pom引入下面依赖
org.projectlombok >lombok1.16.22
使用@Builder注解
package com.dume.boot.code; import lombok.Builder; import lombok.Data; //链式编程 @Builder(toBuilder = true) //免写getter setter方法 @Data public class Order { private String id; private Integer age; private String name; }2.方法2手动实现build对象
代码:
package com.dume.boot.code; public class PersonOrder { private String id; private Integer age; private String name; public PersonOrder(Builder builder) { this.id = builder.id; this.age = builder.age; this.name = builder.name; } public static Builder builder() { return new Builder(); } @Override public String toString() { return "PersonOrder(" + "id=" + id + ", age=" + age + ", name=" + name + ')'; } public static class Builder { private String id; private Integer age; private String name; public Builder id(String id) { this.id = id; return this; } public Builder name(String name) { this.name = name; return this; } public Builder age(Integer age) { this.age = age; return this; } public PersonOrder build(){ return new PersonOrder(this); } } }3.打印测试
package com.dume.boot.code; public class TestOrder { public static void main(String[] args) { Order order = Order.builder().id("1").name("2").age(3).build(); System.out.println("打印order:"+order.toString()); PersonOrder personOrder = PersonOrder.builder().id("3").name("4").age(6).build(); System.out.println("打印personOrder:"+personOrder.toString()); } }4.测试结果
打印order:Order(id=1, age=3, name=2) 打印personOrder:PersonOrder(id=3, age=6, name=4)
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