleteUserById(Integer id)throws Exception; public void updateUser(User user)throws Exception; public User findUserById(Integer id)throws Exception; public List<User> findAll()throws Exception; }
3).紧接着我们在mapper的包下来创建mapper的实现类 UserMapper.xml 相当于daoImpl 不过在mybatis中是用mapper.xml这种配置文件的形式来实现的。
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.dh.ssm.mapper.UserMapper"> <!--这里的id的内容必须和mapper接口中的方法名称相同, parameterType 指的是传入的参数的类型 resultType 指的是返回值的类型 --> <insert id="saveUser" parameterType="com.dh.ssm.po.User" > insert into user (userName,birthday,sex,address) values(#{userName},#{birthday},#{sex},#{address}) </insert> <delete id="deleteUserById" parameterType="Integer"> delete from user where id = #{id} </delete> <update id="updateUser" parameterType="com.dh.ssm.po.User" > update user set userName=#{userName},birthday=#{birthday},sex=#{sex},address=#{address} where id=#{id} </update> <select id="findUserById" parameterType="Integer" resultType="com.dh.ssm.po.User"> select * from user where id = #{id} </select> <select id="findAll" resultType="com.dh.ssm.po.User"> select * from user </select> </mapper>
4).编写Mybatis的配置文件SqlMapConfig.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <!-- 这里指的是mapper文件的扫描 --> <mappers> <package name="com.dh.ssm.mapper"/> </mappers> </configuration>
3.Mybatis与Spring 的整合(重点)其实就是一个配置文件,我们将他取名为spring-dao.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd "> <!--引入数据库的参数配置文件 db.properties--> <context:property-placeholder location="classpath:db.properties"/> <!--创建数据库连接池 dbcp--> <bean id="dataSource" class="org.apache.commons.dbcp2.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="initialSize" value="1" /> <!-- 连接池的最大值 --> <property name="maxTotal" value="30" /> <!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 --> <property name="maxIdle" value="5" /> <!-- 最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 --> <property name="minIdle" value="1" /> </bean> <!--设置sqlsessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!--加载mybatis的配置文件 --> <property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml"></property> <property name="dataSource" ref="dataSource"></property> </bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.dh.ssm.mapper"/> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> </bean> <!--事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 数据源 在dao中配置了,在这里引用 --> <property name="dataSource" ref="dataSource"/> </bean> <!-- 使用声明式事务 transaction-manager:引用上面定义的事务管理器 --> <tx:annotation-driven transaction-manager="transactionManager" /> </beans>
其中db.properties的内容如下:
#这里的mybatis是指的数据库的名字,需要换成你自己的 jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/mybatis?characterEncoding=utf-8 jdbc.username=root jdbc.password=root
4.至此为止已经完成了Spring对于Mybatis的整合,接下来我们需要进行Service和其实现类 serviceImpl 的编写工作。
1). 在service的包下创建用户的service接口IUserService.java
package com.dh.ssm.service; import java.util.List; import org.springframework.stereotype.Service; import com.dh.ssm.po.User; @Service public interface IUserService { public void saveUser(User user)throws Exception; public void deleteUserById(Integer id)throws Exception; public void updateUser(User user)throws Exception; public User findUserById(Integer id)throws Exception; public List<User> findAll()throws Exception; }
2).在serviceImpl的包下创建service的实现类UserServiceImpl.java
package com.dh.ssm.serviceImpl; import java.util.List; import javax.annotation.Resource; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import com.dh.ssm.mapper.UserMapper; import com.dh.ssm.po.User; import com.dh.ssm.service.IUserService; @Service @Transactional public class UserServiceImpl implements IUserService { @Resource private UserMapper userMapper; @Override public void saveUser(User user) throws Exception { userMapper.saveUser(user); } @Override public void deleteUserById(Integer id) throws Exception { userMapper.deleteUserById(id); } @Override public void updateUser(User user) throws Exception { userMapper.updateUser(user); } @Override public User findUserById(Integer id) throws Exception { User user=userMapper.findUserById(id); return user; } @Override public List<User> findAll() throws Exception { List<User> list = userMapper.findAll(); return list; } }
5.接下来就是SpringMvc的部分了,我们先来进行controller的编写
1). 在controller的包下创建UserController.java
package com.dh.ssm.controller; import java.util.List; import javax.servlet.http.HttpServletRequest; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springfram 14eb5 ework.web.bind.annotation.RequestMapping; import com.dh.ssm.po.User; import com.dh.ssm.service.IUserService; @Controller @RequestMapping("/user") public class UserController { @Autowired private IUserService userService; /** * 查询所有用户 * @param request * @param model * @return allUser.jsp * @throws Exception */ @RequestMapping("/getAllUser") public String getAllUser(Model model)throws Exception{ List<User> userList = userService.findAll(); model.addAttribute("userList", userList); //request.setAttribute("userList", userList); return "/allUser"; } /** * 添加用户中间的跳转页面 * @return * @throws Exception */ @RequestMapping("/toAddUser") public String toAddUser()throws Exception{ System.out.println("add0.."); return "addUser"; } /** * 添加用户 * @return 添加完成之后重定向到查找所有用户 * @throws Exception */ @RequestMapping("/addUser") public String addUser(User user)throws Exception{ userService.saveUser(user); return "redirect:/user/getAllUser.action"; } /** * 删除用户 * @return 删除完成之后重定向到查找所有用户 * @throws Exception */ @RequestMapping("/delUer") public String delUer(int id,Model model)throws Exception{ userService.deleteUserById(id); return "redirect:/user/getAllUser.action"; } /** * 编辑页面的展示 先编辑,再提交 * @param id * @param model * @param request * @return * @throws Exception */ @RequestMapping("/editUser") public String editUser(int id,Model model)throws Exception{ User user = userService.findUserById(id); model.addAttribute("user", user); return "editUser"; } @RequestMapping("/updateUser") public String updateUser(User user,Model model)throws Exception{ userService.updateUser(user); //user=userService.findUserById(user.getId()); model.addAttribute("user", user); return "redirect:/user/getAllUser.action"; } }
2). 进行Springmvc和Spring 的整合在spring-mvc.xml中配置。
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd "> <context:component-scan base-package="com.dh.ssm.controller"/> <context:component-scan base-package="com.dh.ssm.service"/> <context:component-scan base-package="com.dh.ssm.serviceImpl"/> <mvc:annotation-driven conversion-service="conversionServiceFactoryBean"/> <-- 配置静态资源,直接映射到对应的文件夹,不被DispatcherServlet处理, 04新增功能,需要重新设置spring-mvc-xsd --> <mvc:resources mapping="/img/**" location="/img/" /> <mvc:resources mapping="/js/**" location="/js/" /> <mvc:resources mapping="/css/**" location="/css/" /> <mvc:resources mapping="/html/**" location="/html/" /> <!--视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>
接下来是web.xml的配置,包括配置文件的路径,Spring的监听,SpringMvc的前端控制器的监听 ……..
<?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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>SSMProject</display-name> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/spring-*.xml</param-value> </context-param> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>*.action</url-pattern> </servlet-mapping> <filter> <filter-name>encodingFilter</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> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
6.后台的东西到此为止就已经全部完成了,接下来我们来看一下页面jsp
1).index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <% String basePath = "http://" + request.getServerName() + ":" +request.getServerPort() + request.getContextPath() + "/"; %> <head> <base href = "<%=basePath%>"> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>首页</title> </head> <body> <h3><a href="<%=basePath%>user/getAllUser.action">进入用户管理页</a></h3> </body> </html>
2).查询所有用户的页面 alluser.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <% String basePath = "http://" + request.getServerName() + ":" +request.getServerPort() + request.getContextPath() + "/"; %> <head> <base href = "<%=basePath%>"> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>用户查询列表</title> </head> <body> <form action="<%=basePath%>user/toAddUser.action" method="post"> <input type="submit" value="添加"/> </form> <table border="1px" width="600px"> <tr> <th>姓名</th> <th>性别</th> <th>生日</th> <th>地址</th> <th>操作</th> </tr> <c:if test="${!empty userList}"> <c:forEach items="${userList}" var="user"> <tr> <td>${user.userName}</td> <td>${user.sex}</td> <td><fmt:formatDate value="${user.birthday}" pattern="yyyy-MM-dd"/></td> <td>${user.address}</td> <td> <a href="<%=basePath%>user/editUser.action?id=${user.id}">修改</a> <a href="<%=basePath%>user/delUer.action?id=${user.id}">删除</a> </td> </tr> </c:forEach> </c:if> </table> </body> </html>
3). 添加用户页面 addUser.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <% String basePath = "http://" + request.getServerName() + ":" +request.getServerPort() + request.getContextPath() + "/"; %> <head> <base href = "<%=basePath%>"> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>用户添加页面</title> </head> <body> <form action="<%=basePath%>user/addUser.action" method="post"> <table> <tr> <td>姓名</td> <td> <input type="text" name="userName"> </td> </tr> <tr> <td>生日</td> <td> <input type="text" name="birthday"> </td> </tr> <tr> <td>性别</td> <td> <input type="text" name="sex"> </td> </tr> <tr> <td>地址</td> <td> <input type="text" name="address"> </td> </tr> <tr> <td> <input type="submit" value="保存"> </td> </tr> </table> </form> </body> </html>
4). 编辑用户页面 editUser.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <% String basePath = "http://" + request.getServerName() + ":" +request.getServerPort() + request.getContextPath() + "/"; %> <head> <base href = "<%=basePath%>"> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>用户编辑页面</title> </head> <body> <form action="<%=basePath%>user/updateUser.action" method="post"> <input type="hidden" name="id" value="${user.id }"/> <table border="1px" width="400px"> <tr> <td>id</td> <td width="300px"> <input type="text" name="id" value="${user.id}" style="width:300px" readonly="readonly"> </td> </tr> <tr> <td>姓名</td> <td width="300px"> <input type="text" name="userName" value="${user.userName}" style="width:300px"> </td> </tr> <tr> <td>性别</td> <td> <input type="text" name="sex" value="${user.sex}" style="width:300px"> </td> </tr> <tr> <td>生日</td> <td> <input type="text" name="birthday" value="<fmt:formatDate value="${user.birthday}" pattern="yyyy-MM-dd"/>" style="width:300px"> </td> </tr> <tr> <td>地址</td> <td> <input type="text" name="address" value="${user.address}" style="width:300px"> </td> </tr> <tr> <td> <button type="submit" >提交</button> </td> </tr> </table> </form> </body> </html>
到此为止 ssm整合增删改查的小项目就已经做好了,不过里面存在一些小问题,就是对于日期格式的显示,SpringMvc提供的转换器中没有对于日期的自动转换,所以我们需要自己编写一个日期转换器
自定义转换器的编写,在 converter的包下建一个日期转换的类 DateConverter.java 并让其实现DateConverter的接口,然后需要在spring-mvc.xml中配置一下此转换器
package com.dh.ssm.converter; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; import org.springframework.core.convert.converter.Converter; public class DateConverter implements Converter<String, Date> { @Override public Date convert(String source) { try { if(null != source){//2016-11-05 11_43-50 DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); return df.parse(source); } } catch (Exception e) { } return null; } }
需要在spring-mvc.xml配置文件中添加这样一段代码:
<!-- 配置Conveter转换器 转换工厂 --> <bean id="conversionServiceFactoryBean" class="org.springframework.format.support.FormattingConversionServiceFactoryBean"> <!-- 配置 多个转换器--> <property name="converters"> <list> <bean class="com.dh.ssm.converter.DateConverter"/> </list> </property> </bean>
最后我们再加上log4j的配置文件 log4j.properties
### set log levels ### log4j.rootLogger = info , stdout log4j.addivity.org.apache=true log4j.logger.org.mybatis.example.BlogMapper=TRACE #Console log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.Threshold=info log4j.appender.stdout.Target=System.out #log4j.appender.CONSOLE.Encoding=GBK log4j.appender.stdout.layout=org.apache.log4j.PatternLayout #log4j.appender.stdout.layout.ConversionPattern= %d - %c -%-4r [%t] %-5p %c %x - %m%n log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n
一个完美的增删改查+log4j的ssm框架就完成了 ,快去运行一下试试吧。如有错误,请留言指正
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