IDEA写套简单的SSM+maven的增删改查

IDEA写套简单的SSM+maven的增删改查

我们先准备好IDEA

首先我们先来看一下我们所要创建的各个包名吧

1、DAO层: DAO层主要是做数据持久层的工作，负责与数据库进行联络的一些任务都封装在此。

2、Service层: Service层 主要负责业务模块

的逻辑应用设计。同样是首先设计接口，再设计其实现的类,接着再Spring的配置文件中配置其实现的关联。

3、Controller层:Controller层负责具体的业务模块流程的控制，在此层里面要调用Serice层的接口来控制业务流程，控制的配置也同样是在Spring的配置文件里面进行，针对具体的业务流程。

4、View层此层与控制层结合比较紧密，需要二者结合起来协同工发。View层 主要负责前台jsp页面的表示。

Controller层里面的FlowerController如下

package cn.kj.controller;

import cn.kj.Service.FlowerService;
import cn.kj.Service.FlowerServicelmpl;
import cn.kj.pojo.Flower;
import org.apache.ibatis.annotations.Param;
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 org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import java.util.List;

@Controller
public class FlowerController {
    @Autowired
    private FlowerServicelmpl fl;

    @RequestMapping("/getAll")
    @ResponseBody
    public List getAll() {
        return fl.getAll();
    }
    //先根据id查询出来再修改
        @RequestMapping ("/getInfo")
        @ResponseBody
        public ModelAndView getInfo(@RequestParam("id") int id) {
            ModelAndView mv = new ModelAndView();
            mv.addObject("info", fl.getinfo(id));
            mv.setViewName("jsp/update");
            return mv;
        }
        //新增
        @RequestMapping ("/add")
        @ResponseBody
        public ModelAndView add (Flower flower){
        ModelAndView model=new ModelAndView();
            int  i=fl.add(flower);
            model.setViewName("index");
            return model;
        }

//删除
    @RequestMapping ("/delete")
    @ResponseBody
        public ModelAndView del ( @Param("id") int id){
        ModelAndView model=new ModelAndView();
             fl.delete(id);
             model.setViewName("index");
           return model;
        }
//修改
    @RequestMapping ("/update")
    @ResponseBody
        public ModelAndView update (Flower flower){
        ModelAndView model=new ModelAndView();
        fl.update(flower);
        model.setViewName("index");
        return model;
        }
   }

Dao层里面的FlowerMapper、FlowerMapper.xml如下

package cn.kj.dao;

import cn.kj.pojo.Flower;

import java.util.List;

public interface FlowerMapper {
    List getAll();//查询
    int add(Flower flower);//新增
    int delete(int id);//删除
    Flower getinfo(int id);//根据id修改
    int update(Flower flower);//修改
}

//查询的sql语句
    
        select * from  flower
    
//删除的sql语句
    
        delete from flower where id = #{id}
    
//新增的sql语句
    
        INSERT INTO `flower`.`flower`( `name`, `anothername`, `property`, `price`, `production`) VALUES
        (#{name}, #{anothername}, #{property}, #{price}, #{production});
    
//修改的sql语句
    
        UPDATE `flower` SET `name` = #{name}, `anothername` = #{anothername}, `property` = #{property}, `price` =#{price}, `production` = #{production} WHERE `id` = #{id};
    
//根据id查询
    
          select * from  flower where id = #{id}
    

实体类 Flower如下
然后用get、set封装

package cn.kj.pojo;

public class Flower {

    private int id;

    public int getId() {
        return id;
    }

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

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getAnothername() {
        return anothername;
    }

    public void setAnothername(String anothername) {
        this.anothername = anothername;
    }

    public String getProperty() {
        return property;
    }

    public void setProperty(String property) {
        this.property = property;
    }

    public int getPrice() {
        return price;
    }

    public void setPrice(int price) {
        this.price = price;
    }

    private String name;
    private String anothername;
    private String property;
    private String production;

    public String getProduction() {
        return production;
    }

    public void setProduction(String production) {
        this.production = production;
    }

    private int price;
}

Service层里面FlowerService如下
和Dao层里面的FlowerMapper一样的

package cn.kj.Service;

import cn.kj.pojo.Flower;

import java.util.List;

public interface FlowerService {
    List getAll();
    int add(Flower flower);
    int delete(int id);
    Flower getinfo(int id);
    int update(Flower flower);
}

Service层里面FlowerServicelmpl如下
implements实现FlowerServicelmpl

package cn.kj.Service;

import cn.kj.dao.FlowerMapper;
import cn.kj.pojo.Flower;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
@Service
public class FlowerServicelmpl implements FlowerService {
    @Autowired
    private FlowerMapper Flower;
    @Override
    public List getAll() {
        return Flower.getAll();
    }

    @Override
    public int add(Flower flower) {
        return Flower.add(flower);
    }

    @Override
    public int delete(int id) {
        return Flower.delete(id);
    }

    @Override
    public Flower getinfo(int id) {
        return Flower.getinfo(id);
    }

    @Override
    public int update(Flower flower) {
        return Flower.update(flower);
    }
}

database.properties 数据库连接的配置

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/flower?useUnicode=true&characterEncoding=utf-8
username=root//连接数据库的用户名
password=caikaijin//连接数据库的密码

index.jsp页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

 
    



    //下面的名字随便取
    

    

        
XX信息列表
    
    

        
新增
    

        
编号
        
名称
        
名字
        
随便
        
价格
        
地方
        
操作
    

add.jsp新增页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    



    名称:


    名字:


    随便:


    价格:


    价格:


    

update.jsp修改的页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    



    名称:


    名称:


    名字:


    价格:


    地方:


    

最后两步
一、要写好web.xml

  
  
    characterEncodingFilter
    org.springframework.web.filter.CharacterEncodingFilter
    
      encoding
      UTF-8
    
    
      forceEncoding
      true
    
  
  
  
    encodingFilter
    
      org.springframework.web.filter.CharacterEncodingFilter
    
    
      encoding
      UTF-8
    

  
  
    encodingFilter
    /*
  

  
    characterEncodingFilter
    /*
  

  
    default
    *.js
    *.css
    /assets/*"
    /images/*
  

  
    contextConfigLocation
    classpath*:spring.xml
  
  
    org.springframework.web.context.ContextLoaderListener
  

  
  
    SSM4
    
      org.springframework.web.servlet.DispatcherServlet
    
    
      contextConfigLocation
      classpath*:springmvc.xml
    
    1
  
  
    SSM4
    /
  

最后一步，也是最重要的一步
要把这些复制粘贴到pom.xml然后等待，等到不bug的时候就可以了

  4.0.0

  SSM4

  SSM4

  1.0-SNAPSHOT

  war

  SSM4 Maven Webapp

  


  http://www.example.com



  
    UTF-8
    1.7
    1.7
    4.3.13.RELEASE
  

  
    
      junit
      junit
      3.8.1
      test
    

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

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

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

    
      org.springframework
      spring-context-support
      ${spring.version}
    

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

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

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

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


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

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

    
    
      javax.servlet
      javax.servlet-api
      3.1.0
    
    
    
    
      javax.servlet.jsp
      javax.servlet.jsp-api
      2.3.1
    
    
    
    
      javax.servlet
      jstl
      1.2
    
    

    
    
      log4j
      log4j
      1.2.17
    
    
      org.slf4j
      slf4j-api
      1.7.25
    
    
      org.slf4j
      slf4j-log4j12
      1.7.25
      test
    
    
      org.slf4j
      slf4j-simple
      1.7.25
      test
    
    
    

    
    
      org.mybatis
      mybatis
      3.4.2
    
    
    
    
      org.mybatis
      mybatis-spring
      1.3.0
    
    
    
    
      mysql
      mysql-connector-java
      5.1.29
    

    
    
    
      com.fasterxml.jackson.core
      jackson-databind
      2.8.9
    

    
      commons-dbcp
      commons-dbcp
      1.4
    

    
      commons-pool
      commons-pool
      1.5.4
    

    
      com.alibaba
      fastjson
      1.2.38
    

    
    
      com.github.pagehelper
      pagehelper
      5.0.0
    
  

  
    
      
        src/main/java
        
          **/*.xml
        
      
    
    SSM4
    
      
        
          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