SpringMVC第五次课 SSM整合
作者：互联网
SSM框架整合之第五次课
复习：
spring 业务层
springmvc 表现层
mybatis 持久层
1.整合目标
Spring框架，来整合其他框架，想到Spring第一次课，兼容性比较好。还可以整合其他xxx框架。
Spring框架整合其他两个框架
2.项目搭建
自己搭建，比较简单的maven web项目.
3.依赖创建
pom.xml的jar
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.aaa</groupId>
<artifactId>ssm01</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<!--版本号 -->
<spring.version>5.3.8</spring.version>
<mybatis.version>3.5.7</mybatis.version>
<mysql.version>8.0.25</mysql.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</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-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.6</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.20</version>
</dependency>
<!-- 其他jar依赖，需要的时候，再加 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.2.4</version>
</dependency>
</dependencies>
</project>
4.web.xml文件
这个文件，在tomcat,只要tomcat启动，就加载这个文件.
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">
<display-name>Archetype Created Web Application</display-name>
<!-- 启动spring监听器,加载spring核心配置文件 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring.xml</param-value>
</context-param>
<!--配置前端核心控制器DispatcherServlet，加载springmvc的核心配置文件-->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring_mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- utf-8解决中文乱码 -->
<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>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
5.db.properties配置
jdbc.driverClassName=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmdb?useTimezone=true&useUnicode=true&characterEncoding=utf8&useSSL=false
jdbc.username=root
jdbc.password=root
6.spring.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.1.xsd">
<context:component-scan base-package="com.aaa.service,com.aaa.dao"/>
<!-- spring加载数据库配置文件 -->
<context:property-placeholder location="classpath:db.properties"/>
<!-- dataSource -->
<bean id="datasource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean>
<!-- 配置sqlsessionfactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="datasource"></property>
<!-- 扫描所有的mapper xml -->
<property name="mapperLocations" value="classpath:mapper/*.xml"></property>
<!-- <property name="configLocation" value="classpath:mybatisConfig.xml"></property> -->
</bean>
<!-- 把所有mapper接口生成代理类，注入到Spring容器中 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.aaa.dao"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
</beans>
7.spring_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:mvc="http://www.springframework.org/schema/mvc"
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">
<!--扫描控制器包-->
<context:component-scan base-package="com.aaa.controller"></context:component-scan>
<mvc:default-servlet-handler/>
<mvc:annotation-driven>
</mvc:annotation-driven>
<!--配置spring mvc默认的jsp视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!--配置返回视图的前缀-->
<property name="prefix" value="/WEB-INF/views/"></property>
<!--配置返回视图的后缀-->
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
8.java层实现
控制器代码：
package com.aaa.controller;
import com.aaa.entity.Room;
import com.aaa.service.RoomService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.ModelAndView;
@Controller
@RequestMapping("room")
public class RoomController {
@Autowired
RoomService roomService;
@RequestMapping("/saveRoom")
public String saveRoom(Room room){
int result=roomService.saveRoom(room);
System.out.println(room);
System.out.println(result);
return "room/roomlist";
}
@RequestMapping("/toaddRoom")
public String toAddRoom(){
return "room/addRoom";
}
}
dao层接口实现
package com.aaa.dao;
import com.aaa.entity.Room;
public interface RoomDao {
public int saveRoom(Room room);
}
实体类代码实现
package com.aaa.entity;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class Room {
private Integer id;
private String roomcode;
private Integer status;
}
业务层代码实现
package com.aaa.service;
import com.aaa.entity.Room;
public interface RoomService {
public int saveRoom(Room room);
}
业务层实现类代码：
package com.aaa.service.impl;
import com.aaa.dao.RoomDao;
import com.aaa.entity.Room;
import com.aaa.service.RoomService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service("roomService")
public class RoomServiceImpl implements RoomService {
@Autowired
RoomDao roomDao;
@Override
public int saveRoom(Room room) {
return roomDao.saveRoom(room);
}
}
dao层实现类，在resources下新建mapper目录，创建RoomDaoMapper.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.aaa.dao.RoomDao">
<insert id="saveRoom" parameterType="com.aaa.entity.Room">
insert into room values(#{id},#{roomcode},#{status})
</insert>
</mapper>
9.测试页面
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<html>
<head>
<title>增加自习室</title>
<base href="<%=basePath%>">
</head>
<body>
<%-- <form action="saveRoom" method="post">--%>
<form action="room/saveRoom" method="post">
<label for="rid">编号</label>
<input type="text" name="id" id="rid"><br>
<label for="roomcode">名称</label>
<input type="text" name="roomcode" id="roomcode"><br>
<label for="rstatus">状态</label>
空闲
<input type="radio" name="status" id="rstatus" value="0"/>
借用
<input type="radio" name="status" checked="checked" value="1"/>
<input type="submit" value="提交">
</form>
</body>
</html>
7.1 测试整合之后的helloworld,就是index.jsp页面是否正常运行;
7.2 可以自己动手写代码，把各层类 、接口填充完毕；或自动生成；测试Controller的跳转;
两个路径问题：
7.3 4等来回测试页面action跳转问题.
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<base href="<%=basePath%>">
标签：aaa,SpringMVC,spring,springframework,SSM,第五次,import,org,com 来源： https://blog.csdn.net/zhangchen124/article/details/123180843