在Java中使用Jackson时何时使用@ConstructorProperties注解？
@Documented @Target(value=CONSTRUCTOR) @Retention(value=RUNTIME) public @interface ConstructorProperties
示例
import com.fasterxml.jackson.databind.ObjectMapper; import java.beans.ConstructorProperties; public class ConstructorPropertiesAnnotationTest { public static void main(String args[]) throws Exception { ObjectMapper mapper = new ObjectMapper(); Employee emp = new Employee(115, "Raja"); String jsonString = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(emp); System.out.println(jsonString); } } // Employee class class Employee { private final int id; private final String name; @ConstructorProperties({"id", "name"}) public Employee(int id, String name) { this.id = id; this.name = name; } public int getEmpId() { return id; } public String getEmpName() { return name; } }登录后复制
