Httpclient使用详解

##post请求

public static JSONObject sendSms(String imei, String app_id, JSONObject payload, String ttl, String priority, String publisher_id) {
        HttpClient httpclient = new DefaultHttpClient();
        String smsUrl = ""; //接口地址
        if (payload.getString("action") == "screenShot") {
            smsUrl = "http://192.168.1.1/user/" + imei + "/asyn";
        } else {
            smsUrl = "http://192.168.1.1/user/" + imei + "/syn";
        }
        HttpPost httppost = new HttpPost(smsUrl);
        JSONObject result = new JSONObject();
        String strResult = "";
        try {
            List<NameValuePair> formatdata = new ArrayList<NameValuePair>();
            formatdata.add(new BasicNameValuePair("app_id", app_id));
            formatdata.add(new BasicNameValuePair("payload", getStringFromJson(payload)));
            formatdata.add(new BasicNameValuePair("ttl", ttl));
            formatdata.add(new BasicNameValuePair("priority", priority));
            formatdata.add(new BasicNameValuePair("publisher_id", publisher_id));

            httppost.addHeader("Content-type", "application/x-www-form-urlencoded");
            httppost.setEntity(new UrlEncodedFormEntity(formatdata, "UTF-8"));

            HttpResponse response = httpclient.execute(httppost);
            String conResult = EntityUtils.toString(response.getEntity());
            result = fromObject(conResult);
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            httpclient.getConnectionManager().shutdown();
        }

        return result;
    }

##get请求

public static JSONObject sendSms(String onlineurl){ //获取
        HttpClient httpclient = new DefaultHttpClient();
        HttpGet httpget=new HttpGet(onlineurl);
        //HttpPost httppost = new HttpPost(onlineurl);
        JSONObject result = new JSONObject();
        String strResult = "";
        try {
            List<NameValuePair> formatdata = new ArrayList<NameValuePair>();

            // 设置请求和传输超时时间
            RequestConfig requestConfig = RequestConfig.custom()
                    .setSocketTimeout(2000).setConnectTimeout(2000).build();
            httpget.setConfig(requestConfig);
            HttpResponse response = httpclient.execute(httpget);
            String conResult = EntityUtils.toString(response.getEntity());
            result = fromObject(conResult);
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            httpclient.getConnectionManager().shutdown();
        }

        return result;
    }
    
    
     //json对象转为json字符串
        private static String getStringFromJson(JSONObject adata) {
            StringBuffer sb = new StringBuffer();
            sb.append("{");
            for (Object key : adata.keySet()) {
                sb.append("\"" + key + "\":\"" + adata.get(key) + "\",");
            }
            String rtn = sb.toString().substring(0, sb.toString().length() - 1) + "}";
            return rtn;
        }