Java学问总结-整合SpringMVC+Mybatis+Spring（二）

Java知识总结---整合SpringMVC+Mybatis+Spring（二）

在现在的Java Web开发过程中，各种各样框架层出不穷，在工作中，框架的使用也越来越频繁。今天介绍一下现在比较流行的SpringMVC、Mybatis和Spring框架，学习一下如何在项目中使用它们。本次项目的创建使用maven来完成。

1、使用maven创建web项目。选择Maven Project，catalogs选择webapps，输入groupId,artifactId,完成即可。

2、在pom.xml中引入相关的依赖：

 <properties>  	<spring.version>3.2.12.RELEASE</spring.version>  </properties>  <dependencies>  	<dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>4.10</version>      <scope>test</scope>    </dependency>     <dependency>		<groupId>javax.servlet</groupId>		<artifactId>servlet-api</artifactId>		<version>2.4</version>	</dependency>	         <!-- spring依赖 -->	<dependency>		<groupId>org.springframework</groupId>		<artifactId>spring-core</artifactId>		<version>${spring.version}</version>	</dependency>	<dependency>		<groupId>org.springframework</groupId>		<artifactId>spring-beans</artifactId>		<version>${spring.version}</version>	</dependency>	<dependency>		 <groupId>org.springframework</groupId>  		 <artifactId>spring-tx</artifactId>  		 <version>${spring.version}</version>	</dependency>		<dependency>		<groupId>org.springframework</groupId>		<artifactId>spring-aop</artifactId>		<version>${spring.version}</version>	</dependency>	<dependency>		<groupId>org.springframework</groupId>		<artifactId>spring-aspects</artifactId>		<version>${spring.version}</version>	</dependency>	<dependency>		<groupId>org.springframework</groupId>  		<artifactId>spring-context</artifactId>		<version>${spring.version}</version>	</dependency>	<dependency>		<groupId>org.springframework</groupId>  		<artifactId>spring-context-support</artifactId>  		<version>${spring.version}</version>	</dependency>	<dependency>		<groupId>org.springframework</groupId>		<artifactId>spring-jdbc</artifactId>		<version>${spring.version}</version>	</dependency>	<dependency>		<groupId>org.springframework</groupId>		<artifactId>spring-webmvc</artifactId>		<version>${spring.version}</version>	</dependency>	<dependency>		<groupId>org.springframework</groupId>		<artifactId>spring-test</artifactId>		<version>${spring.version}</version>	</dependency>	        <!-- mybatis依赖 -->	<dependency>        <groupId>org.mybatis</groupId>        <artifactId>mybatis</artifactId>        <version>3.2.7</version>    </dependency>    <dependency>        <groupId>org.mybatis</groupId>        <artifactId>mybatis-spring</artifactId>        <version>1.2.2</version>    </dependency>        <!-- mysql驱动 -->    <dependency>		<groupId>mysql</groupId>		<artifactId>mysql-connector-java</artifactId>		<version>5.1.5</version>	</dependency>	        <!-- jsp相关依赖 -->	<dependency>		<groupId>jstl</groupId>		<artifactId>jstl</artifactId>		<version>1.2</version>	</dependency>	<dependency>		<groupId>taglibs</groupId>		<artifactId>standard</artifactId>		<version>1.1.2</version>	</dependency>	<dependency>		<groupId>javax.servlet</groupId>		<artifactId>jsp-api</artifactId>		<version>2.0</version>		<scope>test</scope>	</dependency>	<dependency>		<groupId>javax.servlet</groupId>		<artifactId>servlet-api</artifactId>		<version>2.5</version>		<scope>test</scope>	</dependency>  </dependencies>

2、创建spring配置文件

      在src下创建applicationContext.xml，内容暂时为空。

3、在web.xml中引入spring

      在web.xml中添加如下内容：

<context-param>		<param-name>contextConfigLocation</param-name>		<param-value>classpath:applicationContext.xml</param-value>	</context-param>	<listener>		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>	</listener>

4、增加spring-mvc配置

      在WEB-INF下增加spring-servlet.xml文件，内容如下；

<?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:p="http://www.springframework.org/schema/p"	xmlns:context="http://www.springframework.org/schema/context"	xsi:schemaLocation="			http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd			http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd			http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd			http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">	<context:component-scan base-package="com.demo.controller" />	<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />  	<bean id="viewResolver"		class="org.springframework.web.servlet.view.InternalResourceViewResolver">		<property name="viewClass"			value="org.springframework.web.servlet.view.JstlView" />		<property name="prefix" value="/WEB-INF/page/" />		<property name="suffix" value=".jsp" />	</bean> 	</beans>

在web.xml中引入如下内容：

<servlet>        <servlet-name>spring</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>spring</servlet-name>        <url-pattern>*.do</url-pattern>    </servlet-mapping>

在此处要特别注意：servlet-name如果是spring，则springmvc的配置文件就必须是spring-servlet.xml

5、mybatis配置

在src下创建mybatis的配置文件mybatis-config.xml，内容如下：

<?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> 	<settings>		<setting name="cacheEnabled" value="true" />		<setting name="lazyLoadingEnabled" value="false" />		<setting name="defaultStatementTimeout" value="30" />	</settings>	    <mappers>         <mapper resource="mybatis/UserMapper.xml" />     </mappers> </configuration>

在applicationContext.xml文件中配置mybatis：

<?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"       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">            	<context:property-placeholder location="classpath:jdbc.properties"/> 	<context:component-scan base-package="com.demo" />	<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 	    <property name="driverClassName" value="${jdbc.driverClassName}" /> 	    <property name="url" value="${jdbc.url}" /> 	    <property name="username" value="${jdbc.username}"></property>      	<property name="password" value="${jdbc.password}"></property>	</bean> 	 	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 	    <property name="dataSource" ref="dataSource" /> 	</bean> 	 	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> 	    <property name="configLocation" value="classpath:mybatis-config.xml" /> 	    <property name="dataSource" ref="dataSource" /> 	</bean>

其中jdbc.properties文件也在src下：

jdbc.driverClassName=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql://localhost/testjdbc.username=rootjdbc.password=root

6、创建model、dao、service

UserModel：

package com.demo.model;public class UserModel {	private int id;	private String name;	private int age;	private String address;		//get set方法}

UserDaoImpl:

package com.demo.dao.impl;import java.util.List;import org.mybatis.spring.support.SqlSessionDaoSupport;import com.demo.dao.UserDao;import com.demo.model.UserModel;public class UserDaoImpl extends SqlSessionDaoSupport implements UserDao {	public boolean insert(UserModel user) {		int count = getSqlSession().insert("insertUser", user);		if(count > 0) {			return true;		}		return false;	}	public boolean update(UserModel user) {		return true;	}	public boolean delete(String userid) {		return true;	}	public UserModel getUser(int userid) {		List<UserModel> list = getSqlSession().selectList("selectUserById", userid);		return list != null && list.size() > 0  ? list.get(0) : null; 	}	public List<UserModel> getAllUser() {		// TODO Auto-generated method stub		return null;	}}

UserServiceImpl:

package com.demo.service.impl;import org.springframework.beans.factory.annotation.Autowired;import com.demo.dao.UserDao;import com.demo.model.UserModel;import com.demo.service.UserService;public class UserServiceImpl implements UserService {	@Autowired	private UserDao userDao;		public boolean insertUser(UserModel user) {		return userDao.insert(user);	}}

UserController:

package com.demo.controller;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.servlet.ModelAndView;import com.demo.model.UserModel;import com.demo.service.UserService;@Controller@RequestMapping("/user/")public class UserController {	@Autowired	private UserService userService;		@RequestMapping("addUser.do")	public String addUser() {		return "addUser";	}		@RequestMapping("saveUser.do")	public ModelAndView saveUser(UserModel userModel) {		ModelAndView mv = new ModelAndView();		boolean b = userService.insertUser(userModel);		if(b) {			mv.setViewName("addUserSuccess");		} else {			mv.setViewName("addUserFail");		}		return mv;	}}

在applicationContext.xml中配置UserDao和UserService:

<bean id="userDao" class="com.demo.dao.impl.UserDaoImpl">		<property name="sqlSessionFactory" ref="sqlSessionFactory"></property>	</bean>	<bean id="userService" class="com.demo.service.impl.UserServiceImpl" />

在src/mybatis下创建User相关的数据库操作：

<?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="user">		<resultMap type="com.demo.model.UserModel" id="UserModel">		<result column="id" property="id" jdbcType="INTEGER"/>		<result column="name" property="name" jdbcType="VARCHAR"/>		<result column="age" property="age" jdbcType="INTEGER"/>		<result column="address" property="address" jdbcType="VARCHAR"/>			</resultMap>		<insert id="insertUser" parameterType="com.demo.model.UserModel">		insert into t_user(`name`,`age`,`address`) values(			#{name,jdbcType=VARCHAR},			#{age,jdbcType=INTEGER},			#{address,jdbcType=VARCHAR}		);	</insert>		<select id="selectUserById" parameterType="INTEGER" resultMap="UserModel">		select `id`,`name`,`age`,`address` from t_user 		where `id` = #{userid,jdbcType=INTEGER};	</select>		<select id="selectAllUser" resultType="com.demo.model.UserModel">		select `id`,`name`,`age`,`address` from t_user	</select></mapper>

7、前台页面：

在WEB-INF/page下创建页面，该路径在sprng-servlet.xml中。

addUser.jsp内容如下：

<form action="${pageContext.request.contextPath }/user/saveUser.do">		<table>			<tr>				<td>姓名</td>				<td><input type="text" name="name" /></td>			</tr>			<tr>				<td>年龄</td>				<td><input type="text" name="age" /></td>			</tr>			<tr>				<td>地址</td>				<td><input type="text" name="address" /></td>			</tr>			<tr>				<td colspan="2">					<input type="submit" value="提交" />				</td>			</tr>		</table>

8、启动项目后，通过index.jsp访问user/addUser.do进入addUser.jsp，输入信息点击提交，将信息插入到数据库，成功后，跳转至addSuccess.jsp

1楼agfagafsdfas8小时前

很有用啊，明天照着这个试一下。最近正好看项目的逻辑理不清。