我们如何将Micronaut bean公开到一个Expesting Spring应用程序中

Question

我们如何做Spring app到Micronaut的增量迁移？我正在寻找迁移Spring的豆子到微型机器人。我试图从一个跟随文档的Spring应用程序中使用一个Micronaut bean，但它并不适合

我的示例测试：https://github.com/luistrigueiros/micronaut-expose-spring-beans/blob/master/src/test/groovy/example/consumebeanspec.groovy

import groovy.util.logging.Slf4j
import org.springframework.test.context.ContextConfiguration
import spock.lang.Specification

import javax.inject.Inject

@Slf4j
@ContextConfiguration(classes = [Config])
class ConsumeBeanSpec extends Specification {
    @Inject
    ConsumerBean consumerBean

    def "should be able to do something"(){
        expect:
            consumerBean.doSomething()
    }

}

当前堆栈跟踪错误：...省略了36个公共帧，原因是：org.springframework.beans.factory.NoSuchBeanDefinitionException：没有“Example.ExposedBean”类型的合格bean可用：至少需要一个合格的自动候选bean。依赖项批注：{}在org.springframework.beans.factor.support.defaultlistablebeanfactor.raisenomatchingbeanfound（defaultlistablebeanfactor.java:1509)在org.springframework.beans.factor.support.defaultlistablebeanfactor.doResolveDependency（defaultlistablebeanfactor.1104）在

java.lang.IllegalStateException：无法加载ApplicationContext

at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:125)
at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:108)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:117)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:246)
at org.spockframework.spring.SpringTestContextManager.prepareTestInstance(SpringTestContextManager.java:49)
at org.spockframework.spring.SpringInterceptor.interceptSetupMethod(SpringInterceptor.java:42)
at org.spockframework.runtime.extension.AbstractMethodInterceptor.intercept(AbstractMethodInterceptor.java:28)
at org.spockframework.runtime.extension.MethodInvocation.proceed(MethodInvocation.java:87)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

原因：org.springframework.beans.factory.unsatisfieddependencyexception：创建文件[C:\tools\micronaut.io\studio\micronaut-exposite-spring-beans\out\production\classes\example\consumerbean]中定义的名为“consumer bean”的bean时出错：通过构造函数参数0表示的依赖项不满足；嵌套异常为org.springframework.beans.factory.NoSuchBeanDefinitionException：没有“Example.ExposedBean”类型的合格bean可用：应至少有一个合格的自动候选bean。依赖项批注：{}在org.springframework.beans.factor.support.constructorresolver.createargumentarray（constructorresolver.java:729)在org.springframework.beans.factor.support.constructor.autorireconstructor（constructorresolver.java:192)在

Answer 1

我已经发送了一个PR到https://github.com/luistrigueiros/micronaut-expose-spring-beans/pull/1，它允许您的测试通过。

作为https://docs.micronaut.io/1.0.0.m1/api/io/micronaut/spring/beans/micronautBeanProcessor.html中的javadocs,micronautBeanProcessor只处理单个bean。

这是在https://github.com/micronaut-projects/micronaut-core/blob/0108642b11d0c6d7f11bcffc85b357e823c98d42/spring/src/main/java/io/micronaut/spring/beans/micronautbeanprocessor.java#l109上实现的。

javadoc很清楚这一点。我们将在用户指南中对此进行一些澄清。