SpringMVC实战--构建学生管理系统
搭建框架
项目分析：
搭建SSM框架步骤
1：创建一个动态web项目
2：将SSM的jar包和数据库驱动包，c3p0包导入
3：在web.xml中配置一个DispatcherServlet,指定springmvc配置文件的位置
4: 配置springmvc.xml文件
1）组件扫描（controller包）
2）配置视图解析器
5：配置spring的配置文件（beans.xml）
1）组件扫描（service包）
2)将jdbc.properties导入进来
<context:property-placeholder location="classpath:jdbc.properties"/>
3）配置数据源
4）整合mybatis
1)配置sqlSessionFactory,有两个属性
1）数据源
2）指定别名的包
2）配置Mapper包扫描器，该扫描器可以自动生成实现了mapper接口的类的对象
1）指定要扫描的mapper包的全路径
2）注入sqlSessionFactoryBeanName属性
5）配置声明式事务
1）配置事务管理器
有一个dataSource属性
2）配置事务的属性
3）配置切入点和将切入点和事务的属性关联起来
6：在web.xml 中配置监听器,加载spring配置文件
文件目录：
代码：
配置文件：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" 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>course</display-name>
<!-- needed for ContextLoaderListener -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:beans.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<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:springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- Map all requests to the DispatcherServlet for handling -->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>beans.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: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.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd">
<context:component-scan base-package="com.neuedu.service"></context:component-scan>
<context:property-placeholder location="classpath:jdbc.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="${jdbc.initialPoolSize}"></property>
<property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property>
</bean>
<!-- 整合mybatis -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="typeAliasesPackage" value="com.neuedu.po"></property>
</bean>
<!-- 扫描那个包 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.neuedu.mapper"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
<!-- 声明式事务管理 -->
<!-- 配置事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--
配置事务的属性
-->
<tx:advice id="txadvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="get*" read-only="true"/>
<tx:method name="save*" propagation="REQUIRES_NEW"/>
<tx:method name="update*" propagation="REQUIRES_NEW"/>
<tx:method name="delete*" propagation="REQUIRES_NEW"/>
<tx:method name="*"/>
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut expression="execution(* com.neuedu.service..*.*(..))" id="myPointcut"/>
<aop:advisor advice-ref="txadvice" pointcut-ref="myPointcut"/>
</aop:config>
</beans>jdbc.properties
jdbc.user=root
jdbc.password=******
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.jdbcUrl=jdbc:mysql://localhost:3306/course
jdbc.initialPoolSize=5
jdbc.maxPoolSize=20springmvc.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"
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-4.2.xsd">
<!-- springmvc 只负责 controller层 -->
<context:component-scan base-package="com.neuedu.controller"></context:component-scan>
<!-- 配置视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
ClassMapper.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.neuedu.mapper.ClassMapper">
<insert id="save" parameterType="String">
insert into tb_class values(null,#{className})
</insert>
</mapper>
接口：
ClassMapper.java
package com.neuedu.mapper;
public interface ClassMapper {
public void save(String className);
}
ClassService.java
package com.neuedu.service;
public interface ClassService {
public void save(String className);
}
文件
ClassServiceImpl.java
package com.neuedu.service.impl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.neuedu.mapper.ClassMapper;
import com.neuedu.service.ClassService;
@Service
public class ClassServiceImpl implements ClassService {
@Autowired
private ClassMapper classMapper;
@Override
public void save(String className) {
classMapper.save(className);
}
}
ClassController.java
package com.neuedu.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import com.neuedu.service.ClassService;
@Controller
public class ClassController {
@Autowired
private ClassService classService;
@RequestMapping("/save")
public String save(String className) {
classService.save(className);
return "success";
}
}
页面：
success.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>
</body>
</html>输出：成功将数据导入，框架搭建完成
