Question

我使用this example中的代码从JSONObject向我的网络服务器发送Android client。在此处重现代码

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;

int TIMEOUT_MILLISEC = 10000;  // = 10 seconds
HttpParams httpParams = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParams, TIMEOUT_MILLISEC);
HttpConnectionParams.setSoTimeout(httpParams, TIMEOUT_MILLISEC);
HttpClient client = new DefaultHttpClient(httpParams);

HttpPost request = new HttpPost(serverUrl);
request.setEntity(new ByteArrayEntity(
    postMessage.toString().getBytes("UTF8")));
HttpResponse response = client.execute(request);

我的问题

如何在将JSONObject发送到服务器之前对Java Servlets进行最佳压缩，以及如何在服务器上解压缩（我正在使用{{1}}）？

Answer 1

根据这个http://android-developers.blogspot.com/2011/09/androids-http-clients.html如果您使用Gingerbread或更高版本，HttpURLConnection会自动添加gzip压缩：

在Gingerbread中，我们添加了透明的响应压缩。   HttpURLConnection会自动将此标头添加到传出   请求，并处理相应的响应：

Accept-Encoding：gzip

您的网络服务器需要处理gzip压缩。

编辑：
Serve Gzipped content with Java Servlets

编辑2：
使用DefaultHttpClient Enabling GZip compression with HttpClient

进行Gzip压缩

private static final String HEADER_ACCEPT_ENCODING = "Accept-Encoding";
private static final String ENCODING_GZIP = "gzip";

final DefaultHttpClient client = new DefaultHttpClient(manager, parameters);

client.addRequestInterceptor(new HttpRequestInterceptor() {
  public void process(HttpRequest request, HttpContext context) {
    // Add header to accept gzip content
    if (!request.containsHeader(HEADER_ACCEPT_ENCODING)) {
      request.addHeader(HEADER_ACCEPT_ENCODING, ENCODING_GZIP);
    }
  }
});

client.addResponseInterceptor(new HttpResponseInterceptor() {
  public void process(HttpResponse response, HttpContext context) {
    // Inflate any responses compressed with gzip
    final HttpEntity entity = response.getEntity();
    final Header encoding = entity.getContentEncoding();
    if (encoding != null) {
      for (HeaderElement element : encoding.getElements()) {
        if (element.getName().equalsIgnoreCase(ENCODING_GZIP)) {
          response.setEntity(new InflatingEntity(response.getEntity()));
          break;
        }
      }
    }
  }
});

编辑3：
这是关于邮件内容GZip POST request with HTTPClient in Java的gzipping的另一个Stackoverflow问题。您需要在发布数据之前手动gzip数据，因为正常的http / gzip操作是将gzip压缩内容发送到客户端的服务器。

如何压缩JSONObject在Android中通过Http发送它？

1 个答案: