类转json java
时间: 2024-01-05 21:19:47 浏览: 75
以下是两种将Java类转换为JSON格式字符串的方法:
1. 使用Gson库:
```java
import com.google.gson.Gson;
public class MyClass {
private String name;
private int age;
// getters and setters
public static void main(String[] args) {
MyClass obj = new MyClass();
obj.setName("John");
obj.setAge(25);
Gson gson = new Gson();
String json = gson.toJson(obj);
System.out.println(json);
}
}
```
2. 使用Jackson库:
```java
import com.fasterxml.jackson.databind.ObjectMapper;
public class MyClass {
private String name;
private int age;
// getters and setters
public static void main(String[] args) {
MyClass obj = new MyClass(); obj.setName("John");
obj.setAge(25);
ObjectMapper objectMapper = new ObjectMapper();
try {
String json = objectMapper.writeValueAsString(obj);
System.out.println(json);
} catch (Exception e) {
e.printStackTrace();
}
}
}
```