Java实现中文算数验证码的实现示例(算数运算+-*/)

为了防止，页面向数据库暴力注册入力，用户登录暴力破解，所以加入验证码，验证码无法被软件获取上边的内容(加入算数计算，更加安全)，所以在现在技术，暂时安全。

先看效果图：

第一次加载比较慢，防止无法加载验证码显示，后台获取准备好的默认正在加载图片(静态图片)，后台图片获取好后，替代。

验证码效果图：

后台Java图片实现类VerificationCodeTool：

package com.tsXs.fileshare.tools;
 
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
import org.apache.log4j.Logger;
 
/**
 * 
 * ClassName: VerificationCodeTool <br/>
 * Description: creat verification code <br/>
 * Date: 2015-3-3 下午08:37:55 <br/>
 * <br/>
 * 
 * @author yptian@aliyun.com
 * 
 * first made
 * @version 1.0.0<br/>
 *
 */
public class VerificationCodeTool {
	//LOG
	private static final Logger LOG =Logger.getLogger(VerificationCodeTool.class);
	//verification code image width
	private static final int IMG_WIDTH=146;
	//verification code image height
	private static final int IMG_HEIGHT=30;
	//The number of interference lines
	private static final int DISTURB_LINE_SIZE = 15;
	//generate a random number
	private Random random = new Random();
	//result
	private int xyresult;
	//result random string
	private String randomString;
	//Chinese Numbers
//	private static final String [] CNUMBERS = "零,一,二,三,四,五,六,七,八,九,十".split(",");
	//零一二三四五六七八九十乘除加减
	//Here, must be java Unicode code
	private static final String CVCNUMBERS = "\u96F6\u4E00\u4E8C\u4E09\u56DB\u4E94\u516D\u4E03\u516B\u4E5D\u5341\u4E58\u9664\u52A0\u51CF";
	//Definition of drawings in the captcha characters font, font name, font style, font size
	//static final font : In Chinese characters garbled
	private final Font font = new Font("黑体", Font.BOLD, 18);
	//data operator
	private static final Map<String, Integer> OPMap = new HashMap<String, Integer>();
	
	static{
		OPMap.put("*", 11);
		OPMap.put("/", 12);
		OPMap.put("+", 13);
		OPMap.put("-", 14);
	}
	/**
	 * The generation of image verification code
	 * */
	public BufferedImage drawVerificationCodeImage(){
		//image
		BufferedImage image = new BufferedImage(IMG_WIDTH, IMG_HEIGHT, BufferedImage.TYPE_INT_RGB);
		//In memory to create a brush
		Graphics g = image.getGraphics();
		//Set the brush color
//		g.setColor(getRandomColor(200,250));
		g.setColor(Color.WHITE);
		//Fill the background color, using the current brush colour changing background color images
		//The meaning of the four parameters respectively, starting x coordinates, starting y, width, height.
		//image background
		g.fillRect(0, 0, IMG_WIDTH, IMG_HEIGHT);
		//Set the brush color
		g.setColor(getRandomColor(200,250));
		//image border
		g.drawRect(0, 0, IMG_WIDTH-2, IMG_HEIGHT-2);
		
		//Set disturb line color
 		g.setColor(getRandomColor(110, 133));
 		//Generate random interference lines
		for(int i =0;i < DISTURB_LINE_SIZE; i++){
			drawDisturbLine1(g);
			drawDisturbLine2(g);
		}
		//Generate a random number, set return data
		getRandomMathString();
		LOG.info("验证码 : "+randomString);
		LOG.info("验证码结果 : "+xyresult);
		//The generated random string used to save the system
		StringBuffer logsu = new StringBuffer();
		for(int j=0,k = randomString.length(); j < k; j++){
     int chid = 0;
     if(j==1){
       chid = OPMap.get(String.valueOf(randomString.charAt(j)));
     }else{
       chid = Integer.parseInt(String.valueOf(randomString.charAt(j)));
     }
     String ch = String.valueOf(CVCNUMBERS.charAt(chid));
     logsu.append(ch);
     drawRandomString((Graphics2D)g,ch, j);
		}
		//= ?
		drawRandomString((Graphics2D)g,"\u7B49\u4E8E\uFF1F", 3);
		logsu.append("\u7B49\u4E8E \uFF1F");
		LOG.info("汉字验证码 : "+logsu);
		randomString = logsu.toString();
		//Release the brush object
		g.dispose();
		return image;
	}
	/**
	 * Get a random string
	 * */
	private void getRandomMathString(){
		//Randomly generated number 0 to 10
		int xx = random.nextInt(10);
		int yy = random.nextInt(10);
		//save getRandomString
		StringBuilder suChinese = new StringBuilder();
			//random 0,1,2
			int Randomoperands = (int) Math.round(Math.random()*2);
			//multiplication
			if(Randomoperands ==0){
				this.xyresult = yy * xx;
//				suChinese.append(CNUMBERS[yy]);
				suChinese.append(yy);
				suChinese.append("*");
				suChinese.append(xx);
			//division, divisor cannot be zero, Be divisible
			}else if(Randomoperands ==1){
				if(!(xx==0) && yy%xx ==0){
					this.xyresult = yy/xx;
	        suChinese.append(yy);
	        suChinese.append("/");
	        suChinese.append(xx);
				}else{
					this.xyresult = yy + xx;
	        suChinese.append(yy);
	        suChinese.append("+");
	        suChinese.append(xx);
				}
			//subtraction
			}else if(Randomoperands ==2){
					this.xyresult = yy - xx;
	        suChinese.append(yy);
	        suChinese.append("-");
	        suChinese.append(xx);
			//add
			}else{
					this.xyresult = yy + xx;
	        suChinese.append(yy);
	        suChinese.append("+");
	        suChinese.append(xx);
			}
		this.randomString = suChinese.toString();
	}
	/**
	 * Draw a random string
	 * @param g Graphics
	 * @param randomString random string
	 * @param i the random number of characters
	 * */
	public void drawRandomString(Graphics2D g,String randomvcch,int i){
		//Set the string font style
		g.setFont(font);
		//Set the color string
		int rc = random.nextInt(255);
		int gc = random.nextInt(255);
		int bc = random.nextInt(255);
		g.setColor(new Color(rc, gc, bc));
		//random string
		//Set picture in the picture of the text on the x, y coordinates, random offset value
		int x = random.nextInt(3);
		int y = random.nextInt(2);
		g.translate(x, y);
		//Set the font rotation angle
		int degree = new Random().nextInt() % 15;
		//Positive point of view
		g.rotate(degree * Math.PI / 180, 5+i*25, 20);
		//Character spacing is set to 15 px
		//Using the graphics context of the current font and color rendering by the specified string for a given text.
		//The most on the left side of the baseline of the characters in the coordinate system of the graphics context (x, y) location
		//str- to draw string.x - x coordinate.y - y coordinate.
		g.drawString(randomvcch, 5+i*25, 20);
		//Reverse Angle
		g.rotate(-degree * Math.PI / 180, 5+i*25, 20);
	}
	/**
	 *Draw line interference 
	 *@param g Graphics
	 * */
	public void drawDisturbLine1(Graphics g){
		int x1 = random.nextInt(IMG_WIDTH);
		int y1 = random.nextInt(IMG_HEIGHT);
		int x2 = random.nextInt(13);
		int y2 = random.nextInt(15);
		//x1 - The first point of the x coordinate.
		//y1 - The first point of the y coordinate
		//x2 - The second point of the x coordinate.
		//y2 - The second point of the y coordinate.
		//X1 and x2 is the starting point coordinates, x2 and y2 is end coordinates.
		g.drawLine(x1, y1, x1 + x2, y1 + y2);
	}
	
	/**
	 *Draw line interference 
	 *@param g Graphics
	 * */
	public void drawDisturbLine2(Graphics g){
		int x1 = random.nextInt(IMG_WIDTH);
		int y1 = random.nextInt(IMG_HEIGHT);
		int x2 = random.nextInt(13);
		int y2 = random.nextInt(15);
		//x1 - The first point of the x coordinate.
		//y1 - The first point of the y coordinate
		//x2 - The second point of the x coordinate.
		//y2 - The second point of the y coordinate.
		//X1 and x2 is the starting point coordinates, x2 and y2 is end coordinates.
		g.drawLine(x1, y1, x1 - x2, y1 - y2);
	}
	/**
	 * For random color
	 * @param fc fc
	 * @param bc bc
	 * @return color random color
	 * */
	public Color getRandomColor(int fc,int bc){
		if(fc > 255){
			fc = 255;
		}
		if(bc > 255){
			bc = 255;
		}
		//Generate random RGB trichromatic
		int r = fc+random.nextInt(bc -fc - 16);
		int g = fc+random.nextInt(bc - fc - 14);
		int b = fc+random.nextInt(bc - fc - 18);
		return new Color(r, g, b);
	}
	
  /**
   * xyresult.<br/>
   *
   * @return the xyresult <br/>
   * 
   */
	public int getXyresult() {
		return xyresult;
	}
	
  /**
   * randomString.<br/>
   *
   * @return the randomString <br/>
   * 
   */
  public String getRandomString() {
    return randomString;
  }	
}

生产静态验证码(为了防止，加载慢，空白显示)：

package com.tsXs.fileshare.tools;
 
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
 
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.filechooser.FileSystemView;
 
import org.apache.log4j.Logger;
 
import com.tsXs.fileshare.configuration.properties.StaticConstants;
 /**
 * ClassName: ImageTool <br/>
 * Description: get BufferedImage creat image<br/>
 * Date: 2015-3-10 下午05:05:38 <br/>
 * <br/>
 * 
 * @author yptian@aliyun.com
 * 
 * first made
 * @version 1.0.0<br/>
 *
 */
public class ImageTool {
	//LOG
	private static final Logger LOG = Logger.getLogger(ImageTool.class);
	//image
  private BufferedImage image;  
  
  /**
   * createImage : out dest path for image
   * @param fileLocation dest path
   */
  private void createImage(String fileLocation) {    
    try {      
      FileOutputStream fos = new FileOutputStream(fileLocation);      
      BufferedOutputStream bos = new BufferedOutputStream(fos); 
      ImageIO.write(image, "png", bos);
//      com.sun.image.codec.jpeg.JPEGImageEncoder encoder = com.sun.image.codec.jpeg.JPEGCodec.createJPEGEncoder(bos);      
//      encoder.encode(image);      
      bos.flush();
      bos.close(); 
      LOG.info("@2"+fileLocation+"图片生成输出成功");  
    } catch (Exception e) {      
      LOG.info("@2"+fileLocation+"图片生成输出失败",e);  
    }
  }
  /**
   * createFileIconImage ：create share file list icon
   * @param destOutPath create file icon save dictory 
   */
  public void createFileIconImage(String destOutPath){
	   //get properties operate tool
	   PropertiesTool propertiesTool = PropertiesTool.getInstance(StaticConstants.SHARE_FILE_CONFGURATION_PROPERTIES_PATH);
	   //get share file root path
	   String shareFileRootPath = propertiesTool.getPropertiesValue("FileShareRootPath");
	   //root dictory
	   File rootDictory = new File(shareFileRootPath);
	   //child file list
	   File [] fileList = rootDictory.listFiles();
	   //child list files
	   File file = null;
	   if(fileList != null && fileList.length>0){
	  	 LOG.info("分享文件根目录下文件数:"+fileList.length);
	  	 for(int i = 0,j = fileList.length;i < j;i++){
	  		 String fileName = fileList[i].getName();
	  		 String fileAllName = shareFileRootPath +fileName;
	  		 file = new File(fileAllName);
	  		 //get file system icon
	  		 ImageIcon fileIcon = (ImageIcon) FileSystemView.getFileSystemView().getSystemIcon(file);
	  		 image = (BufferedImage) fileIcon.getImage();
	  		 if(image != null){
	  			 LOG.info("@1"+fileName+"文件的图标获取成功");
	  		 }
	  		 Graphics g = image.getGraphics();
	  		 g.drawImage(image, 0, 0, null);
	  		 String fileNameX = fileName.substring(0,fileName.lastIndexOf("."));
	  		 //out image to dest
	  		 createImage(destOutPath+"\\"+fileNameX+".png");
	  		 LOG.info("@3"+fileName+"文件的图标生成成功");
	  	 }
	   }
  }
  
  /**
   * creatDefaultVerificationCode ：create default verification code
   * @param destOutPath create creatDefaultVerificationCode save dictory 
   */
  public void creatDefaultVerificationCode(String destOutPath){
  	//verification code image height
  	//comment to com.tss.fileshare.tools.VerificationCodeTool 65 row,please
  	int imgwidth=146;
  	int imgheight=30;
  	int disturblinesize = 15;
  	VerificationCodeTool vcTool = new VerificationCodeTool();
  	//default verification code
		 image = new BufferedImage(imgwidth, imgheight, BufferedImage.TYPE_INT_RGB);
		Graphics g = image.getGraphics();
		g.setColor(Color.WHITE);
		g.fillRect(0, 0, 146, 30);
		g.setColor(vcTool.getRandomColor(200,250));
		g.drawRect(0, 0, imgwidth-2, imgheight-2);
		for(int i =0;i < disturblinesize; i++){
			vcTool.drawDisturbLine1(g);
			vcTool.drawDisturbLine2(g);
		}
		//玩命加载中…
		String defaultVCString = "\u73A9\u547D\u52A0\u8F7D\u4E2D\u2026";
		String dfch = null;
		for(int i = 0;i < 6;i++){
			dfch = String.valueOf(defaultVCString.charAt(i));
			vcTool.drawRandomString((Graphics2D)g, dfch, i);
		}
		LOG.info("默然验证码生成成功");
//		Graphics gvc = imagevc.getGraphics();
		createImage(destOutPath+"\\defaultverificationcode.jpeg");
  }
  /**
  * graphicsGeneration : create image
  * @param imgurl display picture url . eg:F:/imagetool/7.jpg<br/>
  * @param imageOutPathName image out path+naem .eg:F:\\imagetool\\drawimage.jpg<br/>
  * @param variableParmeterLength ; int, third parameter length.<br/>
  * @param drawString variableParmeterLength ;String [] .<br/>
  */
  public void graphicsGeneration(String imgurl,String imageOutPathName,int variableParmeterLength,String...drawString) {
    //The width of the picture
    int imageWidth = 500;  
    //The height of the picture
    int imageHeight = 400;  
    image = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB);    
    Graphics graphics = image.getGraphics();    
    graphics.setColor(Color.WHITE);  
    //drawing image
    graphics.fillRect(0, 0, imageWidth, imageHeight);    
    graphics.setColor(Color.BLACK);    
    //draw string string , left margin,top margin
    for(int i = 0,j = variableParmeterLength;i < j;i++){
    	graphics.drawString(drawString[i], 50, 10+15*i);
    }
    //draw image url
    ImageIcon imageIcon = new ImageIcon(imgurl); 
    //draw image , left margin,top margin
    //The coordinates of the top left corner as the center(x,y)[left top angle]
    //Image observer :If img is null, this method does not perform any action
    graphics.drawImage(imageIcon.getImage(), 200, 0, null); 
    createImage(imageOutPathName);  
  }
 
  public BufferedImage getImage() {
		return image;
	}
	public void setImage(BufferedImage image) {
		this.image = image;
	}
}

服务器，启动的时候，调用一次，生成默认图片到服务器“/servertempdictory/fileicon/”目录下：

       //create default verification code
       String fileIconDictory = serverPath+"\\servertempdictory\\fileicon";
        imageTool.creatDefaultVerificationCode(fileIconDictory);

生成动态验证码，并保存值到session中(此处有登录和注册的分路，这个读者可忽略，走一条既可)：

/**
   * creat verification code
   * */
  public void verificationcode(){
   //response
   HttpServletResponse response = ServletActionContext.getResponse();
   //request
   HttpServletRequest request = ServletActionContext.getRequest();
   //verification code demander
   String vCdemander = request.getParameter("vcdemander");
   try{
    //set encoding
    request.setCharacterEncoding("utf-8");
    response.setContentType("text/html;charset=utf-8");
    //Verification code tool
    VerificationCodeTool vcTool = new VerificationCodeTool();
    BufferedImage image = vcTool.drawVerificationCodeImage();
    //Verification code result
    int vcResult = vcTool.getXyresult();
    String vcValue = vcTool.getRandomString();
		//Set ban cache
	  //Cache-control : Specify the request and response following caching mechanism
	  //no-cache: Indicates a request or response message cannot cache
	  response.setHeader("Cache-Control", "no-cache");
	  //Entity header field response expiration date and time are given
	  response.setHeader("Pragma", "No-cache");
	  response.setDateHeader("Expires", 0);
	  // Set the output stream content format as image format
	  response.setContentType("image/jpeg");
	  //session
	  //true: if the session exists, it returns the session, or create a new session.
	  //false: if the session exists, it returns the session, otherwise it returns null.
	  HttpSession session=request.getSession(true); 
	  //set verificationcode to session
	  //login
	  if("userlogin".equals(vCdemander)){
		  session.setAttribute("verificationcodeuserlogin",vcResult);
	  }
	  //regiser
	  if("userregister".equals(vCdemander)){
	  	session.setAttribute("verificationcodeuserregister",vcResult);
	  }
	  //To the output stream output image
		ImageIO.write(image, "JPEG", response.getOutputStream());
		LOG.info("获取验证码成功 :\n验证码:"+vcValue+"\n验证码结果:"+vcResult);
	} catch (Exception e) {
		LOG.error("获取验证码失败",e);
	}
 }

用struts2实现，所以配置文件struts.xml：

<!-- Set whether to support dynamic method calls, true to support, false does not support. -->
	<constant name="struts.enable.DynamicMethodInvocation" value="true" />
	<!-- The suffix specified request -->
	<constant name="struts.action.extension" value="do,go,tsXs,action"></constant>
	<!-- user operation [first login server,server initialize]-->
	<package name="user" namespace="/fileshare" extends="struts-default">
		<!-- user operate ; The wildcard method call-->
		<action name="user*" class="com.tsXs.fileshare.controller.UserController" method="{1}">
			<result name="success">/view/common/message.jsp</result>
			<result name="error">/view/userLogin.jsp</result>
		</action>
	</package>

页面jsp显示代码：

<tr>
 <td width="100">
  <span class="hint">*[验证码]:只能输入数字和负号"-"</span>
 </td>
</tr>
<tr>
 <td width="100">
  <label for="userRegPassWord">验证码</label>
  	 <input type="text" id="verificationcodereg" name="verificationcodereg" tabindex="3" maxlength="3" class="t_input" value="" style="ime-mode:disabled;" οnblur="checkuserverificationcode(this);" οnkeypress="return (/[\d-]/.test(String.fromCharCode(event.keyCode)));" />
  	 <span id="usvcmsg"></span>
  	<input type="hidden" id="verificationcoderegflag" value="" />
 </td>
</tr>
<tr>
 <td width="140">
  <div id="refreshvc">
  <span οnclick="refreshvc();" style="padding-left: 49px;cursor: pointer;"><img id="verificationcodeimg" src="${pageContext.request.contextPath}/servertempdictory/fileicon/defaultverificationcode.jpeg" />
  <span style="height: 30px;width: 16px;padding-left: 4px;"><img src="image/refreshvc.png" /></span>
  <span style="font-size: 12px;color:#2c629e; width: 20px;">换一张</span>
  </span>
  </div>
 </td>
</tr>

在js中用正则，保证只能输入，最多3位，可以在数字前输入一个"-",即onkeypress保证只能输入数字和"-":

var userverificationcoderegex = /^(-{0,1}\d+){1,3}$/;
	if(userverificationcoderegex.test(userverificationcode)){.....

jsp图片效果：

js动态刷新验证码：

$(document).ready(function(){
	//load verificatino code
	refreshvc();
});
//refresh verification code
function refreshvc(){
	var path = $("#contextPath").val();
	var refreshvcurl =path+"/fileshare/userverificationcode.tsXs?vcdemander=userregister&time="+new Date();
	$("#verificationcodeimg").attr("src",refreshvcurl);
}

验证码验证：

 /**
   * checkverificationcode : check verification code equals
   */
  public void checkverificationcode(){
    //request
    HttpServletRequest request = ServletActionContext.getRequest();
    //response
    HttpServletResponse response = ServletActionContext.getResponse();
    //output stream
    PrintWriter out = null;
    //session
    HttpSession session = request.getSession();
    //verification code from client
    String vcclient = null;
    //verification code from server
    String vcserver = null;
    //verification code demander
    String vCdemander = request.getParameter("vcdemander");
    //check verification code to clien flag
    String checktoclienflag = null;
    try{
  	  //get verificationcode to session
  	//login
  	  if("userlogin".equals(vCdemander)){
  		  vcclient = request.getParameter("vclogincode");
  		  vcserver = String.valueOf(session.getAttribute("verificationcodeuserlogin"));
  	  }
  	  //regiser
  	  if("userregister".equals(vCdemander)){
      vcclient = request.getParameter("vcregcode");
      vcserver = String.valueOf(session.getAttribute("verificationcodeuserregister"));
  	  }
	    vcclient = UserController.encodingconvert(vcclient);
	    vcclient = vcclient == null ? "" : vcclient;
	    if(vcclient.equals(vcserver)){
	      checktoclienflag = "vcok";
	    }else{
	      checktoclienflag = "vcwrong";
	    }
      //set no cache,content type ,encoding
      response.setHeader("Cache-Control", "no-cache");
      response.setContentType("text/html");
      response.setCharacterEncoding("GBK");
      //output stream
      out = response.getWriter();
      out.print(checktoclienflag);
      LOG.info("验证码：vcclient: "+vcclient+"vcserver: "+vcserver+"验证顺利");
    }catch (Exception e) {
      LOG.error("vcclient: "+vcclient+"vcserver: "+vcserver+"验证失败",e);
    }finally{
      out.flush();
      out.close();
    }
  }

properties辅助类：

/**
 * Copyright (c) 2015,TravelSky. 
 * All Rights Reserved.
 * TravelSky CONFIDENTIAL
 * 
 * Project Name:filesharetss
 * Package Name:com.tss.fileshare.controller.tools
 * File Name:PropertiesFileOperation.java
 * Date:2015-2-27 下午05:30:05
 * 
 */
package com.tsXs.fileshare.tools;
 
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.Properties;
 
import org.apache.log4j.Logger;
 
/**
 * 
 * ClassName: PropertiesFileOperationTool <br/>
 * Description: inner class Properties file operation <br/>
 * Date: 2015-2-27 下午05:10:52 <br/>
 * <br/>
 * 
 * @author yptian@aliyun.com
 * 
 *     first made
 * @version 1.0.0<br/>
 * 
 */
 
public class PropertiesTool {
  // LOG
  private static final Logger LOG = Logger.getLogger(PropertiesTool.class);
  // Singleton instance
  private static PropertiesTool instance = new PropertiesTool();
  
  private static Properties properties;
  /**
   * 
   * Creates a new Singleton instance of PropertiesFileOperation.<br/>
   */
  private PropertiesTool() {
    
  }
  /**
   * getInstance :get properties object 
   * @param propertiesFilePathName properties file path and name
   * @return
   */
  public static PropertiesTool getInstance(String propertiesFilePathName){
    properties = loadPropertiesFile(propertiesFilePathName);
    return instance;
  }
  /**
   * 
   * loadPropertiesFile:Load properties file by path and name<br/>
   * @param propertiesFilePathName path and name of properties file <br/>
   * @return properties properties 
   */
  private static Properties loadPropertiesFile(String propertiesFilePathName) {
    Properties properties = new Properties();
    InputStream isLoad = PropertiesTool.class.getClassLoader().getResourceAsStream(propertiesFilePathName);
    try {
      // loader properties
      properties.load(isLoad);
    } catch (IOException e) {
      LOG.error(propertiesFilePathName + " properties file read failure", e);
    } finally {
			try {
				isLoad.close();
			} catch (IOException e) {
				LOG.error("properties file stream close error",e);
			}
    }
    return properties;
  }
  /**
   * *
   * getPropertiesValue:Get properties value by key <br/>
   * @param key properties key <br/>
   * @return value properties value
   */
  public String getPropertiesValue(String key) {
    return properties.getProperty(key);
  }
  
  
  public static String getInstanceByServerRealPathOfValue(String propertiesFileServerRealPathName,String key){
  	String pValue = null;
  	try {
				InputStream isrLoad = new FileInputStream(propertiesFileServerRealPathName);
				properties.load(isrLoad);
				isrLoad.close();
				pValue = properties.getProperty(key);
			} catch (IOException e) {
				LOG.error("Failed to get the value under the server of the properties file",e);
			}
  	return pValue;
  }
  /**
   * 
   * getProperties:Get properties by key and value <br/>
   * @param key properties key <br/>
   * @param value properties value
   */
  public void setProperties(String filePath,String key,String value){
  	try {
  	  InputStream is = new FileInputStream(filePath);
  	  OutputStream os = new FileOutputStream(filePath);
			properties.load(is);
			properties.setProperty(key, value);
			properties.store(os, null);
			os.flush();
			is.close();
			os.close();
		} catch (IOException e) {
			LOG.error("properties file stream close error",e);
		}
  }
  
  /**
   * 
   * alterProperties:alter properties by key and value <br/>
   * @param key properties key <br/>
   * @param value properties value
   */
  public void alterProperties(String filePath,String key,String value){
    try{
      InputStream is = new FileInputStream(filePath);
      OutputStream os = new FileOutputStream(filePath);
      properties.load(is);
      properties.remove(key);
      properties.setProperty(key, value);
      properties.store(os, null);
			os.flush();
			is.close();
			os.close();
    } catch (IOException e) {
      LOG.error("properties file stream close error",e);
    }
  }
  /**
   * 
   * getAllProperties:Read the properties of all the information <br/>
   * @return properties information
   */
  @SuppressWarnings("rawtypes")
	public String getAllProperties(){
		Enumeration en = properties.propertyNames();
    StringBuffer sf = new StringBuffer();
    while (en.hasMoreElements()) {
      String key = (String) en.nextElement();
      String value = properties.getProperty (key);
      sf.append("\n"+key);
      sf.append("=");
      value = value.replace(":", "\\:");
      sf.append(value);
    }
    return sf.toString();
  }
 
}

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