使用ssm+maven+bootstrap+mysql实现增删改查的一个小demo

其他 2019-07-04 21:41:10 阅读次数: 0

目录

一.运行效果

二，新建mavenProject

三，详细代码

web.xml

springmvc.xml

db.properties

applicationContext_mapper.xml

applicationContext_service.xml

applicationContext_transaction.xml

ItemInfo.java

ItemController.java

ItemMapper.java

ItemMapper.xml

ItemService.java

ItemServicelmpl.java

item_list.jsp

四，运行。右键项目-【run as】-【maven build...】

五，MySQL数据库文件

六，完整项目下载

此项目和这个项目都能实现同样的功能，但是这个项目是maven project，那个项目是dynamic web project

这里需要maven的基础：https://blog.csdn.net/qq_40323256/article/details/90168191

ssm的基础：https://blog.csdn.net/qq_40323256/article/details/89791744

bootstrap的基础：https://blog.csdn.net/qq_40323256/article/details/91490905

MySQL的基础：https://blog.csdn.net/qq_40323256/article/details/82905734

一.运行效果

先来看一下最终运行效果

二，新建mavenProject

注意：

1，选择war包。

2，通常新建的maven项目会报错，这是因为没有web.xml，解决此报错很简单，直接在项目上右键【Java EE Tools】-【generate deployment xxx】，然后就不报错了

先看下目录

三，详细代码

用maven的好处之一就是不用到处找jar包，想要什么jar包直接在pom.xml里面添加依赖就可以了。想要依赖可以去中央仓库找

我们可以把常用的依赖收集起来，以后可以直接复制pom.xml，省时省力

pom.xml

<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>4.0.0</modelVersion>
  <groupId>com.lijiang</groupId>
  <artifactId>ssm_spring_mvc_maven</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <name>ssm_spring_mvc_maven</name>
  <description>用maven做的ssm_spring_mvc项目</description>
  
  <properties>
  	<!-- lib version -->
  	<spring.version>5.0.8.RELEASE</spring.version>
  	<mybais.version>3.4.6</mybais.version>
  	<mybatis-spring.version>1.3.2</mybatis-spring.version>
  	<mysql-connector.version>5.1.46</mysql-connector.version>
  	<ojdbc7.version>12.1.0.2.0</ojdbc7.version>
  	<druid.version>1.0.16</druid.version>
  	<aopalliance.version>1.0</aopalliance.version>
  	<aspectj.weaver.version>1.6.4.RELEASE</aspectj.weaver.version>
  	<commons.logging.version>1.1.1</commons.logging.version>
  	<jstl.version>1.2</jstl.version>
  	<log4j.version>1.2.16</log4j.version>
  	<slf4j-api.version>1.6.1</slf4j-api.version>
  	<slf4j-nop.version>1.6.4</slf4j-nop.version>
  	<fileupload.version>1.3.1</fileupload.version>
  	<jackson.version>2.9.6</jackson.version>
  	<junit.version>4.9</junit.version>
  	<servlet-api.version>8.0.53</servlet-api.version>
  	<jsp-api.version>8.0.53</jsp-api.version>
  	
  	<c3p0.version>0.9.5.2</c3p0.version>
  	
  	<!-- plugins version -->
  	<maven-compiler-plugin.version>3.8.0</maven-compiler-plugin.version>
  	<tomcat7-maven-plugin.version>2.2</tomcat7-maven-plugin.version>
  </properties>
  
  <!-- 锁定版本， -->
  <dependencyManagement>
  	<dependencies>
  		 <!-- spring -->
		<dependency>
		    <groupId>org.springframework</groupId>
		    <artifactId>spring-core</artifactId>
		    <version>${spring.version}</version>
		</dependency>
	 	<dependency>
		   <groupId>org.springframework</groupId>
		   <artifactId>spring-web</artifactId>
		   <version>${spring.version}</version>
	    </dependency>
	    <dependency>
		   <groupId>org.springframework</groupId>
		   <artifactId>spring-tx</artifactId>
		   <version>${spring.version}</version>
	    </dependency>
	    <dependency>
		   <groupId>org.springframework</groupId>
		   <artifactId>spring-jdbc</artifactId>
		   <version>${spring.version}</version>
	    </dependency>
	    <dependency>
		   <groupId>org.springframework</groupId>
		   <artifactId>spring-webmvc</artifactId>
		   <version>${spring.version}</version>
	    </dependency>
	    <dependency>
		   <groupId>org.springframework</groupId>
		   <artifactId>spring-aop</artifactId>
		   <version>${spring.version}</version>
	    </dependency>
	    <dependency>
		   <groupId>org.springframework</groupId>
		   <artifactId>spring-context-support</artifactId>
		   <version>${spring.version}</version>
	    </dependency>
	    <dependency>
		   <groupId>org.springframework</groupId>
		   <artifactId>spring-test</artifactId>
		   <version>${spring.version}</version>
	    </dependency>
	    <!-- spring end -->
	    
	     <!-- mybais -->
		<dependency>
		    <groupId>org.mybatis</groupId>
		    <artifactId>mybatis</artifactId>
		    <version>${mybais.version}</version>
		</dependency>
		<!-- mybatis - spring 整合包-->
		<dependency>
		    <groupId>org.mybatis</groupId>
		    <artifactId>mybatis-spring</artifactId>
		    <version>${mybatis-spring.version}</version>
		</dependency>
		
		<!-- json -->
		<dependency>
		    <groupId>com.fasterxml.jackson.core</groupId>
		    <artifactId>jackson-core</artifactId>
		    <version>${jackson.version}</version>
		</dependency>
		<dependency>
		    <groupId>com.fasterxml.jackson.core</groupId>
		    <artifactId>jackson-annotations</artifactId>
		    <version>${jackson.version}</version>
		</dependency>
		<dependency>
		    <groupId>com.fasterxml.jackson.core</groupId>
		    <artifactId>jackson-databind</artifactId>
		    <version>${jackson.version}</version>
		</dependency>
		<!-- json end -->
		
<!-- 		c3p0 -->
		<dependency>
		    <groupId>com.mchange</groupId>
		    <artifactId>c3p0</artifactId>
		    <version>${c3p0.version}</version>
		</dependency>
  	</dependencies>
  
  </dependencyManagement>
  
  <dependencies>
    <!-- spring -->
	<dependency>
	    <groupId>org.springframework</groupId>
	    <artifactId>spring-core</artifactId>
	</dependency>
 	<dependency>
	   <groupId>org.springframework</groupId>
	   <artifactId>spring-web</artifactId>
    </dependency>
    <dependency>
	   <groupId>org.springframework</groupId>
	   <artifactId>spring-tx</artifactId>
    </dependency>
    <dependency>
	   <groupId>org.springframework</groupId>
	   <artifactId>spring-jdbc</artifactId>
    </dependency>
    <dependency>
	   <groupId>org.springframework</groupId>
	   <artifactId>spring-webmvc</artifactId>
    </dependency>
    <dependency>
	   <groupId>org.springframework</groupId>
	   <artifactId>spring-aop</artifactId>
    </dependency>
    <dependency>
	   <groupId>org.springframework</groupId>
	   <artifactId>spring-context-support</artifactId>
    </dependency>
    <dependency>
	   <groupId>org.springframework</groupId>
	   <artifactId>spring-test</artifactId>
    </dependency>
    <!-- spring end -->
        
    <!-- mybais -->
	<dependency>
	    <groupId>org.mybatis</groupId>
	    <artifactId>mybatis</artifactId>
	</dependency>
	
	<!-- mybatis - spring 整合包-->
	<dependency>
	    <groupId>org.mybatis</groupId>
	    <artifactId>mybatis-spring</artifactId>
	</dependency>
 
	<!-- mysql -->
	<dependency>
	    <groupId>mysql</groupId>
	    <artifactId>mysql-connector-java</artifactId>
	    <version>${mysql-connector.version}</version>
	</dependency>
 
	<dependency>
	    <groupId>cn.easyproject</groupId>
	    <artifactId>ojdbc7</artifactId>
	    <version>${ojdbc7.version}</version>
	</dependency>
	<!-- mysql end -->
	
	 <!-- 阿里巴巴的数据库连接池 -->
	<dependency>
	    <groupId>com.alibaba</groupId>
	    <artifactId>druid</artifactId>
	    <version>${druid.version}</version>
	</dependency>
	
	<!-- aop -->
	<dependency>
	    <groupId>aopalliance</groupId>
	    <artifactId>aopalliance</artifactId>
	    <version>${aopalliance.version}</version>
	</dependency>
	
	<dependency>
	    <groupId>org.aspectj</groupId>
	    <artifactId>com.springsource.org.aspectj.weaver</artifactId>
	    <version>${aspectj.weaver.version}</version>
	</dependency>
	<!-- aop end -->
	
	<!-- logging -->
	<dependency>
	    <groupId>org.apache.commons</groupId>
	    <artifactId>com.springsource.org.apache.commons.logging</artifactId>
	    <version>${commons.logging.version}</version>
	</dependency>
 
	<!-- jsp标准标签库 -->
	<dependency>
		<groupId>javax.servlet</groupId>
		<artifactId>jstl</artifactId>
		<version>${jstl.version}</version>
	</dependency>
	
	<!-- log -->
	<dependency>
		<groupId>log4j</groupId>
		<artifactId>log4j</artifactId>
		<version>${log4j.version}</version>
	</dependency>
	<dependency>
		<groupId>org.slf4j</groupId>
		<artifactId>slf4j-api</artifactId>
		<version>${slf4j-api.version}</version>
	</dependency>
	<dependency>
		<groupId>org.slf4j</groupId>
		<artifactId>slf4j-nop</artifactId>
		<version>${slf4j-nop.version}</version>
	</dependency>
	<!-- log end -->
 
	<!--文件上传-->
	<dependency>  
		<groupId>commons-fileupload</groupId>  
		<artifactId>commons-fileupload</artifactId>  
		<version>${fileupload.version}</version>  
	</dependency>
	
	<!-- json -->
	<dependency>
	    <groupId>com.fasterxml.jackson.core</groupId>
	    <artifactId>jackson-core</artifactId>
	</dependency>
	<dependency>
	    <groupId>com.fasterxml.jackson.core</groupId>
	    <artifactId>jackson-annotations</artifactId>
	</dependency>
	<dependency>
	    <groupId>com.fasterxml.jackson.core</groupId>
	    <artifactId>jackson-databind</artifactId>
	</dependency>
	<!-- json end -->
	
	<!-- junit单元测试 -->
	<dependency>
	    <groupId>junit</groupId>
	    <artifactId>junit</artifactId>
	    <version>${junit.version}</version>
	    <scope>test</scope>
	</dependency>
	
	<!-- servlet-api 8.5.32 -->
	<dependency>
  		<groupId>org.apache.tomcat</groupId>
  		<artifactId>tomcat-servlet-api</artifactId>
  		<version>${servlet-api.version}</version>
  		<scope>provided</scope>
  	</dependency>
	<!-- jsp-api 8.5.32 -->
	<dependency>
	    <groupId>org.apache.tomcat</groupId>
	    <artifactId>tomcat-jsp-api</artifactId>
	    <version>${jsp-api.version}</version>
	    <scope>provided</scope>
	</dependency>
	
	<!-- 		c3p0 -->
		<dependency>
		    <groupId>com.mchange</groupId>
		    <artifactId>c3p0</artifactId>
		    <version>${c3p0.version}</version>
		</dependency>
	
  </dependencies>
  
  <build>
  	<plugins>
  		<plugin>
  			<groupId>org.apache.maven.plugins</groupId>
  			<artifactId>maven-compiler-plugin</artifactId>
  			<version>${maven-compiler-plugin.version}</version>
  			<configuration>
  				<source>1.8</source>
				<target>1.8</target>  			
  			</configuration>
  		</plugin>
  		
  		<plugin>
  			<groupId>org.apache.tomcat.maven</groupId>
  			<artifactId>tomcat7-maven-plugin</artifactId>
  			<version>${tomcat7-maven-plugin.version}</version>
  			<configuration>
  				<uriEncoding>UTF-8</uriEncoding>
  				<url>http://localhost:8080/manager/text</url>
  				<username>lijiang</username>
  				<password>111</password>
  			</configuration>
  		</plugin>
  		
  	</plugins>
  	
  	<!-- 配置文件放行 -->
    <resources>
		<resource>
			<directory>src/main/java</directory>
			<includes>
				<include>**/*.properties</include>
				<include>**/*.xml</include>
			</includes>
			<filtering>false</filtering>
		</resource>
		<!-- 放行main/resources下的配置文件 如果不放行spring mybatis等配置文件不会被打到包里从而导致错误 -->
		<resource>
			<directory>src/main/resources</directory>
			<includes>
				<include>**/*.properties</include>
				<include>**/*.xml</include>
			</includes>
			<filtering>false</filtering>
		</resource>
	</resources>
  </build>
  
</project>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
  <display-name>ssm_spring_mvc_maven</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  
  
     <!-- 静态资源放行 -->
  <servlet-mapping>
  	<servlet-name>default</servlet-name>
  	<url-pattern>*.css</url-pattern>
  	<url-pattern>*.ttf</url-pattern>
  	<url-pattern>*.woff</url-pattern>
  	<url-pattern>*.js</url-pattern>
  	<url-pattern>*.png</url-pattern>
  	<url-pattern>*.jpg</url-pattern>
  	<url-pattern>*.gif</url-pattern>
  </servlet-mapping>
  
  
    <!-- 过滤器  解决表单post提交乱码问题 -->
  <filter>
  	<filter-name>encoding</filter-name>
  	<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  	<init-param>
  		<param-name>encoding</param-name>
  		<param-value>utf-8</param-value>
  	</init-param>
  </filter>
  <filter-mapping>
  	<filter-name>encoding</filter-name>
  	<!-- 拦截全部 /* -->
  	<url-pattern>/*</url-pattern>
  </filter-mapping>
  
  
  
    <!-- 配置springmvc前端控制器 和读取配置文件 -->
  <servlet>
  	<servlet-name>springmvc</servlet-name>
  	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  	<init-param>
  		<!-- 读取配置文件 -->
  		<param-name>contextConfigLocation</param-name>
  		<param-value>classpath:springmvc.xml</param-value>
  	</init-param>
  </servlet>
  <servlet-mapping>
  	<servlet-name>springmvc</servlet-name>
  	<!-- / -->
  	<url-pattern>/</url-pattern>
  </servlet-mapping>
  
  
  <!--   监听器 加载spring的配置文件 -->
  <listener>
  	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
  	<param-name>contextConfigLocation</param-name>
  	<param-value>classpath:applicationContext_*.xml</param-value>
  </context-param>
</web-app>

springmvc.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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
		
		
		<!-- 开启注解扫描 -->
		<context:component-scan base-package="com.lijiang.controller"/>
		
		<!-- 开启注解驱动 -->
		<mvc:annotation-driven/>
		
		<!-- 配置视图解析器 -->
		<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
			<property name="prefix" value="/WEB-INF/jsp/"/>
			<property name="suffix" value=".jsp"/>
		</bean>
		
		<!-- 图片上传 -->
		<bean name="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>
</beans>

db.properties

jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.jdbcUrl=jdbc:mysql://localhost:3306/ssm
jdbc.username=root
jdbc.password=root

applicationContext_mapper.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"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
		
				<!-- 读取配置文件 数据库 -->
		<context:property-placeholder location="classpath:db.properties" ignore-unresolvable="true"/>
		
		<!-- 配置数据源 -->
		<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
			<property name="driverClass" value="${jdbc.driverClass}"/>
			<property name="jdbcUrl" value="${jdbc.jdbcUrl}"/>
			<property name="user" value="${jdbc.username}"/>
			<property name="password" value="${jdbc.password}"/>
		</bean>
		
		<!-- 配置mybatis -->
		<bean name="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
			<property name="dataSource" ref="dataSource"/>
			<property name="typeAliasesPackage" value="com.lijiang.bean"/>
		</bean>
		
		<!-- mapper工厂 -->
		<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
			<property name="basePackage" value="com.lijiang.mapper"/>
		</bean>
</beans>

applicationContext_service.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"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
		<!-- 开启注解扫描 -->
		<context:component-scan base-package="com.lijiang.service"/>
</beans>

applicationContext_transaction.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:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-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/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
				<!-- 事务核心管理器 -->
		<bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
			<property name="dataSource" ref="dataSource"/>
		</bean>
		
		<!-- 开启注解事务 -->		
		<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

ItemInfo.java

package com.lijiang.bean;

public class ItemInfo {

	//id
	private Integer id;
	//username
	private String username;
	private String password;
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}

	public ItemInfo(Integer id, String username, String password) {
		super();
		this.id = id;
		this.username = username;
		this.password = password;
	}

	
	
}

ItemController.java

package com.lijiang.controller;

import java.util.ArrayList;
import java.util.List;

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.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import com.lijiang.bean.ItemInfo;
import com.lijiang.service.ItemService;

@Controller
@RequestMapping("/admin/items")
public class ItemController {

	@Autowired
	private ItemService itemService;
	
//	显示所有列表
	@RequestMapping("allList.do")
	public String selectAll(Model model,ItemInfo itemInfo){
		List<ItemInfo> itemList=itemService.selectAll(itemInfo);

		model.addAttribute("itemList", itemList);
		return "item_list";
	}
	
//	删除
	@RequestMapping("delete.do")
	public String delete(Integer id){
		itemService.deleteById(id);
		return "forward:allList.do";
	}
	
//	添加
	@RequestMapping("save.do")
	public String save(ItemInfo itemInfo){
		itemService.saveItem(itemInfo);
		return "forward:allList.do";
	}
	
//	修改
	@RequestMapping("update.do")
    public String update(ItemInfo itemInfo){
    	itemService.updateItem(itemInfo);
    	return "forward:allList.do";
    }
	
//	编辑 回显数据
	@RequestMapping("edit.do")
	@ResponseBody
	public ItemInfo edit(Integer id) {
		return itemService.selectItemInfoById(id);
	}

}

ItemMapper.java

package com.lijiang.mapper;

import java.util.List;

import com.lijiang.bean.ItemInfo;

public interface ItemMapper {

	List<ItemInfo> selectAll(ItemInfo itemInfo);

	void deleteById(Integer id);

	void saveItem(ItemInfo itemInfo);

	void updateItem(ItemInfo itemInfo);

	ItemInfo selectItemInfoById(Integer id);

}

ItemMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper    
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"    
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.lijiang.mapper.ItemMapper">

<!-- 	List<ItemInfo> selectAll(ItemInfo itemInfo); -->
  <select id="selectAll" resultType="ItemInfo" parameterType="ItemInfo">
  	select * from user
  	<where>
			<if test="username != null and username != ''">
				and username LIKE "%"#{username}"%"
			</if>
	</where>
  </select>
<!--   void deleteById(Integer id); -->
  <delete id="deleteById" parameterType="Integer">
   delete from user where id=#{id}
  </delete>
<!--   void saveItem(ItemInfo itemInfo); -->
   <insert id="saveItem" parameterType="ItemInfo">
   insert into user values(#{id},#{username}, #{password});
   </insert>
<!-- void updateItem(ItemInfo itemInfo); -->
   <update id="updateItem" parameterType="ItemInfo">
   	update user
  		<set>
  			<if test="username != null and username != ''">username = #{username},</if>
  			<if test="password != null and password != ''">password = #{password}</if>
  		</set>
  		where id = #{id}
   </update>
<!--    ItemInfo selectItemInfoById(Integer id); -->
	<select id="selectItemInfoById" parameterType="Integer" resultType="ItemInfo">
		select * from user where id=#{id}
	</select>
</mapper>

ItemService.java

package com.lijiang.service;

import java.util.List;

import com.lijiang.bean.ItemInfo;

public interface ItemService {

	List<ItemInfo> selectAll(ItemInfo itemInfo);

	void deleteById(Integer id);

	void saveItem(ItemInfo itemInfo);

	void updateItem(ItemInfo itemInfo);

	ItemInfo selectItemInfoById(Integer id);

}

ItemServicelmpl.java

package com.lijiang.service;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.lijiang.bean.ItemInfo;
import com.lijiang.mapper.ItemMapper;

@Service
public class ItemServicelmpl implements ItemService {

	@Autowired
	private ItemMapper itemMapper;

	public List<ItemInfo> selectAll(ItemInfo itemInfo) {
		return itemMapper.selectAll(itemInfo);
	}

	public void deleteById(Integer id) {
		itemMapper.deleteById(id);
	}

	public void saveItem(ItemInfo itemInfo) {
		itemMapper.saveItem(itemInfo);
	}

	public void updateItem(ItemInfo itemInfo) {
		itemMapper.updateItem(itemInfo);
	}

	public ItemInfo selectItemInfoById(Integer id) {
		return itemMapper.selectItemInfoById(id);
	}

}

item_list.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>

<link href="${pageContext.request.contextPath }/css/bootstrap.min.css"  rel="stylesheet">
<script src="${pageContext.request.contextPath }/js/jquery-3.3.1.min.js"></script>
<script src="${pageContext.request.contextPath }/js/bootstrap.min.js"></script>

</head>
<body>


            
		<table  class="table table-hover table table-striped" id="myTable">
				<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#addLayer">
				     <span class="glyphicon glyphicon-plus"></span>添加记录
				</button>
				
				<!-- 			查询记录  -->
					 <form id="search_form" action="${pageContext.request.contextPath }/admin/items/allList.do" method="post">
			           <div class="row">
			                 <div class="col-md-2">
			                       <input type="text" id="search_item_name" class="form-control input-sm" placeholder="输入用户名" name="username" value="">
			                 </div>                
			                 <div class="col-md-9">
			                    
			                    <button id="search_btn" type="submit" class="btn btn-primary"><span class="glyphicon glyphicon-search"></span> 查询</button>&nbsp;&nbsp;
			                 </div>
			            </div> 
		             </form>
		             
				<thead>
					    <th>id</th>
						<th>username</th>
						<th>password</th>
				</thead>
				<tbody>
					<c:forEach items="${itemList}" var="item">
						 <tr>
						    <td>${item.id}</td>
						    <td>${item.username}</td>
						    <td>${item.password}</td>
						    <td>
						    	<button class="btn btn-success btn-xs"  data-toggle="modal" data-target="#editLayer" onclick="editItems(${item.id})"> <span class="glyphicon glyphicon-pencil"></span>修改</button>
						    	<button class="btn btn-danger btn-xs" onclick="deleteItem(${item.id})"><span class="glyphicon glyphicon-remove"></span>删除</button>
						    	
						    </td>
		
						</tr>
						
					</c:forEach>
		
				</tbody>
				
	</table>

<!-- 			记录添加弹出层 -->
			<div class="modal fade" id="addLayer" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
			<div class="modal-dialog">
			        <div class="modal-content">
			          <div class="modal-header">
			          
			            <button data-dismiss="modal" class="close" type="button"><span aria-hidden="true">×</span><span class="sr-only">Close</span></button>
			            <h4 class="modal-title">添加记录</h4>
			            
			          </div>
			            <div class="modal-body">
				            <form id="add_items_form" class="form-horizontal">
				                <input type="hidden" class="form-control" name="id"> <br>
								<input type="text" class="form-control" placeholder="用户名" name="username"> <br>
	                            <input type="password" class="form-control" placeholder="密码" name="password">
	                        </form>
				        </div>
			          
			          
			          <div class="modal-footer">
			            <button data-dismiss="modal" class="btn btn-default" type="button">关闭</button>
			            <button class="btn btn-primary" type="button" onclick="addItem()">确认添加</button>
			          </div>
			          
			        </div>
			      </div>
			</div>
			 <!-- <div style="height:200px"></div> -->
			            
             
  <!-- 			记录修改弹出层 -->
			<div class="modal fade" id="editLayer" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
			<div class="modal-dialog">
			        <div class="modal-content">
			          <div class="modal-header">
			          
			            <button data-dismiss="modal" class="close" type="button"><span aria-hidden="true">×</span><span class="sr-only">Close</span></button>
			            <h4 class="modal-title">修改记录</h4>
			            
			          </div>
			            <div class="modal-body">
				            <form id="edit_items_form" class="form-horizontal">
				                <input type="hidden" id="edit_item_id" class="form-control" name="id"> <br>
								<input type="text" id="edit_item_username" class="form-control" placeholder="用户名" name="username"> <br>
	                            <input type="password" id="edit_item_password" class="form-control" placeholder="密码" name="password">
	                        </form>
				        </div>
			          
			          
			          <div class="modal-footer">
			            <button data-dismiss="modal" class="btn btn-default" type="button">关闭</button>
			            <button class="btn btn-primary" type="button" onclick="updateItem()">确认修改</button>
			          </div>
			          
			        </div>
			      </div>
			</div>
			 <!-- <div style="height:200px"></div> -->


			
	
	
</body>
<script type="text/javascript">
  $(function(){
	  init();
  })
  function init(){
// 	  alert("初始化界面...");
  }
  
//   删除
  function deleteItem(id){
	 if(confirm("确定要删除该记录吗？")){
		 $.post(
					"${pageContext.request.contextPath }/admin/items/delete.do",
					{"id":id},
					function(){
						alert("删除成功！");
						window.location.reload();
					}
				);
	 }
  }
  
	//添加记录
	function addItem(){
		$.ajax({
			type:"POST",
			data:new FormData($("#add_items_form")[0]),
			url:"${pageContext.request.contextPath }/admin/items/save.do",
			
			cache:false,
			contentType:false,
			processData:false,
			success:function(){
				alert("记录添加成功!");
				window.location.reload();
			}
		});
	}
	
// 	“确认修改”按钮的点击事件
	function updateItem(){
		$.ajax({
			type:"POST",
			data:new FormData($("#edit_items_form")[0]),
			url:"${pageContext.request.contextPath }/admin/items/update.do",
			
			cache:false,
			contentType:false,
			processData:false,
			success:function(){
				alert("修改成功!");
				window.location.reload();
			}
		});
	}
	
	//点击“修改”按钮，打开编辑窗口，回显数据
	function editItems(id){
		$("#edit_items_form")[0].reset();
		$.ajax({
			type:"POST",
			data:{"id":id},
			url:"${pageContext.request.contextPath }/admin/items/edit.do",
			
			dataType:"json",
			success:function(data){
				$("#edit_item_id").val(data.id);
				$("#edit_item_username").val(data.username);
				$("#edit_item_password").val(data.password);

			}
		});
	}
	
	
</script>
</html>

四，运行。右键项目-【run as】-【maven build...】

右键项目-【run as】-【maven build...】，在Goals中输入：clean tomcat7:run，如果不能运行，就用：tomcat7:run

第一次运行maven项目时输入clean tomcat7:run，后面就用  clean tomcat7:redeploy 

五，MySQL数据库文件

六，完整项目下载

CSDN下载：https://download.csdn.net/download/qq_40323256/11242993

GitHub下载：https://github.com/LiJiangJiangJiang/ssm_spring_mvc_maven

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