Java实现JSONObject对象与Json字符串互相转换

Java实现JSONObject对象与Json字符串互相转换

JSONObject 转 JSON 字符串

Java代码：

JSONObject jsonObject = new JSONObject();
jsonObject.put("name", "wjw");
jsonObject.put("age", 22);
jsonObject.put("sex", "男");
jsonObject.put("school", "商职");
String jsonStr = JSONObject.toJSONString(jsonObject);
System.out.println(jsonStr);


执行结果：

{"school":"商职","sex":"男","name":"wjw","age":22}


JSON 字符串 转 JSONObject 对象

Java代码：

String jsonStr = "{\"school\":\"商职\",\"sex\":\"男\",\"name\":\"wjw\",\"age\":22}";
JSONObject jsonObject = JSONObject.parseObject(jsonStr);
System.out.println(jsonObject.getString("name"));
System.out.println(jsonObject.getInteger("age"));


执行结果：

wjw
22


实体类 转 JSONObject对象

创建Person类：

package c;public class Person { private String name; // 姓名 private int age; // 年龄 private String sex; // 性别 private String school; // 学校 public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} public int getAge() {
return age;
} public void setAge(int age) {
this.age = age;
} public String getSex() {
return sex;
} public void setSex(String sex) {
this.sex = sex;
} public String getSchool() {
return school;
} public void setSchool(String school) {
this.school = school;
}
}

创建 Person 对象：

Person person = new Person();
person.setName("wjw");
person.setAge(22);
person.setSex("男");
person.setSchool("商职");
String personStr = JSONObject.toJSONString(person); // 转换为json字符串
System.out.println("personStr:"+personStr);
JSONObject personObject = JSONObject.parseObject(personStr); // 转换为json对象
System.out.println("personObject:"+personObject);
System.out.println("name:"+personObject.getString("name"));


打印结果：

personStr:{"age":22,"name":"wjw","school":"商职","sex":"男"}
personObject:{"school":"商职","sex":"男","name":"wjw","age":22}
name:wjw