IDEA搭建SSM实现登录、注册，数据增删改查功能

2022-06-11 00:46:25

 本博文的源代码：百度云盘/java/java实例/SSM实例/SSM实现登录注册，增删改查/IDEA搭建SSM实现登录，注册，增删改查功能.zip

搭建空的Maven项目

使用Intellij idea 搭建基本的maven空项目 new->project

IDEA搭建SSM实现登录、注册，数据增删改查功能

最后Finish，Maven项目搭建完成

IDEA搭建SSM实现登录、注册，数据增删改查功能

构建项目基本骨架
1，在java下新建com
2，在com下新建springmvc
3，在springmvc下新建controller、dao、mapping、pojo、service
如下图：

IDEA搭建SSM实现登录、注册，数据增删改查功能

目录解释如下
controller：http（GET和POST等）请求的入口，调用Service，想客户端返回数据

dao：接口，定义了数据表映射成的对象，具有的操作

mapping：具体是sql语句，以xml格式存在，即mybatis的语法文件

service：controller调用的服务，service调用dao里面定义的数据库行为方法，来执行对应mapping里的mybatis，从而完成与数据库完整的交互。

修改pom文件
配置你的maven

IDEA搭建SSM实现登录、注册，数据增删改查功能

在pom.xml文件中添加如下内容：

<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/maven-v4_0_0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <groupId>com</groupId>

  <artifactId>ssm</artifactId>

  <packaging>war</packaging>

  <version>1.0-SNAPSHOT</version>

  <name>Maven Webapp</name>

  <url>http://maven.apache.org</url>

  <properties>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

<!-- spring版本号 -->

<spring.version>4.1.4.RELEASE</spring.version>

<!-- mybatis版本号 -->

<mybatis.version>3.2.8</mybatis.version>

<!-- log4j日志文件管理包版本 -->

<slf4j.version>1.7.7</slf4j.version>

<log4j.version>1.2.17</log4j.version>

<!-- jackson包版本 -->

<jackson.version>2.5.0</jackson.version>

  </properties>

  <dependencies>

<dependency>

  <groupId>junit</groupId>

  <artifactId>junit</artifactId>

  <version>3.8.1</version>

  <scope>test</scope>

</dependency>

<!-- mybatis核心包 -->

<dependency>

  <groupId>org.mybatis</groupId>

  <artifactId>mybatis</artifactId>

  <version>${mybatis.version}</version>

</dependency>

<!-- mybatis/spring包 -->

<dependency>

  <groupId>org.mybatis</groupId>

  <artifactId>mybatis-spring</artifactId>

  <version>1.2.2</version>

</dependency>

<!--spring单元测试依赖 -->

<dependency>

  <groupId>org.springframework</groupId>

  <artifactId>spring-test</artifactId>

  <version>${spring.version}</version>

  <scope>test</scope>

</dependency>

<!-- springMVC核心包 -->

<dependency>

  <groupId>org.springframework</groupId>

  <artifactId>spring-webmvc</artifactId>

  <version>${spring.version}</version>

</dependency>

<!-- spring核心包 -->

<dependency>

  <groupId>org.springframework</groupId>

  <artifactId>spring-core</artifactId>

  <version>${spring.version}</version>

</dependency>

<dependency>

  <groupId>org.springframework</groupId>

  <artifactId>spring-beans</artifactId>

  <version>${spring.version}</version>

</dependency>

<dependency>

  <groupId>org.springframework</groupId>

  <artifactId>spring-context</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-tx</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-jdbc</artifactId>

  <version>${spring.version}</version>

</dependency>

<dependency>

  <groupId>javax.servlet</groupId>

  <artifactId>javax.servlet-api</artifactId>

  <version>3.0.1</version>

  <scope>provided</scope>

</dependency>

<dependency>

  <groupId>javax.servlet.jsp</groupId>

  <artifactId>jsp-api</artifactId>

  <version>2.2</version>

  <scope>provided</scope>

</dependency>

<!-- 导入Mysql数据库链接jar包 -->

<dependency>

  <groupId>mysql</groupId>

  <artifactId>mysql-connector-java</artifactId>

  <version>5.1.30</version>

</dependency>

<!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->

<dependency>

  <groupId>commons-dbcp</groupId>

  <artifactId>commons-dbcp</artifactId>

  <version>1.2.2</version>

</dependency>

<!-- JSTL标签类 -->

<dependency>

  <groupId>jstl</groupId>

  <artifactId>jstl</artifactId>

  <version>1.2</version>

</dependency>

<!-- 日志文件管理包 -->

<!-- log start -->

<dependency>

  <groupId>log4j</groupId>

  <artifactId>log4j</artifactId>

  <version>${log4j.version}</version>

</dependency>

<!-- 格式化对象，方便输出日志 -->

<dependency>

  <groupId>com.alibaba</groupId>

  <artifactId>fastjson</artifactId>

  <version>1.1.41</version>

</dependency>

<dependency>

  <groupId>org.slf4j</groupId>

  <artifactId>slf4j-api</artifactId>

  <version>${slf4j.version}</version>

</dependency>

<dependency>

  <groupId>org.slf4j</groupId>

  <artifactId>slf4j-log4j12</artifactId>

  <version>${slf4j.version}</version>

</dependency>

<!-- log end -->

<!-- 映入JSON -->

<dependency>

  <groupId>org.codehaus.jackson</groupId>

  <artifactId>jackson-mapper-asl</artifactId>

  <version>1.9.13</version>

</dependency>

<dependency>

  <groupId>com.fasterxml.jackson.core</groupId>

  <artifactId>jackson-databind</artifactId>

  <version>2.1.0</version>

</dependency>

<dependency>

  <groupId>com.fasterxml.jackson.core</groupId>

  <artifactId>jackson-annotations</artifactId>

  <version>2.1.0</version>

</dependency>

<!-- 上传组件包 -->

<dependency>

  <groupId>commons-fileupload</groupId>

  <artifactId>commons-fileupload</artifactId>

  <version>1.3.1</version>

</dependency>

<dependency>

  <groupId>commons-io</groupId>

  <artifactId>commons-io</artifactId>

  <version>2.4</version>

</dependency>

<dependency>

  <groupId>commons-codec</groupId>

  <artifactId>commons-codec</artifactId>

  <version>1.9</version>

</dependency>

<dependency>

  <groupId>junit</groupId>

  <artifactId>junit</artifactId>

  <version>4.11</version>

  <!-- 表示开发的时候引入，发布的时候不会加载此包 -->

  <scope>test</scope>

</dependency>

<!--Spring test相关依赖-->

<dependency>

  <groupId>org.springframework</groupId>

  <artifactId>spring-test</artifactId>

  <version>4.1.7.RELEASE</version>

</dependency>

<dependency>

  <groupId>junit</groupId>

  <artifactId>junit</artifactId>

  <version>RELEASE</version>

</dependency>

<dependency>

  <groupId>org.jsoup</groupId>

  <artifactId>jsoup</artifactId>

  <version>1.8.1</version>

</dependency>

<dependency>

  <groupId>net.sourceforge.htmlunit</groupId>

  <artifactId>htmlunit</artifactId>

  <version>2.15</version>

</dependency>

<dependency>

  <groupId>org.seleniumhq.selenium</groupId>

  <artifactId>selenium-java</artifactId>

  <version>2.33.0</version>

</dependency>

<dependency>

  <groupId>us.codecraft</groupId>

  <artifactId>webmagic-core</artifactId>

  <version>0.6.1</version>

</dependency>

<dependency>

  <groupId>us.codecraft</groupId>

  <artifactId>webmagic-extension</artifactId>

  <version>0.6.1</version>

</dependency>

  </dependencies>

  <build>

<finalName>com</finalName>

  <resources>

<resource>

  <directory>src/main/java</directory>

  <includes>

    <include>**/*.xml</include>

  </includes>

  <filtering>true</filtering>

</resource>

  </resources>

  </build>

</project>

编写ssm配置文件

在resources下新建个配置文件jdbc.properties，内容如下：

driver=com.mysql.jdbc.Driver

url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8

username=root

password=root

定义初始连接数

initialSize=0

定义最大连接数

maxActive=20

定义最大空闲

maxIdle=20

定义最小空闲

minIdle=1

定义最长等待时间

maxWait=60000

请确保你的mysql服务是开启的，且存在数据库test

在resources下新建个配置文件spring-mvc.xml，内容如下：

<?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:p="http://www.springframework.org/schema/p"

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-3.1.xsd

                    http://www.springframework.org/schema/context

                    http://www.springframework.org/schema/context/spring-context-3.1.xsd

                    http://www.springframework.org/schema/mvc

                    http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

<!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 -->

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

<!--避免IE执行AJAX时，返回JSON出现下载文件 -->

<bean id="mappingJacksonHttpMessageConverter"

    class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">

    <property name="supportedMediaTypes">

        <list>

            <value>text/html;charset=UTF-8</value>

        </list>

    </property>

</bean>

<!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 -->

<bean

    class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">

    <property name="messageConverters">

        <list>

            <ref bean="mappingJacksonHttpMessageConverter" />   <!-- JSON转换器 -->

        </list>

    </property>

</bean>

<!-- 定义跳转的文件的前后缀 ，视图模式配置-->

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

    <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址 -->

    <property name="prefix" value="/" />

    <property name="suffix" value=".jsp" />

</bean>

<!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->

<bean id="multipartResolver"

    class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

    <!-- 默认编码 -->

    <property name="defaultEncoding" value="utf-8" />

    <!-- 文件大小最大值 -->

    <property name="maxUploadSize" value="10485760000" />

    <!-- 内存中的最大值 -->

    <property name="maxInMemorySize" value="40960" />

</bean> 

</beans>

mybatis-config.xml配置：

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

<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>

<!--配置全局属性-->

<settings>

    <setting name="logImpl" value="LOG4J" />

    <setting name="cacheEnabled" value="true"/>

</settings>

</configuration>

spring-mybatis配置：

<?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:p="http://www.springframework.org/schema/p"

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-3.1.xsd

                    http://www.springframework.org/schema/context

                    http://www.springframework.org/schema/context/spring-context-3.1.xsd

                    http://www.springframework.org/schema/mvc

                    http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

<!-- 自动扫描 -->

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

<!-- 引入配置文件 -->

<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"

    destroy-method="close">

    <property name="driverClassName" value="${driver}" />

    <property name="url" value="${url}" />

    <property name="username" value="${username}" />

    <property name="password" value="${password}" />

    <!-- 初始化连接大小 -->

    <property name="initialSize" value="${initialSize}"></property>

    <!-- 连接池最大数量 -->

    <property name="maxActive" value="${maxActive}"></property>

    <!-- 连接池最大空闲 -->

    <property name="maxIdle" value="${maxIdle}"></property>

    <!-- 连接池最小空闲 -->

    <property name="minIdle" value="${minIdle}"></property>

    <!-- 获取连接最大等待时间 -->

    <property name="maxWait" value="${maxWait}"></property>

</bean>

<!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

    <property name="dataSource" ref="dataSource" />

    <property name="configLocation" value="classpath:/mybatis-config.xml"></property>

    <!-- 自动扫描mapping.xml文件 -->

    <property name="mapperLocations" value="classpath:com/springmvc/mapping/*.xml"></property>

</bean>

<!-- DAO接口所在包名，Spring会自动查找其下的类 -->

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

    <property name="basePackage" value="com.springmvc.dao" />

    <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>

</bean>

<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->

<bean id="transactionManager"

    class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

    <property name="dataSource" ref="dataSource" />

</bean>

log4j.xml

日志模块的配置：

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

<!DOCTYPE log4j:configuration SYSTEM "http://toolkit.alibaba-inc.com/dtd/log4j/log4j.dtd">

<log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'

                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

                 xsi:schemaLocation="http://jakarta.apache.org/log4j/ ">

<appender name="consoleAppender" class="org.apache.log4j.ConsoleAppender">

    <layout class="org.apache.log4j.PatternLayout">

        <param name="ConversionPattern" value="[%d{yyyy-MM-dd HH:mm:ss.SSS}]-[%c]-[%t] %x - %m%n"/>

    </layout>

</appender>

<!-- Mybatis and SQL -->

<logger name="org.apache.ibatis" additivity="true">

    <level value="DEBUG"/>

    <appender-ref ref="consoleAppender"/>

</logger>

<logger name="org.mybatis.spring" additivity="true">

    <level value="ERROR"/>

    <appender-ref ref="consoleAppender"/>

</logger>

<logger name="java.sql" additivity="true">

    <level value="DEBUG"/>

    <appender-ref ref="consoleAppender"/>

</logger>

<logger name="java.sql.Connection" additivity="true">

    <level value="DEBUG"/>

    <appender-ref ref="consoleAppender"/>

</logger>

<logger name="java.sql.Statement" additivity="true">

    <level value="DEBUG"/>

    <appender-ref ref="consoleAppender"/>

</logger>

<logger name="java.sql.PreparedStatement" additivity="true">

    <level value="DEBUG"/>

    <appender-ref ref="consoleAppender"/>

</logger>

<!-- Spring -->

<logger name="org.springframework" additivity="true">

    <level value="ERROR"/>

    <appender-ref ref="consoleAppender"/>

</logger>

<!-- ActiveMQ -->

<logger name="org.apache.activemq" additivity="true">

    <level value="ERROR"/>

    <appender-ref ref="consoleAppender"/>

</logger>

<!-- ===================================================================== -->

<!--  根日志记录器                                                          -->

<!-- ===================================================================== -->

<root>

    <level value="DEBUG"/>

    <appender-ref ref="consoleAppender"/>

</root>

</log4j:configuration>

log4j.properties

定义LOG输出级别

log4j.rootLogger=INFO,Console,File

定义日志输出目的地为控制台

log4j.appender.Console=org.apache.log4j.ConsoleAppender

log4j.appender.Console.Target=System.out

可以灵活地指定日志输出格式，下面一行是指定具体的格式

log4j.appender.Console.layout = org.apache.log4j.PatternLayout

log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n

文件大小到达指定尺寸的时候产生一个新的文件

log4j.appender.File = org.apache.log4j.RollingFileAppender

指定输出目录

log4j.appender.File.File = logs/ssm.log

定义文件最大大小

log4j.appender.File.MaxFileSize = 10MB

 输出所以日志，如果换成DEBUG表示输出DEBUG以上级别日志

log4j.appender.File.Threshold = ALL

log4j.appender.File.layout = org.apache.log4j.PatternLayout

log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH:mm:ss}][%c]%m%n

至此：

IDEA搭建SSM实现登录、注册，数据增删改查功能

配置项目工程

第一步：将配置文件添加入工程

IDEA搭建SSM实现登录、注册，数据增删改查功能

配置webapp

在src下创建目录webapp 
IDEA搭建SSM实现登录、注册，数据增删改查功能 
web.xml文件

<!DOCTYPE web-app PUBLIC

"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"

"http://java.sun.com/dtd/web-app_2_3.dtd" >

<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_3_0.xsd"

     version="3.0">

  <display-name>Archetype Created Web Application</display-name>

  <!-- Spring和mybatis的配置文件 -->

  <context-param>

    <param-name>contextConfigLocation</param-name>

<param-value>classpath:spring-mybatis.xml</param-value>

  </context-param>

  <!--Log4j配置-->

  <context-param>

<param-name>log4jRefreshInterval</param-name>

<param-value>60000</param-value>

  </context-param>

  <listener>

<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>

  </listener>

  <!-- 编码过滤器 -->

  <filter>

<filter-name>encodingFilter</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>encodingFilter</filter-name>

<url-pattern>/*</url-pattern>

  </filter-mapping>

  <!--Spring监听器 ApplicationContext 载入 -->

  <listener>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

  </listener>

  <!-- 防止Spring内存溢出监听器 -->

  <listener>

<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>

  </listener>

  <!-- Spring MVC 核心配置开始 -->

  <servlet>

<servlet-name>mvc-dispatcher</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<!-- 可以通过contextConfigLocation来自定义SpringMVC配置文件的位置，如不指定，则默认在WEB-INF目录下，名称为[<servlet-name>]-servlet.xml，

     此时文件名必须为[<servlet-name>]-servlet.xml，否则会出错-->

<!--以下init-param是自定义SpringMVC的配置文件的位置 -->

<init-param>

  <param-name>contextConfigLocation</param-name>

  <param-value>classpath:spring-mvc.xml</param-value>

</init-param>

<load-on-startup>1</load-on-startup>

<async-supported>true</async-supported>

  </servlet>

  <!-- 拦截设置 -->

  <servlet-mapping>

<servlet-name>mvc-dispatcher</servlet-name>

<!-- 此处可以可以配置成*.do，对应struts的后缀习惯 -->

<url-pattern>/</url-pattern>

  </servlet-mapping>

  <!-- Spring MVC 核心配置结束 -->

  <!-- 配置SESSION超时，单位是分钟 -->

  <session-config>

    <session-timeout>15</session-timeout>

  </session-config>

  <welcome-file-list>

    <welcome-file>index.jsp</welcome-file>

  </welcome-file-list>

</web-app>

把webapp添加入项目工程 
IDEA搭建SSM实现登录、注册，数据增删改查功能

IDEA搭建SSM实现登录、注册，数据增删改查功能

添加artifacts 
IDEA搭建SSM实现登录、注册，数据增删改查功能 
配置tomcat 
IDEA搭建SSM实现登录、注册，数据增删改查功能 
IDEA搭建SSM实现登录、注册，数据增删改查功能 
IDEA搭建SSM实现登录、注册，数据增删改查功能

登录、注册，增删改查功能实现

项目结构如下 
IDEA搭建SSM实现登录、注册，数据增删改查功能 
controller层代码

package com.springmvc.controller;

import com.springmvc.pojo.Admin;

import com.springmvc.service.AdminService;

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 javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.List;

@Controller

public class main {

@Autowired

private AdminService adminService;

/**

  * 获取所有信息

 * @param request

 * @param model

 * @return

 */

@RequestMapping("/getAllUser")

public String getAllUser(HttpServletRequest request, Model model){

    List<Admin> admin=adminService.findAll();

    System.out.println(admin);

    model.addAttribute("list",admin);

    request.setAttribute("list",admin);

    return "allUser";

}

/**

 * 添加信息

 * @param admin

 * @param model

 * @return

 */

@RequestMapping("/addUser")

public String addUser(Admin admin, Model model){

    adminService.save(admin);

    return "redirect:getAllUser";

}

/**

 * 修改信息

 * @param admin

 * @param request

 * @param model

 * @return

 */

@RequestMapping("/updateUser")

public String updateUser(Admin admin,HttpServletRequest request,Model model){

    if(adminService.update(admin)){

        admin=adminService.findById(admin.getId());

        request.setAttribute("admin",admin);

        model.addAttribute("admin",admin);

        return "redirect:getAllUser";

    }else{

        return "error";

    }

}

/**

 * 根据id查询

 * @param id

 * @param request

 * @param model

 * @return

 */

@RequestMapping("/getUser")

public String getUser(int id,HttpServletRequest request,Model model){

    request.setAttribute("admin",adminService.findById(id));

    model.addAttribute("admin",adminService.findById(id));

    return "editUser";

}

/**

 * 删除用户

 * @param id

 */

@RequestMapping("/delUser")

public String delUser(int id){

    adminService.delete(id);

    return "redirect:getAllUser";

}

/**

 * 注册账号

 * @param admin

 * @param model

 * @return

 */

@RequestMapping("/register")

public String register(Admin admin, Model model){

    adminService.save(admin);

    return "login";

}

/**

 * 登录账号

 * @return

 */

@RequestMapping("/login")

public String login(Admin admin,Model model){

    Admin ad=adminService.login(admin);

    if(ad!=null){

        return "redirect:getAllUser";

    }else{

        return "error";

        }

    }

}

service层代码

package com.springmvc.service;

import com.springmvc.dao.AdminMapper;

import com.springmvc.pojo.Admin;

import com.sun.jna.platform.win32.Netapi32Util;

import org.springframework.stereotype.Service;

import javax.annotation.Resource;

import java.util.List;

@Service("AdminService")

public class AdminService {

    @Resource

    private AdminMapper adminMapper;

    /**

     * 添加数据

     */

    public void save(Admin admin) {

        adminMapper.save(admin);

    }

    /**

     * 根据id修改

     * @param admin

     * @return

     */

    public boolean update(Admin admin) {

        return adminMapper.update(admin);

    }

/**

 * 根据id删除

 * @param id

 * @return

 */

public boolean delete(int id) {

    return adminMapper.delete(id);

}

/**

 * 根据id查询

 * @param id

 * @return

 */

public Admin findById(int id) {

    Admin admin=adminMapper.findById(id);

    return admin;

}

/**

 * 查询所有

 * @return

 */

public List<Admin> findAll() {

    List<Admin> findallList=adminMapper.findAll();

    return findallList;

}

/**

 * 登录账号

 */

public Admin login(Admin admin){

    return adminMapper.login(admin);

}

}

dao层代码

package com.springmvc.dao;

import com.springmvc.pojo.Admin;

import java.util.List;

public interface AdminMapper {

void save(Admin admin);

boolean update(Admin admin);

boolean delete(int id);

Admin findById(int id);

List<Admin> findAll();

Admin login(Admin admin);

}

mapping层代码

<?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.springmvc.dao.AdminMapper" >

  <resultMap id="BaseResultMap" type="com.springmvc.pojo.Admin" >

    <id column="id" property="id" jdbcType="INTEGER" />

    <result column="name" property="name" jdbcType="VARCHAR" />

    <result column="password" property="password" jdbcType="VARCHAR" />

  </resultMap>

  <insert id="save" parameterType="com.springmvc.pojo.Admin">

        insert into admin(name,password) values(#{name},#{password})

    </insert>

  <update id="update" parameterType="com.springmvc.pojo.Admin">

        update admin set name=#{name},password=#{password} where id=#{id}

    </update>

  <delete id="delete" parameterType="int">

        delete from admin where id=#{id}

    </delete>

  <!-- mybsits_config中配置的alias类别名,也可直接配置resultType为类路径 -->

  <select id="findById" parameterType="int" resultType="com.springmvc.pojo.Admin">

        select id,name,password from admin where id=#{id}

    </select>

  <select id="findAll" resultType="com.springmvc.pojo.Admin">

        select id,name,password from admin

    </select>

    <select id="login" resultMap="BaseResultMap" parameterType="com.springmvc.pojo.Admin">

     select*from admin where name=#{name} and password=#{password}

  </select>

</mapper>

pojo层代码

package com.springmvc.pojo;

public class Admin {

private Integer id;

private String name;

private String password;

public Integer getId() {

    return id;

}

public void setId(Integer id) {

    this.id = id;

}

public String getName() {

    return name;

}

public void setName(String name) {

    this.name = name == null ? null : name.trim();

}

public String getPassword() {

    return password;

}

public void setPassword(String password) {

    this.password = password == null ? null : password.trim();

}

@Override

public String toString() {

    return "Admin{" +

            "id=" + id +

            ", name='" + name + '\'' +

            ", password='" + password + '\'' +

            '}';

}

}

<?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.springmvc.dao.AdminMapper" >  <resultMap id="BaseResultMap" type="com.springmvc.pojo.Admin" >    <id column="id" property="id" jdbcType="INTEGER" />    <result column="name" property="name" jdbcType="VARCHAR" />    <result column="password" property="password" jdbcType="VARCHAR" />  </resultMap>

<insert id="save" parameterType="com.springmvc.pojo.Admin">        insert into admin(name,password) values(#{name},#{password})    </insert>  <update id="update" parameterType="com.springmvc.pojo.Admin">        update admin set name=#{name},password=#{password} where id=#{id}    </update>  <delete id="delete" parameterType="int">        delete from admin where id=#{id}    </delete>  <!-- mybsits_config中配置的alias类别名,也可直接配置resultType为类路径 -->  <select id="findById" parameterType="int" resultType="com.springmvc.pojo.Admin">        select id,name,password from admin where id=#{id}    </select>  <select id="findAll" resultType="com.springmvc.pojo.Admin">        select id,name,password from admin    </select>
    <select id="login" resultMap="BaseResultMap" parameterType="com.springmvc.pojo.Admin">     select*from admin where name=#{name} and password=#{password}  </select>
</mapper>--------------------- 作者：char_long 来源：CSDN 原文：https://blog.csdn.net/sinat_37001576/article/details/79985228 版权声明：本文为博主原创文章，转载请附上博文链接！

上一篇：Storm入门之第一章


下一篇：转://MySQL客户端工具的选择