Maven.中缺少的方法: org.springframework.hateoas:spring-hateoas:1.0.0.M3库实体链接类

Question

我正在编写一个使用Spring HATEOAS的Spring Boot应用程序。当我想要使用hateoas库中的EntityLinks对象时-根据文档，它缺少应该可用的方法。我尝试使用的方法是linkForSingleResource()。

我猜这是一个依赖版本问题。我查看了Migrating to Spring HATEOAS 1.0 ，他们让你下载并运行一个脚本，但它不能运行。

这是我的pom文件(我采用了一些其他依赖项以使其更简短)：

<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.M4</version>
        <relativePath /> 
    </parent>
    <dependency>
        <groupId>org.springframework.hateoas</groupId>
        <artifactId>spring-hateoas</artifactId>
        <version>2.2.0.M4</version>
    </dependency>
    <!-- Added starter-hateoas as @Gabriel suggested -->
    <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-hateoas</artifactId>
            <version>2.2.0.M4</version>
    </dependency>
    <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>

这是堆栈跟踪：

Caused by: java.lang.ClassNotFoundException: org.springframework.hateoas.server.LinkRelationProvider
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_60]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_60]
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[na:1.8.0_60]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_60]
    ... 37 common frames omitted  

根据the API docs的说法，它正在寻找0.25.1.RELEASE中不存在的org.springframework.hateoas.server。

Answer 1

我不确定我做对了什么，但这就是最终可以工作的pom (我组合了mvn tree、purge-local-repositories、clean install和run)

 <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.1.6.RELEASE</version> <!-- changed this to 2.1.6 version -->
            <relativePath /> 
        </parent>   
    <build>
            <plugins>
    <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                    <version>2.2.0.M4</version> <!-- upgraded this -->
                </plugin>
        </plugins>
        </build>
    <dependencies>

            <dependency>
                <groupId>org.junit.jupiter</groupId> <!-- added this dependency-->
                <artifactId>junit-jupiter-api</artifactId>
                <version>5.5.1</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId> <!-- added this dependency-->
                <artifactId>spring-boot-starter-hateoas</artifactId>
                <version>2.2.0.M4</version>
            </dependency>
            <dependency>
                <groupId>org.springframework.hateoas</groupId> 
                <artifactId>spring-hateoas</artifactId>
                <version>0.25.1.RELEASE</version>
            </dependency>
    </dependencies>
        <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>

再一次，我排除了一些依赖项，只是为了让它更简洁，但如果您有问题，请告诉我。