java验证码识别代码(java验证码识别算法)

2023-08-21 08:17:42LanceLee技术分享113

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内容导航：//随机生成验证码的颜色和字符for(int i=0,//获得一张图片BufferedImage image=new BufferedImage(width,Color getRandColor(int fc,int y = (height)
java验证码怎么做
谁帮我写出验证码验证的代码（java脚本）要有注释的谢谢
用java怎么制作验证码
{title4}

{image}

一、java验证码怎么做

下返弊局面是实现验证码漏让中，最难的一块----画图片，我这个支持中文验证码，我把代码贴上，如果要整个项目的话，我发给你。
package INGCODE;

import on;
import er;

import ception;
import et;
import etRequest;
import etResponse;

import .;
import .;
import .;
import .;
import .*;

import ingUtils;

public class getimg extends HttpServlet {

/

/
private static final long serialVersionUID = 1L;

/
Constructor of the object.
/
public getimg() {
super();
}

/
Destruction of the servlet.

/
public void destroy() {
(); // Just puts "destroy" string in log
// Put your code here
}

/
The doGet method of the servlet.

This method is called when a form has its tag value method equals to get.

@param request the request send by the client to the server
@param response the response send by the server to the client
@throws ServletException if an error occurred
@throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

("Pragma","No-cache");
("Cache-Control","no-cache");
ader("Expires", 0);
// 定义图片长度和宽度
int width=176, height=30;
// 创建内存图像
BufferedImage image = new BufferedImage(width, height, _INT_RGB);
Graphics g = cs();
Random random = new Random();
// 验证码图形显示为数字和英文字母
(getRandColor(200,250));
(0, 0, width, height);
(new Font("Times New Roman"卜兆,,18));
(new Color(255,255,255));
(0,0,width-1,height-1);
(getRandColor(160,200));
for (int i=0;i<155;i++)
{

int x = (width);
int y = (height);
int xl = (12);
int yl = (12);
(x,y,x+xl,y+yl);
}
// 随机获取四位字母或数字型字符
String s = (4,false,true);

(new Color(20+(110),20+(110),20+(110)));
// 将字符画到图片上
g(s,6,20);

/ 显示汉字验证码
// 设置备选汉字，剔除一些不雅的汉字
String base = "\u7684\u4e00\u4e86\u662f\u6211\u4e0d\u5728\u4eba\u4eec\u6709\u6765\u4ed6\u8fd9\u4e0a\u7740\u4e2a\u5730\u5230\u5927\u91cc\u8bf4\u5c31\u53bb\u5b50\u5f97\u4e5f\u548c\u90a3\u8981\u4e0b\u770b\u5929\u65f6\u8fc7\u51fa\u5c0f\u4e48\u8d77\u4f60\u90fd\u628a\u597d\u8fd8\u591a\u6ca1\u4e3a\u53c8\u53ef\u5bb6\u5b66\u53ea\u4ee5\u4e3b\u4f1a\u6837\u5e74\u60f3\u751f\u540c\u8001\u4e2d\u5341\u4ece\u81ea\u9762\u524d\u5934\u9053\u5b83\u540e\u7136\u8d70\u5f88\u50cf\u89c1\u4e24\u7528\u5979\u56fd\u52a8\u8fdb\u6210\u56de\u4ec0\u8fb9\u4f5c\u5bf9\u5f00\u800c\u5df1\u4e9b\u73b0\u5c71\u6c11\u5019\u7ecf\u53d1\u5de5\u5411\u4e8b\u547d\u7ed9\u957f\u6c34\u51e0\u4e49\u4e09\u58f0\u4e8e\u9ad8\u624b\u77e5\u7406\u773c\u5fd7\u70b9\u5fc3\u6218\u4e8c\u95ee\u4f46\u8eab\u65b9\u5b9e\u5403\u505a\u53eb\u5f53\u4f4f\u542c\u9769\u6253\u5462\u771f\u5168\u624d\u56db\u5df2\u6240\u654c\u4e4b\u6700\u5149\u4ea7\u60c5\u8def\u5206\u603b\u6761\u767d\u8bdd\u4e1c\u5e2d\u6b21\u4eb2\u5982\u88ab\u82b1\u53e3\u653e\u513f\u5e38\u6c14\u4e94\u7b2c\u4f7f\u5199\u519b\u5427\u6587\u8fd0\u518d\u679c\u600e\u5b9a\u8bb8\u5feb\u660e\u884c\u56e0\u522b\u98de\u5916\u6811\u7269\u6d3b\u90e8\u95e8\u65e0\u5f80\u8239\u671b\u65b0\u5e26\u961f\u5148\u529b\u5b8c\u5374\u7ad9\u4ee3\u5458\u673a\u66f4\u4e5d\u60a8\u6bcf\u98ce\u7ea7\u8ddf\u7b11\u554a\u5b69\u4e07\u5c11\u76f4\u610f\u591c\u6bd4\u9636\u8fde\u8f66\u91cd\u4fbf\u6597\u9a6c\u54ea\u5316\u592a\u6307\u53d8\u793e\u4f3c\u58eb\u8005\u5e72\u77f3\u6ee1\u65e5\u51b3\u767e\u539f\u62ff\u7fa4\u7a76\u5404\u516d\u672c\u601d\u89e3\u7acb\u6cb3\u6751\u516b\u96be\u65e9\u8bba\u5417\u6839\u5171\u8ba9\u76f8\u7814\u4eca\u5176\u4e66\u5750\u63a5\u5e94\u5173\u4fe1\u89c9\u6b65\u53cd\u5904\u8bb0\u5c06\u5343\u627e\u4e89\u9886\u6216\u5e08\u7ed3\u5757\u8dd1\u8c01\u8349\u8d8a\u5b57\u52a0\u811a\u7d27\u7231\u7b49\u4e60\u9635\u6015\u6708\u9752\u534a\u706b\u6cd5\u9898\u5efa\u8d76\u4f4d\u5531\u6d77\u4e03\u5973\u4efb\u4ef6\u611f\u51c6\u5f20\u56e2\u5c4b\u79bb\u8272\u8138\u7247\u79d1\u5012\u775b\u5229\u4e16\u521a\u4e14\u7531\u9001\u5207\u661f\u5bfc\u665a\u8868\u591f\u6574\u8ba4\u54cd\u96ea\u6d41\u672a\u573a\u8be5\u5e76\u5e95\u6df1\u523b\u5e73\u4f1f\u5fd9\u63d0\u786e\u8fd1\u4eae\u8f7b\u8bb2\u519c\u53e4\u9ed1\u544a\u754c\u62c9\u540d\u5440\u571f\u6e05\u9633\u7167\u529e\u53f2\u6539\u5386\u8f6c\u753b\u9020\u5634\u6b64\u6cbb\u5317\u5fc5\u670d\u96e8\u7a7f\u5185\u8bc6\u9a8c\u4f20\u4e1a\u83dc\u722c\u7761\u5174\u5f62\u91cf\u54b1\u89c2\u82e6\u4f53\u4f17\u901a\u51b2\u5408\u7834\u53cb\u5ea6\u672f\u996d\u516c\u65c1\u623f\u6781\u5357\u67aa\u8bfb\u6c99\u5c81\u7ebf\u91ce\u575a\u7a7a\u6536\u7b97\u81f3\u653f\u57ce\u52b3\u843d\u94b1\u7279\u56f4\u5f1f\u80dc\u6559\u70ed\u5c55\u5305\u6b4c\u7c7b\u6e10\u5f3a\u6570\u4e61\u547c\u6027\u97f3\u7b54\u54e5\u9645\u65e7\u795e\u5ea7\u7ae0\u5e2e\u5566\u53d7\u7cfb\u4ee4\u8df3\u975e\u4f55\u725b\u53d6\u5165\u5cb8\u6562\u6389\u5ffd\u79cd\u88c5\u9876\u6025\u6797\u505c\u606f\u53e5\u533a\u8863\u822c\u62a5\u53f6\u538b\u6162\u53d4\u80cc\u7ec6";
// 备选汉字的长度
int length = ();
// 设定图像背景色(因为是做背景，所以偏淡)
(getRandColor(200, 250));
(0, 0, width, height);
// 备选字体
String[] fontTypes = {"\u5b8b\u4f53", "\u65b0\u5b8b\u4f53", "\u9ed1\u4f53", "\u6977\u4f53", "\u96b6\u4e66"};
int fontTypesLength = ;
// 在图片背景上增加噪点
(getRandColor(160, 200));
(new Font("Times New Roman", , 14));
for (int i = 0; i < 6; i++) {
g("********", 0, 5 * (i + 2));
}

String s = "";
for (int i = 0; i < 6; i++) {
int start = (length);
String rand = (start, start + 1);
s += rand;
//设置字体的颜色
(getRandColor(10, 150));
//设置字体
(new Font(fontTypes[(fontTypesLength)], , 18 + (6)));
//将此汉字画到图片上
g(rand, 24 * i + 10 + (8), 24);
}

/
HttpSession session=n();
ute("rand",s);
();
(image, "JPEG", Stream());
}
Color getRandColor(int fc,int bc){
Random random = new Random();
if(fc>255) fc=255;
if(bc>255) bc=255;
int r=fc+(bc-fc);
int g=fc+(bc-fc);
int b=fc+(bc-fc);
return new Color(r,g,b);
}
/
The doPost method of the servlet.

This method is called when a form has its tag value method equals to post.

@param request the request send by the client to the server
@param response the response send by the server to the client
@throws ServletException if an error occurred
@throws IOException if an error occurred
/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

tType("text/html");
PrintWriter out = ();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
("");
(" A Servlet");
(" ");
(" This is ");
(());
(", using the POST method");
(" ");
("");
();
();
}

/
Initialization of the servlet.

@throws ServletException if an error occure
/
public void init() throws ServletException {
// Put your code here
}

}

二、谁帮我写出验证码验证的代码（java脚本）要有注释的谢谢

谁帮我写出验证码验证的代码(java脚本)要有注释的谢谢<%@ page language="java" contentType="text/html; charset=GBK" pageEncoding="GBK" import="., ., ., ., .*"%><% String s = ""; int intCount = 0; intCount = (new Random()).nextInt(9999);// if (intCount < 1000) intCount += 1000; s = intCount + ""; // 保存入session,用于与用户的输入进行比较. // 注意比较完之后清除session. ute("validateCode", s); tType("image/gif"); BufferedImage image = new BufferedImage(35, 14, _INT_RGB); Graphics gra = cs(); // 设置背景色 (); (1, 1, 33, 12); // 设置字体色 (); (new Font("宋体", , 12)); // 输出数字 char c; for (int i = 0; i < 4; i++) { c = (i); g(c + "", i * 7 + 4, 11); // 7为宽度，11为上下高度位置 } OutputStream toClient = Stream(); JPEGImageEncoder encoder = GEncoder(toClient); (image); (); (); out = ();%>

三、用java怎么制作验证码

原理:1.随机生成4个数字用到了Random类2.对这4个数字设置字体格式用千setFont方法3.改变字体颜色用setColor 然后随机生成颜色代码如下packa 下差权止员代门亲导 ge s1;import r;import ja;import java..G *来自 raphics;import .i 承杨距好故 360问答 redImage;import 虽现师 立该少没色象握激见间 Exception;import java.i打并er;import ;import 构运 ;import 甲一答买若川备思兰通义 ;import javax.sletException;import 造皇起批笑第量音概五tpServlet;import 兴充都义燃太烈宜足它. 谈 HttpServletRequest;import javax.etResponse;import javax.on;public class GetImage ext烧临展刘首急酸段加米ends HttpServlet {public void doGet(HttpServletRequest req 动居进航连急法素哥仅 uest, HttpServletResponse r 帮 esponse)th 均设海茶浓曲适时学 rows ServletException, IOException { (re 试统装防 quest, response);}public void doPost(HttpSer 面 vletRequest request, HttpServletResponse response)throws ServletException, IOException {//发送图片不能够添加这2行代码//tType("text/html;charset=UTF-8");//terEncoding("UTF-8");int width=100;int height=50;//获得一张图片BufferedImage image=new BufferedImage(width, height, _INT_RGB);Graphics g=cs();();(1, 1, width-2, height-2);(new Font("宋体",,30));Random random=new Random();//填充的字符串String str="";//缓存生成的验证码StringBuffer stringbuffer=new StringBuffer();//随机生成验证码的颜色和字符for(int i=0;i<4;i++){ //设置随机颜色(new Color((256), (256), (256))); int index=(62);//这里的62就是从填充字符段中随意选取一个位置String str1=(index,index+1);g(str1, 20*i, 30);//x,y数值设置太小会显示不出来(str1);}//将生成的验证码存到服务器n().setAttribute("checkcode", ());//key和value//将图片发送给浏览器(image, "jpg", Stream());}}用户登录界面代码package s1;import on;import er;import ception;import et;import etRequest;import etResponse;import on;public class Login extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {tType("text/html;charset=UTF-8");// 设置服务器发送给浏览器的编码方式terEncoding("UTF-8"); // 客户端向服务器提交的数据的解码方式// 获得用户提交的数据String checkcode = ter("checkcode");(checkcode);// 判断输入的验证码是不是符合HttpSession session = n();// session是存放数据的地方String str = (String) ute("checkcode");if (str != null) {if (IgnoreCase(str) == 0) // 验证码忽略大小写().println("验证码输入正确");().println("验证码输入错误");}else ().println("验证码失效");// 使用完的验证码信息要删除,返回原页面再输一次,验证码就失效了ribute("checkcode");}}

四、{title4}

{content4}

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标签：java验证码识别代码 java验证码识别算法

一、java验证码怎么做

二 、谁帮我写出验证码验证的代码（java脚本）要有注释的 谢谢

三 、用java怎么制作验证码

四、{title4}

一、java验证码怎么做

二、谁帮我写出验证码验证的代码（java脚本）要有注释的谢谢

三、用java怎么制作验证码

四、{title4}