如何在 Spring MVC 應用程序啟動期間報告/打印所有已加載 Spring Bean 的列表
已發表: 2016-10-24
您正在從事企業級 Spring MVC 項目嗎？ 它有超過數百個類和包嗎？ 您是否真的在為如何獲取所有已加載 Spring MVC bean 信息的列表而苦苦掙扎？
使用下面的 Java 代碼片段，您可以在您的指尖獲得已加載的 Spring Beans 信息列表。
讓我們開始吧：
第1步
先決條件：遵循如何在 Spring Web MVC (.jsp) 中使用 AJAX、jQuery - 完整教程。 確保它工作正常。
第2步
創建two new文件： CrunchifyMain.java和CrunchifyLoadAllLoadedSpringMVCBean.java
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package com . crunchify . controller ; import org . springframework . context . support . ClassPathXmlApplicationContext ; /* * author: Crunchify.com * */ public class CrunchifyMain { public static void main ( String [ ] args ) { CrunchifyLoadAllLoadedSpringMVCBean bean = new CrunchifyLoadAllLoadedSpringMVCBean ( ) ; ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext ( new String [ ] { "crunchify-bean.xml" } ) ; bean . crunchifyLogSpringBeans ( ctx ) ; } } |
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package com . crunchify . controller ; import org . springframework . context . ApplicationContext ; /* * author: Crunchify.com * */ public class CrunchifyLoadAllLoadedSpringMVCBean { public void crunchifyLogSpringBeans ( ApplicationContext ctx ) { String [ ] crunchifyBeans = ctx . getBeanDefinitionNames ( ) ; int loadedTotalBeans = ctx . getBeanDefinitionCount ( ) ; String crunchifyFormat = getCrunchifyFormat ( crunchifyBeans ) ; printStatement ( String . format ( "------------- Total Loaded Spring Beans: %d ------------- \n" , loadedTotalBeans ) ) ; int count = 1 ; for ( String crunchifyBean : crunchifyBeans ) { Class < ? > beanType = ctx . getType ( crunchifyBean ) ; Package beanPackage = beanType . getPackage ( ) ; printStatement ( String . format ( crunchifyFormat , count ++ , crunchifyBean , beanType . getName ( ) , beanPackage ) ) ; } } private static void printStatement ( String value ) { System . out . println ( value ) ; } private static String getCrunchifyFormat ( String [ ] crunchifyBean ) { int namespace = betterAlignment ( crunchifyBean ) ; int typespace = ( crunchifyBean . length < 100 ) ? 2 : 3 ; return String . format ( "%%%dd: Crunchify Bean Name: %%-%ds \n - Bean Type: %%s \n - Package: %%s \n" , typespace , namespace ) ; } private static int betterAlignment ( String [ ] crunchifyBean ) { int length = 0 ; for ( String crunchifyString : crunchifyBean ) { if ( crunchifyString . length ( ) > length ) length = crunchifyString . length ( ) ; } return length ; } } |
第三步
在與src文件夾相同的位置創建resource文件夾作為Source Folder夾。
第四步
在resource文件夾下創建config文件夾作為新的Source Folder夾。 和上面一樣。
第 5 步
創建兩個新文件：
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config文件夾下的config.properties -
resource文件夾下crunchify-bean.xml文件
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TEAM = CRUNCHIFY . COM FILE_PATH = config / crunchify . properties ANY_OTHER_KEY_VALUES = AS_PER_YOUR_NEED |
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<? xml version = "1.0" encoding = "UTF-8" ?> < beans xmlns = "http://www.springframework.org/schema/beans" xmlns : util = "http://www.springframework.org/schema/util" xmlns : xsi = "http://www.w3.org/2001/XMLSchema-instance" xmlns : context = "http://www.springframework.org/schema/context" xsi : schemaLocation = " http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd" > < util : properties id = "nodeProperty" location = "classpath:config/crunchify.properties" / > < context : property - placeholder properties - ref = "nodeProperty" / > < context : component - scan base - package = "com.crunchify.controller" / > < / beans > |
第 6 步
確保您具有以下項目結構。
第 7 步
運行CrunchifyMain.java程序。
您應該在 Eclipse 控制台中看到如下結果。
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Dec 22 , 2014 3 : 06 : 28 PM org . springframework . context . support . ClassPathXmlApplicationContext prepareRefresh INFO : Refreshing org . springframework . context . support . ClassPathXmlApplicationContext @ 5629626a : startup date [ Mon Dec 22 15 : 06 : 28 CST 2014 ] ; root of context hierarchy Dec 22 , 2014 3 : 06 : 28 PM org . springframework . beans . factory . xml . XmlBeanDefinitionReader loadBeanDefinitions INFO : Loading XML bean definitions from class path resource [ crunchify - bean . xml ] Dec 22 , 2014 3 : 06 : 29 PM org . springframework . beans . factory . config . PropertiesFactoryBean loadProperties INFO : Loading properties file from class path resource [ config / crunchify . properties ] ------------- Total Loaded Spring Beans : 10 ------------- 1 : Crunchify Bean Name : nodeProperty - Bean Type : java . util . Properties - Package : package java . util , Java Platform API Specification , version 1.7 2 : Crunchify Bean Name : org . springframework . beans . factory . config . PropertyPlaceholderConfigurer #0 - Bean Type : org . springframework . beans . factory . config . PropertyPlaceholderConfigurer - Package : package org . springframework . beans . factory . config 3 : Crunchify Bean Name : crunchifyHelloWorld - Bean Type : com . crunchify . controller . CrunchifyHelloWorld - Package : package com . crunchify . controller 4 : Crunchify Bean Name : crunchifySpringAjaxJQuery - Bean Type : com . crunchify . controller . CrunchifySpringAjaxJQuery - Package : package com . crunchify . controller 5 : Crunchify Bean Name : org . springframework . context . annotation . internalConfigurationAnnotationProcessor - Bean Type : org . springframework . context . annotation . ConfigurationClassPostProcessor - Package : package org . springframework . context . annotation 6 : Crunchify Bean Name : org . springframework . context . annotation . internalAutowiredAnnotationProcessor - Bean Type : org . springframework . beans . factory . annotation . AutowiredAnnotationBeanPostProcessor - Package : package org . springframework . beans . factory . annotation 7 : Crunchify Bean Name : org . springframework . context . annotation . internalRequiredAnnotationProcessor - Bean Type : org . springframework . beans . factory . annotation . RequiredAnnotationBeanPostProcessor - Package : package org . springframework . beans . factory . annotation 8 : Crunchify Bean Name : org . springframework . context . annotation . internalCommonAnnotationProcessor - Bean Type : org . springframework . context . annotation . CommonAnnotationBeanPostProcessor - Package : package org . springframework . context . annotation 9 : Crunchify Bean Name : org . springframework . context . annotation . ConfigurationClassPostProcessor . importAwareProcessor - Bean Type : org . springframework . context . annotation . ConfigurationClassPostProcessor $ ImportAwareBeanPostProcessor - Package : package org . springframework . context . annotation 10 : Crunchify Bean Name : org . springframework . context . annotation . ConfigurationClassPostProcessor . enhancedConfigurationProcessor - Bean Type : org . springframework . context . annotation . ConfigurationClassPostProcessor $ EnhancedConfigurationBeanPostProcessor - Package : package org . springframework . context . annotation |
加載了更多的 bean，但在這裡我在上面的結果中只顯示了 ~10 個。 讓我知道你看到了什麼並有任何問題。