信息的展示

package com.example.myapplication;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Parcelable;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

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

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Serializable;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

public class show00 extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.show00);
        ListView listView = (ListView) this.findViewById(R.id.listView);
        Handler mHandler = new Handler(){
            @SuppressLint("HandlerLeak")
            @Override
            public void handleMessage(Message msg) {
                super.handleMessage(msg);
                switch (msg.what) {
                    case 1:{
                        String x=(String) msg.obj;
                        Log.d("jsonstr", x);
                        JSONArray JsonObj=null;
                        try {
                            JsonObj= new JSONArray(x);
                            Log.d("JsonStrllll", JsonObj.toString());
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                        int length=JsonObj.length();
                        ArrayList<newjb> list = new ArrayList<newjb>();
                        for(int i=0;i<length;i++){
                            newjb shi=null;
                            try {
                                JSONObject Json=JsonObj.getJSONObject(i);
                                shi=new newjb();
                                shi.setLeixing(Json.getString("leixing"));
                                shi.setChexing(Json.getString("chexing"));
                                shi.setChepai(Json.getString("chepai"));
                                shi.setYanse(Json.getString("yanse"));
                                shi.setTupian(Json.getString("tupian"));
                                list.add(shi);
                            } catch (JSONException e) {
                                e.printStackTrace();
                            }
                        }
                        List<HashMap<String, Object>> data = new ArrayList<HashMap<String,Object>>();
                        for(newjb sg : list){
                            HashMap<String, Object> item = new HashMap<String, Object>();
                            item.put("leixing", sg.getLeixing());
                            item.put("chexing", sg.getChexing());
                            item.put("chepai", sg.getChepai());
                            item.put("yanse", sg.getYanse());
                            item.put("tupian", sg.getTupian());
                            data.add(item);
                        }
                        //创建SimpleAdapter适配器将数据绑定到item显示控件上
                        SimpleAdapter adapter = new SimpleAdapter(show00.this, data, R.layout.newitem,
                                new String[]{"leixing", "chexing", "chepai","yanse"}, new int[]{R.id.leixing, R.id.chexing, R.id.chepai01,R.id.yanse});
                        //实现列表的显示
                        listView.setAdapter(adapter);
                        //条目点击事件
                        listView.setOnItemClickListener(new ItemClickListener());
                    }
                    break;
                }
            }
        };
        new Thread(new Runnable() {
            @Override
            public void run() {//java的多线程这个必须有的
                String x=http();
                Message message = new Message();
                message.what = 1;
                message.obj = x;
                mHandler.sendMessage(message);

            }
        }).start();

    }
    //获取点击事件
    private final class ItemClickListener implements AdapterView.OnItemClickListener {

        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            ListView listView = (ListView) parent;
            HashMap<String, Object> data = (HashMap<String, Object>) listView.getItemAtPosition(position);
            newjb shi0 = new newjb();
            shi0.setLeixing(data.get("leixing").toString());
            shi0.setChexing(data.get("chexing").toString());
            shi0.setChepai(data.get("chepai").toString());
            shi0.setYanse(data.get("yanse").toString());
            shi0.setTupian(data.get("tupian").toString());
            Intent intent = new Intent(show00.this,
                    show000.class);
            intent.putExtra("shi", (Serializable) shi0);
            startActivity(intent);
        }
    }
    public String http(){
        HttpURLConnection huc=null;
        URL url=null;
        String x=null;
        try {
            url=new URL("http://43.138.34.77:8080/androidtest/servlet/zhanshi0");
            huc=(HttpURLConnection)url.openConnection();
            huc.setConnectTimeout(60000);
            huc.setUseCaches(false);
            huc.setInstanceFollowRedirects(true);
            huc.setReadTimeout(60000);

            huc.setDoInput(true);
            huc.setDoOutput(true);
            huc.setRequestMethod("POST");
            huc.setRequestProperty("Content-Type","application/json;charset=UTF-8");
            huc.connect();


            String j="0";//把json赋值给字符串


            OutputStream ups=huc.getOutputStream();//输出流
            BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(ups));//输出流转字符缓冲输出流
            bw.write(j);//输出字符串j
            bw.flush();
            ups.close();//关闭输出流
            bw.close();//关闭字符缓冲流
            InputStream in = huc.getInputStream();
            //读取输入流
            BufferedReader reader = new BufferedReader(new InputStreamReader(in));
            StringBuilder result = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null) {
                result.append(line);
            }
            x=result.toString();
            huc.getResponseCode();//这个必须有，得到Http的应答器
            x=result.toString();
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            huc.disconnect();
        }

        return x;
    }
}