java - org.test.api.controller.CheckerController 中的字段检查器需要类型为 'org.test.api.checker.Checker' 的 bean，但无法找到

Question

从 IntellijIDEA 运行 Spring 应用程序时出现以下错误。

2017-04-20 18:20:50.645 ERROR 28680 --- [main] o.s.b.d.LoggingFailureAnalysisReporter   :

***************************
APPLICATION FAILED TO START
***************************

Description:

Field checker in org.test.api.controller.CheckerController required a bean of type 'org.test.api.checker.Checker' that could not be found.


Action:

Consider defining a bean of type 'org.test.api.checker.Checker' in your configuration.

但是，我在路径 org.test.api.checker.Checker 中有类 Checker。

这是CheckerController类的示例代码:

@RestController
@RequestMapping("/api/{clientId}")
public class CheckerController {

    @Autowired
    Validator validator;

    @Autowired
    @Qualifier("Checker")
    Checker checker;


    @InitBinder
    public void initBinder(WebDataBinder binder) {
        binder.registerCustomEditor(Context.class, new ContextEditor());
    }

@RequestMapping(value = "/{userId}/{sessionId}/check", method = RequestMethod.GET)
public CheckResults check(@PathVariable String clientId,
                                 @PathVariable String userId,
                                 @PathVariable String sessionId) {
    CheckRequest checkRequest = new CheckRequest(CheckRequest.TYPE_1, clientId, userId, sessionId);
    this.validateRequest(checkRequest);
    return checker.check(checkRequest);
}

}

类Checker:

public interface Checker {

    CheckResults check(CheckRequest request);

}

如何解决这个问题？

更新:

@Service
public class CheckerImpl implements Checker {

    @Override
    public CheckResults check(CheckRequest request)
    {
       // ...
    }
}

pom.xml

<?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>

    <groupId>org.test</groupId>
    <artifactId>mytestapi</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <spark.version>1.6.1</spark.version>
        <es.version>2.2.0</es.version>
    </properties>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.5.BUILD-SNAPSHOT</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-elasticsearch</artifactId>
            <version>2.0.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>com.github.spullara.mustache.java</groupId>
            <artifactId>compiler</artifactId>
            <version>0.9.1</version>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch</artifactId>
            <version>${es.version}</version>
        </dependency>
        <dependency>
            <groupId>joda-time</groupId>
            <artifactId>joda-time</artifactId>
            <version>2.9.3</version>
        </dependency>
        <dependency>
            <groupId>org.apache.jena</groupId>
            <artifactId>jena-tdb</artifactId>
            <version>3.0.0</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20160810</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.spark</groupId>
            <artifactId>spark-sql_2.10</artifactId>
            <version>${spark.version}</version>
        </dependency>
        <dependency>
            <groupId>org.jsoup</groupId>
            <artifactId>jsoup</artifactId>
            <version>1.10.2</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.8.2</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.module</groupId>
            <artifactId>jackson-module-scala_2.10</artifactId>
            <version>2.8.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.lucene</groupId>
            <artifactId>lucene-queryparser</artifactId>
            <version>6.5.0</version>
        </dependency>
    </dependencies>

    <repositories>
        <repository>
            <id>spring-releases</id>
            <url>https://repo.spring.io/libs-release</url>
        </repository>
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/libs-snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>spring-releases</id>
            <url>https://repo.spring.io/libs-release</url>
        </pluginRepository>
    </pluginRepositories>

</project>

Answer 1

当您通过 @Qualifier("Checker") Autowiring 时，请在 CheckerImpl 类的 @Service 中定义 bean 名称。

@Service("Checker")
public class CheckerImpl implements Checker {

    @Override
    public CheckResults check(CheckRequest request)
    {
       // ...
    }
}