commons-httpclient post請求亂碼問題記錄(非編碼問題,gzip格式問題)
阿新 • • 發佈:2019-01-04
最近工作中需要使用commons-httpclient模擬請求拿到返回值,在瀏覽器上面直接請求很正常,如圖 :
但是程式碼返回的結果卻是亂碼,如下:
byte[] bs = new byte[] { 31, -117, 8, 0, 0, 0, 0, 0, 0, 0, -85, 86, 42, -54, 47, 47, 86, -78, -118, -82, 86, 42, -82, 44, 14, -87, 44, 72, 85, -78, 82, 50, 84, -46, 81, 42, 45, 78, 45, -14, 76, 1, 114, -116, 77, -52, -108, 106, 99, 117, -108, -118, 74, -14, -100, -13, 83, 32, -46, -75, 0, -27, 121, -125, -98, 55, 0, 0, 0 }; String r2 = new String(bs, "utf-8"); String r3 = new String(bs, "gbk"); String r4 = new String(bs, "ISO8859-1"); String r5 = new String(bs); String r6 = new String(r3.getBytes(), "utf-8"); System.out.println(r2); System.out.println(r3); System.out.println(r4); System.out.println(r5); System.out.println(r6);
確定不是編碼問題後,反編譯jar,debug看程式碼,試了很多次都沒發現問題,
偶然發現瀏覽器返回的值是用gzip編碼的,如下 :
而是試著看下模擬請求是否也是一樣,結果如下 :
確定原因後,只要解壓一下就可以了 :
if(rtnStatus==200){ Header[] header=post.getResponseHeaders("Content-Encoding"); if(header!=null&&header.length>0){ if("gzip".equals(header[0].getValue())){ rtnJson = new String(uncompress(post.getResponseBody())); }else{ rtnJson = new String(post.getResponseBody(), "UTF-8"); } }else{ rtnJson = new String(post.getResponseBody(), "UTF-8"); } }
public static String uncompress(byte[] bytes) throws IOException { if (bytes == null || bytes.length == 0) { return ""; } ByteArrayOutputStream out = new ByteArrayOutputStream(); ByteArrayInputStream in = new ByteArrayInputStream(bytes); GZIPInputStream gunzip = new GZIPInputStream(in); byte[] buffer = new byte[256]; int n; while ((n = gunzip.read(buffer)) >= 0) { out.write(buffer, 0, n); } return out.toString("utf-8"); }
結果如下 :
全文完
。