四：SSM框架整合
Spring+Spring Mvc+Mybatis整合：
代码实现：
1.创建maven工程 pom.xml
<dependencies>
<!-- spring mvc-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.3.RELEASE</version>
</dependency>
<!-- spring JDBC-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.3.RELEASE</version>
</dependency>
<!-- Spirng Aop-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>5.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>5.2.3.RELEASE</version>
</dependency>
<!-- Mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!-- mysql的驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.19</version>
</dependency>
<!-- C3P0-->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<!-- JSTL-->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- ServletAPI-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
</dependency>
<!-- lombox-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.10</version>
</dependency>
</dependencies>
2.依次搭建 Web.xml
配置Spring Mvc 、Spring 设置字符编码过滤器、加载静态资源
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>Archetype Created Web Application</display-name>
<!-- Spring-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:Spring.xml</param-value>
</context-param>
<!-- 监听器-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- SpingMvc-->
<servlet>
<servlet-name>dispatcher</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>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 字符编码过滤器-->
<filter>
<filter-name>character</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>
<!-- 请求相应编码-->
<init-param>
<param-name>forceRequestEncoding</param-name>
<param-value>utf-8</param-value>
</init-param>
<init-param>
<param-name>forceResponseEncoding</param-name>
<param-value>utf-8</param-value>
</init-param>
<init-param>
<param-name>character</param-name>
<param-value>/*</param-value>
</init-param>
</filter>
<!-- 加载静态资源-->
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.js</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.css</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.jpg</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.png</url-pattern>
</servlet-mapping>
</web-app>
3创建相应框架的配置文件
spring.xml
springmvx.xml
mybatis.xml
-
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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="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.xsd http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd"> <!-- C3p0数据源--> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="user" value="root"></property> <property name="password" value="123456"></property> <property name="driverClass" value="com.mysql.jdbc.Driver"></property> <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/text?serverTimezone=UTC&useUnicode=true&characterEncoding=utf8"></property> </bean> <!-- sqlSessionFactory--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"></property> <property name="mapperLocations" value="classpath:com/southwind/repository/*.xml"></property> <property name="configLocation" value="classpath:mybatis.xml"></property> </bean> <!-- 扫描Mapper接口--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.southwind.repository"></property> </bean> <!-- 事物管理--> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 配置事物增强--> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="*"/> </tx:attributes> </tx:advice> <aop:config> <aop:pointcut id="txPoint" expression="execution(*com.southwind.service.impl.*.*(..)"/> <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"></aop:advisor> </aop:config> </beans> -
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> <settings> <!-- 打印SQL--> <setting name="logImpl" value="STDOUT_LOGGING"/> <!-- 延迟加载--> <!-- <setting name="lazyLoadingEnabled" value="true"/>--> <!-- 开启二级缓存--> <!-- <setting name="cacheEnabled" value="true"/>--> </settings> <typeAliases> <!-- 指定一个包mybatis会在指定的包名下搜索需要的javaBean--> <package name="com.southwind.entity"></package> </typeAliases> </configuration> -
Springmvc.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/cache" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd"> <mvc:annotation-driven/> <!-- 配置扫包--> <context:component-scan base-package="com.southwind"></context:component-scan> <!-- 视图解析器--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver"> <!-- 前缀--> <property name="prefix" value="/"></property> <!-- 后缀--> <property name="suffix" value=".jsp"></property> </bean> </beans>
4.实体类
package com.southwind.entity;
import lombok.Data;
@Data
public class User {
private Integer id;
private String name;
private Integer money;
}
5.Handeler
package com.southwind.controller;
import com.southwind.serivce.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
@Controller
@RequestMapping("/user")
public class UserHandler {
@Autowired
private UserService userService;
@GetMapping("index")
public ModelAndView index(){
ModelAndView modelAndView=new ModelAndView();
modelAndView.setViewName("index");
modelAndView.addObject("list",userService.findAll());
return modelAndView;
}
}
6.业务Service
package com.southwind.serivce;
import com.southwind.entity.User;
import java.util.List;
public interface UserService {
public List<User> findAll();
}
package com.southwind.serivce.impl;
import com.southwind.entity.User;
import com.southwind.repository.UserRepository;
import com.southwind.serivce.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserRepository userRepository;
@Override
public List<User> findAll() {
return userRepository.findAll();
}
}
7.持久层：Mybatis
package com.southwind.repository;
import com.southwind.entity.User;
import java.util.List;
public interface UserRepository {
public List<User> findAll();
}
<?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.shouthwind.repository.UserRepository" >
<select id="findAll" resultType="User">
select *from people
</select>
</mapper>
8.jsp视图
<%--
Created by IntelliJ IDEA.
User: 郝泾钊
Date: 2022-04-09
Time: 21:43
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@page isELIgnored="false" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<c:forEach items="${list}" var="user">
${user.id}-${user.name}-${user.money}
</c:forEach>
</body>
</html>
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