Java 腾讯验证码平台使用实例

主要就是官方的这个图：

前端调用接口，得到腾讯发过来的几个数据，前端把这几个数据给后端，后端拿到这些数据后传给腾讯，让其判断是否正常，以及其他属性。

程序运行截图如下：

点击登录后，拖动正确进行跳转，拖动错误就重新输入

看看后台的打印：

这个是腾讯反馈的数据，response为1说明是正常，风险等级为0

程序结构如下：

源码如下：

LoginServlet.java

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.net.URLEncoder;
 
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
 
 
@WebServlet(value = "/login")
public class LoginServlet extends HttpServlet{
 
 
    private static final String APP_ID = "xxxxxxxxxx";
    private static final String APP_SECRET = "xxxxxxxxxx**";
    private static final String VERIFY_URI = "https://ssl.captcha.qq.com/ticket/verify?aid=%s&AppSecretKey=%s&Ticket=%s&Randstr=%s&UserIP=%s";
 
    public static int verifyTicket(String ticket, String rand, String userIp) {
      CloseableHttpClient httpclient = HttpClients.createDefault();
      HttpGet httpGet;
      CloseableHttpResponse response = null;
      try {
        httpGet = new HttpGet(String.format(VERIFY_URI,
            APP_ID,
            APP_SECRET,
            URLEncoder.encode(ticket, "UTF-8"),
            URLEncoder.encode(rand, "UTF-8"),
            URLEncoder.encode(userIp, "UTF-8")
        ));
        response = httpclient.execute(httpGet);
 
        HttpEntity entity = response.getEntity();
        if (entity != null) {
          String res = EntityUtils.toString(entity);
          System.out.println(res); // 临时输出
 
          JSONObject result = JSON.parseObject(res);
          // 返回码
          int code = result.getInteger("response");
          // 恶意等级
          int evilLevel = result.getInteger("evil_level");
 
          // 验证成功
          if (code == 1) return evilLevel;
        }
      } catch (java.io.IOException e) {
        // 忽略
      } finally {
        try {
          response.close();
        } catch (Exception ignore) {
        }
      }
 
      return -1;
    }
 
 
  public void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
 
    this.doPost(request, response);
  }
 
  protected void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
 
    //验证
    String ticket = request.getParameter("Ticket");
    String randstr = request.getParameter("Randstr");
    String userIP = request.getRemoteAddr();
    verifyTicket(ticket, randstr, userIP);
 
 
 
    response.sendRedirect("success.jsp");
  }
}

web.xml

<!DOCTYPE web-app PUBLIC
    "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd" >
 
<web-app>
  <display-name>Archetype Created Web Application</display-name>
</web-app>

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <title>qq</title>
  <script src="https://ssl.captcha.qq.com/TCaptcha.js"></script>
  <script type="text/javascript">
    function vail(){
      var vailCode = new TencentCaptcha('2047017221', function(res){
        if(res.ret == 0){
          var form = document.getElementById("form1");
          var ticketInput = document.getElementById("Ticket");
          var randstrInput = document.getElementById("Randstr");
          ticketInput.value = res.ticket;
          randstrInput.value = res.randstr;
          // console.log("res.ticket:" + res.ticket);
          // console.log("res.randstr:" + res.randstr);
          form.submit();
        }
        else{
          alert("验证出错！");
        }
      });
      vailCode.show();
    }
  </script>
</head>
<body>
<form id="form1" method="post" action="login">
  <div>
    <input id="Ticket" name="Ticket" type="hidden" value="">
    <input id="Randstr" name="Randstr" type="hidden" value="">
    <input type="button" value="登录" id="btnOK" οnclick="vail()" />
  </div>
</form>
</body>
</html>

success.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
  <title>Title</title>
</head>
<body>
<h1>SUCCESS</h1>
</body>
</html>

porn.xml

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
 
  <groupId>org.example</groupId>
  <artifactId>wxDemo</artifactId>
  <version>1.0-SNAPSHOT</version>
 
  <packaging>war</packaging>
 
  <dependencies>
 
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.62</version>
    </dependency>
 
    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpcore</artifactId>
      <version>4.4.5</version>
    </dependency>
 
    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpclient</artifactId>
      <version>4.5.11</version>
    </dependency>
 
  </dependencies>
 
 
</project>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持呐喊教程。

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