我用C寫的抓取請求頭資訊是這樣的，能抓到，回傳200
GET ／ HTTP/1.1
Host: www.moa.gov.cn
Referer: http://www.moa.gov.cn
Accept-Encoding: gzip,deflate,sdch,br
Cache-Control: no-cache,max-age=0
Pragma: no-cache
Connection: close
Upgrade: 1
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36
用java寫的請求頭資訊是這樣的，抓不到，回傳400
GET http://www.moa.gov.cn HTTP/1.1
Referer: http://www.moa.gov.cn
Accept-Encoding: gzip,deflate,sdch,br
Cache-Control: no-cache,max-age=0
Pragma: no-cache
Connection: close
Upgrade: 1
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36
java代碼：
request = new HttpGet(url);
request.setHeader(HttpHeaders.HOST,"www.moa.gov.cn");
request.setHeader(HttpHeaders.REFERER,"http://www.moa.gov.cn");
request.setHeader(HttpHeaders.ACCEPT_ENCODING, "gzip,deflate,sdch,br");
request.setHeader(HttpHeaders.CACHE_CONTROL, "no-cache,max-age=0");
request.setHeader(HttpHeaders.PRAGMA, "no-cache");
request.setHeader(HttpHeaders.CONNECTION,"close");
request.setHeader(HttpHeaders.UPGRADE, "1");
request.setHeader(HttpHeaders.USER_AGENT, "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36");
response = httpClient.execute(request);
跪求大牛解惑
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召喚大神
uj5u.com熱心網友回復：
去掉這個request.setHeader(HttpHeaders.HOST,"www.moa.gov.cn");，大部分的httpproxy會在get加完整url轉載請註明出處，本文鏈接：https://www.uj5u.com/qita/115552.html
標籤：網絡協議與配置