[置顶] Maven+SSM(Spring+SpringMVC+Mybatis)实现登录功能

一 用IDEA构建一个空的Maven web项目

重点截图：



然后下一步直到完成（设置项目名和maven地址）

二 搭建环境

1 添加依赖

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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>com.test</groupId>
<artifactId>testMaven</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>testMaven Maven Webapp</name>
<url>http://maven.apache.org</url>

<properties>
<spring.version>4.2.4.RELEASE</spring.version>
<mysql.version>5.1.32</mysql.version>
<dbcp.version>1.4</dbcp.version>
<mybatis.version>3.3.0</mybatis.version>
<mybatis-spring.version>1.2.3</mybatis-spring.version>
<slf4j.version>1.7.5</slf4j.version>
<javassist.version>3.16.1-GA</javassist.version>
<cglib.version>2.2.2</cglib.version>
<junit.version>4.10</junit.version>
<servlet.version>2.5</servlet.version>
<jsp.version>2.0</jsp.version>
<jstl.version>1.2</jstl.version>
</properties>

<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>

<!-- Spring依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>

<!-- mysql数据库驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>

<!-- dbcp连接池 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>${dbcp.version}</version>
</dependency>

<!-- mybatis及其Spring整合依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis-spring.version}</version>
</dependency>

<!-- 日志 -->
<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>

<!-- 字节码类库 -->
<dependency>
<groupId>org.javassist</groupId>
<artifactId>javassist</artifactId>
<version>${javassist.version}</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>${cglib.version}</version>
</dependency>

<!-- 单元测试 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>

<!-- Servlet，jsp，jstl依赖 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>${servlet.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>${jsp.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
<!--文件上传包-->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<!--json转换包-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.32</version>
</dependency>
</dependencies>
<build>
<finalName>testMaven</finalName>
</build>
</project>

2 建立对应的目录文件夹

3 写配置文件

db.properties

#数据源的配置信息
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/testweb?characterEncoding=utf-8
jdbc.username=root
jdbc.password=root

log4j.properties

log4j.rootLogger=DEBUG, stdout
log4j.appender.CONSOLE.Encoding=UTF-8
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d[%t]%-5p[%c]-%m%n
log4j.appender.syslog.encoding=UTF-8

spring-context.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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"> 
<!-- 配置数据源的文件的位置 -->
<!--<context:property-placeholder location="classpath:db.properties"/>-->

<!--可以配置多个配置文件-->
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:db.properties</value>
</list>
</property>
<property name="fileEncoding" value="utf-8"/>
</bean>

<!-- 配置数据源  可以使用DriverManagerDataSource 或ComboPooledDataSource 后者比较强大：com.mchange.v2.c3p0.ComboPooledDataSource 需要c3p0的包  -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<!-- 数据库连接池（需要数据源连接池的可以自己配置） -->
</bean>

<!-- 配置sqlSessionFactory: 将spring和mybatis整合-->
<bean id = "sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="mapperLocations" value="classpath:/mapping/*.xml"></property>
<!--它一般对应我们的实体类所在的包，这个时候会自动取对应包中不包括包名的简单类名作为包括包名的别名-->
<property name="typeAliasesPackage" value="com.manage.model"></property>
</bean>

<!-- 自动扫描mapper接口,注入sqlsessionfactory ,重点！！！！！-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.manage.dao"/>
</bean>

<!--SqlSessionTemplate是MyBatis-Spring的核心。这个类负责管理MyBatis的SqlSession,调用MyBatis的SQL方法-->
<bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg index="0" ref="sqlSessionFactory"/>
</bean>

<!--支持注解-->
<tx:annotation-driven transaction-manager="transactionManage"/>
<!-- 配置事务管理器 -->
<bean id = "transactionManage" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>

<!-- 扫描service -->
<context:component-scan base-package="com.manage.service" />
</beans>

spring-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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> 
<!-- 扫描带@Controller的类 -->
<context:component-scan base-package="com.manage.controller" />

<!-- 加载注解驱动，自动加载默认处理器映射器和处理器适配器 -->
<mvc:annotation-driven />

<!-- 视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 可以不配置，默认使用jstl视图 -->
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<!-- jsp前缀 -->
<property name="prefix" value="/WEB-INF/page/" />
<!-- jsp后缀 -->
<property name="suffix" value=".jsp" />
</bean>

<!--图片的上传-->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 上传文件大小上限，单位为字节（10MB） -->
<property name="maxUploadSize">
<value>10485760</value>
</property>
<!-- 请求的编码格式，必须和jSP的pageEncoding属性一致，以便正确读取表单的内容，默认为ISO-8859-1 -->
<property name="defaultEncoding">
<value>UTF-8</value>
</property>
</bean>

<!--配置json转换-->
<mvc:annotation-driven>
<mvc:message-converters register-defaults="true">
<!-- 避免IE执行AJAX时,返回JSON出现下载文件 -->
<bean id="fastJsonHttpMessageConverter" class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>application/json;charset=UTF-8</value>
</list>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
</beans>

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_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>ssmTest</display-name>

<!-- spring的配置 文件-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-context.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- springmvc（前端控制器）的配置文件 -->
<servlet>
<servlet-name>springDispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springDispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

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

<!-- log4j begin -->
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>classpath:log4j.properties</param-value>
</context-param>
<context-param>
<param-name>log4jRefreshInterval</param-name>
<param-value>600000</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.util.Log4jConfigListener
</listener-class>
</listener>
<!-- log4j end -->

<!-- 字符集 begin -->
<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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 字符集 end -->
</web-app>

写登录实例

Person.java

package com.manage.model;

public class Person {
private Long id;

private String username;

private String password;

public Long getId() {
return id;
}

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

public String getUsername() {
return username;
}

public void setUsername(String username) {
this.username = username == null ? null : username.trim();
}

public String getPassword() {
return password;
}

public void setPassword(String password) {
this.password = password == null ? null : password.trim();
}
}

PersonMapper接口

package com.manage.dao;

import com.manage.model.Person;
import org.apache.ibatis.annotations.*;

public interface PersonMapper {

Person select(@Param("name") String name, @Param("age") int age);

}

mapper文件

<?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.manage.dao.PersonMapper">

<resultMap id="person" type="Person">
<result property="username" column="name"></result>
<result property="password" column="age"></result>
</resultMap>

<select id="select" resultMap="person">
SELECT * FROM tuser WHERE name=#{name} AND age=#{age}
</select>
</mapper>

service接口

package com.manage.service;

import com.manage.model.Person;

public interface TestService {

public Person login(String name,int age);
}

service实现类

package com.manage.service.impl;

import com.manage.dao.PersonMapper;
import com.manage.model.Person;
import com.manage.service.TestService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
* Created by XRog
* On 2/1/2017.12:58 AM
*/
@Service
public class TestServiceImpl implements TestService {

@Autowired
private PersonMapper personMapper;

public Person login(String name, int age) {
return personMapper.select(name,age);
}
}

controller

package com.manage.controller;

import com.manage.model.Person;
import com.manage.service.TestService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
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.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;

/**
* Created by XRog
* On 2/1/2017.12:36 AM
*/
@Controller
@RequestMapping("/user")
public class MainController {

@Autowired
private TestService testService;

@RequestMapping(value = "/login")
public ModelAndView login(@RequestParam("name") String name,
@RequestParam("age") int age,
HttpServletRequest request) {
Person person = testService.login(name, age);
if (person == null) {
ModelAndView modelAndView = new ModelAndView("loginError", "username", name);
return modelAndView;
}
request.getSession().setAttribute("user", person);
ModelAndView modelAndView = new ModelAndView("loginSuccess");
return modelAndView;
}

}

loginSuccess.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="utf-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core"%>
<html>
<head>
<title>登录成功</title>
</head>
<body>
<h2>恭喜您！${sessionScope.user.username},您的年龄是${sessionScope.user.password}岁</h2>
</body>
</html>

loginError.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="utf-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core"%>
<html>
<head>
<title>登录失败</title>
</head>
<body>
<h2>很遗憾！${requestScope.username},登录失败</h2>
</body>
</html>

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="utf-8" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<c:set var="manage" value="${pageContext.request.contextPath}" />
<html>
<head>
<title>登录</title>
</head>
<body>
<form action="${manage}/user/login">
用户名：<input type="text" name="name" /><br/>
年龄：<input type="number" name="age"><br/>
<input type="submit" value="登录" /><br/>
</form>
</body>
</html>

表结构：

试运行