idea+spring4+springmvc+mybatis+maven实现简单增删改查CRUD

在学习spring4+springmvc+mybatis的ssm框架,idea整合简单实现增删改查功能,在这里记录一下。

原文在这里:https://my.oschina.net/finchxu/blog/3007984
工作环境:

  • Windows 10
  • jdk8(1.8)
  • IntelliJ IDEA 
  • spring 4 和 springMVC
  • MySQL 5.7
  • maven 3.3
  • mybatis 3.4
  • DBCP
  • Tomcat 8.5

项目上传到了Github方便查看:https://github.com/finch-xu/springbook 有用的话欢迎加星。

页面演示:

idea+spring4+springmvc+mybatis+maven实现简单增删改查CRUD_第1张图片

首先新建项目

如图所示新建maven的webapp

idea+spring4+springmvc+mybatis+maven实现简单增删改查CRUD_第2张图片

建数据库和数据表

CREATE DATABASE books;
CREATE TABLE `bookadmin`  (
  `bid` int(11) NOT NULL AUTO_INCREMENT,
  `bn` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
  `author` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
  `press` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
  PRIMARY KEY (`bid`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 14 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

idea+spring4+springmvc+mybatis+maven实现简单增删改查CRUD_第3张图片

这里是项目目录结构

springbook
   ├── src
   │   └── main
   │       ├── java
   │       │   └── cn
   │       │       └── book
   │       │           ├── controller
   │       │           │   └── BooksController.java
   │       │           ├── mapper
   │       │           │   ├── BooksMapper.java
   │       │           │   └── BooksMapper.xml
   │       │           ├── pojo
   │       │           │   └── Bookadmin.java
   │       │           └── service
   │       │               ├── BooksServiceImpl.java
   │       │               └── BooksService.java
   │       ├── resources
   │       │   ├── applicationContext-dao.xml
   │       │   ├── applicationContext-service.xml
   │       │   ├── applicationContext-trans.xml
   │       │   ├── jdbc.properties
   │       │   ├── log4j.properties
   │       │   ├── spring-mvc.xml
   │       │   └── sqlMapConfig.xml
   │       └── webapp
   │           ├── index.jsp
   │           └── WEB-INF
   │               ├── jsp
   │               │   ├── listBooks.jsp
   │               │   ├── savepage.jsp
   │               │   └── updatepage.jsp
   │               └── web.xml

pom.xml 找不到的包可以去https://mvnrepository.com/ 这里找,很方便的。



  4.0.0
  cn.book
  spring
  1.0-SNAPSHOT
  war
  spring Maven Webapp
  
  http://www.example.com
  
    UTF-8
    UTF-8
    
    
    4.3.19.RELEASE
    5.2.4.Final
    1.7.7
    3.3.2
    2.4
    1.9
    1.3.1
    1.9.1
  
  
    
      
          org.mybatis
          mybatis
          3.2.8
      
      
          org.mybatis
          mybatis-spring
          1.2.2
      
      
          mysql
          mysql-connector-java
          5.1.29
      
      
      org.apache.maven.plugins
      maven-compiler-plugin
      2.3.2
    
    
      taglibs
      standard
      1.1.2
      jar
    
    
      javax.servlet
      jstl
      1.2
      jar
    
    
      javax.servlet
      javax.servlet-api
      3.1.0
      
    
    
      javax.servlet.jsp
      jsp-api
      2.1
      
    
    
    
    
      commons-dbcp
      commons-dbcp
      1.4
    
    
      com.esotericsoftware.reflectasm
      reflectasm
      1.09
    
    
      org.springframework
      spring-web
      4.2.6.RELEASE
    
    
      org.springframework
      spring-webmvc
      4.2.6.RELEASE
    
    
      org.springframework
      spring-core
      ${spring.version}
      
        
          commons-logging
          commons-logging
        
      
    
    
      org.springframework
      spring-beans
      ${spring.version}
    
    
      org.springframework
      spring-context
      ${spring.version}
    
    
      org.springframework
      spring-context-support
      ${spring.version}
    
    
      org.springframework
      spring-aop
      ${spring.version}
      
        
          commons-logging
          commons-logging
        
      
    
    
      org.springframework
      spring-tx
      ${spring.version}
    
    
    
      org.springframework
      spring-orm
      ${spring.version}
    
    
      org.springframework
      spring-jdbc
      ${spring.version}
    
    
      javax.inject
      javax.inject
      1
    
    
    
      
      
      
    
    
    
    
      org.aspectj
      aspectjrt
      1.7.4
    
    
      org.aspectj
      aspectjweaver
      1.7.4
    
    
      cglib
      cglib
      3.1
    
    
    
    
      junit
      junit
      4.12
    
    
      org.springframework
      spring-test
      ${spring.version}
    
    
      org.springframework
      spring-oxm
      ${spring.version}
    
    
    
    
      org.slf4j
      slf4j-api
      ${slf4j.version}
    
    
      org.slf4j
      slf4j-log4j12
      ${slf4j.version}
    
    
    
      org.slf4j
      jcl-over-slf4j
      ${slf4j.version}
    
    
    
      org.slf4j
      jul-to-slf4j
      ${slf4j.version}
    
    
    
      commons-lang
      commons-lang
      2.6
    
    
      commons-io
      commons-io
      ${commons-io.version}
    
    
      commons-codec
      commons-codec
      ${commons-codec.version}
    
    
      commons-fileupload
      commons-fileupload
      ${commons-fileupload.version}
    
    
      commons-beanutils
      commons-beanutils
      ${commons-beanutils.version}
      
        
          commons-logging
          commons-logging
        
      
    
    
      org.projectlombok
      lombok
      1.16.18
      provided
    
  
  
    install
    
      
        
          org.apache.maven.plugins
          maven-compiler-plugin
          2.3.2
          
            1.8
            1.8
            256M
          
        
        
          org.apache.maven.plugins
          maven-idea-plugin
          2.2
          
            true
            true
          
        
        
          org.apache.maven.plugins
          maven-resources-plugin
          2.4.3
        
        
          org.apache.maven.plugins
          maven-clean-plugin
          2.4.1
          
            
              
                activemq-data
              
            
          
        
        
          org.apache.maven.plugins
          maven-install-plugin
          2.3.1
        
        
          maven-remote-resources-plugin
          1.1
        
        
          org.apache.maven.plugins
          maven-jar-plugin
          2.2
        
        
          org.apache.maven.plugins
          maven-dependency-plugin
          2.1
        
        
          org.apache.maven.plugins
          maven-surefire-plugin
          2.5
        
        
          org.apache.maven.plugins
          maven-checkstyle-plugin
          2.6
        
        
          org.codehaus.mojo
          exec-maven-plugin
          1.1.1
        
      
    
    
      
        org.apache.maven.plugins
        maven-surefire-plugin
        
          false
          true
          false
          
            **/*Test.java
          
        
      
    
     
      
        src/main/java
        
          **/*.properties
          **/*.xml
        
        false
      
       
       src/main/resources
       
         **/*.properties
         **/*.xml
       
       false
       
    
  

一定要注意这段内容,在maven打包war时扫描这些xml文件     

      
        src/main/java
        
          **/*.properties
          **/*.xml
        
        false
      
       
       src/main/resources
       
         **/*.properties
         **/*.xml
       
       false
       

resources

applicationContext-dao.xml 用的dbcp连接池。



    
    
        
    
    
        
        
        
        
        
        
        
        
    
    
        
        
        
        
        
    
    
    
        
        
    

applicationContext-service.xml



    
    

applicationContext-trans.xml



    
    
        
        
    
    
    
        
            
            
            
            
            
            
            
            
        
    
    
    
        
            
    

jdbc.properties 这里要注意应定要加上“jdbc.”的前缀。我用的是mysql5.7所以driver直接这么写就行,如果是mysql6及以上的就不一样了,具体百度吧。

如果遇到什么时区问题,记得在url后边再加上时区设置就行了。

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/books?useUnicode=true&characterEncoding=utf-8
jdbc.username=root
jdbc.password=12345678
jdbc.maxActive=10
jdbc.maxIdle=5

spring-mvc.xml



    
    
    
    
        
    
    
    
    
    
    
        
        
        
    

sqlMapConfig.xml






web.xml 这里的最后一部分(有注释的那里)写的是/而不是/*,因为用了后者就把jsp也当静态文件了,访问页面直接显示源代码而不是解析jsp。



    Archetype Created Web Application
    
        index.jsp
    
    
    
        contextConfigLocation
        classpath:applicationContext*.xml
    
    
    
        org.springframework.web.context.ContextLoaderListener
    
    
    
        encoding
        org.springframework.web.filter.CharacterEncodingFilter
        
        
            encoding
            UTF-8
        
    
    
        encoding
        /*
    
    
    
        springmvc-web
        org.springframework.web.servlet.DispatcherServlet
        
            contextConfigLocation
            classpath:spring-mvc.xml
        
    
    
        springmvc-web
        /
    

然后就是代码

Mapper部分:

BooksMapper.xml





    
        bookadmin
    

    
        bid,bn,author,press
    
    
        
        
        
        
    
    
        INSERT INTO
        
        
            bn,author,
            
                press,
            
        
        
            #{bn,jdbcType=VARCHAR},#{author,jdbcType=VARCHAR},
            
                #{press,jdbcType=VARCHAR},
            
        
    
    
    
    
        update
        
        set bn = #{bn},author = #{author},press = #{press}
        where bid = #{bid}
    
    
        delete
        from
        
        where bid = #{bid}
    
    

BooksMapper.java

package cn.book.mapper;

import cn.book.pojo.Bookadmin;

import java.util.List;

public interface BooksMapper{
    List list();
    int insert(Bookadmin record);
    int update(Bookadmin b);
    int delete(Bookadmin bid);
    Bookadmin getBookByBid(Integer bid);
}

POJO实体

Bookadmin.java

package cn.book.pojo;

public class Bookadmin {
    Integer bid;
    String bn;
    String author;
    String press;
    public Integer getBid() {
        return bid;
    }
    public void setBid(Integer bid) {
        this.bid = bid;
    }
    public String getBn() {
        return bn;
    }
    public void setBn(String bn) {
        this.bn = bn;
    }
    public String getAuthor() {
        return author;
    }
    public void setAuthor(String author) {
        this.author = author;
    }
    public String getPress() {
        return press;
    }
    public void setPress(String press) {
        this.press = press;
    }
}

service部分

BooksService.java

package cn.book.service;

import cn.book.pojo.Bookadmin;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public interface BooksService {
    List list();
    int insertBook(Bookadmin bookadmin);
    int update(Bookadmin b);
    int deleteBookByBid(Bookadmin bid);
    Bookadmin getBookByBid(int bid);
}

BooksServiceImpl.java

package cn.book.service;

import cn.book.mapper.BooksMapper;
import cn.book.pojo.Bookadmin;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class BooksServiceImpl implements BooksService {
    @Autowired
    private BooksMapper booksMapper;
    //    列出数据
    @Override
    public List list(){
        List list = this.booksMapper.list();
        return list;
    }
    //    插入数据
    @Override
    public int insertBook(Bookadmin bookadmin){
        return booksMapper.insert(bookadmin);
    }
    //    更新数据
    @Override
    public int update(Bookadmin b){
        return booksMapper.update(b);
    }
    //    删除数据
    @Override
    public int deleteBookByBid(Bookadmin bid){
        return booksMapper.delete(bid);
    }
    @Override
    public Bookadmin getBookByBid(int bid){
        return booksMapper.getBookByBid(bid);
    }
}

Controller部分

BooksController.java

package cn.book.controller;

import cn.book.pojo.Bookadmin;
import cn.book.service.BooksService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;

import java.util.List;

@Controller
@RequestMapping("/a")
public class BooksController {
    @Autowired
    BooksService booksService;
    //列出数据表格
    //    设置listBooks页面(list第一种写法)
    @RequestMapping("/listBooks")
    public ModelAndView listBooks(){
        ModelAndView mav = new ModelAndView();
        List bb = booksService.list();
        mav.addObject("bb",bb);
        mav.setViewName("listBooks");
        return mav;
    }
    //    list的第二种写法
//    @RequestMapping("/listBooks")
//    public String listBooks(Model model){
//        List bb = booksService.list();
//        model.addAttribute("bb",bb);
//        return "listBooks";
//    }
    //    添加数据(两部分)
    //    第一步:跳转到这里并添加图书信息,点击添加按钮就执行下边第二段代码
    @RequestMapping("/addBooks0")
    public String addBooks0(){
        return "savepage";
    }
    //    第二步:把下边的页面数据返回给后端,再跳转到listBooks页面
    @RequestMapping(value = "/addBooks",method = RequestMethod.POST)
    public String addBooks(Bookadmin bookadmin){
        booksService.insertBook(bookadmin);
        return "redirect:listBooks";
    }
    //    修改数据(两部分)
    //    第一步:更新图书,先通过bid找到图书,并列在/updatepage/{bid}页面上,
    @RequestMapping("/updatepage/{bid}")
    public String updatepage(@PathVariable("bid") int bid,Model model){
        model.addAttribute("bookadmin",booksService.getBookByBid(bid));
        return "updatepage";
    }
    //    第二步:然后修改即可,在这里点更新提交数据给后端
    @RequestMapping(value = "/update",method = RequestMethod.POST)
    public String update(Bookadmin b){
        booksService.update(b);
        return "redirect:listBooks";
    }
    //    删除图书数据
    @RequestMapping("/deleteBooksByBid")
    public String deleteBooksByBid(Bookadmin bid){
        booksService.deleteBookByBid(bid);
        return "redirect:listBooks";
    }
}

JSP页面

listBooks.jsp 列出所有的图书信息(并且包含添加、修改和删除的功能按钮)

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%--^^^^^添加对jstl列表的支持^^^^^--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    listBooks


<%--varStatus="ct"--%> <%----%>
图书BID 书名 作者 出版社 修改 删除
${b.bid} ${b.bn} ${b.author} ${b.press} 修改 删除
添加图书(跳转页面)
书名 作者 出版社

savepage.jsp 添加图书并返回到上边的列表页面

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    添加图书



书名:
作者:
出版社:

updatepage.jsp 更新和修改图书信息

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    更新&修改 图书信息


编辑图书信息!

书名:
作者:
出版社:

然后可以在idea里开一个tomcat来启动项目,实现简单的增删改查功能。

访问http://localhost:8080/springbook_war_exploded/a/listBooks就得到页面:

idea+spring4+springmvc+mybatis+maven实现简单增删改查CRUD_第4张图片

项目上传到了Github方便查看:https://github.com/finch-xu/springbook 有用的话欢迎加星。

转载需注明本文地址:https://my.oschina.net/finchxu/blog/3007984

感谢:

controller的详细讲解:https://www.cnblogs.com/pophope/p/5619504.html

https://blog.csdn.net/Peng_Hong_fu/article/details/53536862

https://www.javatpoint.com/spring-mvc-crud-example

https://www.journaldev.com/3531/spring-mvc-hibernate-mysql-integration-crud-example-tutorial

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