JSon文件解析

#json.txt

 {

name:"中國",

provinces:[

{name:"黑龍江",

citys:["佳木斯","大慶","哈爾濱","齊齊哈爾","牡丹江"]

},

{name:"遼寧",

citys:["沈陽","大連","盤錦"]

},

{name:"吉林",

citys:["吉林市","長春市","四平市"]

}

]

}

#JSonParser .java

import java.io.*;

import java.text.ParseException;

 

import org.json.*;

 

/**

 * 從json文件讀取數據，形成JSon對象，讀取對象數據並打印

 */

public class JSonParser {

 

public static void main(String[] args) {

//從JSon文件讀取數據

StringBuffer stringBuffer = new StringBuffer();

String line = null ;

try {

BufferedReader br = new BufferedReader(new FileReader(new File("json.txt")));

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

stringBuffer.append(line);

} 

} catch (FileNotFoundException e) {

       e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

try {

//將Json文件數據形成JSONObject對象

JSONObject jsonObject = new JSONObject(stringBuffer.toString());

//獲取JSONObject對象數據並打印

JSONArray provinces = jsonObject.getJSONArray("provinces") ;

String name = null ;

StringBuffer jsonFileInfo = new StringBuffer();

JSONArray citys = null ;

for (int i = 0; i < provinces.length(); i++) {

name = provinces.getJSONObject(i).getString("name");

jsonFileInfo.append("/nname:" + name + "/n" + "citys:");

citys = provinces.getJSONObject(i).getJSONArray("citys");

for (int j = 0; j < citys.length(); j++) {

jsonFileInfo.append(citys.getString(j)+"/t");

}

}

 

System.out.println(jsonFileInfo);

} catch (ParseException e) {

e.printStackTrace();

}

}

}

 

運行結果：

 

name:黑龍江

citys:佳木斯 大慶 哈爾濱 齊齊哈爾 牡丹江

name:遼寧

citys:沈陽 大連 盤錦

name:吉林

citys:吉林市 長春市 四平市