Question

JSONObject 读取json问题

json格式是这样的：[{"key":"a","value":"1"},{"key":"b","value":"2"}]
怎么读取呢

Answer 1

package image;

import java.util.Iterator;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

public class FrameTest
{
	public static void main ( String[] Args )
	{
		String json = "[{\"key\":\"a\",\"value\":\"1\"},{\"key\":\"b\",\"value\":\"2\"}]";
		JSONArray ja = JSONArray.fromString (json);
		for ( int i = 0; i < ja.length (); i++ )
		{
			JSONObject jo = JSONObject.fromObject (ja.get (i));
			Iterator<?> it = jo.keys ();
			while (it.hasNext ())
			{
				System.out.print (jo.get ((String) it.next ()) + " ");
			}
		}
	}
}

Answer 2

<script type="text/javascript" src="jq/js/jquery.js"></script>
<script type="text/javascript">
$(function(){
var a=[{"key1":"a","value1":"1"},{"key2":"b","value2":"2"}]
alert(a[1].key2)
})
</script>

Answer 3

public static void main(String[] args) {
String str="[{"key":"a","value":"1"},{"key":"b","value":"2"}]";
JSONObject jsonList= JSONObject.fromObject(str);
List list=(List ) JSONObject.toBean(jsonList, List.class);
System.out.println(list);
}
转换成List<Map<String,String>>类型

Answer 4

var data = [{"key":"a","value":"1"},{"key":"b","value":"2"}];

var key = data[0].key;
var value= data[0].value;