android get post提交与获取数据

package com.example.service;

import java.io.InputStream; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLEncoder; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map;

import org.json.JSONArray; import org.json.JSONObject;

import com.example.info.UserInfo;

public class MsgService {     public static ArrayList<HashMap<String,String>> getpinglungbyID(String path) throws Exception  {     URL url=new URL(path);      HttpURLConnection conn =(HttpURLConnection)url.openConnection();   conn.setConnectTimeout(2000);   conn.setRequestMethod("GET");   if(conn.getResponseCode()==200)   {    InputStream inStream=conn.getInputStream();    return parseJSONpinglun(inStream);   }      return new ArrayList<HashMap<String,String>>();  }  public static ArrayList<HashMap<String,String>> getpiblishMsg(String path) throws Exception  {          URL url=new URL(path);      HttpURLConnection conn =(HttpURLConnection)url.openConnection();   conn.setConnectTimeout(2000);   conn.setRequestMethod("GET");   if(conn.getResponseCode()==200)   {    InputStream inStream=conn.getInputStream();    return parseJSONpublish(inStream);   }      return new ArrayList<HashMap<String,String>>();  }  public static boolean sendmsg(String path,HashMap<String,String> hmp,String encode)  {   try {     byte[] data = getRequestData(hmp, encode).toString().getBytes();      URL url=new URL(path);      HttpURLConnection httpURLConnection = (HttpURLConnection)url.openConnection();            httpURLConnection.setConnectTimeout(3000);       //设置连接超时时间            httpURLConnection.setDoInput(true);                  //打开输入流，以便从服务器获取数据            httpURLConnection.setDoOutput(true);                 //打开输出流，以便向服务器提交数据            httpURLConnection.setRequestMethod("POST");  //设置以Post方式提交数据            httpURLConnection.setUseCaches(false);               //使用Post方式不能使用缓存            //设置请求体的类型是文本类型            httpURLConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");            //设置请求体的长度            httpURLConnection.setRequestProperty("Content-Length", String.valueOf(data.length));            //获得输出流，向服务器写入数据            httpURLConnection.connect();            OutputStream outputStream = httpURLConnection.getOutputStream();            outputStream.write(data);            outputStream.flush();            outputStream.close();                int response = httpURLConnection.getResponseCode();              httpURLConnection.disconnect();            if(response == HttpURLConnection.HTTP_OK) {                             return true;                     //处理服务器的响应结果            }            return false;       } catch (Exception e) {       System.out.println(e.getMessage());    return false;     }         

       }    public static StringBuffer getRequestData(Map<String, String> params, String encode) {             StringBuffer stringBuffer = new StringBuffer();        //存储封装好的请求体信息            try {                for(Map.Entry<String, String> entry : params.entrySet()) {                   stringBuffer.append(entry.getKey())                                .append("=")                                .append(URLEncoder.encode(entry.getValue(), encode))                                 .append("&");                 }               stringBuffer.deleteCharAt(stringBuffer.length() - 1);    //删除最后的一个"&"            } catch (Exception e) {                e.printStackTrace();             }            return stringBuffer;        }  /*private static List<YXmsg> parseJSON(InputStream inStream) throws Exception{   byte[] data=ImageService.read(inStream);   String string=new String(data);   JSONArray jsonArray =new JSONArray(string);   List<YXmsg> msgs=new ArrayList<YXmsg>();   for(int i=0;i<jsonArray.length();i++)   {    YXmsg msg=new YXmsg();    JSONObject jsonobject= jsonArray.getJSONObject(i);    msg.setUserID(jsonobject.getString("otheruserID"));    msg.setContext(jsonobject.getString("context"));    msgs.add(msg);       }      return msgs;  }*/  private static ArrayList<HashMap<String,String>> parseJSONpinglun(InputStream inStream) throws Exception{   byte[] data=ImageService.read(inStream);   String string=new String(data);   JSONArray jsonArray =new JSONArray(string);   ArrayList<HashMap<String,String>> msgs=new ArrayList<HashMap<String,String>>();      for(int i=0;i<jsonArray.length();i++)   {    HashMap<String,String> msg=new HashMap<String,String>();    JSONObject jsonobject= jsonArray.getJSONObject(i);    msg.put("userID", jsonobject.getString("userID"));    msg.put("content", jsonobject.getString("content"));    msg.put("date", jsonobject.getString("date"));    msgs.add(msg);       }      return msgs;  }  private static ArrayList<HashMap<String,String>> parseJSONpublish(InputStream inStream) throws Exception{   byte[] data=ImageService.read(inStream);   String string=new String(data);   JSONArray jsonArray =new JSONArray(string);   ArrayList<HashMap<String,String>> dateArrayList=new ArrayList<HashMap<String,String>>();   for(int i=0;i<jsonArray.length();i++)   {    HashMap<String,String> item =new HashMap<String, String>();    JSONObject jsonobject= jsonArray.getJSONObject(i);        item.put("userimage", UserInfo.getUserImageID(jsonobject.getString("userID")));    item.put("content", jsonobject.getString("content"));    item.put("date", jsonobject.getString("date"));    dateArrayList.add(item);   }   return dateArrayList;  }

}