Java用JSONObject-lib来解析json串

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

public class JsonParser {

	@SuppressWarnings("rawtypes")
	public void test() {		
		Map m = this.testJson("jsonString");
		System.out.println(((Map) ((List) m.get("test")).get(0)).get("test_title"));
	}

	@SuppressWarnings({ "rawtypes", "unchecked" })
	public Map testJson(String str) {
		JSONObject json = JSONObject.fromObject(str);
		Iterator<?> it = json.keySet().iterator();
		Map map = new HashMap();
		while (it.hasNext()) {
			String key = (String) it.next();
			String value = json.getString(key);
			if (this.isString(value)) {
				map.put(key, value);
			}
			if (this.isJson(value)) {
				map.put(key, this.testJson(value));
			}
			if (this.isJsonArray(value)) {
				map.put(key, this.testJsonArray(value));
			}

		}
		return map;
	}

	@SuppressWarnings({ "unchecked", "rawtypes" })
	public List testJsonArray(String str) {
		JSONArray jsonArr = JSONArray.fromObject(str);
		List list = new ArrayList();
		for (Object json : jsonArr) {
			list.add(this.testJson(json.toString()));
		}
		return list;
	}

	public boolean isJson(String s) {
		boolean flag = true;
		try {
			JSONObject.fromObject(s);
		} catch (Exception e) {
			flag = false;
		}
		return flag;
	}

	public boolean isJsonArray(String s) {
		boolean flag = true;
		try {
			JSONArray.fromObject(s);
		} catch (Exception e) {
			flag = false;
		}
		return flag;
	}

	public boolean isString(String s) {
		return !this.isJson(s) && !this.isJsonArray(s);
	}

	public static void main(String[] args) {
		JsonParser tj = new JsonParser();
		tj.test();

	}

}