比较net.sf.json和org.json

来源：互联网发布：天猫软件编辑：程序博客网时间：2024/06/14 06:56

版本：
net.sf.json-lib:json-lib:2.4
org.json:json:2.2

import net.sf.json.JSONObject;import org.json.JSONException;public class CompareJsonJar {    public static void main(String[] args) throws JSONException {        String text= "{\"keywords\": \"好\", \"mainFeedIdStr\":123}";        String key = "mainFeedIdStr";        System.out.println("---------------------------net.sf.json------------------------");        JSONObject netJson = JSONObject.fromObject(text);        String mainFeedIdStr = netJson.getString(key);        System.out.println("mainFeedIdStr = " + mainFeedIdStr);        Long mainFeedId = netJson.getLong(key);        System.out.println("mainFeedId = " + mainFeedId);        System.out.println("---------------------------org.json------------------------");        org.json.JSONObject orgJson = new org.json.JSONObject(text);        mainFeedIdStr = orgJson.getString(key);        System.out.println("mainFeedIdStr = " + mainFeedIdStr);        mainFeedId = orgJson.getLong(key);        System.out.println("mainFeedId = " + mainFeedId);    }}

输出：

---------------------------net.sf.json------------------------mainFeedIdStr = 123mainFeedId = 123---------------------------org.json------------------------Exception in thread "main" java.lang.reflect.InvocationTargetException    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)    at java.lang.reflect.Method.invoke(Method.java:606)    at com.intellij.rt.execution.CommandLineWrapper.main(CommandLineWrapper.java:121)Caused by: org.json.JSONException: JSONObject["mainFeedIdStr"] not a string.    at org.json.JSONObject.getString(JSONObject.java:639)    at CompareJsonJar.main(CompareJsonJar.java:17)    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)    at java.lang.reflect.Method.invoke(Method.java:606)    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)    ... 5 more

由此可以看出，org.json.JSONObject.getString(key)不能获取数值；而net.sf.json.JSONObject.getString(key)可以；

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