JSon文件解析

#json.txt

 {

name:"中国",

provinces:[

{name:"黑龙江",

citys:["佳木斯","大庆","哈尔滨","齐齐哈尔","牡丹江"]

},

{name:"辽宁",

citys:["沈阳","大连","盘锦"]

},

{name:"吉林",

citys:["吉林市","长春市","四平市"]

}

]

}

#JSonParser .java

import java.io.*;

import java.text.ParseException;

import org.json.*;

/**

 * 从json文件读取数据，形成JSon对象，读取对象数据并打印

 */

public class JSonParser {

public static void main(String[] args) {

//从JSon文件读取数据

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 {

//将Json文件数据形成JSONObject对象

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

//获取JSONObject对象数据并打印

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();

}

}

}

运行结果：

name:黑龙江

citys:佳木斯大庆哈尔滨齐齐哈尔牡丹江

name:辽宁

citys:沈阳大连盘锦

name:吉林

citys:吉林市长春市四平市