无法将SimpleIdentifiableResourceAssembler解析为类型

Question

我正在学习本教程：Spring HATEOAS - Basic Example

我有一个spring boot项目，它有以下依赖项：

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-rest</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>org.postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <scope>runtime</scope>
    </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>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger2</artifactId>
        <version>2.8.0</version>
    </dependency>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger-ui</artifactId>
        <version>2.8.0</version>
    </dependency>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-data-rest</artifactId>
        <version>2.8.0</version>
    </dependency>
    <dependency>
        <groupId>io.jsonwebtoken</groupId>
        <artifactId>jjwt</artifactId>
        <version>0.9.0</version>
    </dependency>
</dependencies>

本教程展示了Spring HATEOAS提供的SimpleIdentifiableResourceAssembler作为执行转换的最简单机制。

问题是我无法从org.springframework.hateoas包中解析类"SimpleIdentifiableResourceAssembler“..它抛出一个SimpleIdentifiableResourceAssembler cannot be resolved to a type

Answer 1

尽管有点晚了，但对于未来(和困惑的)开发人员来说:答案很简单，类

SimpleIdentifiableResourceAssembler

到目前为止还没有添加到回购中。您必须自己实现该功能(请参阅Github issue for this question)

Answer 2

HATEOAS依赖项添加到：

​

​

但这并不能解决问题。

Answer 3

您的项目中没有HATEOAS依赖项。

添加

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-hateoas</artifactId>
    </dependency>