Spring、SpringMVC、MyBatis整合

CBeann

发布于 2023-12-25 16:14:51

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发布于 2023-12-25 16:14:51

文章被收录于专栏：CBeann的博客CBeann的博客

项目的目：做一个登陆页面inddex.jsp，然后在数据库中查询用户名和密码，如果匹配成功，跳转到success.jsp,不成功跳转到error.jsp

1创建项目

2加入jar和三个框架的配置文件（注意配置文件的位置）

2.1）applicationContxt.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:context="http://www.springframework.org/schema/context"
	xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">

	<!-- 配置自动扫描的包，使其自动注入到IOC容器 -->
	<context:component-scan base-package="com.imooc.service"></context:component-scan>

	<!-- 导入资源文件 -->
	<context:property-placeholder location="classpath:db.properties" />

	<!-- 配置数据源 -->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="user" value="${jdbc.user}"></property>
		<property name="password" value="${jdbc.password}"></property>
		<property name="driverClass" value="${jdbc.driverClass}"></property>
		<property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
		<property name="initialPoolSize" value="${jdbc.initPoolSize}"></property>
		<property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property>
	</bean>


	<!-- 配置MyBatis的SqlSession -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<!-- 配置MyBatis的配置的文件 -->
		<property name="configLocation" value="classpath:mybatis.xml"></property>
	</bean>

	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
	    <!-- 自动扫描 com.imooc.dao下的interface,并加入IOC容器-->
		<property name="basePackage" value="com.imooc.dao" />
		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
	</bean>

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


	<!-- 可通过注解控制事务 -->
	<tx:annotation-driven transaction-manager="transactionManager" />


</beans>

2.2）applicationContext-mvc.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:context="http://www.springframework.org/schema/context"
	xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">

	<!-- 配置自动扫描的包，使其自动注入到IOC容器 -->
	<context:component-scan base-package="com.imooc.service"></context:component-scan>

	<!-- 导入资源文件 -->
	<context:property-placeholder location="classpath:db.properties" />

	<!-- 配置数据源 -->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="user" value="${jdbc.user}"></property>
		<property name="password" value="${jdbc.password}"></property>
		<property name="driverClass" value="${jdbc.driverClass}"></property>
		<property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
		<property name="initialPoolSize" value="${jdbc.initPoolSize}"></property>
		<property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property>
	</bean>


	<!-- 配置MyBatis的SqlSession -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<!-- 配置MyBatis的配置的文件 -->
		<property name="configLocation" value="classpath:mybatis.xml"></property>
	</bean>

	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
	    <!-- 自动扫描 com.imooc.dao下的interface,并加入IOC容器-->
		<property name="basePackage" value="com.imooc.dao" />
		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
	</bean>

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


	<!-- 可通过注解控制事务 -->
	<tx:annotation-driven transaction-manager="transactionManager" />


</beans>

2.3）mybatis.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>

	<!-- 
	=====>设置别名: 将com.imooc.entity.User设置为User 
	如果不设置别名<select id="selectDemo" resultType="com.imooc.entity.User"> ***</select>
	设置别名            <select id="selectDemo" resultType="User">***</select>
	 -->
	<typeAliases>
		<package name="com.imooc.entity"></package>
	</typeAliases>

        <!--添加mapper.xml-->
	<mappers>
		<mapper resource="com/imooc/mapper/UserMapper.xml" />
	</mappers>


</configuration>

2.4）db.properties

jdbc.user=root
jdbc.password=root
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.jdbcUrl=jdbc:mysql://localhost:3306/text
jdbc.initPoolSize=5
jdbc.maxPoolSize=10
#...

3将下面的配置加入到web.xml

<!-- 设置字符过滤器，防止乱码，必须加在所有的Filter之前 -->
	<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>
		<init-param>
			<param-name>forceEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>characterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>


	<!-- SpringMVC -->
	<servlet>
		<servlet-name>springDispatcherServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:applicationContext-mvc.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>springDispatcherServlet</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

4创建package和class代码

UserMapper.java

package com.imooc.dao;

public interface UserMapper {
	
	//根据username查询password
	String selectPassword(String username);

}

User.java

package com.imooc.entity;

public class User {
	private Integer id;
	private String username;
	private String password;

	public User() {
		super();
	}

	public User(String username, String password) {
		super();
		this.username = username;
		this.password = password;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.lang.Object#toString()
	 */
	@Override
	public String toString() {
		return "User [id=" + id + ", username=" + username + ", password=" + password + "]";
	}

	/**
	 * @return the id
	 */
	public Integer getId() {
		return id;
	}

	/**
	 * @param id
	 *            the id to set
	 */
	public void setId(Integer id) {
		this.id = id;
	}

	/**
	 * @return the username
	 */
	public String getUsername() {
		return username;
	}

	/**
	 * @param username
	 *            the username to set
	 */
	public void setUsername(String username) {
		this.username = username;
	}

	/**
	 * @return the password
	 */
	public String getPassword() {
		return password;
	}

	/**
	 * @param password
	 *            the password to set
	 */
	public void setPassword(String password) {
		this.password = password;
	}
}

LoginHandler.java

package com.imooc.handler;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.imooc.entity.User;
import com.imooc.service.UserService;

@Controller
public class LoginHandler {
	
	@Autowired
	private UserService userService;
	
	@RequestMapping("/login.action")
	public String login(User user){
		String password=userService.login(user.getUsername());
		if(!user.getPassword().equals(password)){
			return "error";
		}else{
			return "success";
		}
	}
	
	
	
	
	

	/**
	 * @return the userService
	 */
	public UserService getUserService() {
		return userService;
	}

	/**
	 * @param userService the userService to set
	 */
	public void setUserService(UserService userService) {
		this.userService = userService;
	}
	
	
	

}

UserMapper.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="com.imooc.dao.UserMapper">




	<select id="selectPassword"  resultType="String">
		select password from user where username = #{username}
	</select>
	



</mapper>

UserService.java

package com.imooc.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.imooc.dao.UserMapper;



@Service
public class UserService {
	
	@Autowired
	private UserMapper userDao;
	
	
	public String login(String username){
		return userDao.selectPassword(username);
	}
	
	
	
	
	

	public UserService() {
		super();
	}

	/**
	 * @return the userDao
	 */
	public UserMapper getUserDao() {
		return userDao;
	}

	/**
	 * @param userDao the userDao to set
	 */
	public void setUserDao(UserMapper userDao) {
		this.userDao = userDao;
	}
	
	
	

}

5创建JSP

index.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>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>

<form action="login.action" method="post">
username<input type="text"  name="username"><br/>
password<input type="password"  name="password"><br/>
<input type="submit" value="Submit">
</form>
</body>
</html>

success.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!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=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
success.jsp
</body>
</html>

error.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!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=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
error.jsp
</body>
</html>