0028ssm环境搭建（springmvc+spring+mybatis）

spring整合springmvc和mybatis主要分为如下几个步骤：

1、spring环境搭建

2、springmvc环境搭建

3、spring整合springmvc

4、spring整合mybatis

具体如下：

先把最基本的会用到的内容创建出来

a、创建maven项目的过程（可参考之前创建springmvc项目的过程）

b、pom.xml中引入spring、springmvc、mybatis、jdbc、mysql、jstl等一系列相关jar包

c、创建controller类、service接口和实现类、dao接口、domain实体、数据库表（如果只是搭建spring环境，只需service即可，为了后面方便，此处统一建了）

1、spring环境搭建

spring环境搭建好的一个标志就是将service交给容器管理

a、applicationContext.xml中开启注解扫描，并排除扫描controller，因为controller是要交给springmvc管理的

b、service上加注解，交给容器管理，并可以给servcie起名字

c、编写测试类EmpTest中的run1()方法测试spring环境是否搭建好

2、springmvc环境搭建

springmvc环境搭建好的一个标志就是页面发送请求能够正常访问到controller中的方法

a、web.xml中配置前端控制器和中文乱码的过滤器

b、resources下创建springmvc.xml，并改约束xmlns

　　1、开启注解扫描，只扫描controller

　　2、配置视图解析器

　　3、过滤静态资源-->webapp下建立相应目录

　　4、开启springmvc注解的支持

c、创建index.jsp-->写标签访问controller的方法

d、controller上加@Controller注解交给容器管理，并写对应的查询方法，返回"list"字符串

e、在/WEB-INF/pages下建立list.jsp

f、部署项目并启动，进行简单测试

3、spring整合springmvc

整合成功的一个标志是controller能够调用到service中的方法

a、web.xml中配置监听器ContextLoaderListener和上下文初始话参数context-param，

　　用监听器监听容器启动的时候加载上下文参数中配置的spring配置文件

b、controller中注入service

c、重新启动项目进行测试

4、spring整合mybatis

spring整合mybatis成功的标志是service能够调用到dao对象，且dao能操作数据库

a、在spring的配置文件中进行配置

　　1、配置连接池

　　2、配置SqlSessionFactory工厂（其中还需要配置映射文件路径mapperLocations）

　　3、配置扫描接口所在的包

b、dao上加上注解@MapperScan（写@Repository是不行的，无法与映射文件做关联，查询时会报错）

c、service中注入dao，并调用dao的方法

 

目录结构如下：

 

 

 

 

 

 

代码实现如下：

1、index.jsp

<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2019/12/9
  Time: 12:50
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    


    <%--访问路径是相对路径，前边没有/--%>
    springmvc测试
    

        员工姓名：

        邮箱：

        性别

        部门编号：

        
    

2、EmpController.java

package com.example.controller;

import com.example.domain.Employee;
import com.example.service.EmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;

@Controller
@RequestMapping("/emp")
public class EmpController {
    //service是spring管理的，只有spring整合了springmvc后才能依赖注入
    @Autowired
    private EmpService empService;
    @RequestMapping("/queryusers")
    public String queryusers(Model model){
        List users = empService.queryusers();
        System.out.println("执行EmpController中的queryusers");
        model.addAttribute("users",users);
        System.out.println(users);
        return "list";
    }
    @RequestMapping("addEmp")
    public void addEmp(Employee employee, HttpServletRequest request, HttpServletResponse response)throws Exception{
        empService.addEmp(employee);
        response.sendRedirect(request.getContextPath()+"/emp/queryusers");

    }
}

3、EmpDao.java

package com.example.dao;

import com.example.domain.Employee;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.stereotype.Repository;

import java.util.List;

@MapperScan
/*@Repository*/
public interface EmpDao {
    public List queryusers();

    public void addEmp(Employee employee);
}

4、Employee.java

package com.example.domain;

public class Employee {
    private int id;
    private String lastName;
    private String email;
    private String gender;
    private int dId;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public int getdId() {
        return dId;
    }

    public void setdId(int dId) {
        this.dId = dId;
    }

    @Override
    public String toString() {
        return "Employee{" +
                "id=" + id +
                ", lastName='" + lastName + '\'' +
                ", email='" + email + '\'' +
                ", gender='" + gender + '\'' +
                ", dId=" + dId +
                '}';
    }
}

5、EmpMapper.xml

    
    
        select id,lastName,email,gender from employee
    

    
        insert into employee values(null,#{lastName},#{email},#{gender},#{dId})
    

6、EmpServiceImpl.java

package com.example.service.impl;

import com.example.dao.EmpDao;
import com.example.domain.Employee;
import com.example.service.EmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.ui.Model;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;

@Service("empService")
public class EmpServiceImpl implements EmpService {
    @Autowired
    private EmpDao empDao;
    @Override
    public List queryusers() {
        List users = empDao.queryusers();
        System.out.println("执行EmpServiceImpl中的queryusers方法");
        return users;
    }

    @Override
//    @Transactional
    public void addEmp(Employee employee) throws RuntimeException{
        System.out.println("执行EmpServiceImpl中的addEmp方法");
        empDao.addEmp(employee);
        int a=10/0;
        System.out.println(a);
    }
}

7、EmpTest.java

package com.example.test;

import com.example.service.EmpService;
import com.example.service.impl.EmpServiceImpl;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class EmpTest {
    /*spring环境搭建测试 */
    @Test
    public void run1(){
        //加载配置文件
        ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
        //获取对象
        EmpService empService = (EmpServiceImpl)ac.getBean("empService");
        //调用方法
        empService.queryusers();

    }
}

8、list.jsp

<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2019/12/9
  Time: 12:45
  To change this template use File | Settings | File Templates.
--%>

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>


    


    
成功进入list页面
    
        ${user.lastName}
    

9、pom.xml

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.0.0

  com.example
  springmvc-sping-mybatis
  1.0-SNAPSHOT
  war

  springmvc-sping-mybatis Maven Webapp
  
  http://www.example.com

  
    UTF-8
    1.7
    1.7
    5.0.2.RELEASE
  

  
    
    
    
      org.springframework
      spring-aop
      ${spring.version}
    

    
    
      org.springframework
      spring-aspects
      ${spring.version}
    
    
    
      org.springframework
      spring-beans
      ${spring.version}
    
    
    
      org.springframework
      spring-context
      ${spring.version}
    
    
    
    
    
    
    
    
    
      org.springframework
      spring-jdbc
      ${spring.version}
    
    
    
      org.springframework
      spring-test
      ${spring.version}
    
    
    
      org.springframework
      spring-tx
      ${spring.version}
    
    
    
      org.springframework
      spring-web
      ${spring.version}
    
    
    
      org.springframework
      spring-webmvc
      ${spring.version}
    
    
      junit
      junit
      4.12
      compile
    
    
    
    
      org.mybatis
      mybatis-spring
      1.3.0
    
    
    
      mysql
      mysql-connector-java
      8.0.13
    
    
    
      org.mybatis
      mybatis
      3.4.1
    
    
    
      c3p0
      c3p0
      0.9.1.2
    
    
    
      jstl
      jstl
      1.2
    
    
      javax.servlet
      jsp-api
      2.0
      provided
    

  

  
    
    
      
        src/main/java
        
          **/*.properties
          **/*.xml
        
        false
      
    
    springmvc-sping-mybatis
    
      
        
          maven-clean-plugin
          3.1.0
        
        
        
          maven-resources-plugin
          3.0.2
        
        
          maven-compiler-plugin
          3.8.0
        
        
          maven-surefire-plugin
          2.22.1
        
        
          maven-war-plugin
          3.2.2
        
        
          maven-install-plugin
          2.5.2
        
        
          maven-deploy-plugin
          2.8.2
        
      
    
  

10、web.xml

        "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
        "http://java.sun.com/dtd/web-app_2_3.dtd" >


  Archetype Created Web Application
  
  
    org.springframework.web.context.ContextLoaderListener
  
  
  
    contextConfigLocation
    classpath:applicationContext.xml
  
  
  
    dispatcherServlet
    org.springframework.web.servlet.DispatcherServlet
    
      
      contextConfigLocation
      classpath:springmvc.xml
    
    
    1
  

  
    dispatcherServlet
    /
  

  
  
    characterEncodingFilter
    org.springframework.web.filter.CharacterEncodingFilter
    
      encoding
      UTF-8
    
  
  
    characterEncodingFilter
    /*
  

11、applicationContext.xml

       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:c="http://www.springframework.org/schema/c"
       xmlns:cache="http://www.springframework.org/schema/cache"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:jdbc="http://www.springframework.org/schema/jdbc"
       xmlns:jee="http://www.springframework.org/schema/jee"
       xmlns:lang="http://www.springframework.org/schema/lang"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:task="http://www.springframework.org/schema/task"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:util="http://www.springframework.org/schema/util"
       xsi:schemaLocation="http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.3.xsd
      http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
      http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
      http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
      http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd
      http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.3.xsd
      http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-4.3.xsd
      http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.3.xsd
      http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
      http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-4.3.xsd
      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd ">

    
    
        
        
    

    
    
    
        
        
        
        
    
    
    
        
        
        
    
    
    
        
        
    
    

    
    
    
        
    
    
    
        
            
            
        
    
    
    
        
        
    

12、springmvc.xml

       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:c="http://www.springframework.org/schema/c"
       xmlns:cache="http://www.springframework.org/schema/cache"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:jdbc="http://www.springframework.org/schema/jdbc"
       xmlns:jee="http://www.springframework.org/schema/jee"
       xmlns:lang="http://www.springframework.org/schema/lang"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:task="http://www.springframework.org/schema/task"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:util="http://www.springframework.org/schema/util"
       xsi:schemaLocation="http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.3.xsd
      http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
      http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
      http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
      http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd
      http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.3.xsd
      http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-4.3.xsd
      http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.3.xsd
      http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
      http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-4.3.xsd
      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd ">
    
    
        
    

    
    
        
        
        
        
    

    
    
    
    
    
    

 

如有理解不到之处，望指正！