整合 SSM

不念不忘少年蓝@ 2022-12-05 05:21 29阅读 0赞

### 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）**

**☞ 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">
    
        
        <context:component-scan base-package="com.software.ssm.controller"></context:component-scan>
    
        
        <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>
    
        
        <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>
        
        <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>
    
        
        <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 ###

![在这里插入图片描述][20200909154318834.png_pic_center]

### 1.8 请求示例 ###

![在这里插入图片描述][20200909154229555.png_pic_center]

[20200909154318834.png_pic_center]: /images/20221123/eed4ccaee5d24ab783a0afd39ac0844f.png
[20200909154229555.png_pic_center]: /images/20221123/ff249c30a36b42548b7dcd205b0563df.png