HttpClient 鏄?Apache Jakarta Common 涓嬬殑瀛愰」鐩紝鍙互鐢ㄦ潵鎻愪緵楂樻晥鐨勩佹渶鏂扮殑銆佸姛鑳戒赴瀵岀殑鏀寔 HTTP 鍗忚鐨勫鎴風緙栫▼宸ュ叿鍖咃紝騫朵笖瀹冩敮鎸?HTTP 鍗忚鏈鏂扮殑鐗堟湰鍜屽緩璁?br /> HttpClient 鎻愪緵鐨勪富瑕佺殑鍔熻兘錛?
- 瀹炵幇浜嗘墍鏈?HTTP 鐨勬柟娉曪紙GET,POST,PUT,HEAD 絳夛級
- 鏀寔鑷姩杞悜
- 鏀寔 HTTPS 鍗忚
- 鏀寔浠ｇ悊鏈嶅姟鍣ㄧ瓑
HttpClient 鍩烘湰鍔熻兘鐨勪嬌鐢?/span>
GET 鏂規(guī)硶
浣跨敤 HttpClient 闇瑕?/span>浠ヤ笅 6 涓楠わ細
1. 鍒?/span>寤?HttpClient 鐨勫疄渚?/span>
HttpClient httpClient = new HttpClient();
2. 鍒涘緩鏌愮榪炴帴鏂規(guī)硶鐨勫疄渚嬶紝鍦ㄨ繖閲屾槸 GetMethod銆傚湪 GetMethod 鐨勬瀯閫犲嚱鏁頒腑浼犲叆寰呰繛鎺ョ殑鍦板潃
GetMethod getMethod = new GetMethod("http://www.tom.com/");
3. 璋冪敤絎竴姝ヤ腑鍒涘緩濂界殑瀹炰緥鐨?execute 鏂規(guī)硶鏉ユ墽琛岀浜屾涓垱寤哄ソ鐨?method 瀹炰緥
int statusCode = httpClient.executeMethod(getMethod);
if (statusCode ==HttpStatus.SC_OK) 鍒欒鏄庢垚鍔熶簡
4. 璇?response
byte[] responseBody = method.getResponseBody();
String responseBody = method.getResponseBodyAsString();
5. 閲婃斁榪炴帴銆傛棤璁烘墽琛屾柟娉曟槸鍚︽垚鍔燂紝閮藉繀欏婚噴鏀捐繛鎺?/span>
method.releaseConnection();
6. 瀵瑰緱鍒板悗鐨勫唴瀹硅繘琛屽鐞?/span>
POST鏂規(guī)硶
鏍規(guī)嵁RFC2616錛屽POST鐨勮В閲婂涓嬶細POST鏂規(guī)硶鐢ㄦ潵鍚戠洰鐨勬湇鍔″櫒鍙戝嚭璇鋒眰錛岃姹傚畠鎺ュ彈琚檮鍦ㄨ姹傚悗鐨勫疄浣擄紝騫舵妸瀹冨綋浣滆姹傞槦鍒楋紙Request-Line錛変腑璇鋒眰URI鎵鎸囧畾璧勬簮鐨勯檮鍔犳柊瀛愰」銆侾OST琚璁℃垚鐢ㄧ粺涓鐨勬柟娉曞疄鐜頒笅鍒楀姛鑳斤細
- 瀵圭幇鏈夎祫婧愮殑娉ㄩ噴錛圓nnotation of existing resources錛?
- 鍚戠數瀛愬叕鍛婃爮銆佹柊闂葷粍錛岄偖浠跺垪琛ㄦ垨綾諱技璁ㄨ緇勫彂閫佹秷鎭?
- 鎻愪氦鏁版嵁鍧楋紝濡傚皢琛ㄥ崟鐨勭粨鏋滄彁浜ょ粰鏁版嵁澶勭悊榪囩▼
- 閫氳繃闄勫姞鎿嶄綔鏉ユ墿灞曟暟鎹簱
璋冪敤HttpClient涓殑PostMethod涓嶨etMethod綾諱技錛岄櫎浜嗚緗甈ostMethod鐨勫疄渚嬩笌GetMethod鏈変簺涓嶅悓涔嬪錛屽墿涓嬬殑姝ラ閮藉樊涓嶅銆?/span>
娉ㄦ剰錛?/span>
錛?錛夎〃鍗曚腑鐨勫煙鐢ㄧ被NameValuePair鏉ヨ〃紺猴紝璇ョ被鐨勬瀯閫犲嚱鏁扮涓涓弬鏁版槸鍩熷悕錛岀浜屽弬鏁版槸璇ュ煙鐨勫?/span>
錛?錛夊皢琛ㄥ崟鎵鏈夌殑鍊艱緗埌PostMethod涓敤鏂規(guī)硶setRequestBody
錛?錛塇ttpClient瀵逛簬瑕佹眰鎺ュ彈鍚庣戶鏈嶅姟鐨勮姹傦紝姣斿POST鍜孭UT錛屼笉鏀寔鑷姩杞彂錛屽洜姝ら渶瑕佽嚜宸卞欏甸潰杞悜鍋氬鐞?/span>
錛?錛?01琛ㄧず姘鎬箙鐨勭Щ璧幫紙Moved Permanently錛夛紝褰撹繑鍥炵殑鏄?01錛屽垯琛ㄧず璇鋒眰鐨勮祫婧愬凡緇忚縐誨埌涓涓浐瀹氱殑鏂板湴鏂癸紝浠諱綍鍚戣鍦板潃鍙戣搗璇鋒眰閮戒細琚漿鍒版柊鐨勫湴鍧涓娿?02琛ㄧず鏆傛椂鐨勮漿鍚戯紝姣斿鍦ㄦ湇鍔″櫒绔殑servlet紼嬪簭璋冪敤浜唖endRedirect鏂規(guī)硶錛屽垯鍦ㄥ鎴風灝變細寰楀埌涓涓?02鐨勪唬鐮侊紝榪欐椂鏈嶅姟鍣ㄨ繑鍥炵殑澶翠俊鎭腑location鐨勫煎氨鏄痵endRedirect杞悜鐨勭洰鏍囧湴鍧銆?/span>
String url = "http://www.abc.com";
PostMethod postMethod = new PostMethod(url);
NameValuePair[] data = { new NameValuePair("id", "youUserName"),
new NameValuePair("passwd", "yourPwd") };
postMethod.setRequestBody(data);
int statusCode = httpClient.executeMethod(postMethod);
// 301鎴栬?02
if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY ||
statusCode == HttpStatus.SC_MOVED_TEMPORARILY) {
// 浠庡ご涓彇鍑鴻漿鍚戠殑鍦板潃
Header locationHeader = postMethod.getResponseHeader("location");
String location = null;
if (locationHeader != null) {
location = locationHeader.getValue();
System.out.println("The page was redirected to:" + location);
} else {
System.err.println("Location field value is null.");
}
return;
}
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