从 Apache Http POST 请求返回字符串（Android）

Question

我正在尝试从我的 andorid 应用程序中的 HTTP 发布请求中获取 json string。使用来自this post 的解决方案，此处也显示了代码。

public void post(String completeUrl, String body) {
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(completeUrl);
httpPost.setHeader("Content-type", "application/json");
try {
    StringEntity stringEntity = new StringEntity(body);
    httpPost.getRequestLine();
    httpPost.setEntity(stringEntity);

    httpClient.execute(httpPost);
} catch (Exception e) {
    throw new RuntimeException(e);
}
}

我从异步任务内部调用 post（用于在单独的线程上处理网络访问）。

String result;
result = post("https://StringURLGoesHere.com/", "jsonStringBodyGoesHere");

根据documentation for HttpClient class，要处理响应，我需要在 HttpClient.execute() 方法中添加第二个参数 ResponseHandler。

public interface ResponseHandler<T> {
T handleResponse(HttpResponse var1) throws ClientProtocolException, IOException;
}

我就是这样做的：

public String post(String completeUrl, String body) {
        HttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(completeUrl);
        httpPost.setHeader("Content-type", "application/json");
        try {
            StringEntity stringEntity = new StringEntity(body);
            httpPost.getRequestLine();
            httpPost.setEntity(stringEntity);

            ResponseHandler<String> reply = new ResponseHandler<String>() {
                @Override
                public String handleResponse(HttpResponse httpResponse) throws ClientProtocolException, IOException {
                    return httpResponse.toString();
                }
            };
            return httpClient.execute(httpPost,reply);


        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

我在我的应用程序的文本视图中显示字符串。上面写着：

org.apache.http.message.BasicHttpResponse@1446ef0c

或

org.apache.http.message.BasicHttpResponse@b83bd3d

或

org.apache.http.message.BasicHttpResponse@1c4c9e1d

等等。

为什么我得到这个返回作为一个字符串？为了让 json 对象的字符串在 post 后返回，应该改变什么？

Answer 1

Try like below to capture HttpRepose to see your response;
HttpClient request = HttpClientBuilder.create().build();        
HttpGet get = new HttpGet(url);
get.setHeader( "Authorization", token);
HttpResponse response = null;
try {
     response = request.execute( get );
} catch ( ClientProtocolException e ) {
     // TODO Auto-generated catch block
     e.printStackTrace();
} catch ( IOException e ) {
    // TODO Auto-generated catch block
     e.printStackTrace();
}

BufferedReader rd = new BufferedReader( new InputStreamReader( response.getEntity().getContent() ) );

StringBuffer result = new StringBuffer();
String line = "";
while ( (line = rd.readLine()) != null ) {
      result.append( line );
}

System.out.println( response.getStatusLine().getStatusCode() );
System.out.println( result.toString() );

Answer 2

你可以这样做：

    httpPost.setEntity(entity);
    HttpResponse response = httpclient.execute(httpPost);
    String responseString = new BasicResponseHandler().handleResponse(response);
    return responseString;  //this is your want