json对象与javabean相互转化

import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.FileReader; import java.io.FileWriter; import java.text.SimpleDateFormat; import java.util.Date; import net.sf.json.JSONObject; public class FileTool { static String infile = "d:/testJson.data"; static String outfile = "d:/testJson.data"; public static void main(String[] args) { // TODO Auto-generated method stub System.out.println(getSysTime()+" Test start"); //testWriteJsonToRowFile(); testReadJsonToRowFile(); System.out.println(getSysTime()+" Test end"); } public static String getSysTime() { SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd HH:mm:ss"); String time = sdf.format(new Date()); return time; } public static void testReadJsonToRowFile(){ try{ BufferedReader in = new BufferedReader( new FileReader(infile),10000);//10000不是指行数，是指缓冲区的大小 String s ; while ((s = in.readLine()) != null){ //对s进行处理，我这里是把它转换成Json对象 JSONObject jsonObj=JSONObject.fromObject(s);//将字符串转化为json对象 //写数据库处理 ObjBean bean=(ObjBean)JSONObject.toBean(jsonObj,ObjBean.class); System.out.println(bean.getName()); } in.close(); } catch(Exception e){ } } public static void testWriteJsonToRowFile(){ try{ BufferedWriter bw=new BufferedWriter(new FileWriter(outfile),10000);//同上 for(int i=0;i<1000;i++) { ObjBean bean=new ObjBean(); // JSONObject jsonObj=new JSONObject(); // for(int j=0;j<10;j++) // { // jsonObj.put("REAL_RESULT_"+j, "测试好不好用"); // } JSONObject jsonObj=JSONObject.fromObject(bean); bw.write(jsonObj.toString()+"\n"); } bw.flush(); bw.close(); } catch(Exception e){ } } }