利用idea创建一个基本的smm项目（带增删改查）

环境  idea  jdk1.8  tomcat  mysql

打开idea选择创建一个maven项目

然后点击next，next，finsh

然后看项目的结构

如图所示

接着创建com包，再在com包下新建四个包，分别命名为：

 

自定义pom.xml

xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0modelVersion>

 <groupId>com.ligroupId>
 <artifactId>ssm_test_2artifactId>
 <version>1.0-SNAPSHOTversion>
 <packaging>warpackaging>

 <name>ssm_test_2 Maven Webappname>
 
 <properties>
   <srping.version>4.0.2.RELEASEsrping.version>
   <mybatis.version>3.2.8mybatis.version>
   <slf4j.version>1.7.12slf4j.version>
   <log4j.version>1.2.17log4j.version>
   <druid.version>1.0.9druid.version>
 properties>
 
 <dependencies>
   
   <dependency>
     <groupId>javax.servletgroupId>
     <artifactId>javax.servlet-apiartifactId>
   dependency>
   

   
   <dependency>
     <groupId>javax.servlet.jspgroupId>
     <artifactId>javax.servlet.jsp-apiartifactId>
     <version>2.3.1version>
   dependency>
   
   <dependency>
     <groupId>junitgroupId>
     <artifactId>junitartifactId>
     <version>4.11version>
     
     <scope>testscope>
   dependency>

   
   <dependency>
     <groupId>org.springframeworkgroupId>
     <artifactId>spring-testartifactId>
     <version>${srping.version}version>
   dependency>
   <dependency>
     <groupId>org.springframeworkgroupId>
     <artifactId>spring-coreartifactId>
     <version>${srping.version}version>
   dependency>
   <dependency>
     <groupId>org.springframeworkgroupId>
     <artifactId>spring-oxmartifactId>
     <version>${srping.version}version>
   dependency>
   <dependency>
     <groupId>org.springframeworkgroupId>
     <artifactId>spring-txartifactId>
     <version>${srping.version}version>
   dependency>
   <dependency>
     <groupId>org.springframeworkgroupId>
     <artifactId>spring-jdbcartifactId>
     <version>${srping.version}version>
   dependency>
   <dependency>
     <groupId>org.springframeworkgroupId>
     <artifactId>spring-aopartifactId>
     <version>${srping.version}version>
   dependency>
   <dependency>
     <groupId>org.springframeworkgroupId>
     <artifactId>spring-contextartifactId>
     <version>${srping.version}version>
   dependency>
   <dependency>
     <groupId>org.springframeworkgroupId>
     <artifactId>spring-context-supportartifactId>
     <version>${srping.version}version>
   dependency>
   <dependency>
     <groupId>org.springframeworkgroupId>
     <artifactId>spring-expressionartifactId>
     <version>${srping.version}version>
   dependency>
   <dependency>
     <groupId>org.springframeworkgroupId>
     <artifactId>spring-ormartifactId>
     <version>${srping.version}version>
   dependency>
   <dependency>
     <groupId>org.springframeworkgroupId>
     <artifactId>spring-webartifactId>
     <version>${srping.version}version>
   dependency>
   <dependency>
     <groupId>org.springframeworkgroupId>
     <artifactId>spring-webmvcartifactId>
     <version>${srping.version}version>
   dependency>
   
   
   <dependency>
     <groupId>org.mybatisgroupId>
     <artifactId>mybatisartifactId>
     <version>${mybatis.version}version>
   dependency>
   <dependency>
     <groupId>org.mybatisgroupId>
     <artifactId>mybatis-springartifactId>
     <version>1.2.2version>
   dependency>
   
   
   <dependency>
     <groupId>mysqlgroupId>
     <artifactId>mysql-connector-javaartifactId>
     <version>5.1.35version>
   dependency>
   
   <dependency>
     <groupId>commons-dbcpgroupId>
     <artifactId>commons-dbcpartifactId>
     <version>1.2.2version>
   dependency>
   
   <dependency>
     <groupId>jstlgroupId>
     <artifactId>jstlartifactId>
     <version>1.2version>
   dependency>
   
   <dependency>
     <groupId>log4jgroupId>
     <artifactId>log4jartifactId>
     <version>${log4j.version}version>
   dependency>
   <dependency>
     <groupId>org.slf4jgroupId>
     <artifactId>slf4j-apiartifactId>
     <version>${slf4j.version}version>
   dependency>
   <dependency>
     <groupId>org.slf4jgroupId>
     <artifactId>slf4j-log4j12artifactId>
     <version>${slf4j.version}version>
   dependency>
   
   <dependency>
     <groupId>com.alibabagroupId>
     <artifactId>druidartifactId>
     <version>${druid.version}version>
   dependency>
 dependencies>

 <build>
   
   <resources>
     <resource>
       <directory>src/main/javadirectory>
       <includes>
         <include>**/*.propertiesinclude>
         <include>**/*.xmlinclude>
       includes>
       <filtering>falsefiltering>
     resource>
     <resource>
       <directory>src/main/resourcesdirectory>
       <includes>
         <include>**/*.propertiesinclude>
         <include>**/*.xmlinclude>
       includes>
       <filtering>falsefiltering>
     resource>
   resources>
   
   <plugins>
     <plugin>
       <groupId>org.apache.maven.pluginsgroupId>
       <artifactId>maven-compiler-pluginartifactId>
       <version>3.2version>
       <configuration>
         <source>1.8source>
         <target>1.8target>
         <encoding>UTF-8encoding>
       configuration>
     plugin>
   plugins>
 build>
project>

在resource包下新建Directory:mapper(用来放xxMapper.xml)

添加jdbc.properties和lo4j.properties文件

jdbc.properties

driver=com.mysql.jdbc.Driver
url=jdbc\:mysql\://localhost\:3306/test
username=root
password=123456

initialSize=0

maxActive=20

maxIdle=20

minIdle=1

maxWait=60000

lo4j.properties文件

log4j.rootLogger=DEBUG,CONSOLE,file
#log4j.rootLogger=ERROR,ROLLING_FILE
log4j.logger.com.qhit.dao=debug
log4j.logger.com.ibatis=debug
log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=debug
log4j.logger.com.ibatis.common.jdbc.ScriptRunner=debug
log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=debug
log4j.logger.java.sql.Connection=debug
log4j.logger.java.sql.Statement=debug
log4j.logger.java.sql.PreparedStatement=debug
log4j.logger.java.sql.ResultSet=debug
log4j.logger.org.tuckey.web.filters.urlrewrite.UrlRewriteFilter=debug

######################################################################################
# Console Appender  日志在控制输出配置
######################################################################################
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.Threshold=error
log4j.appender.CONSOLE.Target=System.out
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern= [%p] %d %c - %m%n


######################################################################################
# DailyRolling File  每天产生一个日志文件，文件名格式:log2009-09-11
######################################################################################
log4j.appender.file=org.apache.log4j.DailyRollingFileAppender
log4j.appender.file.DatePattern=yyyy-MM-dd
log4j.appender.file.File=log.log
log4j.appender.file.Append=true
log4j.appender.file.Threshold=error
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-M-d HH:mm:ss}%x[%5p](%F:%L) %m%n


log4j.logger.com.opensymphony.xwork2=error  

 

然后创建applicationContext.xm

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:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
     xsi:schemaLocation="http://www.springframework.org/schema/beans
                       http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
                       http://www.springframework.org/schema/tx
                       http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

  
  <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
     <property name="location" value="classpath:jdbc.properties"/>
  bean>

  
  <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
     <property name="driverClassName" value="${driver}"/>
     <property name="url" value="${url}"/>
     <property name="username" value="${username}"/>
     <property name="password" value="${password}"/>
  bean>

  
  <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
     <property name="dataSource" ref="dataSource"/>
     
     <property name="typeAliasesPackage" value="com.lwy.pojo"/>
     
     <property name="mapperLocations" value="classpath:mapper/*.xml"/>
  bean>

  
  <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
     
     <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
     
     <property name="basePackage" value="com.lwy.mapper"/>
  bean>

  
  <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
     
     <property name="dataSource" ref="dataSource"/>
  bean>
beans>

创建sping-mvc.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"
     xmlns:mvc="http://www.springframework.org/schema/mvc"
     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.xsd
      http://www.springframework.org/schema/mvc
      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

  
  <context:component-scan base-package="com.lwy"/>

  
  <mvc:annotation-driven/>

  
  <mvc:default-servlet-handler/>

  
  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
     <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
     <property name="prefix" value="/"/>
     <property name="suffix" value=".jsp"/>
  bean>
beans>

接着在webapp下WEB-INF配置web.xml

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
        version="3.1">

 <display-name>mvcDemodisplay-name>


 <welcome-file-list>
   <welcome-file>/pages/index.jspwelcome-file>
 welcome-file-list>
 
 <listener>
   <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
 listener>

 
 <context-param>
   <param-name>contextConfigLocationparam-name>
   <param-value>classpath:applicationContext.xmlparam-value>
 context-param>

 
 <filter>
   <filter-name>CharacterEncodingFilterfilter-name>
   <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
   <init-param>
     <param-name>encodingparam-name>
     <param-value>utf-8param-value>
   init-param>

   <init-param>
     <param-name>forceEncodingparam-name>
     <param-value>trueparam-value>
   init-param>
 filter>
 <filter-mapping>
   <filter-name>CharacterEncodingFilterfilter-name>
   <url-pattern>/*url-pattern>
 filter-mapping>

 
 <servlet>
   <servlet-name>springmvcservlet-name>
   <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
   
   <init-param>
     <param-name>contextConfigLocationparam-name>
     <param-value>classpath:spring-mvc.xmlparam-value>
   init-param>
   <load-on-startup>1load-on-startup>
   <async-supported>trueasync-supported>
 servlet>

 <servlet-mapping>
   <servlet-name>springmvcservlet-name>
   <url-pattern>*.dourl-pattern>
 servlet-mapping>

web-app>

数据库创建一个表

DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
  `id` varchar(200) NOT NULL,
  `name` varchar(200) CHARACTER SET utf8 NOT NULL,
  `pwd` varchar(200) CHARACTER SET utf8 NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

可以先添加数据方便测试

INSERT INTO `user` VALUES ('2', '22', '44');
INSERT INTO `user` VALUES ('5', '123', '123');
INSERT INTO `user` VALUES ('1', '123s', '123');

开始编写代码

pojo代码

package com.lwy.pojo;

public class User {
   private String id;

   public String getId() {
       return id;
   }

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

   private String name;
   private String pwd;

   public String getName() {
       return name;
   }

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

   public String getPwd() {
       return pwd;
   }

   public void setPwd(String pwd) {
       this.pwd = pwd;
   }
}

mapper

package com.lwy.mapper;

import com.lwy.pojo.User;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface UserMapper {
   User userlogin(@Param("name")String name, @Param("pwd") String pwd);
   int adduser(User user);
   int delteuser(String id);
   int updateuser(User user);
   User getById(String id);
   List getallUser();
}

xxMapper.xml

xml version="1.0" encoding="UTF-8"?>
DOCTYPE mapper SYSTEM "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.lwy.mapper.UserMapper">
   <resultMap id="ResultMap" type="User">
       <id property="userid" column="user_id">id>
       <result property="name" column="name">result>
       <result property="pwd" column="pwd">result>
   resultMap>
   <select id="userlogin" resultType="User">
     SELECT * FROM `user` WHERE `name`=#{name} AND pwd=#{pwd}
   select>

   <insert id="adduser" parameterType="User">
     INSERT INTO user(id,name,pwd) VALUES(#{id},#{name},#{pwd})
   insert>

   <delete id="delteuser" parameterType="String">
       delete from user where id=#{id}
   delete>
   <update id="updateuser" parameterType="User">
     UPDATE user SET NAME=#{name}, pwd=#{pwd} WHERE id=#{id}
   update>

   <select id="getById" parameterType="String" resultMap="ResultMap">
     SELECT * FROM user WHERE id=#{id}
   select>

   <select id="getallUser"  resultMap="ResultMap">
       SELECT * FROM user
   select>
mapper>

service层

package com.lwy.service;

import com.lwy.pojo.User;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface UserService {
   User userlogin(@Param("name") String name, @Param("pwd") String pwd);
   int adduser(User user);
   int delteuser(String id);
   int updateuser(User user);
   User getById(String id);
   List getallUser();
}

实现

package com.lwy.service.impl;

import com.lwy.pojo.User;
import com.lwy.mapper.UserMapper;
import com.lwy.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.UUID;

@Service
public class UserServiceImpl implements UserService {
   @Autowired
   UserMapper userMapper;
   @Override
   public int adduser(User user) {
       String id =  UUID.randomUUID().toString();
       user.setId(id);
       return userMapper.adduser(user);
   }

   @Override
   public int delteuser(String id) {
       return userMapper.delteuser(id);
   }

   @Override
   public int updateuser(User user) {
       return userMapper.updateuser(user);
   }

   @Override
   public User getById(String id) {
       return userMapper.getById(id);
   }

   @Override
   public List getallUser() {
       return userMapper.getallUser();
   }


   @Override
   public User userlogin(String name, String pwd) {

       return  userMapper.userlogin(name, pwd);
   }
}

controller层

package com.lwy.controller;

import com.lwy.pojo.User;
import com.lwy.service.UserService;
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 java.util.List;

@Controller
public class UserController {
   @Autowired
   UserService userService;

   @RequestMapping("/login.do")
   public String  login(String username, String password,Model model){
       System.out.println("开始登陆");
       userService.userlogin(username,password);
//        System.out.println("开始查询所有用户");
//        List userlist = userService.getallUser();
//        model.addAttribute("userlist",userlist);
       return "redirect:/getAllUser.do";
   }

   @RequestMapping("/addUser.do")
   public String addUser(User user){
       userService.adduser(user);
       return "redirect:/getAllUser.do";
   }

   @RequestMapping("/deleteUser.do")
   public String deleteUser(String id){
       userService.delteuser(id);
       return  "redirect:/getAllUser.do";
   }

   @RequestMapping("/updateUser.do")
   public String updateUser(User user){
       userService.updateuser(user);
       return "redirect:/getAllUser.do";
   }

   @RequestMapping("/getById.do")
   public String getUserById(String id,Model model){

       model.addAttribute("user",userService.getById(id));
       return "pages/user_update";
   }

   @RequestMapping("/getAllUser.do")
   public String getAllUser(Model model){
       System.out.println("开始查询所有用户");
       List userlist = userService.getallUser();
       model.addAttribute("userlist",userlist);
       return "pages/userlist";
   }

}

部署到tomcat中

如图

选择本地的tomcat 

页面

登陆

<%--
  Created by IntelliJ IDEA.
  User: hasee
  Date: 2019/6/3
  Time: 16:03
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>




    



    账号：
    密码：
    提交

显示

<%--
  Created by IntelliJ IDEA.
  User: hasee
  Date: 2019/6/3
  Time: 18:27
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>Titletitle>
head>
<body>
列表
<a href="/pages/user_add.jsp">添加a>
<a href="/pages/logout.do">退出a>
 <a href="/pages/admin.jsp">admin pagea>
<table>


    <tr>
        <td>idtd>
        <td>姓名td>
        <td>密码td>
        <td>操作td>

    tr>
    <c:forEach items="${requestScope.userlist}" var="list">
        <tr>
            <td>${list.id}td>
            <td>${list.name}td>
            <td>${list.pwd}td>
            <td>
                <a href="../getById.do?id=${list.id}">修改a>
                <a href="../deleteUser.do?id=${list.id}">删除a>
            td>

        tr>
    c:forEach>

table>
body>
html>

添加

<%--
  Created by IntelliJ IDEA.
  User: hasee
  Date: 2019/6/3
  Time: 20:18
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Titletitle>
head>
<body>
<form method="post" action="../addUser.do">
你的账号<input type="text" name="name">
你的密码<input type="text" name="pwd" />
    <button type="submit">保存button>
form>
body>
html>

修改

<%--
  Created by IntelliJ IDEA.
  User: hasee
  Date: 2019/6/3
  Time: 20:18
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>Titletitle>
head>
<body>
<form method="post" action="../updateUser.do">
    <input type="hidden" name="id" value="${requestScope.user.id}"/>
gfdshjsahsdhsdhsdhsd
    你的账号<input type="text" name="name" value="${requestScope.user.name}"/>
    你的密码<input type="text" name="pwd" value="${requestScope.user.pwd}"/>
    <button type="submit">修改button>
form>
body>
html>

 

转载于:https://www.cnblogs.com/l-wy/p/10991636.html