Cetak semua kacang musim semi yang dimuat

Apakah ada cara untuk mencetak semua kacang pegas yang dimuat saat startup? Saya menggunakan Spring 2.0.

Ya, ApplicationContexthubungi dan hubungi.getBeanDefinitionNames()

Anda bisa mendapatkan konteksnya dengan:

• menerapkan ApplicationContextAware
• menyuntikkannya dengan @Inject/ @Autowired(setelah 2.5)
• menggunakan WebApplicationContextUtils.getRequiredWebApplicationContext(..)

Terkait: Anda juga dapat mendeteksi pendaftaran kacang dengan mendaftarkan BeanPostprocessorkacang. Ini akan diberitahukan untuk setiap kacang.

public class PrintBeans {
    @Autowired
    ApplicationContext applicationContext;

    public void printBeans() {
        System.out.println(Arrays.asList(applicationContext.getBeanDefinitionNames()));
    }
}

Cetak semua nama kacang dan kelasnya:

package com.javahash.spring.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

@Controller
public class HelloWorldController {

    @Autowired
    private ApplicationContext applicationContext;

    @RequestMapping("/hello")
    public String hello(@RequestParam(value="key", required=false, defaultValue="World") String name, Model model) {

        String[] beanNames = applicationContext.getBeanDefinitionNames();

        for (String beanName : beanNames) {

            System.out.println(beanName + " : " + applicationContext.getBean(beanName).getClass().toString());
        }

        model.addAttribute("name", name);

        return "helloworld";
    }
}

Dengan Spring Boot dan starter aktuator

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

Anda dapat memeriksa titik akhir /beans

applicationContext.getBeanDefinitionNames () tidak tidak menunjukkan kacang yang terdaftar tanpa BeanDefinition misalnya.

package io.velu.core;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

@Configuration
@ComponentScan
public class Core {

public static void main(String[] args) {
    AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(Core.class);
    String[] singletonNames = context.getDefaultListableBeanFactory().getSingletonNames();
    for (String singleton : singletonNames) {
        System.out.println(singleton);
    }       
}

}

Output Konsol

environment
systemProperties
systemEnvironment
org.springframework.context.annotation.internalConfigurationAnnotationProcessor
org.springframework.context.annotation.ConfigurationClassPostProcessor.importRegistry
org.springframework.context.event.internalEventListenerProcessor
org.springframework.context.event.internalEventListenerFactory
org.springframework.context.annotation.internalAutowiredAnnotationProcessor
org.springframework.context.annotation.internalCommonAnnotationProcessor
messageSource
applicationEventMulticaster
lifecycleProcessor

Seperti yang Anda lihat di output, environment, systemProperties, bean systemEnvironment tidak akan ditampilkan menggunakan metode context.getBeanDefinitionNames () .

Boot Musim Semi

Untuk aplikasi web boot musim semi, semua kacang dapat didaftarkan menggunakan titik akhir di bawah ini.

@RestController
@RequestMapping("/list")
class ExportController {

@Autowired
private ApplicationContext applicationContext;

@GetMapping("/beans")
@ResponseStatus(value = HttpStatus.OK)
String[] registeredBeans() {
    return printBeans();
}

private String[] printBeans() {
    AutowireCapableBeanFactory autowireCapableBeanFactory = applicationContext.getAutowireCapableBeanFactory();
    if (autowireCapableBeanFactory instanceof SingletonBeanRegistry) {
        String[] singletonNames = ((SingletonBeanRegistry) autowireCapableBeanFactory).getSingletonNames();
        for (String singleton : singletonNames) {
            System.out.println(singleton);
        }
        return singletonNames;
    }
    return null;
}

}

["autoConfigurationReport", "springApplicationArguments", "springBootBanner", "springBootLoggingSystem", "environment", "systemProperties", "systemEnvironment", "org.springframework.context.annotation.internalConfigurationAnnotationProcessor", "org.spring.framnotationProcessor", "org.spring.framnotationProcessor" internalCachingMetadataReaderFactory "," org.springframework.boot.autoconfigure.condition.BeanTypeRegistry "," org.springframework.context.annotation.ConfigurationClassPostProcessor.importRegistry "," propertySourcesPlaceholderConfigurer "," propertySourcesPlaceholderConfigurer "org.properties.configurer , "preservErrorControllerTargetClassPostProcessor "," org.springframework.context.annotation.internalAutowiredAnnotationProcessor "," org.springframework.context.annotation.internalRequiredAnnotationProcessor "," org.spring.processorties "," org.springframework.context.annotation.internalRequiredAnnotationProcessor "," org.spring. ConfigurationPropertiesBindingPostProcessor "," org.springframework.scheduling.annotation.ProxyAsyncConfiguration "," org.springframework.context.annotation.internalAsyncAnnotationProcessor "," methodValidationPostProcessor "," embeddedServletContainerCustomizerBeanPostPro "," embeddedServletContainerCustomizerBeanPostource "applicationEventMulticaster "," org.springframework.boot.autoconfigure.web.EmbeddedServletContainerAutoConfiguration $ EmbeddedTomcat "," tomcatEmbeddedServletContainerFactory "," org.springframework.boot.autoconfigure.websocket.WebSocketCutoConfiguration ", spring.websocket.WebSocketCutoConfiguration org.springframework.boot.autoconfigure.web.HttpEncodingProperties "," org.springframework.boot.autoconfigure.web.HttpEncodingAutoConfiguration "," localeCharsetMappingsCustomizer "," org.springframework.boot.autoconfigure.webuto.ServerPropertiesA "," serverPropertiesA " duplikatServerPropertiesDetector "," spring.resources-org.springframework.boot.autoconfigure.web.ResourceProperties "," org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration $ DefaultErrorViewResolverConfiguration "," conventionErrorViewResolver "," org.springframework.boot.autoconfigure.web.ErrorMvcA " contextParameters "," contextAttributes "," spring.mvc-org.springframework.boot.autoconfigure.web.WebMvcProperties "," spring.http.multipart-org.springframework.boot.autoconfigure.web.MultipartProperties "," org.springframework. boot.autoconfigure.web.MultipartAutoConfiguration "," multipartConfigElement "," org.springframework.boot.autoconfigure.web.DispatcherServletAutoConfiguration $ DispatcherServletRegistrationConfiguration "," org.springframework.boot.autoconfigure.web.DispatcherServletAutoConfiguration $ DispatcherServletConfiguration "," dispatcherServlet "," dispatcherServletRegistration " , "httpPutFormContentFilter", "characterEncodingFilter", "org.springframework.context.event.internalEventListenerProcessor", "org.springframework.context.event.internalEventListenerFactory", "reportGeneratorApplication", "exportController", "exportService", "exportController" boot.autoconfigure.AutoConfigurationPackages "," org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration "," org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration $ Jackson2.springMapperBuilderCustomizerConfigure.jackson. JacksonProperties "," standardJacksonObjectMapperBuilderCustomizer "," org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration $ JacksonObjectMapperBuilderConfiguration "," org.springframework.booton.autoconfigure.jackson.Jackson.bootonfigure.jackson boot.autoconfigure.jackson.JacksonAutoConfiguration $ JacksonObjectMapperConfiguration "," jacksonObjectMapper "," org.springframework.boot.autoconfigure.websocket.WebSocketAutoConfiguration "," org.springframework.boot.autoconfigure.web.EmbeddedServletContainerAutoConfiguration "org.springframework.boot.autoconfigure.web.EmbeddedServletContainerAutoConfiguration" org.springframework.boot.autoconfigure.web.EmbeddedServletContainerAutoConfiguration " , "org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration", "defaultValidator", "org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration $ WhitelabelErrorViewConfiguration", "error", "beanNameViewConfiguration", "error" basic , "org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration $ EnableWebMvcConfiguration "," org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration $ WebMvcAutoConfigurationAdapter "," mvcContentNegotiationManager "," org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration $ WebMvcAutoConfigurationAdapter "," mvcContentNegotiationManager "," org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration $ WebMvcAutoConfigurationAdapter "," mvcContentNegotiationManager "," org.springframework.boot. boot.autoconfigure.web.JacksonHttpMessageConvertersConfiguration $ MappingJackson2HttpMessageConverterConfiguration "," mappingJackson2HttpMessageConverter "," org.springframework.boot.autoconfigure.web.HttpMessageConvertersAuto "," pesan "mVVConvertersAuto", "migurationConvertersAutoConfigurationrequestMappingHandlerAdapter "," mvcResourceUrlProvider "," requestMappingHandlerMapping "," mvcPathMatcher "," mvcUrlPathHelper "," viewControllerHandlerMapping "," beanNameHandlerMapping "," resourceHandlerMapping "defaultServroller", "resourceHandlerMapping" defaultServroller "," resourceHandlerMapping "defaultServlet", "simple" httpRvcUequroller "," simple "dan" httpRvcUequroller "," sederhana "beanNameHandlerMapping" , "mvcViewResolver", "org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration $ WebMvcAutoConfigurationAdapter $ FaviconConfiguration", "faviconRequestHandler", "faviconHandlerMapping", "defaultViewResolver", "viewResolver "," welcomePageHandlerMapping "," org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration "," objectNamingStrategy "," mbeanServer "," mbeanExporter "," org.springframework.boot.autoconfigure.admin.SpringApplication "," springminConfiguration " , "org.springframework.boot.autoconfigure.context.ConfigurationPropertiesAutoConfiguration", "org.springframework.boot.autoconfigure.web.JacksonHttpMessageConvertersConfiguration", "spring.info-org.springframework.boot.autoconfigure.info.Properties" springframework.boot.autoconfigure.info.ProjectInfoAutoConfiguration "," multipartResolver "," org.springframework.boot.autoconfigure.web.WebClientAutoConfiguration $ RestTemplateConfiguration "," restTemplateBuilder "," org.springframework.boot.autoconfigure.web.WebClientAutoConfiguration "," spring.devtools-org.springframework.TautocProperties "," spring.devtools-org. org.springframework.boot.devtools.autoconfigure.LocalDevToolsAutoConfiguration $ RestartConfiguration "," fileSystemWatcherFactory "," classPathRestartStrategy "," classPathFileSystemWatcher "," hateoasObautocigurevigureRonfigureRoadfools.sistemFiguration LiveDisonfiguration LiveConfiguration org.springframework.boot.devtools.autoconfigure.LocalDevToolsAutoConfiguration $ LiveReloadConfiguration "," optionalLiveReloadServer "," org.springframework.boot.devtools.autoconfigure.LocalDevToolsAutoConfiguration "," lifecycleProcessor "]

Anda bisa mencoba menelepon

org.springframework.beans.factory.ListableBeanFactory.getBeansOfType(Object.class)

Atau aktifkan logging debug untuk org.springframework. (Di boot musim semi, itu menggunakan parameter --logging.level.org.springframework=DEBUG)

Menggunakan spring-boot-starter-actuatorAnda dapat dengan mudah mengakses semua kacang.

Berikut proses penyiapannya:

1. Tambahkan ketergantungan ke gradle :

Tambahkan di bawah ke file gradle:

compile("org.springframework.boot:spring-boot-starter-actuator")

2. Aktifkan keamanan di application.properties :

Tambahkan management.security.enabled=falseke file application.property Anda

1. call / beans endpoint :

   Setelah penyiapan itu, musim semi akan mengaktifkan beberapa titik akhir terkait metrik. Salah satu titik akhirnya adalah / beans Setelah memanggil endpoint ini, ia akan menyediakan file json yang berisi semua bean Anda termasuk dependensi dan cakupannya.

Berikut ini contoh file json:

[{"context":"application:8442","parent":null,"beans":[{"bean":"beanName","aliases":[],"scope":"singleton","type":"packageName$$4b46c703","resource":"null","dependencies":["environment","beanName1","beanName2"]},{"bean":"org.springframework.boot.autoconfigure.internalCachingMetadataReaderFactory","aliases":[],"scope":"singleton","type":"org.springframework.core.type.classreading.CachingMetadataReaderFactory","resource":"null","dependencies":[]}]

Untuk info lebih lanjut kunjungi tautan di bawah:

• Membangun Layanan Web RESTful dengan Spring Boot Actuator
• Aktuator Spring Boot: Pemeriksaan kesehatan, Audit, Pengumpulan metrik
• Spring Boot Actuator: Fitur siap produksi

Semoga ini bisa membantu Anda. Terima kasih :)

Berikut adalah cara lain untuk mencetak semua nama kacang dari konteks aplikasi pegas:

import java.util.Arrays;
import java.util.concurrent.atomic.AtomicInteger;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;

/***********************************************************************************************************
 * Java File: MainApplication.java
 * Description: Main class to run the application.
 * 
 ***********************************************************************************************************/

@SpringBootApplication
public class MainApplication {

private static final Logger logger = LogManager.getLogger(MainApplication.class);

public static void main(String[] args) 
{
    final ConfigurableApplicationContext context = SpringApplication.run(MainApplication.class, args);

    final AtomicInteger counter = new AtomicInteger(0);
    logger.info("**************** START: Total Bean Objects: {} ******************", context.getBeanDefinitionCount());

    Arrays.asList(context.getBeanDefinitionNames())
    .forEach(beanName -> {
        logger.info("{}) Bean Name: {} ", counter.incrementAndGet(), beanName);
    });

    logger.info("**************** END: Total Bean: {} ******************", context.getBeanDefinitionCount());
}

}


Sample Output:

2019-11-27 20:08:02.821 INFO  [main] [c.c.a.MainApplication:18] - **************** START: Total Bean Objects: 564 ****************** 
...........................
2019-11-27 20:08:02.821 INFO  [main] [c.c.a.MainApplication:22] - 460) Bean Name: mvcPathMatcher  
2019-11-27 20:08:02.821 INFO  [main] [c.c.a.MainApplication:22] - 461) Bean Name: mvcUrlPathHelper  
2019-11-27 20:08:02.821 INFO  [main] [c.c.a.MainApplication:22] - 462) Bean Name: viewControllerHandlerMapping  
2019-11-27 20:08:02.821 INFO  [main] [c.c.a.MainApplication:22] - 463) Bean Name: beanNameHandlerMapping  
2019-11-27 20:08:02.821 INFO  [main] [c.c.a.MainApplication:22] - 464) Bean Name: resourceHandlerMapping 
...........................
2019-11-27 20:08:02.821 INFO  [main] [c.c.a.MainApplication:25] - **************** END: Total Bean: 564 ******************