ssm项目搭建

编辑器:idea（已经下载配置好maven和tomcat）
整合的思路

• .1. 先搭建整合的环境
• .2. 先把Spring的配置搭建完成
• .3. 再使用Spring整合SpringMVC框架
• .4. 最后使用Spring整合MyBatis框架

1.配置maven

2.新建项目



3.导入依赖包，文件是pom.xml (编辑器会提示)

    4.0.0

    org.example
    springmvc01
    1.0-SNAPSHOT

    war

    
        
        
            org.springframework
            spring-webmvc
            5.1.6.RELEASE
        

        
        
            javax.servlet.jsp.jstl
            jstl
            1.2
        
        
            org.glassfish.web
            jstl-impl
            1.2
        


        
        
            javax.servlet
            javax.servlet-api
            3.1.0
            provided
        

        
        
            javax.servlet
            jsp-api
            2.0
            provided
        

        
        
            com.alibaba
            fastjson
            1.2.54
        

        
        
            com.github.pagehelper
            pagehelper
            5.1.2
        


        
        
            org.springframework
            spring-context
            5.1.16.RELEASE
        

        
        
            org.springframework
            spring-aspects
            5.1.16.RELEASE
        
        
            org.springframework
            spring-test
            5.1.16.RELEASE
        
        
            org.springframework
            spring-jdbc
            5.1.16.RELEASE
        

        
        
            org.mybatis
            mybatis-spring
            1.3.1
        
        
        
            org.mybatis
            mybatis
            3.4.5
        

        
        
            mysql
            mysql-connector-java
            5.1.6
        
        
        
            com.alibaba
            druid
            1.1.12
        

        
        
            junit
            junit
            4.12
        

        
        
        log4j
        log4j
        1.2.17
        

        
            commons-logging
            commons-logging
            1.2
        






    

    
        
            
                src/main/java
                

                    **/*.xml
                
                true
            
        
    

4.本质是tomcat运行网站的目录，所以新建如下目录

其中，web.xml内容如下：

    

    
        my_shine
        org.springframework.web.servlet.DispatcherServlet
        
            contextConfigLocation
            classpath:mvc.xml
        
        
        1
    


    
        my_shine
        /
    


    
    
    
        encoding
        org.springframework.web.filter.CharacterEncodingFilter
        
            encoding
            utf-8
        
    
    
    
        encoding
        /*
    

    
    
        org.springframework.web.context.ContextLoaderListener
    
    
        contextConfigLocation
        classpath:applicationContext.xml
    

5.在web.xml中会引用springmvc的配置文件mvc.xml和spring的配置文件applicationContext.xml,内容如下：

    
    
        
    

    
    
        
        
            
                
                
                    
                        application/json
                    
                

                
                    
                        
                        DisableCircularReferenceDetect
                        
                        WriteMapNullValue
                        
                         
                        
                        
                        WriteNullStringAsEmpty
                        
                        WriteNullListAsEmpty
                        
                        
                    
                
            
        
    

    
    
        
        
        
        
    

    

6.在上一步中，mvc.xml扫描controller的注解 ，在controller中设置路由和控制器对应,新建·userControlller.java·，目录如下图所示：

userController.java内容如下：

package com.qf.web;

import com.github.pagehelper.PageInfo;
import com.qf.bean.BaseResultBean;
import com.qf.entiry.User;
import com.qf.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import java.text.SimpleDateFormat;
import java.util.List;

@Controller //声明后端控制器
public class UserController {


    @Autowired
    @Qualifier("userServiceImpl")
    private UserService userService;
    @GetMapping("/userlist")
    public ModelAndView queryUsers(HttpServletRequest request){ //service doGet doPost
        int page = Integer.parseInt(request.getParameter("page"));
        int size = Integer.parseInt(request.getParameter("size"));
        List userlists = userService.queryUsers(page,size);
        PageInfo pageInfo = new PageInfo(userlists);
        System.out.println("queryUsers"+userlists);
        System.out.println("pageInfo"+pageInfo);

        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("users",userlists
        );
        modelAndView.setViewName("user");
//
        return modelAndView;
    }

    @RequestMapping("/user")
    @ResponseBody
    public Object queryOne(Integer id)
    {
        System.out.println("query user id:"+id);
        List user = userService.queryOne(id);
        System.out.println(user);
        return user;
    }
    @PostMapping("/update")
    public BaseResultBean updateUser(User user)
    {
        System.out.println("update user" + user);
        userService.updateUser(user);
        BaseResultBean baseResultBean = new BaseResultBean();
        baseResultBean.setStatus(true);
        baseResultBean.setMessage("成功");
        return  baseResultBean;
    }

    @RequestMapping("/add")
    public BaseResultBean addUser(User user)
    {
        System.out.println("add user" + user);
        userService.insertUser(user);
        BaseResultBean baseResultBean = new BaseResultBean();
        baseResultBean.setStatus(true);
        baseResultBean.setMessage("成功");
        return  baseResultBean;
    }

    @RequestMapping("/deleteuser/{id}")
    public BaseResultBean deleteUser(@PathVariable Integer id)
    {
        System.out.println("delete user" + id);
        userService.deleteUser(id);
        BaseResultBean baseResultBean = new BaseResultBean();
        baseResultBean.setStatus(true);
        baseResultBean.setMessage("成功");
        return  baseResultBean;
    }


}

7.第五步中spring的配置文件applicationContext.xml如下所示

    
    
    
        
        
        
        

        
        
        
        
    

    
    
        
        
        
        
            
                classpath:com/qf/dao/*.xml
            
        

        
        
        
        

        
        
            
                
                    
                        
                            
                            true
                        
                    
                
            
        

    


    
    
        
        
    
    
    

    
    
        
    

    
    
        
    
    
    

路虽远，行则将至

8.spring.xml会读取dao层,service层下面的注解，内容如下：

不知道原理，写不去了…