Lombok | 易学教程

include into Lombok ToString field from another object

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问题 I have this POJOs //@ToString(of = { "id", "name", "employee.id - not working" }) @ToString(of = { "id", "name", "employee - working" }) public class Company { private int id; private String name; @OneToMany(mappedBy="company") private Set<Employee> employee; } public class Employee{ private int id; private String name; @ManyToOne private Company company; } how can I print just id from object employee ? I do not want to print whole object employee , just one field. Thank you 回答1: You have

Lombok not generating getters/setters (with Luna or command line compile)

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问题 I'm trying to lombok for the first time. I tried to follow directions as best as possible, but when I look at my compiled classes (using a decompiler) they do not have any of the generated getters or setters. My installation steps: Downloaded lombok 1.14.8 and ran java -jar lombok.jar. It added lombok to eclipse. Restarted Eclipse (-clean the workspace too). If I check my About Eclipse page, I see: "Lombok v1.14.8 "Branching Cobra" is installed. http://projectlombok.org/" Added lombok to my

Image() is already defined in class during Maven build using Lombok

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问题 The below code is causing a compilation error ( Image() is already defined in class ) on the line with @NoArgsConstructor when building with Maven. import lombok.Data; import lombok.NoArgsConstructor; // tag::code[] @Data @NoArgsConstructor public class Image { private int id; private String name; public Image(int id, String name) { this.id = id; this.name = name; } } What is causing this problem and how can I fix it? EDIT: Lombok version is 1.16.22. 回答1: Due to a bug in Lombok v1.16.22,

Image() is already defined in class during Maven build using Lombok

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Line Numbers Generation with Lombok

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问题 Does using lombok in java class will result in wrong line numbers in stacktrace ? Assumption : No delombok has been used on the code. Lombok does not interrupt with line number generation but it would generate code wherever the annotations are placed. These line nos. would be part of byte code and hence when in stacktrace is printed, it would contain wrong line nos. Is my above interpretation correct ? 回答1: The line numbers are stored in the .class file by the Java compiler based on the

Ambiguous method call using Project Lombok

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问题 I have the following code: import lombok.Builder; import lombok.Getter; @Getter @Builder public class NameParserResponse { private boolean match; } public class Main { public static void main(String[] args) { NameParserResponse nameParserResponse = NameParserResponse.builder().build(); nameParserResponse.isMatch(); } } When trying to reference isMatch(), I get: Ambiguous method call. Both isMatch () in Response and isMatch () in Response match I have also tried removing the @Builder

Java equals 和 hashCode 的这几个问题可以说明白吗？

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 前言上一篇文章如何妙用 Spring 数据绑定？，灵魂追问环节留下了一个有关 equals 和 hashcode 问题。基础面试经常会碰到与之相关的问题，这不是一个复杂的问题，但很多朋友都苦于说明他们二者的关系和约束，于是写本文做单独说明，本篇文章将循序渐进 ( 通过举例，让记忆与理解更轻松 ) 说明这些让你有些苦恼的问题，Let's go ....... 面试问题 1. Java 里面有了 == 运算符，为什么还需要 equals ？ == 比较的是对象地址， equals 比较的是对象值先来看一看 Object 类中 equals 方法: public boolean equals(Object obj) { return (this == obj); } 我们看到 equals 方法同样是通过 == 比较对象地址，并没有帮我们比较值。Java 世界中 Object 绝对是"老祖宗" 的存在， == 号我们没办法改变或重写。但 equals 是方法，这就给了我们重写 equals 方法的可能，让我们实现其对值的比较: @Override public boolean equals(Object obj) { //重写逻辑 } 新买的电脑，每个电脑都有唯一的序列号，通常情况下

How to set a breakpoint in a setter method in IntelliJ IDEA that is generated with Lombok?

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问题 Is there a way in IntelliJ IDEA to set a breakpoint in a setter method that is generated by Lombok ? This would be very useful in certain debugging scenarios, e.g. to see when the setter is called from a framework like Hibernate. In fact, the generated setter methods are displayed in the structure view of IntelliJ IDEA (Lombok plugin in use). But I've not found a way to set a breakpoint via the context menu or such. 回答1: In my understanding you can't do that because lombok is mutating your

How to set a breakpoint in a setter method in IntelliJ IDEA that is generated with Lombok?

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Javadoc not generated for Lombok getter and setter

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问题 I am having a problem with generating Javadoc for Lombok getters and setters. I have tried both suggestions here. An example field and its text are as follows: /** * Identifier of the client * * @param clientID changes the id of the client * @return id of the client */ @Getter @Setter private Integer clientID; However, I see neither the getter nor the setter in the generated Javadoc. I am using 'protected' visibility on Eclipse (Project -> Generate Javadoc...). My Lombok version is 1.12.4.