SSM整合示例

墨蓝 2023-10-06 07:25 13阅读 0赞

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controller:

package org.cduck.controller;
    
    import java.util.Map;
    
    import org.cduck.entity.Student;
    import org.cduck.service.StudentService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestMapping;
    
    @RequestMapping("stu")
    @Controller
    public class StuController {
        
    
    	@Autowired
    	StudentService stuService;
    	@RequestMapping("query/{stuno}")
    	public String queryStu(@PathVariable("stuno") int stuno,Map map) {
        
    		Student student=stuService.queryStu(stuno);
    		map.put("student", student);
    		return "result";
    		
    	}
    	
    	@RequestMapping(value = "add")
    	public String addStudent(Student student) {
        
    		stuService.addStudent(student);
    		return "result";
    	}
    	
    }

student:

mapper.java:

package org.cduck.mapper;
    
    import org.cduck.entity.Student;
    
    public interface StudentMapper {
        
    	public void addStudent(Student student);
    	Student queryStu(int stuno);
    }

mapper.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="org.cduck.mapper.StudentMapper">
    
    	<insert id="addStudent" parameterType="org.cduck.entity.Student">
    			insert into student(stuNo,stuName,stuAge) values(#{stuNo},#{stuName},#{stuAge}) 
    	</insert>
    	
    	<select id="queryStu" resultType="org.cduck.entity.Student" parameterType="int">
    			select * from student
    	</select>
    </mapper>

Service:  
接口：

package org.cduck.service;
    
    import org.cduck.entity.Student;
    import org.springframework.stereotype.Service;
    
    public interface StudentService {
        
    	public void addStudent(Student student);
    	Student queryStu(int stuno);
    }

实现类：

package org.cduck.service;
    
    import org.cduck.entity.Student;
    import org.cduck.mapper.StudentMapper;
    import org.springframework.beans.factory.annotation.Autowired;
    
    public class StudentServiceImpl implements StudentService {
        
    	
    	//service依赖于Dao
    	StudentMapper studentmapper;
    
    	public void setStudentmapper(StudentMapper studentmapper) {
        
    		this.studentmapper = studentmapper;
    	}
    
    	@Override
    	public Student queryStu(int stuno) {
        
    		Student student=studentmapper.queryStu(stuno);
    		return student;
    		
    	}
    
    	@Override
    	public void addStudent(Student student) {
        
    		studentmapper.addStudent(student);
    	}
    
    }

spring配置文件：  
applicationContext.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"
    	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-4.3.xsd">
    
    
    
    
    
    <bean id="config" class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">
    	<property name="locations">
    		<array>
    			<value>classpath:db.properties</value>		
    		</array>
    	</property>
    </bean>
    
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
    	<property name="url" value="${url}"></property>
    	<property name="driverClassName" value="${driver}"></property>
    	<property name="username" value="${username}"></property>
    	<property name="password" value="${password}"></property>
    </bean>
    
    
    
    
    
    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    	<property name="dataSource" ref="dataSource"></property>
    	
    	
    	<property name="mapperLocations" value="classpath:org/cduck/mapper/*.xml"></property>
    </bean>
    
    
     <bean id="mappers" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
     
    	 	<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    	 	 	 
    	 	 	<property name="basePackage" value="org.cduck.mapper"></property>
    	 </bean>
    
    
    
    
    
    
    
    <bean id="studentService" class="org.cduck.service.StudentServiceImpl">
    	<property name="studentmapper" ref="studentMapper"></property>
    	
    </bean>
    
    
    </beans>

springMVC配置：  
springMVC.xml

前端：  
result.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Insert title here</title>
    </head>
    <body>
    ${requestScope.student.stuNo}<br>
    ${requestScope.student.stuName}<br>
    ${requestScope.student.stuAge}<br>
    </body>
    </html>

index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Insert title here</title>
    </head>
    <body>
    <a href="stu/query/1">查询一号学生</a>
    
    <form action="stu/add" method="post">
    <input name="stuNo" >
    <input name="stuName" >
    <input name="stuAge" >
    <input type="submit" value="Add">
    </form>
    </body>
    </html>

--------------------

web.xml

<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
      <display-name>SSMProject</display-name>
      <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
      </welcome-file-list>
      <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
      </context-param>
      <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
      </listener>
      
      <servlet>
        <servlet-name>springDispatcherServlet</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>springDispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
      </servlet-mapping>
    </web-app>

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