整合 SSM
时间:2022-07-26
本文章向大家介绍整合 SSM,主要内容包括其使用实例、应用技巧、基本知识点总结和需要注意事项,具有一定的参考价值,需要的朋友可以参考一下。
1.1 相关依赖
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.5</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.5</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.5</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.9.5</version>
</dependency>
1.2 配置文件
☞ spring 配置文件(application.xml)
<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"
xsi:schemaLocation="
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<!-- 开启组件扫描 -->
<context:component-scan base-package="com.software.ssm" >
<!-- 排除 controller 的扫描 -->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- 加载 propeties 文件 -->
<context:property-placeholder location="classpath:mysql.properties"></context:property-placeholder>
<!-- 配置数据源信息 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${mysql.driver}"></property>
<property name="jdbcUrl" value="${mysql.url}"></property>
<property name="user" value="${mysql.username}"></property>
<property name="password" value="${mysql.password}"></property>
</bean>
<!-- 配置 sessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!-- 加载 mybatis 核心文件-->
<property name="configLocation" value="classpath:mybatis.xml"></property>
</bean>
<!-- 扫描 mapper 所在的包 为 mapper 创建实现类-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.software.ssm.mapper"></property>
</bean>
<!-- 声明式事务控制 -->
<tx:annotation-driven/>
<!-- 引入 mvc 配置 -->
<import resource="springmvc.xml" />
</beans>
☞ spring mvc 配置文件(springmvc.xml)
<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 组件扫描 主要扫描 controller -->
<context:component-scan base-package="com.software.ssm.controller"></context:component-scan>
<!-- 配置 mvc 注解驱动 -->
<mvc:annotation-driven></mvc:annotation-driven>
</beans>
☞ mybatis 配置文件(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>
<!--定义别名-->
<typeAliases>
<package name="com.software.ssm.entity"></package>
</typeAliases>
</configuration>
☞ mysql 配置文件(mysql.properties)
mysql.driver=com.mysql.jdbc.Driver
mysql.url=jdbc:mysql://localhost:3306/db
mysql.username=root
mysql.password=root
☞ web 配置文件(web.xml)
<!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>
<!--spring 监听器-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:application.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--springmvc的前端控制器-->
<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:springmvc.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>
</web-app>
1.3 实体类
public class Student {
private Long id;
private String name;
private Integer age;
// set and get
}
1.4 mapper
/**
* Created with IntelliJ IDEA.
*
* @author Demo_Null
* @date 2020/9/9
* @description 数据访问层
*/
@Repository
public interface StudentMapper {
@Select("select * from student")
List<Student> findAll();
}
1.5 service
/**
* Created with IntelliJ IDEA.
*
* @author Demo_Null
* @date 2020/9/9
* @description 服务层
*/
@Service
public class StudentService {
@Autowired
private StudentMapper studentMapper;
public Object findAll() {
return studentMapper.findAll();
}
}
1.6 controller
/**
* Created with IntelliJ IDEA.
*
* @author Demo_Null
* @date 2020/9/9
* @description 控制器
*/
@RestController
@RequestMapping("/student")
public class StudentController {
@Autowired
private StudentService studentService;
@GetMapping("/findAll")
public Object findAll() {
return studentService.findAll();
}
}
1.7 项目截图
1.8 请求示例
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