SSM整合(注解形式)

2023-11-29 23:43:58 星期三

依赖引入

 <dependencies>
        <!--servlet-api依赖-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.1</version>
            <scope>provided</scope>
        </dependency>
        <!--spring基础依赖-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.3.20</version>
        </dependency>
        <!--spring连接jdbc-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.3.20</version>
        </dependency>
        <!--spring web依赖-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>5.3.20</version>
        </dependency>
        <!--spring webmvc依赖-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.3.20</version>
        </dependency>
        <!--aop面向切面编程框架-->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.7</version>
        </dependency>
        <!--spring事务管理-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>5.3.20</version>
        </dependency>
        <!--mybatis依赖-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.4</version>
        </dependency>
        <!--mybatis与spring整合-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.2</version>
        </dependency>
        <!--mysql数据库依赖-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.29</version>
        </dependency>
        <!--dbcp连接池-->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-dbcp2</artifactId>
            <version>2.11.0</version>
        </dependency>
        <!--lombok依赖-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.30</version>
        </dependency>
    </dependencies>

2.applicationContext.xml核心配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       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/context
       http://www.springframework.org/schema/context/spring-context.xsd">

<!--扫描注解包-->
    <context:component-scan base-package="com.bboy.service.impl"/>
    <!--数据源配置-->
    <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource">
        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/qinmanage"/>
        <property name="username" value="root"/>
        <property name="password" value="127003"/>
    </bean>

    <!--SqlSession工厂-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="typeAliasesPackage" value="com.bboy.pojo"/>
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>

    <!--配置Mapper接口-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <property name="basePackage" value="com.bboy.mapper"/>
    </bean>
</beans>

3.spring-mvc.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">


<!--处理器映射器：注解方式-->
    <!--
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>
    -->
    <!--处理器适配器：注解方式-->
    <!--
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>
    -->
    <!--
        springmvc注解的驱动
        默认创建：RequestMappingHandlerMapping、RequestMappingHandlerAdapter
    -->
    <mvc:annotation-driven/>
    <context:component-scan base-package="com.bboy.controller"/>
    <!--
            视图解析器
        -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!--添加跳转目录的前缀-->
        <property name="prefix" value="/WEB-INF/"/>
        <!--添加跳转目录的后缀缀-->
        <property name="suffix" value=".jsp"/>
    </bean>

</beans>

4.web.xml

<?xml version="1.0" encoding="UTF-8"?>
<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_4_0.xsd"
         version="4.0">
    <!--Spring监听器-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!--Spring配置文件的加载-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    <!--SpringMVC前端控制器-->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!--
        在前端控制器中加载springmvc的配置文件，例如：spring-mvc.xml
        -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <!--
             配置哪些请求进入到：前端控制器
        -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

5.controller(StudentController)

package com.bboy.controller;

import com.bboy.pojo.Student;
import com.bboy.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import java.util.List;

@Controller
/**
 * @类描述：
 * @作者：秦帅
 * @时间：2023/11/29 0029 18:07:50
 */
public class StudentController {
    @Autowired
    private StudentService studentService ;

    public void setStudentService(StudentService studentService) {
        this.studentService = studentService;
    }
@RequestMapping("/query")
    public ModelAndView queryListStudents(){
        ModelAndView mav =new ModelAndView() ;
    List<Student> students = studentService.listStudents();
    mav.addObject("students",students);
    mav.setViewName("show");
    return mav;
}
}

6.service

StudentService接口

package com.bboy.service;

import com.bboy.pojo.Student;

import java.util.List;

public interface StudentService {
    public List<Student> listStudents();
}

StudentServiceImpl

package com.bboy.service.impl;

import com.bboy.mapper.StudentMapper;
import com.bboy.pojo.Student;
import com.bboy.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
@Service("studentService")
/**
 * @类描述：
 * @作者：秦帅
 * @时间：2023/11/29 0029 18:00:09
 */
public class StudentServiceImpl implements StudentService {
    @Autowired
    private StudentMapper studentMapper;

    public void setStudentMapper(StudentMapper studentMapper) {
        this.studentMapper = studentMapper;
    }

    @Override
    public List<Student> listStudents() {
        return studentMapper.listStudents();
    }
}

7.mapper

建议写mapper配置文件因为注解只能进行简单的查询

package com.bboy.mapper;

import com.bboy.pojo.Student;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

import java.util.List;
@Mapper
public interface StudentMapper {
    @Select("select * from t_student;")
    public List<Student> listStudents();
}

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