Android studio http协议 HttpUrlConnection 解析json 调用服务器服务获得数据 批量插入数据库

Android studio http协议

HTTPPOST.java

package com.example.code;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

public class HTTPPOST {
    public static String hqposjson(String urlStr, String postjson) {
        HttpURLConnection conn = null;
        InputStream inStream = null;
        PrintWriter printWriter = null;
        try {
            URL url = new URL(urlStr);
            conn = (HttpURLConnection) url.openConnection();
            conn.setDoInput(true);
            conn.setDoOutput(true);
            conn.setConnectTimeout(30000);
            conn.setReadTimeout(30000);
            conn.setUseCaches(false);
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Content-Type", "application/x-javascript; charset=utf-8");
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            //conn.setRequestProperty("Content-Length", String.valueOf(postjson.length()));
            printWriter = new PrintWriter(conn.getOutputStream());
            printWriter.write(postjson);
            printWriter.flush();
            if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
                inStream = new BufferedInputStream(conn.getInputStream());
            } else {
                inStream = new BufferedInputStream(conn.getErrorStream());
            }

            String result = iniotoString(inStream);
            return result;

        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (conn != null) {
                conn.disconnect();
            }
            if (printWriter != null) {
                printWriter.close();
            }
            try {
                if (inStream != null) {
                    inStream.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return null;
    }

    private static String iniotoString(InputStream is) {
        String line = "";
        StringBuilder sb = new StringBuilder();
        try {
            BufferedReader rd = new BufferedReader(new InputStreamReader(is, "utf-8"));
            while ((line = rd.readLine()) != null) {
                sb.append(line);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return sb.toString();
    }
}

**.java 调用 (http请求要开线程)

	//获取token
	String t="{\"user\":\"用户名\",\"password\":\"密码\"}";
	JSONObject obj= new JSONObject(HTTPPOST.hqposjson(tokenurl,t));
	String token=(String) obj.get("token");
	List data=new ArrayList();
	String tt="{\"token\":\""+token+"\",\"data\":"+data+"}";
	//http请求
	JSONObject document= new JSONObject(HTTPPOST.hqposjson(“网址”,tt));
	JSONArray jData=(JSONArray)document.get("data");
	//连接数据库
	DBHelper db=new DBHelper(Setting.this);
	SQLiteDatabase sqldb=db.getWritableDatabase();
	String sqlValuesSql="";
	int j=0;
	for(int i=0;i<jData.length();i++){
	   JSONObject p=(JSONObject)jData.get(i);
	   String cName = p.get("cName").toString();
	   String cValue = p.get("cValue").toString();
	   String cType = p.get("cType").toString();
	   String cContent = p.get("cContent").toString();
	   String cDefaultValue = p.get("cDefaultValue").toString();
	   int bIsVisiable;
	   if (p.get("bIsVisiable").equals("false")) {
	       bIsVisiable = 0;
	   } else {
	       bIsVisiable = 1;
	   }
	   //批量插入数据库sql
	   sqlValuesSql=sqlValuesSql+" select '"+cName+"','"+cValue+"','"+cType+"','"+cContent+"','"+bIsVisiable+"','"+cDefaultValue+"' union all  ";
	   j=j+1;
	   if(j>=400){
	        //System.out.print(sqlValuesSql);
	        sqlValuesSql=sqlValuesSql.substring(0,sqlValuesSql.length()-11) ;
	        sqldb.execSQL(sqlStr+sqlValuesSql) ;
	        j=0;
	        sqlValuesSql="";
	    }
	 }
	 if (sqlValuesSql !="")
	 {
	      sqlValuesSql=sqlValuesSql.substring(0,sqlValuesSql.length()-11) ;
	      sqldb.execSQL(sqlStr+sqlValuesSql) ;
	  }
	  db.close();
	  if("ok".equals(document.get("flag").toString())) {
	                System.out.println("请求成功");
	            }else{
	                new Thread(new Runnable() {
	                    @Override
	                    public void run() {
	                        Handler handler = new Handler(Looper.getMainLooper());
	                        handler.post(new Runnable() {
	                            @Override
	                            public void run() {
	                                //放在UI线程弹Toast
	                                Toast.makeText(Setting.this, "获取数据失败！", Toast.LENGTH_LONG).show();
	                            }
	                        });
	                    }
	                }).start();
	            }