commons-httpclient post请求乱码问题记录(非编码问题,gzip格式问题)

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最近工作中需要使用commons-httpclient模拟请求拿到返回值，在浏览器上面直接请求很正常，如图：

但是代码返回的结果却是乱码，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);

确定不是编码问题后，反编译jar，debug看代码，试了很多次都没发现问题，

偶然发现浏览器返回的值是用gzip编码的，如下：

而是试着看下模拟请求是否也是一样，结果如下：

确定原因后，只要解压一下就可以了：

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");  }

结果如下：

全文完

。

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