Java twitter流式api-在http post请求中设置过滤器（apache httpcomponents）

我正在试用twitter流媒体api。我可以使用curl成功过滤推文，如下所述：

现在我尝试在JavaSE中使用Apache的HTTPComponents做同样的事情：

    UsernamePasswordCredentials creds = new UsernamePasswordCredentials(<user>, <pass>);
    DefaultHttpClient httpClient = new DefaultHttpClient();
    httpClient.getCredentialsProvider().setCredentials(AuthScope.ANY, creds);
    HttpPost httpPost = new HttpPost("http://stream.twitter.com/1/statuses/filter.json");
    HttpParams params = new BasicHttpParams();

    params = params.setParameter("track", "Berlin");
    httpPost.setParams(params);

    try {
        HttpResponse httpResponse = httpClient.execute(httpPost);
        HttpEntity entity = httpResponse.getEntity();
        if (entity != null) {
            InputStream instream = entity.getContent();
            String t;
            BufferedReader br = new BufferedReader(new InputStreamReader(instream));
            while(true) {
                t = br.readLine();
                if(t != null) {                        
                    linkedQueue.offer(t);
                }
            }
        }
    } catch (IOException ioe) {
        System.out.println(ioe.getMessage());
    }
    finally{
        httpClient.getConnectionManager().shutdown();
    }

---

这就是我做错的。谢谢你，布莱恩

我怀疑您需要将数据作为HTTP post的内容发布。

curl-d

的手册页显示：

（HTTP）以指定的格式发送指定的数据 在中向HTTP服务器发送请求 与浏览器在 用户已填写HTML表单，并且 按下提交按钮。这将 使curl将数据传递给 使用内容类型的服务器 application/x-www-form-urlencoded

因此，我认为您必须设置该内容类型，并将跟踪文件的内容放在帖子的正文中

track=Berlin

    UsernamePasswordCredentials creds = new UsernamePasswordCredentials(<user>, <pass>);
    DefaultHttpClient httpClient = new DefaultHttpClient();
    httpClient.getCredentialsProvider().setCredentials(AuthScope.ANY, creds);
    HttpPost httpPost = new HttpPost("http://stream.twitter.com/1/statuses/filter.json");
    HttpParams params = new BasicHttpParams();

    params = params.setParameter("track", "Berlin");
    httpPost.setParams(params);

    try {
        HttpResponse httpResponse = httpClient.execute(httpPost);
        HttpEntity entity = httpResponse.getEntity();
        if (entity != null) {
            InputStream instream = entity.getContent();
            String t;
            BufferedReader br = new BufferedReader(new InputStreamReader(instream));
            while(true) {
                t = br.readLine();
                if(t != null) {                        
                    linkedQueue.offer(t);
                }
            }
        }
    } catch (IOException ioe) {
        System.out.println(ioe.getMessage());
    }
    finally{
        httpClient.getConnectionManager().shutdown();
    }

        StringEntity postEntity = new StringEntity("track=Berlin", "UTF-8");
        postEntity.setContentType("application/x-www-form-urlencoded");
        httpPost.setEntity(postEntity);