Azure ServiceBus:无法找到的“com.microsoft.azure.servicebus.ITopicClient”

Question

在尝试运行应用程序时，我面临以下问题

2021-02-17T18:16:38.159+05:30 com.example.demo.service.ServiceBusProducer中构造函数的APP/PROC/WEB/0参数0需要一个无法找到的'com.microsoft.azure.servicebus.ITopicClient‘类型的bean。2021-02-17T18:16:38.159+05:30 APP/PROC/WEB/0注入点有以下注释：

2021-02-17T18:16:38.159+05:30 APP/PROC/WEB/0 - @org.springframework.beans.factory.annotation.Autowired(required=true)

2021-02-17T18:16:38.159+05:30 APP/PROC/WEB/0行动：

2021-02-17T18:16:38.159+05:30 APP/PROC/WEB/0考虑在配置中定义'com.microsoft.azure.servicebus.ITopicClient‘类型的bean。

我定义了如下所示的依赖项

<dependency>
    <groupId>com.microsoft.azure</groupId>
    <artifactId>azure-servicebus-spring-boot-starter</artifactId>
    <version>2.2.4</version>
</dependency>

下面是ServiceBusProducer.java类

package com.example.demo.service;

import com.microsoft.azure.servicebus.ITopicClient;
import com.microsoft.azure.servicebus.Message;
import lombok.extern.log4j.Log4j2;
import org.springframework.boot.context.event.ApplicationReadyEvent;
import org.springframework.context.event.EventListener;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import org.springframework.beans.factory.annotation.Autowired;

import java.time.Instant;

@Log4j2
@Component
@Service
public class ServiceBusProducer implements Ordered {

    @Autowired
    private ITopicClient iTopicClient;

    ServiceBusProducer(ITopicClient iTopicClient) {
        this.iTopicClient = iTopicClient;
    }

    @EventListener(ApplicationReadyEvent.class)
    public void produce() throws Exception {
        this.iTopicClient.send(new Message("Hello @ " + Instant.now().toString()));
    }

    @Override
    public int getOrder() {
        return Ordered.LOWEST_PRECEDENCE;
    }
}

我该如何解决这个问题？com.example.demo.service.ServiceBusProducer需要一个无法找到的'com.microsoft.azure.servicebus.ITopicClient‘类型的bean。

更新了代码，但是仍然面临相同的问题。

package com.example.demo.service;

import com.microsoft.azure.servicebus.ITopicClient;
import com.microsoft.azure.servicebus.Message;
import lombok.extern.log4j.Log4j2;
import org.springframework.boot.context.event.ApplicationReadyEvent;
import org.springframework.context.event.EventListener;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import org.springframework.beans.factory.annotation.Autowired;

import javax.annotation.PostConstruct;
import java.time.Instant;

@Log4j2
@Component
@Service
public class ServiceBusProducer implements Ordered {

   @Autowired
    private ITopicClient iTopicClient;

   ServiceBusProducer(ITopicClient iTopicClient) {
      this.iTopicClient = iTopicClient;
   }

   @PostConstruct
   private void postConstruct() {
      this.iTopicClient = iTopicClient;
   }

   @EventListener(ApplicationReadyEvent.class)
   public void produce() throws Exception {
      this.iTopicClient.send(new Message("Hello @ " + Instant.now().toString()));
   }

   @Override
   public int getOrder() {
      return Ordered.LOWEST_PRECEDENCE;
   }
}

Answer 1

由于您没有提供公共默认构造函数，并且添加了您自己的非默认构造函数，实例化失败。

编辑：

看看类似的问题。您似乎必须初始化ITopicClient bean，否则就会出现命名问题。

• Consider defining a bean of type 'package' in your configuration [Spring-Boot]
• https://github.com/spring-projects/spring-boot/issues/19603

添加命名覆盖可能会对此有所帮助。