JSONArray資料轉換為實體類

TableA、TableB 是根據json資料建立的實體類 建議將json資料放到json.cn

裡面格式化

json-lib是一個java類庫，提供將Java物件，包括beans, maps, collections, java arrays and XML等轉換成JSON，或者反向轉換的功能。

import net.sf.json.*;

import java.io.*;

import java.net.MalformedURLException;

import java.net.URL;

import java.net.URLConnection;

import java.util.ArrayList;

import java.util.List;

public class findElectSet {

/*

* 取出檔案內容，填充物件

*/

public List<TableA> writeFile(String path) {

List<TableA> tableAS = new ArrayList<>();

String sets = ReadFile(path);//獲得json檔案的內容

JSONObject jsonObject = JSONObject.fromObject(sets);//格式化成json物件

Object data = jsonObject.get("data");

JSONObject jsonObject1 = JSONObject.fromObject(data);

String list = jsonObject1.getString("list");

JSONArray jsonArray = JSONArray.fromObject(list);

List<TableA> tableAList = new ArrayList<>();

for (Object o : jsonArray) {

JSONObject jo = JSONObject.fromObject(o);

TableA tableA = new TableA();

tableA.setId(jo.getString("id"));

tableA.setZbbmText(jo.getString("zbbmText"));

tableA.setCreateDate(jo.getString("createDate"));

tableA.setTopic(jo.getString("topic"));

tableA.setCreateUserText(jo.getString("createUserText"));

tableA.setWh(jo.getString("wh"));

tableA.setFwrq(jo.getString("fwrq"));

List<TableB> tableBList = new ArrayList<>();

String attlist = jo.getString("attlist");

JSONArray jsonArray1 = JSONArray.fromObject(attlist);

for (Object jsonArr1 : jsonArray1) {

JSONObject j = JSONObject.fromObject(jsonArr1);

TableB tableB = new TableB();

tableB.setContentId(j.getString("contentId"));

tableB.setDurl(j.getString("durl"));

tableB.setTopic(j.getString("topic"));

tableB.setType(j.getString("type"));

tableBList.add(tableB);

}

tableA.setAttlist(tableBList);

tableAList.add(tableA);

}

return tableAList;

}

//讀檔案，返回字串public String ReadFile(String path) {

StringBuffer strBuf = new StringBuffer();

try {

URL url = new URL(path);

URLConnection conn = url.openConnection();

BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));

String line = null;

while((line = reader.readLine()) != null) {

strBuf.append(line + " ");

}

reader.close();

} catch (MalformedURLException e) {

System.out.println();

} catch (IOException e) {

System.out.println(e);

}

return strBuf.toString();

}

}

@SpringBootApplication

public class DemoApplication {

public static void main(String[] args) {

SpringApplication.run(DemoApplication.class, args);

findElectSet f=new findElectSet();

List<TableA> tableAS = f.writeFile("http://XXXXXXXXXXXXXXXXX");

System.out.println(tableAS.toString());

}

}