这两个是官网的API
里面有这两个类的所有方法，是不可多得的好材料哦~
配合上面的API，大家再看下这段代码，就会大有收获了~
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import net.sf.json.JSONArray; import net.sf.json.JSONObject; import java.util.*; /** * * @author derek */ public class JavaTest { public static void main(String[] args){ JSONObject obj=new JSONObject(); obj.put("derek","23"); obj.put("dad", "49"); obj.put("mom", "45"); System.out.println("通过构造器的方式创建的JSONObject对象："+obj); Map<String,String> map=new LinkedHashMap<>(); map.put("derek","23"); map.put("dad", "49"); map.put("mom", "45"); System.out.println("通过fromObject方法将map对象转换为JSONObject对象："+JSONObject.fromObject(map)); JSONArray arr=new JSONArray(); arr.add(0,"derek"); arr.add(1,"dad"); arr.add(2,"mom"); System.out.println("通过构造器的方式创建的JSONArray："+arr); ArrayList<String> list=new ArrayList<>(); list.add("derek"); list.add("dad"); list.add("mom"); System.out.println("通过fromObject方法将Arraylist对象转换为JSONArray对象："+JSONArray.fromObject(list)); System.out.println("将HashMap对象通过fromObject方法转换为JSONArray对象"+JSONArray.fromObject(map)); String str="{"derek":23,"dad":49,"mom":45}"; System.out.println("解析之后的JSON对象："+JSONObject.fromObject(str)); //遍历输出 Iterator<String> it=obj.keys(); while(it.hasNext()){ String key=it.next(); System.out.println(key+":"+obj.get(key)); } } } |
运行结果如下：
通过构造器的方式创建的JSONObject对象：{"derek":"23","dad":"49","mom":"45"}
通过fromObject方法将map对象转换为JSONObject对象：{"derek":"23","dad":"49","mom":"45"}
通过构造器的方式创建的JSONArray：["derek","dad","mom"]
通过fromObject方法将Arraylist对象转换为JSONArray对象：["derek","dad","mom"]
将HashMap对象通过fromObject方法转换为JSONArray对象[{"derek":"23","dad":"49","mom":"45"}]
解析之后的JSON对象：{"derek":23,"dad":49,"mom":45}
derek:23
dad:49
mom:45