httpclient调用接口

有时候会将参数(返回结果)压缩(解压)，加密(解密)

将json参数通过GZip压缩　　Base64加密

public static String gzipAndEncryption(String data){
        String result = "";

        try {
            //请求参数的数据压缩
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            GZIPOutputStream gzip = new GZIPOutputStream(out);
            if (StrUtil.isEmpty(data)) {
                log.warn("传递请求参数为空");
               return result;
            }
            gzip.write(data.getBytes());

            out.close();
            gzip.close();

            //加密
            result = new BASE64Encoder().encodeBuffer(out.toByteArray());

        } catch (Exception e) {
            log.error("请求参数压缩加密失败，失败原因：{}",e);
        }
        log.info("请求参数压缩加密结果：" + result);
        return result;
    }

将返回结果Base64解密　　GZip解压

 public static String decryptionAndUnzip(String data){
        String result = "";

        try {
            //解密
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            byte[] c = new Base64().decode(data);
            //解压
            ByteArrayInputStream in = new ByteArrayInputStream(c);
            GZIPInputStream gunzip = new GZIPInputStream(in);
            byte[] buffer = new byte[1024];
            int offset = -1;
            while ((offset = gunzip.read(buffer)) >= 0) {
                String s = new String(buffer, StandardCharsets.UTF_8);
                buffer = s.getBytes();
                out.write(buffer, 0, offset);
            }
            result = out.toString();
            log.info("响应参数解密解压结果：" + result);
            out.close();
            in.close();
            gunzip.close();

        } catch (IOException e) {
            log.warn("响应参数解密解压失败，失败原因：{}",e);
        }

        return result;
    }

发送post请求

public static String sendHttpPost(String url,String param){
        String result = null;

        try {
            HttpClient httpClient = new HttpClient();
            PostMethod postMethod = new PostMethod(url);

            //压缩加密参数
            String paramStrPwd = gzipAndEncryption(param);

            RequestEntity se = new StringRequestEntity(paramStrPwd,"application/json" ,"UTF-8");

            postMethod.setRequestEntity(se);
            postMethod.setRequestHeader("Content-Type","application/json");
            postMethod.addRequestHeader("accept-encoding", "gzip");
            postMethod.addRequestHeader("content-encoding", "gzip");

            httpClient.executeMethod(postMethod);
            String response = postMethod.getResponseBodyAsString();

            //响应结果解密解压缩
            result = decryptionAndUnzip(response);
        } catch (Exception e) {
            log.info("请求调用失败，请求路径：{}，请求参数：{}，失败原因：{}",url,param,e);
        }

        return result;
    }