1.需要的 jar 包

2.测试类

package testJson;

import net.sf.json.JSONObject;

public class TestJson {
	public static void main(String[] args) {
		String resultStr = "{    \"status\":\"OK\",\"result\":{        \"location\":{            \"lng\":121.477357,\"lat\":31.215912        },\"precise\":1,\"confidence\":80,\"level\":\"\u9053\u8def\"    }}";
		
		JSONObject jsObj = JSONObject.fromObject(resultStr);
		jsObj = (JSONObject) jsObj.get("result");
		jsObj = (JSONObject) jsObj.get("location");
		System.out.println(jsObj.get("lng").toString());
		System.out.println(jsObj.get("lat").toString());
	}
}