HttpURLConnection

HttpURLConnection

URL url = new URL(targetUrl);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();


connection.setRequestProperty("user-agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.106 Safari/537.36");
connection.setRequestProperty("accept-language","zh-CN,zh;q=0.9");
connection.setRequestProperty("sec-ch-ua-platform","Windows");
connection.setRequestProperty("sec-ch-ua-platform-version","10.0.0");
connection.setRequestProperty("sec-ch-ua","'Google Chrome';v='95', 'Chromium';v='95', ';Not A Brand';v='99'");
connection.setRequestProperty("cookie","");

// 默认就是Get，可以采用post，大小写都行，因为源码里都toUpperCase了。
connection.setRequestMethod("GET");
// 是否允许缓存，默认true。
connection.setUseCaches(Boolean.FALSE);
// 是否开启输出输入，如果是post使用true。默认是false
// connection.setDoOutput(Boolean.TRUE);
// connection.setDoInput(Boolean.TRUE);
// 设置请求头信息
connection.addRequestProperty("Connection", "close");
// 设置连接主机超时（单位：毫秒）
connection.setConnectTimeout(8000);
// 设置从主机读取数据超时（单位：毫秒）
connection.setReadTimeout(8000);
// 设置Cookie
// connection.addRequestProperty("Cookie", "你的Cookies");
// 开始请求
int index = targetUrl.indexOf("://") + 3;
String baseUri = targetUrl.substring(0, index) + url.getHost();
document2 = Jsoup.parse(connection.getInputStream(), "GBK", baseUri);

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