网站开发岗位思维导图/百度用户服务中心官网电话

大部分网站都是可以用cookie的方式去模拟登陆状态的。
打开需要模拟登陆的网站，登陆后，找到需要调用的链接，url。
按F12打开控制台，在网络那里可以看到

把红线框住的Cookie复制出来，放到请求Header里面即可。

conn.setRequestProperty("Cookie", Cookie);

具体代码如下：

import com.alibaba.fastjson.JSONObject;import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.charset.Charset;public class PostUtil {static String postUrl = "http://www.xxx.com/api/get/list/xxx";static String Cookie = "xxxxxxxxxxxxxxxxx";public static void main(String[] args) {
//        请求参数，里面包含分页JSONObject params = JSONObject.parseObject("{\"size\": 15, \"page\": 1}");System.out.println(params);String result = loadData(postUrl, params.toJSONString());System.out.println("返回数据：" + result);}public static String loadData(String url, String params) {try {URL wsUrl = new URL(url);HttpURLConnection conn = (HttpURLConnection) wsUrl.openConnection();conn.setDoInput(true);conn.setDoOutput(true);conn.setRequestMethod("POST");conn.setRequestProperty("Content-Type", "application/json;charset=UTF-8");conn.setRequestProperty("Cookie", Cookie);OutputStream os = conn.getOutputStream();os.write(params.getBytes(Charset.forName("UTF-8")));InputStream is = conn.getInputStream();byte[] b = new byte[1024];int len = 0;StringBuffer buffer = new StringBuffer();while ((len = is.read(b)) != -1) {String ss = new String(b, 0, len, "UTF-8");buffer.append(ss);}is.close();os.close();conn.disconnect();String resultStr = buffer.toString();return resultStr;} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return null;}
}