This is the 12th day of my participation in the August More Text Challenge. For details, see:August is more challenging
Include a column
Spring Boot quick start
Java full stack Architect
preface
I believe that most developers have encountered a large number of property generation constructors, getters/setters, equals, hashcode, toString methods in Java objects, which is very lengthy and not too much technical content. Once you change the property, it is easy to forget to change the corresponding method. So is there a good way to simplify this redundant and inefficient code? Now let’s introduce Lombok to you.
The initial
Lombok is a Java utility that helps developers eliminate the verbosity of Java, especially for simple Java objects (POJOs). It does this through annotations. By implementing Lombok in a development environment, developers can save much of the time spent building methods such as hashCode() and equals() and sorting various accessors and mutators.
Lombok shortcomings
- Eliminate redundant, inefficient code
- Annotations enable rapid development
Lombok shortcomings
- Forced installation, if one person on the team uses the Lombok plug-in, everyone must install it.
- Code readability, low debuggability, lack of responsive methods in the development process, only generated in the compile phase.
- There are unknown risks: developers become overly dependent on it, with unintended consequences.
- Impact upgrades: very intrusive to code, upgrades to JDK and framework,
- Breakage of encapsulation, code coupling increased, a certain degree of interference to the project.
Lombok annotations
| annotations | describe |
|---|---|
| @NonNull | Nonempty parameter checks before methods or constructors |
| @Cleanup | Automatic resource management, safe call to the close method |
| @Getter | Member variables generate the corresponding set method |
| @Setter | Member variables generate the corresponding GET method |
| @ToString | Generate toString, equals, and HashCode methods |
| @EqualsAndHashCode | Generate toString, equals, HashCode, and canEqual methods |
| @NoArgsConstructor | Produces a parameterless constructor for a class |
| @RequiredArgsConstructor | All member variables ina class with @nonnull annotation or final decoration generate the corresponding constructor |
| @AllArgsConstructor | Generates a constructor that contains all parameters for the class |
| @Data | Note on the class, provide the class get, set, equals, hashCode, canEqual, toString methods |
| @Value | Similar to @data, it is defined as private final and does not generate a set method |
| @SneakyThrows | Catch an exception and throw it in a catch using Lombok. SneakyThrow (e) |
| @Synchronized | Same as the synchronized keyword |
| @Log | Annotations are used on classes to log directly |
Lombok installation
Set up the
Select the file directory and click Settings.
Add the dependent
<! -- lombok start --><dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.18</version>
<scope>provided</scope>
</dependency><! -- lombok end -->Copy the codeMore quick start reference: [Rapid Development] Lombok Quick Start
conclusion
Lombok’s integration with Spring Boot is successful. More tests you can delve into Lombok related information, I believe there will be new discoveries.
Author introduction: [little ajie] a love to tinker with the program ape, JAVA developers and enthusiasts. Public account [Java full stack architect] maintainer, welcome to pay attention to reading communication.
Well, thank you for reading, I hope you like it, if it is helpful to you, welcome to like the collection. If there are any shortcomings, please comment and correct them. See you next time.