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和 XML 版本类似,但是创建对象的方式是Spring自动扫描,然后命名空间是 Application.XML 中的多行 CONTEXT 代码,然后通过注解创建和注入每个对象:
直接代码:
1.userDao
package cn.mr.li.dao;import java.util.List;import cn.mr.li.entity.User;public interface UserDao { List<User> getUser(); }
2.userDaoImpl
package cn.mr.li.dao.impl;import java.util.List;import org.apache.ibatis.session.SqlSessionFactory;import org.mybatis.spring.support.SqlSessionDaoSupport;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Repository;import cn.mr.li.dao.UserDao;import cn.mr.li.entity.User;/** * Because the direct call is the type of service interface, it does not directly inject the IMPL implementation class, so don't write @Repository ("Uservice") @ service ("UserService") * @author Administrator * */@Repository() public class UserDaoImpl extends SqlSessionDaoSupport implements UserDao { @Autowired @Override public void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory) { super.setSqlSessionFactory(sqlSessionFactory); } @Override public List<User> getUser() { return this.getSqlSession().selectList("cn.mr.li.entity.user.mapper.getAll"); } }
3.用户服务
package cn.mr.li.service;import java.util.List;import cn.mr.li.entity.User;public interface UserService { List<User> getAll(); }
4.userServiceImpl
package cn.mr.li.service.impl;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import cn.mr.li.dao.UserDao;import cn.mr.li.entity.User;import cn.mr.li.service.UserService;@Service()public class UserServiceImpl implements UserService { @Autowired private UserDao userDao; @Override public List<User> getAll() { return userDao.getUser(); } public UserDao getUserDao() { return userDao; } public void setUserDao(UserDao userDao) { this.userDao = userDao; } }
5.用户对象
package cn.mr.li.entity;public class User { private int id; private String name; private int age; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public User(int id, String name, int age) { super(); this.id = id; this.name = name; this.age = age; } public User() { } }
6.user.mapper.xml
<?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="cn.mr.li.entity.user.mapper"> <select id="getAll" resultType="User"> select * from user </select></mapper>
7.userAction
package cn.mr.li.action;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.annotation.Scope;import org.springframework.stereotype.Controller;import cn.mr.li.entity.User;import cn.mr.li.service.UserService;/** * @ Scope annotation means that it is not a single case for configuring the ACTION that is accessed, otherwise this time I am accessing next time, the last data will still exist. * @author Administrator * */@Controller()@Scope("prototype")public class UserAction { private List<User> list; @Autowired private UserService userService; /** * Here you must return to Success, because the time is judged back, if not success, the data is not solid, the page will be 404 * @return */ public String list(){ list = userService.getAll(); return "success"; } public List<User> getList() { return list; } }
8.applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- Configuring data sources --> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/test"/> <property name="username" value="root"/> <property name="password" value="123456"/> </bean> <!-- Declarative transaction configuration --> <!-- Configure transaction manager --> <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean> <!-- Configuration transaction notification --> <tx:advice id="txAdvice" transaction-manager="txManager"> <tx:attributes> <!-- What ways are configured, what kind of transaction is used to configure transaction propagation features --> <tx:method name="add" propagation="REQUIRED"/> <tx:method name="insert" propagation="REQUIRED"/> <tx:method name="update" propagation="REQUIRED"/> <tx:method name="delete" propagation="REQUIRED"/> <tx:method name="remove*" propagation="REQUIRED"/> <tx:method name="get" read-only="true"/> <tx:method name="*" propagation="REQUIRED"/> </tx:attributes> </tx:advice> <aop:config> <aop:pointcut expression="execution(* cn.mr.li.service.impl.*.*(..))" id="pointcut"/> <aop:advisor advice-ref="txAdvice" pointcut-ref="pointcut"/> </aop:config> <!-- Declarative transaction configuration end --> <!-- Configure SQLSessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="configLocation" value="classpath:mybatis.cfg.xml"></property> </bean> <!-- Spring starts automatically scan all kinds of files under this package --> <context:component-scan base-package="cn.mr.li"/></beans>
9.mybatis.cfg.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> <typeAliases> <package name="cn.mr.li.entity"/> </typeAliases> <mappers> <mapper resource="cn/mr/li/entity/user.mapper.xml"/> </mappers> </configuration>s
10.struts.xml
<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"><struts> <package name="user" namespace="/" extends="struts-default"> <!-- The name = "list" configured here means that it can be accessed by List when access is accessed, what is in web.xml In the Struts configuration, this project is configured * .act, so if you want to access the list.jsp page under this item. Just directly in the parent path (default is the project name), follow /List.Action --> <action name="list" class="userAction" method="list"> <result>/list.jsp</result> </action> </package></struts>
11.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/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <!-- Configure Spring: Cooperate with global variables, will read the Spring to read ContextConfigLocation, not need to read in the program. --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <!-- Configure the listener: This listener initializes the global context in its constructor when starting initialization. Therefore, you need to load the Spring configuration, because there is an object instance in Spring. --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- Configuring struts2: You need to configure filter, and its URL, access style --> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <!-- The suffix name when visiting is set here. --> <url-pattern>*.action</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>
12.list.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <table width="80%" align="center"> <tr> <td>Numbering</td> <td>Name</td> <td>password</td> </tr> <c:forEach items="${list }" var="bean"> <tr> <td>${bean.id }</td> <td>${bean.name }</td> <td>${bean.age }</td> </tr> </c:forEach> </table> </body></html>
我的访问路径:http://localhost:8080/Spring001/List.Action
项目目录结构:
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