JAVA中使用MD5加密工具類實現對數據的加密處理

1.MD5工具類 

package com.ssm.util;

import java.security.MessageDigest;

public class MD5Util {
    //將字節數組轉成十六進制字符串
    private static String byteArrayToHexString(byte b[]) {
        StringBuffer resultSb = new StringBuffer();
        for (int i = 0; i < b.length; i++)
            resultSb.append(byteToHexString(b[i]));

        return resultSb.toString();
    }
    //對單個字節轉換成整數進行取商取余數計算
    private static String byteToHexString(byte b) {
        int n = b;
        if (n < 0)
            n += 256;
        int d1 = n / 16;
        int d2 = n % 16;
        //根據下標d1，d2去數組hexDigits的數據
        return hexDigits[d1] + hexDigits[d2];
    }

    public static String MD5Encode(String origin, String charsetname) {
        String resultString = null;
        try {
            resultString = new String(origin);
         // 獲得MD5摘要算法的 MessageDigest 對象
            MessageDigest md = MessageDigest.getInstance("MD5");
            if (charsetname == null || "".equals(charsetname))
                //將加密之后的字節數據轉換成16進制的字符串
                resultString = byteArrayToHexString(md.digest(resultString
                        .getBytes()));
            else
                resultString = byteArrayToHexString(md.digest(resultString
                        .getBytes(charsetname)));
        } catch (Exception exception) {
        }
        return resultString;
    }

    private static final String hexDigits[] = {"0", "1", "2", "3", "4", "5",
            "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"};
}

2.在登錄注冊中使用MD5加密算法

　　demo目錄結構 

　　數據庫用戶表

CREATE TABLE `user` (
  `id` int(20) NOT NULL AUTO_INCREMENT COMMENT '編號',
  `userName` varchar(50) COLLATE utf8_unicode_ci NOT NULL COMMENT '用戶名',
  `password` varchar(50) COLLATE utf8_unicode_ci NOT NULL COMMENT '密碼',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci

　　pojo對象User.java

package com.ssm.pojo;

public class User {
    private Integer id;
    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;
    }
    
    
    

}

2.1DAO層

　　DAO層：DAO層主要是做數據持久層的工作，負責與數據庫進行聯絡的一些任務都封裝在此， 

• DAO層的設計首先是設計DAO的接口，
• 然后在Spring的配置文件中定義此接口的實現類，
• 然后就可在模塊中調用此接口來進行數據業務的處理，而不用關心此接口的具體實現類是哪個類，顯得結構非常清晰，
• DAO層的數據源配置，以及有關數據庫連接的參數都在Spring的配置文件中進行配置。

UserDaO.java

package com.ssm.dao;

import com.ssm.pojo.User;

public interface UserDao {
    //用戶注冊
    public int register(User user) ;
    //登陸
    public User login(User user);

}

UserMapper.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.ssm.dao.UserDao">
    <resultMap type="com.ssm.pojo.User" id="UserResult">
        <result property="id" column="id" />
        <result property="userName" column="userName" />
        <result property="password" column="password" />

    </resultMap>

    <select id="login" parameterType="com.ssm.pojo.User" resultMap="UserResult">
        select * from
        user where userName=#{userName} and password=#{password} limit 1
    </select>

    <insert id="register" parameterType="com.ssm.pojo.User">
        insert into user(userName,password)
        values(#{userName},#{password})
    </insert>
</mapper> 

2.2業務層：Service層

Service層：Service層主要負責業務模塊的邏輯應用設計。 

• 首先設計接口，再設計其實現的類
• 接着再在Spring的配置文件中配置其實現的關聯。這樣我們就可以在應用中調用Service接口來進行業務處理。
• Service層的業務實現，具體要調用到已定義的DAO層的接口，
• 封裝Service層的業務邏輯有利於通用的業務邏輯的獨立性和重復利用性，程序顯得非常簡潔。

UserService.java

package com.ssm.service.impl;

import com.ssm.pojo.User;

public interface UserService {
    public User login(User user); 
     public int register(User user);

}

UserServiceImpl.java

package com.ssm.service.impl;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import com.ssm.dao.UserDao;
import com.ssm.pojo.User;
@Service("userService")
public class UserServiceImpl implements UserService {
    @Resource
    private UserDao userDao;

    public User login(User user) {
        // TODO Auto-generated method stub
        return userDao.login(user);
    }

    public int register(User user) {
        // TODO Auto-generated method stub
        return userDao.register(user);
    }
    

}

2.3控制層：Controller層

Controller層:Controller層負責具體的業務模塊流程的控制， 

• 在此層里面要調用Service層的接口來控制業務流程，
• 控制的配置也同樣是在Spring的配置文件里面進行，針對具體的業務流程，會有不同的控制器，我們具體的設計過程中可以將流程進行抽象歸納，設計出可以重復利用的子單元流程模塊，這樣不僅使程序結構變得清晰，也大大減少了代碼量。

RegisterController.java

package com.ssm.controller;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;


import com.ssm.pojo.User;
import com.ssm.service.impl.UserService;

import com.ssm.util.MD5Util;

@Controller
@RequestMapping("user")
public class RegisterController {
    @Resource
    private UserService userService;
    @RequestMapping("/register")
    public String register(User user, HttpServletRequest request){
        String username=request.getParameter("userName");
        String password=request.getParameter("password");
        String Md5password=MD5Util.MD5Encode(password, "UTF-8");
        System.err.println(Md5password);
        user.setPassword(Md5password);
        user.setUserName(username);
        int result=userService.register(user);
        if (result > 0) {
            return "index";
        } else {
            return"register";
        }
        
        
    }
    

}

LoginController.java

package com.ssm.controller;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.ssm.pojo.User;
import com.ssm.service.impl.UserService;
import com.ssm.util.MD5Util;

@Controller
@RequestMapping("user")

public class LoginController {
    @Resource
    private UserService userService;
    @RequestMapping("/login")
    public String login(User user,HttpServletRequest request){
        String userName=request.getParameter("userName");
        String password=request.getParameter("password");
        //將登陸 提交的密碼進行MD5加密然后到數據庫加密密碼進行對比驗證
        String Md5password=MD5Util.MD5Encode(password, "UTF-8");
        user.setUserName(userName);
        user.setPassword(Md5password);
        User result=userService.login(user);
        if(result==null){
            request.setAttribute("errorMsg", "請認真核對賬號、密碼！");
            return "login";
        }else{
            return "success";
        }
        
        
    }

}

 

2.4view層（視圖層）

• View層 此層與控制層結合比較緊密，需要二者結合起來協同工發。View層主要負責前台jsp頁面的表示.

login.jsp

<%@ page language="java" import="java.util.*" contentType="text/html; charset=utf-8" %>
<html>
<body>

<form action="${pageContext.request.contextPath}/user/login" method="post">
<p>用戶名: <input type="text" name="username" style="width: 300px" /></p>
<p>密&nbsp;&nbsp;碼: <input type="password" name="password" style="width: 300px" /></p>
<p><input type="submit" value="登陸" /></p>

</form>
<a href="jsp/register.jsp">注冊</a>
</body>
</html>

register.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>注冊</title>
</head>
<body>
<form action="${pageContext.request.contextPath}/user/register" method="post">
<p>用戶名: <input type="text" name="userName" style="width: 300px" /></p>
<p>密&nbsp;&nbsp;碼: <input type="password" name="password" style="width: 300px" /></p>
<p><input type="submit" value="注冊" /></p>

</form>

</body>
</html>

DAO層，Service層這兩個層次都可以單獨開發，互相的耦合度很低，完全可以獨立進行，這樣的一種模式在開發大項目的過程中尤其有優勢Controller，View層因為耦合度比較高，因而要結合在一起開發，但是也可以看作一個整體獨立於前兩個層進行開發。這樣，在層與層之前我們只需要知道接口的定義，調用接口即可完成所需要的邏輯單元應用，一切顯得非常清晰簡單。Service邏輯層設計Service層是建立在DAO層之上的，建立了DAO層后才可以建立Service層，而Service層又是在Controller層之下的，因而Service層應該既調用DAO層的接口，又要提供接口給Controller層的類來進行調用，它剛好處於一個中間層的位置。每個模型都有一個Service接口，每個接口分別封裝各自的業務處理方法。

3.MD5工具類

MD5Util.java

package com.ssm.util;

import java.security.MessageDigest;

public class MD5Util {
    //將字節數組轉成十六進制字符串
    private static String byteArrayToHexString(byte b[]) {
        StringBuffer resultSb = new StringBuffer();
        for (int i = 0; i < b.length; i++)
            resultSb.append(byteToHexString(b[i]));

        return resultSb.toString();
    }
    //對單個字節轉換成整數進行取商取余數計算
    private static String byteToHexString(byte b) {
        int n = b;
        if (n < 0)
            n += 256;
        int d1 = n / 16;
        int d2 = n % 16;
        //根據下標d1，d2去數組hexDigits的數據
        return hexDigits[d1] + hexDigits[d2];
    }

    public static String MD5Encode(String origin, String charsetname) {
        String resultString = null;
        try {
            resultString = new String(origin);
         // 獲得MD5摘要算法的 MessageDigest 對象
            MessageDigest md = MessageDigest.getInstance("MD5");
            if (charsetname == null || "".equals(charsetname))
                //將加密之后的字節數據轉換成16進制的字符串
                resultString = byteArrayToHexString(md.digest(resultString
                        .getBytes()));
            else
                resultString = byteArrayToHexString(md.digest(resultString
                        .getBytes(charsetname)));
        } catch (Exception exception) {
        }
        return resultString;
    }

    private static final String hexDigits[] = {"0", "1", "2", "3", "4", "5",
            "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"};
}

4.ssm框架的配置文件

①數據庫配置文件

jdbc.properties

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/ssmtest?useUnicode=true&characterEncoding=UTF-8
username=root
password=123456
#定義初始連接數
initialSize=0
#定義最大連接數
maxActive=20
#定義最大空閑
maxIdle=20
#定義最小空閑
minIdle=1
#定義最長等待時間
maxWait=60000

②log4j配置文件

log4j.properties

#定義LOG輸出級別
log4j.rootLogger=INFO,Console,File
#定義日志輸出目的地為控制台
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Target=System.out
#可以靈活地指定日志輸出格式，下面一行是指定具體的格式
log4j.appender.Console.layout = org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n

#文件大小到達指定尺寸的時候產生一個新的文件
log4j.appender.File = org.apache.log4j.RollingFileAppender
#指定輸出目錄
log4j.appender.File.File = logs/springmvcMybist/ssm.log
#定義文件最大大小
log4j.appender.File.MaxFileSize = 10MB
#輸出所以日志，如果換成DEBUG表示輸出DEBUG以上級別日志
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

③spring-mybatis配置文件

spring-mybatis.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"
    xsi:schemaLocation="http://www.springframework.org/schema/beans  
                        http://www.springframework.org/schema/beans/spring-beans-4.0.xsd  
                        http://www.springframework.org/schema/context  
                        http://www.springframework.org/schema/context/spring-context-4.0.xsd  
                        http://www.springframework.org/schema/mvc  
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    <!-- 自動掃描 -->
    <context:component-scan base-package="com.ssm" />

    <!-- 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}" />
        <!-- 初始化連接大小 -->
        <property name="initialSize" value="${initialSize}"></property>
        <!-- 連接池最大數量 -->
        <property name="maxActive" value="${maxActive}"></property>
        <!-- 連接池最大空閑 -->
        <property name="maxIdle" value="${maxIdle}"></property>
        <!-- 連接池最小空閑 -->
        <property name="minIdle" value="${minIdle}"></property>
        <!-- 獲取連接最大等待時間 -->
        <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" />
        <!-- 自動掃描mapping.xml文件 -->
        <property name="mapperLocations" value="classpath:com/ssm/mapping/*.xml"></property>
    </bean>

    <!-- DAO接口所在包名，Spring會自動查找其下的類 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.ssm.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>

    <!-- (事務管理)transaction manager, use JtaTransactionManager for global tx -->
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>
</beans>

④spring-mvc配置文件

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

    <!--避免IE執行AJAX時，返回JSON出現下載文件 -->
    <bean id="mappingJacksonHttpMessageConverter"
        class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>text/html;charset=UTF-8</value>
            </list>
        </property>
    </bean>

    <!-- 啟動SpringMVC的注解功能，完成請求和注解POJO的映射 -->
    <bean
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="mappingJacksonHttpMessageConverter" />    <!-- JSON轉換器 -->
            </list>
        </property>
    </bean>

    <!-- 對靜態資源的訪問 -->
    <!-- <mvc:resources mapping="/js/**" location="/js/" /> <mvc:resources mapping="/css/**" 
        location="/css/" /> -->

    <!-- 自動掃描該包，使SpringMVC認為包下用了@controller注解的類是控制器 -->
    <context:component-scan base-package="com.ssm.controller" />

    <!-- 添加注解驅動 -->
    <mvc:annotation-driven enable-matrix-variables="true" />
    <!-- 允許對靜態資源文件的訪問 -->

    <mvc:default-servlet-handler />

    <!-- 定義跳轉的文件的前后綴 ，視圖模式配置 -->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- 這里的配置我的理解是自動給后面action的方法return的字符串加上前綴和后綴，變成一個 可用的url地址 -->
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>

    <!-- 配置文件上傳，如果沒有使用文件上傳可以不用配置，當然如果不配，那么配置文件中也不必引入上傳組件包 -->
    <bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 默認編碼 -->
        <property name="defaultEncoding" value="UTF-8" />
        <!-- 文件大小最大值 -->
        <property name="maxUploadSize" value="10485760000" />
        <!-- 內存中的最大值 -->
        <property name="maxInMemorySize" value="40960" />
    </bean>
</beans>

⑤配置web.xml文件

<?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"
    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>
    
    <!-- 編碼過濾器 -->
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <async-supported>true</async-supported>
        <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監聽器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    
    <!-- 防止Spring內存溢出監聽器 -->
    <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
    </listener>
    
    <!-- Spring MVC servlet -->
    <servlet>
        <servlet-name>SpringMVC</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>
        <async-supported>true</async-supported>
    </servlet>
    <servlet-mapping>
        <servlet-name>SpringMVC</servlet-name>
        <!-- 此處可以可以配置成*.do，對應struts的后綴習慣 -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
    <welcome-file-list>
        <welcome-file>/index.html</welcome-file>
        <welcome-file>/index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

4.maven工程的pom.xml配置

<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.ssmdemo01</groupId>
  <artifactId>mavenproject</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>mavenproject Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <properties>  
        <!-- spring版本號 -->  
        <spring.version>4.0.2.RELEASE</spring.version>  
        <!-- mybatis版本號 -->  
        <mybatis.version>3.2.6</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>  
    </properties>  
  
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    
      <dependency>  
            <groupId>javax</groupId>  
            <artifactId>javaee-api</artifactId>  
            <version>7.0</version>  
        </dependency>  
    
    
    
     <dependency>  
            <groupId>junit</groupId>  
            <artifactId>junit</artifactId>  
            <version>4.11</version>  
            <!-- 表示開發的時候引入，發布的時候不會加載此包 -->  
            <scope>test</scope>  
        </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-web</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-oxm</artifactId>  
            <version>${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>${spring.version}</version>  
        </dependency>  
        <!-- mybatis核心包 -->  
        <dependency>  
            <groupId>org.mybatis</groupId>  
            <artifactId>mybatis</artifactId>  
            <version>${mybatis.version}</version>  
        </dependency>  
        <!-- mybatis/spring包 -->  
        <dependency>  
            <groupId>org.mybatis</groupId>  
            <artifactId>mybatis-spring</artifactId>  
            <version>1.2.2</version>  
        </dependency>  
        <!-- 導入java ee jar 包 -->  
        <dependency>  
            <groupId>javax</groupId>  
            <artifactId>javaee-api</artifactId>  
            <version>7.0</version>  
        </dependency>  
        <!-- 導入Mysql數據庫鏈接jar包 -->  
        <dependency>  
            <groupId>mysql</groupId>  
            <artifactId>mysql-connector-java</artifactId>  
            <version>5.1.30</version>  
        </dependency>  
        <!-- 導入dbcp的jar包，用來在applicationContext.xml中配置數據庫 -->  
        <dependency>  
            <groupId>commons-dbcp</groupId>  
            <artifactId>commons-dbcp</artifactId>  
            <version>1.2.2</version>  
        </dependency>  
        <!-- JSTL標簽類 -->  
        <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>  
          
          
        <!-- 格式化對象，方便輸出日志 -->  
        <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>  
        <!-- 上傳組件包 -->  
        <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>  
    
    
  </dependencies>
  <build>
    <finalName>mavenproject</finalName>
  </build>
  
</project>

5.運行項目