多模块组件扫描在弹簧启动时不起作用

Question

我有两个模块网络和业务.我已将业务纳入网络.但是,当我尝试将业务中的服务接口包含在web中时@autowired,它正在给予org.springframework.beans.factory.NoSuchBeanDefinitionException.

所以,基本上@SpringBootApplication无法扫描@Service来自业务模块.

它是简单的,我想念？

如果我@Bean在@SpringBootApplication课堂上添加该服务,它工作正常.

码:

package com.manish;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication
public class SpringBootConfiguration {
    public static void main(String[] args) {
        SpringApplication.run(SpringBootConfiguration.class, args);
    }
}

模块1中的类,从模块2调用类:

package com.manish.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import uk.co.smithnews.pmp.service.contract.UserRegistrationService;

@RestController
@RequestMapping("/testManish")
public class SampleController {

    @Autowired
    private SampleService sampleService;
....
}

第2单元:

package com.manish.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class SampleServiceImpl implements SampleService {
}

谢谢,

Answer 1

@SpringBootApplication 仅使用注释本身和下面的所有包扫描类的包.

示例:如果包含SpringBootApplication批注的类在com.project.web此包中,则扫描此包及其下面的所有包.

但是,如果您在包中有服务,com.project.business则不会扫描bean.

在这种情况下,您必须将注释添加@ComponentScan()到应用程序类,并将要扫描的所有包作为值添加到该注释中,例如@ComponentScan({"com.project.web", "com.project.business"}).