RequestParams params = new RequestParams("https://passport.csdn.net/account/login?ref=toolbar");
params.setHeader("User-Agent","Mozilla/5.0 (Windows NT 6.1; Trident/7.0; rv:11.0) like Gecko");
x.http().get(params, new Callback.CommonCallback<String>() {
  @Override
  public void onSuccess(String result) {
    Log.i("csdn", "onSuccess");
    RequestParams params1=new RequestParams("https://passport.csdn.net/account/login?ref=toolbar");
    params1.setHeader("Accept","text/html, application/xhtml+xml, */*");
    params1.setHeader("Content-Type", "application/x-www-form-urlencoded");
    params1.setHeader("DNT", "1");
    params1.setHeader("Host","passport.csdn.net");
    params1.setHeader("Accept-Language","zh-CN");
    params1.setHeader("User-Agent","Mozilla/5.0 (Windows NT 6.1; Trident/7.0; rv:11.0) like Gecko");
    Document doc=Jsoup.parse(result);
    Element formEle=doc.getElementById("fm1");
    Elements inputs=formEle.getElementsByTag("input");
    for (Element input : inputs){
      if(input.attr("name").equals("lt")){
        params1.addQueryStringParameter("lt", input.attr("value"));
      }else if(input.attr("name").equals("execution")){
        params1.addQueryStringParameter("execution", input.attr("value"));
      }else if(input.attr("name").equals("_eventId")){
        params1.addQueryStringParameter("_eventId", input.attr("value"));
      }
    }
    params1.addQueryStringParameter("username", "你的帐号");
    params1.addQueryStringParameter("password","你的密码");
  }

  @Override
  public void onError(Throwable ex, boolean isOnCallback) {
    Log.i("csdn", "onError");
  }

  @Override
  public void onCancelled(CancelledException cex) {
    Log.i("csdn", "onCancelled");
  }

  @Override
  public void onFinished() {
    Log.i("csdn", "onFinished");
  }
});

public void getLoginCSDN(final RequestParams params){
  x.http().request(HttpMethod.POST, params, new Callback.CommonCallback<String>() {
    @Override
    public void onSuccess(String result) {
      Log.i("liyuanjinglyj", "onSuccess");
      System.out.println(result.toString());

    }

    @Override
    public void onError(Throwable ex, boolean isOnCallback) {
      ex.printStackTrace();
      Log.i("liyuanjinglyj", "onError");
    }

    @Override
    public void onCancelled(CancelledException cex) {
      Log.i("liyuanjinglyj", "onCancelled");
    }

    @Override
    public void onFinished() {
      Log.i("liyuanjinglyj", "onFinished");
    }
  });

RequestParams requestParams = new RequestParams("http://blog.csdn.net/ljy1988123/comment/submit");
requestParams.setConnectTimeout(15000);
requestParams.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1; Trident/7.0; rv:11.0) like Gecko");
requestParams.setHeader("Accept-Language", "zh-CN");
requestParams.setHeader("Host","blog.csdn.net");
requestParams.setHeader("Referer","http://blog.csdn.net/ljy1988123/article/details/50581207");
requestParams.setHeader("Accept", "*/*");
requestParams.setHeader("Content-Type", "application/x-www-form-urlencoded");
requestParams.setHeader("X-Requested-With", "XMLHttpRequest");
requestParams.setHeader("Connection", "Keep-Alive");
requestParams.setMultipart(true);
requestParams.addQueryStringParameter("id", "50581207");
requestParams.addParameter("commentid", " ");
requestParams.addParameter("content", "  太喜欢这篇博文了。。 98 ");
requestParams.addParameter("replyId", " ");
setHttpContent(requestParams);

public void setHttpContent(RequestParams params){
  x.http().post(params, new Callback.CommonCallback<String>() {
    @Override
    public void onSuccess(String result) {
      Log.i("liyuanjinglyj", "onSuccess");
      System.out.println(result.toString());
    }

    @Override
    public void onError(Throwable ex, boolean isOnCallback) {
      ex.printStackTrace();
      Log.i("liyuanjinglyj", "onError");
    }

    @Override
    public void onCancelled(CancelledException cex) {
      Log.i("liyuanjinglyj", "onCancelled");
    }

    @Override
    public void onFinished() {
      Log.i("liyuanjinglyj", "onFinished");
    }
  });
}