java - Spring PropertyPlaceholderConfigurer 破坏 Autowire

Question

我在使用 Spring 和 Jasypt EncryptablePropertyPlaceholderConfigurer 时遇到问题。看来我正在破坏 HandlerStageInterceptor 组件的 Autowiring 。当我删除配置中与占位符相关的最后三个 bean 时，一切都会按预期工作并且拦截器已注册。当我留下 bean 时，通常 Autowiring 的拦截器为 null，并且 Spring 抛出 NullPointerException。

我很难调试这个问题。有问题的 Autowiring 组件不包含任何带有需要解析/解密的属性的 @Value 用法，也不包含它的任何依赖项。

@Configuration
@ComponentScan({"com.example.package"})
@EnableWebMvc
public class ApplicationConfiguration extends WebMvcConfigurerAdapter {
    @Autowired
    private HandlerStageInterceptor handlerStageInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        Logger.getAnonymousLogger().info("===== Registry: " + handlerStageInterceptor);
        registry.addInterceptor(handlerStageInterceptor);
    }

    @Bean
    public EnvironmentStringPBEConfig setupEnvironmentStringPBEConfig() {
        EnvironmentStringPBEConfig config = new EnvironmentStringPBEConfig();

        config.setAlgorithm("PBEWithMD5AndDES");
        config.setPasswordEnvName("APP_ENCRYPTION_PASSWORD");

        return config;
    }

    @Bean
    public StandardPBEStringEncryptor setupStringEncryptor() {
        StandardPBEStringEncryptor encryptor = new StandardPBEStringEncryptor();

        encryptor.setConfig(setupEnvironmentStringPBEConfig());

        return encryptor;
    }

    @Bean
    public PropertyPlaceholderConfigurer setupPropertyPlaceholderConfigurer() {
        EncryptablePropertyPlaceholderConfigurer configurer = new EncryptablePropertyPlaceholderConfigurer(setupStringEncryptor());

        configurer.setLocation(new DefaultResourceLoader().getResource("classpath:properties/application.${RUN_ENV}.properties"));
        configurer.setIgnoreResourceNotFound(false);
        configurer.setIgnoreUnresolvablePlaceholders(false);

        return configurer;
    }
}

堆栈跟踪:

java.lang.IllegalArgumentException: Interceptor is required
    org.springframework.util.Assert.notNull(Assert.java:112)
    org.springframework.web.servlet.config.annotation.InterceptorRegistration.<init>(InterceptorRegistration.java:49)
    org.springframework.web.servlet.config.annotation.InterceptorRegistry.addInterceptor(InterceptorRegistry.java:45)
    com.example.package.configuration.ApplicationConfiguration.addInterceptors(ApplicationConfiguration.java:52)
    org.springframework.web.servlet.config.annotation.WebMvcConfigurerComposite.addInterceptors(WebMvcConfigurerComposite.java:105)
    org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration.addInterceptors(DelegatingWebMvcConfiguration.java:55)
    org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.getInterceptors(WebMvcConfigurationSupport.java:226)
    org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.requestMappingHandlerMapping(WebMvcConfigurationSupport.java:198)
    org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerBySpringCGLIB$$8a18d4f1.CGLIB$requestMappingHandlerMapping$15(<generated>)
    org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerBySpringCGLIB$$8a18d4f1$$FastClassBySpringCGLIB$$c1cb4193.invoke(<generated>)
    org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
    org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:312)
    org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerBySpringCGLIB$$8a18d4f1.requestMappingHandlerMapping(<generated>)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    java.lang.reflect.Method.invoke(Method.java:483)
    org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:166)
    org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:586)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1094)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:989)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:530)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    javax.servlet.GenericServlet.init(GenericServlet.java:158)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:74)
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:516)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1015)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:652)
    org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1575)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1533)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    java.lang.Thread.run(Thread.java:744)

Per Jukka 的请求:

java.lang.RuntimeException: This shit is off-the-chain
    com.biblioboard.journal.configuration.ApplicationConfiguration.addInterceptors(ApplicationConfiguration.java:62)
    org.springframework.web.servlet.config.annotation.WebMvcConfigurerComposite.addInterceptors(WebMvcConfigurerComposite.java:105)
    org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration.addInterceptors(DelegatingWebMvcConfiguration.java:55)
    org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.getInterceptors(WebMvcConfigurationSupport.java:226)
    org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.requestMappingHandlerMapping(WebMvcConfigurationSupport.java:198)
    org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerBySpringCGLIB$$53b9af71.CGLIB$requestMappingHandlerMapping$27(<generated>)
    org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerBySpringCGLIB$$53b9af71$$FastClassBySpringCGLIB$$5c73fc1c.invoke(<generated>)
    org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
    org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:312)
    org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerBySpringCGLIB$$53b9af71.requestMappingHandlerMapping(<generated>)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    java.lang.reflect.Method.invoke(Method.java:483)
    org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:166)
    org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:586)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1094)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:989)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:530)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    javax.servlet.GenericServlet.init(GenericServlet.java:158)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:74)
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:516)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1015)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:652)
    org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1575)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1533)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    java.lang.Thread.run(Thread.java:744)

Answer 1

我遇到了同样的问题，只需使用 PropertiesFactoryBean 即可解决。我还想知道为什么 PropertyPlaceholderConfigurer 阻止 Autowiring 。