求助，java用httpclient包，模拟发送json和接受json

httpclient类库包含了get，post发送数据的相关的方法
参考代码：get方式
String httpUrl = "http://192.168.1.116:8080/AndroidWeb/httpreq.jsp?par=request-get";
HttpGet request = new HttpGet(httpUrl);
HttpClient httpClient = new DefaultHttpClient();
try {
HttpResponse response = httpClient.execute(request);
if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
String str = EntityUtils.toString(response.getEntity());
tv_rp.setText(str);
} else {
tv_rp.setText("请求错误");
}
} catch (ClientProtocolException e) {

e.printStackTrace();
} catch (IOException e) {

e.printStackTrace();
}
}
-------------------------

post方式
String httpUrl = "http://192.168.1.116:8080/AndroidWeb/httpreq.jsp";
HttpPost request = new HttpPost(httpUrl);
List params = new ArrayList();
params.add(new BasicNameValuePair("par","request-post"));
try {
HttpEntity entity = new UrlEncodedFormEntity(params, "UTF-8");
request.setEntity(entity);
HttpClient client = new DefaultHttpClient();
HttpResponse response = client.execute(request);
if(response.getStatusLine().getStatusCode()==HttpStatus.SC_OK){
String str = EntityUtils.toString(response.getEntity());
tv_rp.setText(str);
}else{
tv_rp.setText("请求错误");
}
} catch (UnsupportedEncodingException e) {

e.printStackTrace();
} catch (ClientProtocolException e) {

e.printStackTrace();
} catch (IOException e) {

e.printStackTrace();
}