1. 浏览器请求
2. 代码请求
import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;import .HttpURLConnection;import .URL;public class CookieUtil {/**** @param vrifyCodeUrl 验证码url* @return cookie*/public static String getCookie(String vrifyCodeUrl) {String cookie = "";ByteArrayOutputStream data = new ByteArrayOutputStream();try {// 创建URLURL url = new URL(vrifyCodeUrl);byte[] by = new byte[1024];// 创建链接HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("GET");conn.setConnectTimeout(5000);InputStream is = conn.getInputStream();// 获取cookie 格式: JSESSIONID=A5B2A80BA310A146DCBC606E084E29D1cookie = "JSESSIONID="+conn.getHeaderField("set-cookie").split(";")[0].split("=")[1];System.out.println("Cookie:"+cookie);// 将内容读取内存中int len = -1;while ((len = is.read(by)) != -1) {data.write(by, 0, len);}// 关闭流is.close();} catch (IOException e) {e.printStackTrace();}return cookie;}public static void main(String[] args) {getCookie("http://xxxxx");}}
输出:
Cookie:JSESSIONID=4964544B3CC5968EC3D387BAE31FA461
