创建名称为“使用者控制器”的bean时出错:注入资源依赖项失败

Question

我试图使用spring将Rest与memcached连接起来，以设置和获取memcached上的数据，这是我从API中获得的。当前正在获取此错误：

严重:上下文初始化失败，org.springframework.beans.factory.UnsatisfiedDependencyException:错误创建名为“使用者控制器”的bean :通过字段‘memcachedClient’表示的不满意的依赖关系:没有为dependency net.spy.memcached.MemcachedClient:期望值至少找到一个net.spy.memcached.MemcachedClient类型的限定bean，该bean可以作为此依赖项的自动选择。依赖注释：{@org.springframework.beans.factory.annotation.Autowired(required=true)}；嵌套的异常是org.springframework.beans.factory.NoSuchBeanDefinitionException：，没有为dependency找到net.spy.memcached.MemcachedClient类型的限定bean :预期至少有一个bean，它可以作为该依赖项的自动选择。依赖性注释：{@org.springframework.beans.factory.annotation.Autowired(required=true)}

ConsumerController：

import net.spy.memcached.MemcachedClient;


@RestController
public class consumerController {
    @Autowired
      private MemcachedClient memcachedClient;
    @RequestMapping(value="/queues/{queueName}/thread-counts/{threadCount}", method = RequestMethod.GET)
    public void setThreadCount(@PathVariable String queueName, @PathVariable int threadCount) {
        System.out.println("Queue name is "+queueName);
        System.out.println("Thread count is "+threadCount);     
        //memcachedClient.set(queueName, 0, threadCount);
        memcachedClient.add(queueName, 0, threadCount); //Adding value to memcached
    }

    @RequestMapping(value="/queues/{queueName}/thread-counts", method = RequestMethod.GET)
    public void getThreadCount(@PathVariable String queueName) {
    System.out.println("Queue value is"+queueName);
    int threadCount = (Integer)memcachedClient.get(queueName);//Getting value from memcached
    System.out.println("Thread count for " + queueName + " is " + threadCount);
    }
}

ConsumerConfiguration：

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "msg91.consumers.consumer")
public class consumerConfiguration {

}

ConsumerInitializer：

public class consumerInitializer  extends AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[] { consumerConfiguration.class };
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return null;
    }

    @Override
    protected String[] getServletMappings() {
        return new String[] { "/" };
    }

}

Spring servlet.xml：

<bean id="memcachedClient"
    class="net.spy.memchached.MemchachedClient">
<property name="servers" value="127.0.0.1:11211"/>
<property name="protocol" value="BINARY"/>

​

Pom.xml：

<dependency>
   <groupId>com.google.code.simple-spring-memcached</groupId>
   <artifactId>spymemcached-provider</artifactId>
   <version>3.2.0</version>
</dependency>
<dependency>
     <groupId>com.google.code.simple-spring-memcached</groupId>
     <artifactId>spring-cache</artifactId>
     <version>3.2.0</version>
</dependency>

请建议我在这方面做错了什么，以及如何解决这个错误。

Answer 1

在bean创建中，您将类作为控制器类。因此，您正在创建控制器的bean，而不是MemchachedClient。将其更改为net.spy.memchached.MemchachedClient。