java SSM+maven+mysql搭建实现用户登录及查看信息

使用maven来构建环境，开发工具是eclipse，Tomcat为8.5，jdk为1.8

所有代码及位置贴出，直接复制代码就是完整项目

1、maven中的pom.xml，这个文件是将需要的jar进行下载并载入项目，不需要一个一个去找。

<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>hyphq</groupId>
	<artifactId>hyphq</artifactId>
	<packaging>war</packaging>
	<version>0.0.1-SNAPSHOT</version>
	<name>hyphq Maven Webapp</name>
	<url>http://maven.apache.org</url>
	<dependencies>
		<dependency>
			<!-- 使用junit4 用注解方式 -->
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.11</version>
			<scope>test</scope>
		</dependency>
		<!-- 补全项目依赖 -->
		<!-- 1：日志 java日志：slf4j，log4j，logback，common-logging slf4j 是规范/接口 日志实现:log4j,logback,common-logging 
			使用：slf4j + logback -->
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>1.7.12</version>
		</dependency>
		<dependency>
			<groupId>ch.qos.logback</groupId>
			<artifactId>logback-core</artifactId>
			<version>1.1.1</version>
		</dependency>
		<!-- 实现slf4j接口并整合 -->
		<dependency>
			<groupId>ch.qos.logback</groupId>
			<artifactId>logback-classic</artifactId>
			<version>1.1.1</version>
		</dependency>

		<!-- 2：数据库相关依赖 -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.35</version>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>c3p0</groupId>
			<artifactId>c3p0</artifactId>
			<version>0.9.1.2</version>
		</dependency>
		<!-- DAO框架：MyBatis依赖 -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>3.3.0</version>
		</dependency>
		<!-- mybatis自身实现的spring整合依赖 -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.2.3</version>
		</dependency>
		<!--:3：servlet web相关依赖 -->
		<dependency>
			<groupId>taglibs</groupId>
			<artifactId>standard</artifactId>
			<version>1.1.2</version>
		</dependency>
		<dependency>
			<groupId>jstl</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
			<version>2.5.4</version>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.1.0</version>
		</dependency>
		<!-- 4：spring依赖 -->
		<!-- 1)spring核心依赖 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>4.2.0.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-beans</artifactId>
			<version>4.2.0.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>4.2.0.RELEASE</version>
		</dependency>
		<!-- 2)spring dao层依赖 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>4.2.0.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</artifactId>
			<version>4.2.0.RELEASE</version>
		</dependency>
		<!-- 3)spring web相关依赖 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>4.2.0.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>4.2.0.RELEASE</version>
		</dependency>
		<!-- 4)spring test相关依赖 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>4.2.0.RELEASE</version>
		</dependency>
	</dependencies>
	<build>
		<finalName>hyphq</finalName>
		<plugins>
			<!-- define the project compile level -->
			<!-- maven编译用的版本控制，控制jdk的版本不会回跳 -->
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>2.3.2</version>
				<configuration>
					<source>1.8</source>
					<target>1.8</target>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

2、web.xml，此文件在webapp/WEB-INF中

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" metadata-complete="true" version="3.1">
  <filter>
    <filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <servlet>
    <servlet-name>mvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring/spring-*.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>mvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

3、ssm框架的运行步骤为DataBase ===> Entity ===> Mapper.xml ===> Mapper.Java ===> Service.java ===> Controller.java ===> Jsp.

先建数据库，我的项目为查看用户信息，所以要有如下字段

id	idcode	xingming	mima	chuanma	zhuangtai
1	11	111	111	111	0
2	22	222	222	222	0

4、根据数据库创建对应实体类User.java

package com.entity;

public class User {

	private String id;
	private String idcode;
	private String xingming;
	private String mima;
	private String chuanma;
	private String zhuangtai;
	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	public String getIdcode() {
		return idcode;
	}
	public void setIdcode(String idcode) {
		this.idcode = idcode;
	}
	public String getXingming() {
		return xingming;
	}
	public void setXingming(String xingming) {
		this.xingming = xingming;
	}
	public String getMima() {
		return mima;
	}
	public void setMima(String mima) {
		this.mima = mima;
	}
	public String getChuanma() {
		return chuanma;
	}
	public void setChuanma(String chuanma) {
		this.chuanma = chuanma;
	}
	public String getZhuangtai() {
		return zhuangtai;
	}
	public void setZhuangtai(String zhuangtai) {
		this.zhuangtai = zhuangtai;
	}
	@Override
	public String toString() {
		return "User [id=" + id + ", idcode=" + idcode + ", xingming=" + xingming + ", mima=" + mima + ", chuanma="
				+ chuanma + ", zhuangtai=" + zhuangtai + "]";
	}
	public User(String id, String idcode, String xingming, String mima, String chuanma, String zhuangtai) {
		super();
		this.id = id;
		this.idcode = idcode;
		this.xingming = xingming;
		this.mima = mima;
		this.chuanma = chuanma;
		this.zhuangtai = zhuangtai;
	}
	public User() {
		super();
		// TODO Auto-generated constructor stub
	}
	
}

5 Dao层UserDao.java及映射文件UserDao.xml对应的流程为mapper.xml和mapper.java

UserDao.java

package com.dao;

import com.entity.User;

public interface UserDao {

	public User findUser(String idcode);
}

UserDao.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.dao.UserDao">
	<!-- 目的：为DAO接口方法提供sql语句配置 -->
	<!-- 查询用户和密码进行登录 -->
	<select id="findUser" resultType="User"
		parameterType="String">

		select * from hyphq where idcode = #{idcode}

	</select>
</mapper>

6、关键文件spring配置文件

spring-dao.xml 复制注意路径

<?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:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	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/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">
	<!-- 配置整合mybatis过程 -->
	<!-- 1:配置数据库相关参数 properties的属性:${url} -->
	<context:property-placeholder
		location="classpath:jdbc.properties" />
	<!-- 2:数据库连接池 -->
	<bean id="dataSource"
		class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<!-- 配置连接池属性 -->
		<property name="driverClass" value="${jdbc.driverClass}"></property>
		<property name="jdbcUrl" value="${jdbc.url}"></property>
		<property name="user" value="${jdbc.username}"></property>
		<property name="password" value="${jdbc.password}"></property>

		<!-- c3p0连接池的私有属性 -->
		<property name="maxPoolSize" value="30"></property>
		<property name="minPoolSize" value="10"></property>
		<!-- 关闭连接后不自动commit -->
		<property name="autoCommitOnClose" value="false"></property>
		<!-- 获取连接超时时间 -->
		<property name="checkoutTimeout" value="1000"></property>
		<!-- 当获取连接失败重试次数 -->
		<property name="acquireRetryAttempts" value="2"></property>
	</bean>

	<!-- 约定大于配置 -->
	<!-- 3:配置sqlsessionfactory对象 -->
	<bean id="sqlSessionFactory"
		class="org.mybatis.spring.SqlSessionFactoryBean">
		<!-- 注入数据库连接池 -->
		<property name="dataSource" ref="dataSource"></property>
		<!-- 配置mybatis全局配置文件:mybatis-config.xml -->
		<property name="configLocation"
			value="classpath:mybatis-config.xml"></property>
		<!-- 扫描entity包 使用别名 com.sy.entity.User ->User -->
		<property name="typeAliasesPackage" value="com.entity"></property>
		<!-- 扫描sql配置文件：mapping需要的xml文件 -->
		<property name="mapperLocations"
			value="classpath:mapper/*.xml"></property>
	</bean>

	<!-- 4：配置扫描Dao接口的包，动态实现Dao接口，注入到Spring容器中 -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<!-- 注入sqlsessionfactory -->
		<property name="sqlSessionFactoryBeanName"
			value="sqlSessionFactory"></property>
		<!-- 给出需要扫描的Dao接口包 -->
		<property name="basePackage" value="com.dao"></property>
	</bean>

</beans>

spring-service.xml 复制注意路径

<?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:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	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/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">
	<!-- 扫描service包下所有使用注解的类型 -->
	<context:component-scan
		base-package="com.service" />

	<!-- 配置事务管理器 -->
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<!-- 注入数据库的连接池 -->
		<property name="dataSource" ref="dataSource" />
	</bean>

	<!-- 配置基于注解的声明式事务 默认使用注解来管理事务行为 -->
	<tx:annotation-driven
		transaction-manager="transactionManager" />
</beans>

spring-web.xml 复制注意路径

<?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:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	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/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        ">
	<!-- 配置springMVC -->
	<!-- 1：开启springMVC注解模式 -->
	<!-- 简化配置： (1)自动注册DefaultAnnotationHandlerMapping，AnnotationMethodHandlerAdapter 
		(2)提供一系列：数据绑定，数字和日期的format @NumberFormat,@DataTimeFormat xml,json默认读写支持 -->
	<mvc:annotation-driven />

	<!--处理静态资源 -->
	<mvc:default-servlet-handler />
	<mvc:resources location="/WEB-INF/js/" mapping="/js/**" />
	<mvc:resources location="/WEB-INF/css/" mapping="/css/**" />
	<mvc:resources location="/WEB-INF/images/"
		mapping="/images/**" />
	<mvc:resources location="/WEB-INF/webfonts/" mapping="/webfonts/**" />
	<!-- 2：配置jsp显示ViewResolver -->
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="viewClass"
			value="org.springframework.web.servlet.view.JstlView" />
		<property name="prefix" value="/WEB-INF/jsp/" />
		<property name="suffix" value=".jsp" />
	</bean>
	<!-- 3：扫描web相关的bean -->
	<context:component-scan
		base-package="com.controller" />
</beans>

7、UserService.java及UserServiceImpl.java

package com.service;

import com.entity.User;

public interface UserService {

	public User login(String idcode,String mima);
}

package com.service.Impl;

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

import com.dao.UserDao;
import com.entity.User;
import com.service.UserService;
@Service
public class UserServiceImpl implements UserService {

	@Autowired
	private UserDao userDao;
	
	public User login(String idcode,String mima) {
		User user = userDao.findUser(idcode);
		if(user != null && user.getMima().equals(mima)) {
			return user;
		}
		return null;
	}
}

8、数据库连接及配置文件

mybatis-config.xml

<?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>
		<!--使用jdbc的getGeneratedKeys获取数据库自增主键值  -->
		<setting name="useGeneratedKeys" value="true"/>
		<!-- 使用列别名替换列名   默认：true
			select name as title from table
		 -->
		<setting name="useColumnLabel" value="true"/>
		<!-- 开启驼峰命名转换：Table(create_time) -> Entity(createTime) -->
		<setting name="mapUnderscoreToCamelCase" value="true"/>
	</settings>  
  
</configuration>

jdbc.properties按个人不同数据库更改

jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/etms?useUnicode=true&characterEncoding=UTF-8
jdbc.username=root
jdbc.password=12345678

9、controller（控制器）

UserController.java

package com.controller;

import javax.servlet.http.HttpSession;

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.SessionAttributes;

import com.entity.User;
import com.service.UserService;

@Controller
@SessionAttributes("user")
public class UserController {

	@Autowired
	private UserService userService;
	
	@RequestMapping("/login")
	public String login() {
		return "login";
	}
	@RequestMapping("/info")
	public String login(User user,Model model) {
		user = userService.login(user.getIdcode(), user.getMima());
		if(user != null){
			model.addAttribute("user",user);
			return "success";
		}
		return "fail";
	}
	
	
}

10、login.jsp

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!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>
</head>
<body>

	<form action="/hyphq/info" method="post">
		<table>
			<tr>
				<td>用户名:</td>
				<td><input id="idcode" name="idcode" type="text"></td>
			</tr>
			<tr>
				<td>密码:</td>
				<td><input id="mima" name="mima" type="password"></td>
			</tr>
			<tr>
				<td><input type="submit" value="登录"></td>
			</tr>
		</table>
	</form>
</body>
</html>

success.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!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>
</head>
<body>

	<div>
		<strong> welcome,${sessionScope.user.xingming}! </strong>
	</div>
	this is success page!

</body>
</html>

fail.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="ISO-8859-1"%>
<!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>
</head>
<body>
		error
</body>
</html>

最后界面，我取消了8080接口，具体可以百度

因为有@RequestMapping拦截器，所以一定要写对访问路径。

java SSM+maven+mysql搭建实现用户登录及查看信息

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