我先讲讲我是怎么实现站外提交留言到一个网站的程序。
这个网站的留言版大致如下:
我一看这种简单的4位数字验证码,马上就感觉到有戏了。直觉告诉我让电脑来识别这些图片验证码据对简单o(∩_∩)o...
首先我马上在这个页面用右键菜单看源代码
知道验证码获取页面后 你可以直接用 http://www.XXXX.com/imgchk/validatecode.asp 这样去访问你会发现你打开的就是一个验证码图片。
对的其实返回的就是图片文件的2进制流而已。接着先用右键保存一张验证码的图片。因为要开始分析这张图片了,什么用什么工具?PhotoShop????不用就一般的画图工具就可以了。我们要搞清楚的是 这几个数字分别占几个像素就可以了。
可以看出 一个数字5*9 也就是45个像素。恩 这就可以了 另外我们可以看出 默认区域就是白色
(姑且说是白色因为我们肉眼看就是白色)
那么我的程序识别原理就是固定去扫描这45个像素点。看每个点的颜色是不是和默认的颜色一致
一致的话就标记为0 ,不一致就标记为1 。
如一个数子是2 那么我的程序扫描出来的图像就应该是:
011110
100001
000001
000001
000010
000100
001000
010000
100000
111111
如果一个数字是7那么扫描出来的图像就是:
111111
100001
000010
000010
000100
000100
001000
001000
010000
010000
恩,就这么简单呵呵。下面给出图像 扫描的java类 (不好意思,在我会的语言里面除开java就剩sql了)
package com.util;
// ~--- JDK imports ------------------------------------------------------------
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
import java.awt. * ;
import java.awt.image. * ;
import java.io. * ;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.net. * ;
import javax.imageio. * ;
import javax.imageio.ImageIO;
/**
* 登陆验证图片转换为数字
*
*
* @version 1.0, 08/04/20
* @author 张健滢
*/
public class ImgIdent {
// 数字字符比特表
private final long[][] NUMERIC = {
{ 512104545, 562436190 }, // '0'
{ 148931080, 136348222 }, // '1'
{ 511971394, 69273663 }, // '2'
{ 511971406, 17045598 }, // '3'
{ 35168914, 586948743 }, // '4'
{ 1065486398, 17045598 }, // '5'
{ 239208494, 830871646 }, // '6'
{ 1065623684, 69239824 }, // '7'
{ 512104542, 562436190 }, // '8'
{ 512104547, 486805660 }
}; // '9'
// 字框高
private int intCharHeight = 10;
// 字框横向间隙
private int intCharSpaceH = 5;
// 字框纵向间隙
private int intCharSpaceY = 1;
// 字框宽
private int intCharWidth = 5;
private int IntImgHeight;
private BufferedImage img;
private int intBgColor;
private int intCharColor;
private int intImgWith;
private int intMaxX;
private int intMaxY;
private int intMinX;
private int intMinY;
// 座标原点
private Point pOrigin;
private String strNum;
/**
* Constructs ...
*
*
* @param img
*
* @throws IOException
*/
public ImgIdent(BufferedImage img) throws IOException {
this.img = img;
init();
}
/**
* 构造函数
* @param file 本地文件
* @throws IOException
*/
public ImgIdent(File file) throws IOException {
img = ImageIO.read(file);
init();
}
/**
* 构造函数
* @param url 远程文件
* @throws IOException
*/
public ImgIdent(URL url) throws IOException {
img = ImageIO.read(url);
init();
}
/**
* 类初始工作
*/
private void init() {
// 得到图象的长度和宽度
intImgWith = img.getWidth();
IntImgHeight = img.getHeight();
// 得到图象的背景颜色
intBgColor = img.getRGB(7, 4);
// System.out.println(intBgColor);
// 初始化图象原点座标
pOrigin = new Point(0, 0);
}
/**
* Method description
*
*/
private void getBaseInfo() {
System.out.println(intBgColor + "|" + intCharColor);
System.out.println(intMinX + "|" + intMinY + "|" + intMaxX + "|" + intMaxY);
}
/**
* 得到字符的左上右下点座标
* @param intNo int 第n个字符
* @return int[]
*/
private Point[] getCharRange(int intNo) {
// 左上右下点座标
Point pTopLeft = new Point(0, 0);
Point pBottomRight = new Point(0, 0);
// 左上点
pTopLeft.x = pOrigin.x + intCharWidth * (intNo - 1) + intCharSpaceH * (intNo - 1);
pTopLeft.y = pOrigin.y;
// 右下点
pBottomRight.x = 1 + pOrigin.x + intCharWidth * intNo + intCharSpaceH * (intNo - 1) - 1;
pBottomRight.y = pOrigin.y + intCharHeight - 1;
return new Point[] { pTopLeft, pBottomRight };
}
/**
* 与背景颜色比较返回相应的字符
* @param x int 横座标
* @param y int 纵座标
* @return char 返回字符
*/
private char getBit(int x, int y) {
int intCurtColor;
intCurtColor = img.getRGB(x, y);
//System.out.println("[" + x + "," + y + "]" + intCurtColor + "==" + intBgColor + "==>" + (Math.abs(intCurtColor) >7308252));
// return (Math.abs(intCurtColor) >= 5689325)
// ? '0'
// : '1';
return (intCurtColor == intBgColor)
? '0'
: '1';
// 5689325 6008535
}
/**
* 得到第n个字符对应的字符串
* @param intNo int 第n个字符
* @return String 代表字符位的串
*/
private String getCharString(int intNo) {
// 本字符的左上右下点座标
Point[] p = getCharRange(intNo);
Point pTopLeft = p[0];
Point pBottomRight = p[1];
// 换算边界值
int intX1, intY1, intX2, intY2;
intX1 = pTopLeft.x;
intY1 = pTopLeft.y;
intX2 = pBottomRight.x;
intY2 = pBottomRight.y;
// System.out.println("intX1=" + intX1);
// System.out.println("intY1=" + intY1);
// System.out.println("intX2=" + intX2);
// System.out.println("intY2=" + intY2);
// 在边界内循环取象素
int i, j;
String strChar = "";
for (i = intY1; i <= intY2; i++) {
for (j = intX1; j <= intX2; j++) {
System.out.print(getBit(j, i));
strChar = strChar + getBit(j, i);
}
System.out.println();
}
System.out.println();
return strChar;
}
/**
* 得到第n个字符对应数值
* @param intNo int 第n个字符
* @return int 对应数值
*/
public int getNum(int intNo) {
// 取得位字符串
String strChar = getCharString(intNo);
// System.out.println(intNo+"=="+strChar);
// 取得串高位串和低位串
String strCharHigh = strChar.substring(0, strChar.length() / 2);
String strCharLow = strChar.substring(strChar.length() / 2);
// 计算高位和低位值
long lCharHigh = Long.parseLong(strCharHigh, 2);
System.out.println(lCharHigh);
long lCharLow = Long.parseLong(strCharLow, 2);
System.out.println(lCharLow);
// 在数字中循环比较
int intNum = '*';
for (int i = 0; i <= 9; i++) {
if ((lCharHigh == NUMERIC[i][0]) && (lCharLow == NUMERIC[i][1])) {
intNum = i;
break;
} else {
if ((lCharHigh == 834533329) && (lCharLow == 242870177)) {
intNum = 6;
} // 834533329 242870177
else {
intNum = 1;
} // 默认为1 低位为 937393609 937393601
}
}
return intNum;
}
/**
* 保存图片
*
*
* @param length
*
* @return
*/
public String getValidatecode(int length) {
String strNum = "";
for (int i = 1; i <= length; i++) {
synchronized (this) {
strNum += String.valueOf(getNum(i));
}
}
return strNum;
}
/**
* Method description
*
*
* @param iag
* @param savePath
*
* @throws FileNotFoundException
* @throws IOException
*/
public void saveJPEG(BufferedImage iag, String savePath) throws FileNotFoundException, IOException {
OutputStream jos = new FileOutputStream(savePath);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(jos);
JPEGEncodeParam jpegEP = JPEGCodec.getDefaultJPEGEncodeParam(iag);
jpegEP.setQuality((float) 1, true);
encoder.encode(iag, jpegEP);
jos.flush();
jos.close();
}
}
恩这样数字是可以识别出来了,可以我要怎么完成提交那块的工作呢?好在Apache已经为我做完了。我用了
HttpClient这样一个模拟Http协议的小工具包。我只要往那个 Add_MSG.asp里面提交就完了。
package
com.util;
// ~--- non-JDK imports --------------------------------------------------------
import org.apache.commons.httpclient. * ;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.params.HttpClientParams;
import org.apache.commons.httpclient.params.HttpMethodParams;
// ~--- JDK imports ------------------------------------------------------------
import java.awt.image.BufferedImage;
import java.io.InputStream;
import javax.imageio.ImageIO;
public class MyHttpClient {
/**
* Method description
*
*
* @param title 留言标题
* @param name 留言者
* @param Content 内容
* @param proIP 代理IP
* @param port 代理端口
* @param usePro 是否使用代理
*/
public synchronized void doSomeThing(String title, String name, String Content, String proIP, int port,
boolean usePro) {
// 构造HttpClient的实例
HttpClient httpClient = new HttpClient();
HttpClientParams clientParams = new HttpClientParams();
// 隐藏自己请求相关的信息
clientParams.setParameter("http.useragent", "Mozilla/4.0 (compatible; FIREFOX 9.0; IBM AIX 5)");
// httpClient.getHttpConnectionManager().getParams().setSoTimeout(30 * 1000);
clientParams.setHttpElementCharset("GBK");
HttpState httpState = new HttpState();
httpClient.setParams(clientParams);
httpClient.getParams().setParameter(HttpClientParams.HTTP_CONTENT_CHARSET, "GBK");
httpClient.setState(httpState);
clientParams.setVersion(HttpVersion.HTTP_1_1);
// httpClient.getHostConfiguration().setProxy("148.233.159.58", 3128);
if (usePro) // 使用代理
{
httpClient.getHostConfiguration().setProxy(proIP, port);
}
// 创建GET方法的实例
GetMethod getMethod = new GetMethod("http://www.XXXcom/Guestbook/imgchk/validatecode.asp");
// 使用系统提供的默认的恢复策略
getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler());
try {
// 执行getMethod
int statusCode = httpClient.executeMethod(getMethod);
// System.out.println(statusCode);
if (statusCode != HttpStatus.SC_OK) {
System.err.println("Method failed: " + getMethod.getStatusLine());
} // 读取内容
InputStream inStream = getMethod.getResponseBodyAsStream();
// 处理内容
// System.out.println(new String(responseBody));
BufferedImage iag = ImageIO.read(inStream);
ImgIdent imgIdent = new ImgIdent(iag);
// imgIdent.saveJPEG(iag, "C:/ddd.jpg");
String validate = imgIdent.getValidatecode(4);
System.out.println(validate);
PostMethod method = new PostMethod("http://www.XXX.com/Guestbook/add_msg.asp");
String connect = Content;
String Title = title;
method.setParameter("subject", Title);
method.setParameter("g_name", name);
method.setParameter("companyname", "");
method.setParameter("mail", "");
method.setParameter("homepageurl", "http://");
method.setParameter("pic", "p5.gif");
method.setParameter("validatecode", validate);
method.setParameter("content", connect);
// if (todo) {
int code = httpClient.executeMethod(method);
// String Stringresponse = new String(method.getResponseBodyAsString().getBytes("8859_1"));
// 打印返回的信息
// System.out.println(Stringresponse);
// }
method.releaseConnection();
// System.out.println(iag.getHeight());
// System.out.println(iag.getWidth());
// //背景 颜色
// intBgColor = iag.getRGB(38, 0);
// System.out.println("intBgColor=" + intBgColor);
//
//
// intBgColor = iag.getRGB(0, 0);
// System.out.println("intBgColor=" + intBgColor);
} catch (Exception e) {
// 发生网络异常
e.printStackTrace();
} finally {}
// 释放连接 getMethod.releaseConnection(); }
getMethod.releaseConnection();
}
}
// ~--- non-JDK imports --------------------------------------------------------
import org.apache.commons.httpclient. * ;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.params.HttpClientParams;
import org.apache.commons.httpclient.params.HttpMethodParams;
// ~--- JDK imports ------------------------------------------------------------
import java.awt.image.BufferedImage;
import java.io.InputStream;
import javax.imageio.ImageIO;
public class MyHttpClient {
/**
* Method description
*
*
* @param title 留言标题
* @param name 留言者
* @param Content 内容
* @param proIP 代理IP
* @param port 代理端口
* @param usePro 是否使用代理
*/
public synchronized void doSomeThing(String title, String name, String Content, String proIP, int port,
boolean usePro) {
// 构造HttpClient的实例
HttpClient httpClient = new HttpClient();
HttpClientParams clientParams = new HttpClientParams();
// 隐藏自己请求相关的信息
clientParams.setParameter("http.useragent", "Mozilla/4.0 (compatible; FIREFOX 9.0; IBM AIX 5)");
// httpClient.getHttpConnectionManager().getParams().setSoTimeout(30 * 1000);
clientParams.setHttpElementCharset("GBK");
HttpState httpState = new HttpState();
httpClient.setParams(clientParams);
httpClient.getParams().setParameter(HttpClientParams.HTTP_CONTENT_CHARSET, "GBK");
httpClient.setState(httpState);
clientParams.setVersion(HttpVersion.HTTP_1_1);
// httpClient.getHostConfiguration().setProxy("148.233.159.58", 3128);
if (usePro) // 使用代理
{
httpClient.getHostConfiguration().setProxy(proIP, port);
}
// 创建GET方法的实例
GetMethod getMethod = new GetMethod("http://www.XXXcom/Guestbook/imgchk/validatecode.asp");
// 使用系统提供的默认的恢复策略
getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler());
try {
// 执行getMethod
int statusCode = httpClient.executeMethod(getMethod);
// System.out.println(statusCode);
if (statusCode != HttpStatus.SC_OK) {
System.err.println("Method failed: " + getMethod.getStatusLine());
} // 读取内容
InputStream inStream = getMethod.getResponseBodyAsStream();
// 处理内容
// System.out.println(new String(responseBody));
BufferedImage iag = ImageIO.read(inStream);
ImgIdent imgIdent = new ImgIdent(iag);
// imgIdent.saveJPEG(iag, "C:/ddd.jpg");
String validate = imgIdent.getValidatecode(4);
System.out.println(validate);
PostMethod method = new PostMethod("http://www.XXX.com/Guestbook/add_msg.asp");
String connect = Content;
String Title = title;
method.setParameter("subject", Title);
method.setParameter("g_name", name);
method.setParameter("companyname", "");
method.setParameter("mail", "");
method.setParameter("homepageurl", "http://");
method.setParameter("pic", "p5.gif");
method.setParameter("validatecode", validate);
method.setParameter("content", connect);
// if (todo) {
int code = httpClient.executeMethod(method);
// String Stringresponse = new String(method.getResponseBodyAsString().getBytes("8859_1"));
// 打印返回的信息
// System.out.println(Stringresponse);
// }
method.releaseConnection();
// System.out.println(iag.getHeight());
// System.out.println(iag.getWidth());
// //背景 颜色
// intBgColor = iag.getRGB(38, 0);
// System.out.println("intBgColor=" + intBgColor);
//
//
// intBgColor = iag.getRGB(0, 0);
// System.out.println("intBgColor=" + intBgColor);
} catch (Exception e) {
// 发生网络异常
e.printStackTrace();
} finally {}
// 释放连接 getMethod.releaseConnection(); }
getMethod.releaseConnection();
}
}
恩 就这样了,最后结合SAF整成这样了。什么?为什么不用SWT?想过了SWING才是王道o(∩_∩)o...