Java：JSON解析工具-org.json

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一、简介

org.json是Java常用的Json解析工具，主要提供JSONObject和JSONArray类，现在就各个类的使用解释如下。

二、准备

1.在使用org.json之前，我们应该先从该网址https://github.com/douglascrockford/JSON-java下载org.json源码，并将源码其加入到Eclipse中，即可调用。

2.查看相关的API文档，访问：https://github.com/douglascrockford/JSON-java。

https://github.com/stleary/JSON-Java-unit-test

三、讲解：

1.JSONObject：

是一个无序的键/值对集合。
它的表现形式是一个包裹在花括号的字符串，键和值之间使用冒号隔开，键值和键值之间使用逗号隔开。
内在形式是一个使用get()和opt()方法通过键来访问值，和使用put()方法通过键来添加或者替代值的对象。
值可以是任何这些类型：Boolean,JSONArray,JSONObject,Number和String，或者JOSONObject.NULL对象。

代码演示如下：

public static void jsonObjectTest() {
ﾠﾠ JSONObject jsonobj = new JSONObject("{'name':'xiazdong','age':20}");
String name = jsonobj.getString("name");
ﾠﾠ int age = jsonobj.getInt("age");
System.out.println("name = " + name + ",age = " + age);
}

注：JSONObject有很多optXXX方法，比如optBoolean, optString, optInt...

他们的意思是，如果这个jsonObject有这个属性，则返回这个属性，否则返回一个默认值。

2.JSONArray：

是一个有序的序列值。
它的表现形式是一个包裹在方括号的字符串，值和值之间使用逗号隔开。
内在形式是一个使用get()和opt()方法通过索引来访问值，和使用put()方法来添加或修改值的对象。
值可以是任何这些类型：Boolean,JSONArray,JSONObject,Number,和String，或者JSONObject.NULL对象。

代码演示如下：

public static void jsonArrayTest() {
ﾠﾠ JSONArray jsonarray = new JSONArray("[{'name':'xiazdong','age':20},{'name':'xzdong','age':15}]");
ﾠﾠ for (int i = 0; i < jsonarray.length(); i++) {
ﾠﾠﾠﾠﾠJSONObject jsonobj = jsonarray.getJSONObject(i);
String name = jsonobj.getString("name");
int age = jsonobj.getInt("age");
System.out.println("name = " + name + ",age = " + age);
}
}

嵌套的JSONObject和JSONArray代码演示如下：

public static void jsonObjectAndArrayTest() {
ﾠﾠ String jsonstring = "{'name':'xiazdong','age':20,'book':['book1','book2']}";
ﾠﾠ JSONObject jsonobj = new JSONObject(jsonstring);
String name = jsonobj.getString("name");
ﾠﾠ System.out.println("name" + ":" + name);
int age = jsonobj.getInt("age");
System.out.println("age" + ":" + age);
ﾠﾠ JSONArray jsonarray = jsonobj.getJSONArray("book");
ﾠﾠ for (int i = 0; i < jsonarray.length(); i++) {
String book = jsonarray.getString(i);
ﾠﾠﾠﾠ System.out.println("book" + i + ":" + book);
}
}

3.JSONStringer：

是一个用于快速构造JSON文本的工具
JSONWriter的子类
bject():开始一个对象，即添加{；enObject():结束一个对象，即添加}
array():开始一个数组，即添加[； endArray():结束一个数组，即添加]
key():表示添加一个key；value():表示添加一个value

代码演示如下：

public static void jsonStringerTest() {
ﾠﾠ JSONStringer stringer = new JSONStringer();
stringer.object().key("name").value("xiazdong").key("age").value(20).endObject();
ﾠﾠ System.out.println(stringer);
}

负载的JSON格式写演示（PrintWriter+JSONStringer可以写入JSON文件）：

public static void jsonStringerTest2() throws FileNotFoundException {
ﾠﾠ JSONStringer jsonStringer = new JSONStringer();
ﾠﾠ JSONObject obj6 = new JSONObject();
obj6.put("title", "book1").put("price", "$11");
ﾠﾠ JSONObject obj3 = new JSONObject();
obj3.put("book", obj6);
ﾠﾠ obj3.put("author", new JSONObject().put("name", "author-1"));
ﾠﾠ JSONObject obj5 = new JSONObject();
obj5.put("title", "book2").put("price", "$22");
ﾠﾠ JSONObject obj4 = new JSONObject();
obj4.put("book", obj5);
ﾠﾠobj4.put("author", new JSONObject().put("name", "author-2"));
ﾠﾠ JSONArray obj2 = new JSONArray();
obj2.put(obj3).put(obj4);
ﾠﾠ JSONObject obj1 = new JSONObject();
obj1.put("title", "BOOK");
obj1.put("signing", obj2);
jsonStringer.object().key("session").value(obj1).endObject();
System.out.println(jsonStringer.toString());
ﾠﾠ PrintWriter out = new PrintWriter(new FileOutputStream("1.txt"));
ﾠﾠ out.println(jsonStringer.toString());
out.close();
}

4.JSONTokener

它和JSONObject和JSONArray的构造函数一起使用，用于解析JSON源字符串

代码演示如下（JSONObject+JSONTokener能够获取JSON格式文本对象）：

public static void JSONTokenerTest() throws FileNotFoundException {
JSONObject jsonobj = new JSONObject(new JSONTokener(new FileReader(new File("1.txt"))));
System.out.println(jsonobj.getJSONObject("session").getJSONArray("signing").getJSONObject(1).getJSONObject("book").getString("title"));
}

注意：在Java中，JSON格式的字符串最好用单引号表示

JSON in Java [package org.json]JSON is a light-weight, language independent, data interchange format.
See http://www.JSON.org/The files in this package implement JSON encoders/decoders in Java.
It also includes the capability to convert between JSON and XML, HTTP
headers, Cookies, and CDL.This is a reference implementation. There is a large number of JSON packages
in Java. Perhaps someday the Java community will standardize on one. Until
then, choose carefully.The license includes this restriction: "The software shall be used for good,
not evil." If your conscience cannot live with that, then choose a different
package.The package compiles on Java 1.6-1.8.JSONObject.java: The JSONObject can parse text from a String or a JSONTokener
to produce a map-like object. The object provides methods for manipulating its
contents, and for producing a JSON compliant object serialization.JSONArray.java: The JSONObject can parse text from a String or a JSONTokener
to produce a vector-like object. The object provides methods for manipulating
its contents, and for producing a JSON compliant array serialization.JSONTokener.java: The JSONTokener breaks a text into a sequence of individual
tokens. It can be constructed from a String, Reader, or InputStream.JSONException.java: The JSONException is the standard exception type thrown
by this package.JSONPointer.java: Implementation of
[JSON Pointer (RFC 6901)](https://tools.ietf.org/html/rfc6901). Supports
JSON Pointers both in the form of string representation and URI fragment
representation.JSONString.java: The JSONString interface requires a toJSONString method,
allowing an object to provide its own serialization.JSONStringer.java: The JSONStringer provides a convenient facility for
building JSON strings.JSONWriter.java: The JSONWriter provides a convenient facility for building
JSON text through a writer.CDL.java: CDL provides support for converting between JSON and comma
delimited lists.Cookie.java: Cookie provides support for converting between JSON and cookies.CookieList.java: CookieList provides support for converting between JSON and
cookie lists.HTTP.java: HTTP provides support for converting between JSON and HTTP headers.HTTPTokener.java: HTTPTokener extends JSONTokener for parsing HTTP headers.XML.java: XML provides support for converting between JSON and XML.JSONML.java: JSONML provides support for converting between JSONML and XML.XMLTokener.java: XMLTokener extends JSONTokener for parsing XML text.Unit tests are maintained in a separate project. Contributing developers can test
JSON-java pull requests with the code in this project:
https://github.com/stleary/JSON-Java-unit-test

package com.json;import java.text.ParseException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;/**
* 使用json-lib构造和解析Json数据
*
* @author Alexia
* @date 2013/5/23
*
*/
public class OrgJsonTest { /**
* 构造Json数据
*
* @return
* @throws JSONException
*/
public static String BuildJson() throws JSONException { // JSON格式数据解析对象
JSONObject jo = new JSONObject(); // 下面构造两个map、一个list和一个Employee对象
Map<String, String> map1 = new HashMap<String, String>();
map1.put("name", "Alexia");
map1.put("sex", "female");
map1.put("age", "23"); Map<String, String> map2 = new HashMap<String, String>();
map2.put("name", "Edward");
map2.put("sex", "male");
map2.put("age", "24"); List<Map> list = new ArrayList<Map>();
list.add(map1);
list.add(map2); Employee employee = new Employee();
employee.setName("wjl");
employee.setSex("female");
employee.setAge(24); // 将Map转换为JSONArray数据
JSONArray ja = new JSONArray();
ja.put(map1); System.out.println("JSONArray对象数据格式：");
System.out.println(ja.toString()); // 将Javabean转换为Json数据（需要Map中转）
JSONObject jo1 = JsonHelper.toJSON(employee); System.out.println("\n仅含Employee对象的Json数据格式：");
System.out.println(jo1.toString()); // 构造Json数据，包括一个map和一个含Employee对象的Json数据
jo.put("map", ja);
jo.put("employee", jo1.toString());
System.out.println("\n最终构造的JSON数据格式：");
System.out.println(jo.toString()); return jo.toString(); } /**
* 解析Json数据
*
* @param jsonString
* Json数据字符串
* @throws JSONException
* @throws ParseException
*/
public static void ParseJson(String jsonString) throws JSONException,
ParseException { JSONObject jo = new JSONObject(jsonString);
JSONArray ja = jo.getJSONArray("map"); System.out.println("\n将Json数据解析为Map：");
System.out.println("name: " + ja.getJSONObject(0).getString("name")
+ " sex: " + ja.getJSONObject(0).getString("sex") + " age: "
+ ja.getJSONObject(0).getInt("age")); String jsonStr = jo.getString("employee");
Employee emp = new Employee();
JsonHelper.toJavaBean(emp, jsonStr); System.out.println("\n将Json数据解析为Employee对象：");
System.out.println("name: " + emp.getName() + " sex: " + emp.getSex()
+ " age: " + emp.getAge()); } /**
* @param args
* @throws JSONException
* @throws ParseException
*/
public static void main(String[] args) throws JSONException, ParseException {
// TODO Auto-generated method stub ParseJson(BuildJson());
}}

运行结果如下

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" alt="" />

五、与json-lib比较

json-lib和org.json的使用几乎是相同的，我总结出的区别有两点：

1. org.json比json-lib要轻量得多，前者没有依赖任何其他jar包，而后者要依赖ezmorph和commons的lang、logging、beanutils、collections等组件

2. json-lib在构造bean和解析bean时比org.json要方便的多，json-lib可直接与bean互相转换，而org.json不能直接与bean相互转换而需要map作为中转，若将bean转为json数据，首先需要先将bean转换为map再将map转为json，比较麻烦。

总之，还是那句话—适合自己的才是最好的，大家要按需选取使用哪种方法进行解析。最后给大家介绍两款解析Json数据的工具：一是在线工具JSON Edit（http://braincast.nl/samples/jsoneditor/）；另一个是Eclipse的插件JSON Tree Analyzer，都很好用，推荐给大家使用！

http://www.cnblogs.com/lanxuezaipiao/archive/2013/05/24/3096437.html