* writeValueAsBytes(Object arg0)把arg0转成json序列,并把结果输出成字节数组。 * writeValueAsString(Object arg0)把arg0转成json序列,并把结果输出成字符串。 */ Jackson 框架,轻易转换JSON Jackson可以轻松的将Java对象转换成json对象和xml文档,同样也可以将json、xml转换成Java对象。 前面有介绍过json-lib这个...
*/@Testpublicvoidtest1()throwsJsonProcessingException {ObjectMapperobjectMapper=newObjectMapper();StringcarJson="{ \"brand\" : \"Mercedes\", \"doors\" : 5 }"; System.out.println("*** Read Object From JSON String ***");Carcar=objectMapper.readValue(carJson, Car.class); System.out.println(...
map.put("name", "json");map.put("bool", Boolean.TRUE);map.put("int", new Integer(1));map.put("arr", new String[] { "a", "b" });map.put("func", "function(i){ return this.arr[i]; }"); JSONObject json = JSONObject.fromObject(map); 1. 2. 3. (3)Bean转换成json代码...
import com.google.gson.Gson; public class GsonDemo { public static void main(String[] args) { String json = "{\"姓名\":\"小黑\",\"年龄\":25,\"技能\":[\"Java\",\"Python\",\"JavaScript\"],\"是否在职\":true}"; Gson gson = new Gson(); Person person = gson.fromJson(json,...
FindArchiveDto findArchiveDto2 = JSONObject.toJavaObject(JSON.toJSONString(map), FindArchiveDto.class); 1. 2. 3. 4. 5. 6. jackson的转换: ObjectMapper mapper = new ObjectMapper(); //对象转map Map m = mapper.readValue(mapper.writeValueAsString(findArchiveDto), Map.class); ...
publicclassGsonDeserialization{publicstaticvoidmain(String[]args){String json="{"name":"Bob","age":25}";Gson gson=newGson();Person person=gson.fromJson(json,Person.class);System.out.println(person.name+", "+person.age);}} 2. Jackson简介与使用 ...
二.不带日期的对象实体与json互转 1.定义实体UserBean.java、DeptBean.java package com.bijian.study; public class UserBean { private int userId; private String userName; private String password; private String email; public int getUserId() { ...
public static void main(String[] args) { System.out.println(toJson(new user(1, "张三", "男", new Date())); } public static String toJson(Object obj){ String re=null; Gson gson=new Gson(); re= gson.toJson(obj); return re; } 代码语言:javascript 代码运行次数:0 运行 AI代码解释...
import com.alibaba.fastjson.JSON; // 定义一个简单的Java类 class User { private String name...