解析在網站獲取的JSON數據串，獲取交換機的流表信息並解析出來

package test;
//這些事導入的一些包，需要引用一些jar才行
import java.io.IOException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

public class HttpTest {

	// 獲取帶有參數的json串
	public static String getHttpResult(String url, String parm) {

		HttpClient httpclient = new DefaultHttpClient();
		HttpGet httpget = new HttpGet(url + parm);
		String json = null;
		try {
			HttpResponse response = httpclient.execute(httpget);
			HttpEntity entity = response.getEntity();
			if (entity != null) {
				json = EntityUtils.toString(entity, "UTF-8").trim();

			}
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			httpget.abort();
		}
		return json;
	}

	/* 獲取沒有參數的json串
	public static String getHttpResult(String url) {

		HttpClient httpclient = new DefaultHttpClient();
		HttpGet httpget = new HttpGet(url);
		String json = null;
		try {
			HttpResponse response = httpclient.execute(httpget);
			HttpEntity entity = response.getEntity();
			if (entity != null) {
				json = EntityUtils.toString(entity, "UTF-8").trim();

			}
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			httpget.abort();
		}
		return json;
	}
	*/
	
	//此方法用來獲取某個交換機的流表信息
	public static void ParseJson(String url,String switchid,String jsonString) {
		JSONObject jsonobj = JSONObject.fromObject(jsonString); // 將json字符串轉換成jsonObject對象
		JSONArray flowsOfSwitch=jsonobj.getJSONArray(switchid);//把交換機parm號的流表信息轉換成Json數組
		System.out.println("交換機"+switchid+"的流表信息如下：");
		for (int i = 0; i < flowsOfSwitch.size(); i++) {//依次取出1號交換機的每一個流表
			int j=i+1;
			System.out.println("第"+j+"條流表：");
			System.out.println("actions:");
			System.out.println("actions:"+flowsOfSwitch.getJSONObject(0).getJSONArray("actions").get(0));
			System.out.println("idle_timeout:"+flowsOfSwitch.getJSONObject(0).get("idle_timeout"));
			System.out.println("cookie:"+flowsOfSwitch.getJSONObject(0).get("cookie"));
			System.out.println("packet_count:"+flowsOfSwitch.getJSONObject(0).get("packet_count"));
			System.out.println("hard_timeout:"+flowsOfSwitch.getJSONObject(0).get("hard_timeout"));
			System.out.println("byte_count:"+flowsOfSwitch.getJSONObject(0).get("byte_count"));
			System.out.println("duration_sec:"+flowsOfSwitch.getJSONObject(0).get("duration_sec"));
			System.out.println("duration_nsec:"+flowsOfSwitch.getJSONObject(0).get("duration_nsec"));
			System.out.println("priority:"+flowsOfSwitch.getJSONObject(0).get("priority"));
			System.out.println("length:"+flowsOfSwitch.getJSONObject(0).get("length"));
			System.out.println("flags:"+flowsOfSwitch.getJSONObject(0).get("flags"));
			System.out.println("table_id:"+flowsOfSwitch.getJSONObject(0).get("table_id"));
			System.out.println("match:");
			System.out.println("dl_dst:"+flowsOfSwitch.getJSONObject(0).getJSONObject("match").get("dl_dst"));
			System.out.println("dl_src:"+flowsOfSwitch.getJSONObject(0).getJSONObject("match").get("dl_src"));
			System.out.println("in_port:"+flowsOfSwitch.getJSONObject(0).getJSONObject("match").get("in_port"));
		}
	
	
	}
	
	

	/*
	 * 依次取出JSONArray中的值 private static void getJsonArrayItem(JSONArray array) { for
	 * (int i=0; i<array.size(); i++) { System.out.println(array.get(i)); } }
	 */

	public static void main(String args[]) {

		/* 獲取網絡拓撲中的所有交換機，第一次返回的是json串，第二次返回的是解析後的數組
		String url = "http://192.168.177.129:8080/stats/switches";
		String result = getHttpResult(url);
		JSONArray jsonarray = JSONArray.fromObject(result);
		System.out.println("未經加工的json數組：" + jsonarray);// 返回或取得數據，也就是json串
		for (int i = 0; i < jsonarray.size(); i++) {
			System.out.println("解析出來的json數組中的元素：" + jsonarray.get(i));// 返回解析好的json內的數據，其實獲得的是一個數組，get（index）就是獲取數組中的第幾位
		}
*/
		
		/* 獲取1號交換機的所有流表信息
		String parm = "1";
		String url1 = "http://192.168.177.130:8080/stats/flow/";
		String jsonString = getHttpResult(url1, parm);
		System.out.println("未經解析的交換機1的流表信息：" + jsonString);
		*/
		
		String switchid1 = "1";
		String url1 = "http://192.168.177.130:8080/stats/flow/";
		String jsonString1 = getHttpResult(url1, switchid1);
		ParseJson(url1,switchid1,jsonString1);
		
		

	}

}