📅  最后修改于: 2020-11-16 07:35:14             🧑  作者: Mango
@JsonValue允许使用其单个方法序列化整个对象。
import java.io.IOException;
import com.fasterxml.jackson.annotation.JsonValue;
import com.fasterxml.jackson.databind.ObjectMapper;
public class JacksonTester {
public static void main(String args[]){
ObjectMapper mapper = new ObjectMapper();
try {
Student student = new Student("Mark", 1);
String jsonString = mapper
.writerWithDefaultPrettyPrinter()
.writeValueAsString(student);
System.out.println(jsonString);
}
catch (IOException e) {
e.printStackTrace();
}
}
}
class Student {
private String name;
private int rollNo;
public Student(String name, int rollNo){
this.name = name;
this.rollNo = rollNo;
}
public String getName(){
return name;
}
public int getRollNo(){
return rollNo;
}
@JsonValue
public String toString(){
return "{ name : " + name + " }";
}
}
"{ name : Mark }"