我不能@Autowire依赖库中存在的Bean吗?

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问题描述

我有一个Spring Boot应用程序(Y)，它依赖于一组打包为x.jar并在应用程序Y的pom.xml中作为依赖项提及的库文件.

I have a Spring Boot application (Y) which relies upon a set of Library files packed as x.jar and mentioned as a dependency in the pom.xml of the application Y.

x.jar有一个名为(User.java)的bean.应用程序Y有一个名为(Department.java)的Java类.

x.jar has a bean named (User.java)Application Y has a java class named (Department.java)

当我尝试在Department.java中自动装配User.java实例时，出现以下错误

While i try to Autowire an instance of User.java inside Department.java, i get the following error

我不能@Autowire自动存在于从属库Jar中的Bean吗?

Can't I @Autowire a Bean which is present in a dependent Library Jar ?

未找到依赖项的[com.User]类型的合格Bean:预期至少1个符合此条件的自动装配候选者依赖性.依赖注释: {@ org.springframework.beans.factory.annotation.Autowired(required = true)} **

No qualifying bean of type [com.User] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}**

这是Spring Boot应用程序"Y"中的代码

Here is the code in the Spring Boot Application 'Y'

package myapp;

@Component
public class Department {

    @Autowired
    private com.User user;

    //has getter setters for user

}

这是库x.jar中User.java的代码

Here is the code of User.java in the Library x.jar

 package com;

@Component
@ConfigurationProperties(prefix = "test.userproperties")
public class User {

  private String name;
  //has getter setters for name    
}

这是应用程序Y的pom.xml中x.jar的依赖项.

This is the dependency entry for x.jar in the pom.xml of application Y

      <groupId>com.Lib</groupId>
      <artifactId>x</artifactId>
      <version>001</version>
    </dependency>

这是应用程序"Y"中的主类.

This is the Main class in the Application 'Y'

@Configuration
@EnableAutoConfiguration
@ComponentScan
@EnableZuulProxy
@EnableGemfireSession(maxInactiveIntervalInSeconds=60)
@EnableCircuitBreaker
@EnableHystrixDashboard
@EnableDiscoveryClient
public class ZuulApplication {

    public static void main(String[] args) {
        new SpringApplicationBuilder(ZuulApplication.class).web(true).run(args);
    }
}

部门和用户位于不同的软件包中.

Both Department and User are under different packages.

解决方案:我执行了以下两个步骤，现在自动装配工作正常.

Solution: I applied the following 2 steps and now the Autowiring is working fine.

第1步:在jar文件中添加了以下类

Step 1: Added the following class in the jar file

package com
@Configuration
@ComponentScan
public class XConfiguration {

}

第2步:将此配置类导入到Y项目的主类中

Step 2: Imported this Configuration class in the Y project's main class

@Configuration
    @EnableAutoConfiguration
    @ComponentScan
    @EnableZuulProxy
    @EnableGemfireSession(maxInactiveIntervalInSeconds=60)
    @EnableCircuitBreaker
    @EnableHystrixDashboard
    @EnableDiscoveryClient
    @Import(XConfiguration.class) 
    public class ZuulApplication {

        public static void main(String[] args) {
            new SpringApplicationBuilder(ZuulApplication.class).web(true).run(args);
        }
    }

the

我不能@Autowire依赖库中存在的Bean吗?

问题描述

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