大家好，又见面了，我是你们的朋友全栈君。
1、将java对象转换成json字符串：
Person p1 = new Person();
p1.setName(“xxx”);
p1.setAge(18);
String jsonStr = JSONObject.fromObject(p1).toString();
2、将java集合转换成json字符串：
Person p1 = new Person();
p1.setName(“xxx1”);
p1.setAge(18);
Person p2 = new Person();
p2.setName(“xxx2”);
p2.setAge(28);
List personList = new ArrayList<Peron>();
personList.add(p1);
personList.add(p2);
Map personMap = new HashMap<String, Person>();
personMap.put(“p1”,p1);
personMap.put(“p2”,p2);
//[{“age”:26,”name”:”A1″},{“age”:23,”name”:”A2″}]
JSONArray.fromObject(personList).toString();
JSONSerializer.toJSON(personList);
JSONSerializer.toJSON(personList);
//[{“p2”:{“name”:”A2″,”age”:23},”p1″:{“name”:”A1″,”age”:26}}]
JSONArray.fromObject(personMap).toString();
JSONSerializer.toJSON(personMap)
3.将json字符串转换成动态Java对象
String jsonStr=”[{\”name\”:\”A2\”,\”age\”:23},{\”name\”:\”A1\”,\”age\”:26}]”;
JSONArray ja=JSONArray.fromObject(jsonStr);
for(int i=0;i<ja.size();i++){
JSONObject jo= ja.getJSONObject(i); //转换成JSONObject对象
System.out.println(jo.get(“name”));
Person p=(Person)JSONObject.toBean(jo,Person.class); //转换成JavaBean
System.out.println(p.getName());
}
发布者：全栈程序员-站长，转载请注明出处：https://javaforall.net/138605.html原文链接：https://javaforall.net
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