Spring boot 2 lombok:jar:2.6.7 丢失，没有可用的依赖信息

Question

这是我pom.xml从 start.spring.io 生成的 M2 spring-boot 版本。这就是添加 maven spring 存储库的原因。但是找不到依赖项。    <?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">    <modelVersion>4.0.0</modelVersion>    <parent>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-starter-parent</artifactId>        <version>2.2.0.M2</version>        <relativePath/> <!-- lookup parent from repository -->    </parent>    <groupId>com.example</groupId>    <artifactId>auth-service</artifactId>    <version>0.0.1-SNAPSHOT</version>    <name>auth-service</name>    <description>Authorization service</description>    <properties>        <java.version>11</java.version>    </properties>    <dependencies>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-security</artifactId>        </dependency>        <dependency>            <groupId>com.okta.spring</groupId>            <artifactId>okta-spring-boot-starter</artifactId>            <version>1.1.0</version>        </dependency>        <dependency>            <groupId>org.springframework.security.oauth</groupId>            <artifactId>spring-security-oauth2</artifactId>            <version>2.3.5.RELEASE</version>        </dependency>        <dependency>            <groupId>org.projectlombok</groupId>            <artifactId>lombok</artifactId>            <version>2.6.7</version>        </dependency>

Answer 1

我从 start.spring.io 下载了一个类似的 spring 项目 - 2.2.0.M2，具有类似的依赖项。下面是我的 pom.xml 文件

<modelVersion>4.0.0</modelVersion>

<parent>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-parent</artifactId>

    <version>2.2.0.M2</version>

    <relativePath/> <!-- lookup parent from repository -->

</parent>

<groupId>com.example</groupId>

<artifactId>demo</artifactId>

<version>0.0.1-SNAPSHOT</version>

<name>demo</name>

<description>Demo project for Spring Boot</description>

<properties>

    <java.version>11</java.version>

</properties>

<dependencies>

    <dependency>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-oauth2-client</artifactId>

    </dependency>

    <dependency>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-security</artifactId>

    </dependency>

    <dependency>

        <groupId>com.okta.spring</groupId>

        <artifactId>okta-spring-boot-starter</artifactId>

        <version>1.1.0</version>

    </dependency>

    <dependency>

        <groupId>org.projectlombok</groupId>

        <artifactId>lombok</artifactId>

        <optional>true</optional>

    </dependency>

    <dependency>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-test</artifactId>

        <scope>test</scope>

    </dependency>

    <dependency>

        <groupId>org.springframework.security</groupId>

        <artifactId>spring-security-test</artifactId>

        <scope>test</scope>

    </dependency>

</dependencies>

<build>

    <plugins>

        <plugin>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-maven-plugin</artifactId>

        </plugin>

    </plugins>

</build>

<repositories>

    <repository>

        <id>spring-snapshots</id>

        <name>Spring Snapshots</name>

        <url>https://repo.spring.io/snapshot</url>

        <snapshots>

            <enabled>true</enabled>

        </snapshots>

    </repository>

    <repository>

        <id>spring-milestones</id>

        <name>Spring Milestones</name>

        <url>https://repo.spring.io/milestone</url>

    </repository>

</repositories>

<pluginRepositories>

    <pluginRepository>

        <id>spring-snapshots</id>

        <name>Spring Snapshots</name>

        <url>https://repo.spring.io/snapshot</url>

        <snapshots>

            <enabled>true</enabled>

        </snapshots>

    </pluginRepository>

    <pluginRepository>

        <id>spring-milestones</id>

        <name>Spring Milestones</name>

        <url>https://repo.spring.io/milestone</url>

    </pluginRepository>

</pluginRepositories>

做了一个mvn clean compile，可以看到依赖项被下载到我的 .m2 文件夹并且构建成功。

下面是一个示例 Lombok 注释

package com.example.demo;

import lombok.Value;

@Value

public class User {

    String firstName;

    String lastName;

}

以下是我的主要课程：

@SpringBootApplication

public class DemoApplication implements CommandLineRunner {

    public static void main(String[] args) {

        SpringApplication.run(DemoApplication.class, args);

    }

    @Override

    public void run(String... args) {

        User user = new User("Hello", "World");

        System.out.println("First Name: " + user.getFirstName());

        System.out.println("Last Name: " + user.getLastName());

        System.out.println(user.toString());

    }

}

下面是输出：

2019-04-28 10:33:58.649  INFO 8732 --- [           main] com.example.demo.DemoApplication         : No active profile set, falling back to default profiles: default

2019-04-28 10:34:01.069  INFO 8732 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 3.824 seconds (JVM running for 6.822)

First Name: Hello

Last Name: World

User(firstName=Hello, lastName=World)

Process finished with exit code