HttpURLConnection或HttpClient都没法获得完整的数据

后台返回的json字符串较大（100K左右），用HttpURLConnection或HttpClient都没法获得完整的数据，都是获得40K左右，后面就没了，不知道大伙遇到过这类问题吗？代码如下
1、这是使用HttpClient 的
        try {
            HttpGet httpRequest = new HttpGet(url);
            HttpClient httpclient = new DefaultHttpClient();
            HttpResponse httpResponse = httpclient.execute(httpRequest);
            if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                InputStream input = httpResponse.getEntity().getContent();
                byte[] b = new byte[1024];
                int len = 0;
                StringBuffer buff = new StringBuffer();
                while ((len = input.read(b)) != -1) {
                    buff.append(new String(b));
                }
                return buff.toString();

                // 使用如下代码只返回40K
                // return EntityUtils.toString(httpResponse.getEntity(),"UTF-8");
            }
        } catch ...
2、这是直接用HttpURLConnection的
        try {
            URL url = new URL(urlStr);
            if (null != url) {
                HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
                if (null == urlConnection) {
                    return null;
                }
                urlConnection.setConnectTimeout(3000);
                urlConnection.setRequestMethod("GET"); 
                urlConnection.setDoInput(true); 
                urlConnection.setDoOutput(true); 

                // /< 获得服务器的响应结果和状态码
                int responseCode = urlConnection.getResponseCode();
                if (200 == responseCode) {
                    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
                    byte[] data = new byte[1024];
                    int len = 0;
                    String result = "";
                    if (null != urlConnection.getInputStream()) {
                        while ((len = urlConnection.getInputStream().read(data)) != -1) {
                            outputStream.write(data, 0, len);
                        }
                        result = new String(outputStream.toByteArray());
                        return result;
                    } 
                }
            }
        } catch ...

7 个解决方案