Question

大神帮忙解答一下这个json数据怎么在java里用json lib解析存放到List里

[
{
"city": "",
"citys": [
{
"city": "北京",
"id": 2,
"level": 2,
"province": "北京",
"seq": 0,
"x": 116.405,
"y": 39.905
}
],
"id": 1,
"level": 1,
"province": "北京",
"region": "华北地区",
"seq": 0,
"x": 116.405,
"y": 39.905
},
{
"city": "",
"citys": [
{
"city": "上海",
"id": 4,
"level": 2,
"province": "上海",
"seq": 0,
"x": 121.473,
"y": 31.2317
}
],
"id": 3,
"level": 1,
"province": "上海",
"region": "华东地区",
"seq": 0,
"x": 121.473,
"y": 31.2317
}
]

Answer 1

import java.util.List;

import net.sf.json.JSONArray;

public class Spider
{
	public static void main(String[] args)
	{
		String jsonstr = "[    {        \"city\": \"\",        \"citys\": [            {                \"city\": \"北京\",                \"id\": 2,                \"level\": 2,                \"province\": \"北京\",                \"seq\": 0,                \"x\": 116.405,                \"y\": 39.905            }        ],        \"id\": 1,        \"level\": 1,        \"province\": \"北京\",        \"region\": \"华北地区\",        \"seq\": 0,        \"x\": 116.405,        \"y\": 39.905    },    {        \"city\": \"\",        \"citys\": [            {                \"city\": \"上海\",                \"id\": 4,                \"level\": 2,                \"province\": \"上海\",                \"seq\": 0,                \"x\": 121.473,                \"y\": 31.2317            }        ],        \"id\": 3,        \"level\": 1,        \"province\": \"上海\",        \"region\": \"华东地区\",        \"seq\": 0,        \"x\": 121.473,        \"y\": 31.2317    }]";
		JSONArray array = JSONArray.fromString(jsonstr);
		List list = JSONArray.toList(array);
		System.out.println(list);
	}
}

追问

你的json_lib是什么版本的？我的没有fromString这个方法啊

追答

1. net.sf版本的json库　　

   json-lib-0.9.jar

　　commons-logging.jar

　　commons-lang-2.4.jar

　　commons-beanutils-1.8.3.jar

　　ezmorph-1.0.jar

    2. fastjson库

    fastjson-1.1.36.jar

    3.谷歌gson库

    gson-1.7.1.jar