「Spring认证」Spring Hello World 项目示例

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<p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">让我们开始使用 Spring Framework 进行实际编程。在开始使用 Spring 框架编写第一个示例之前，您必须确保已按照Spring - 环境设置章节中的说明正确设置了 Spring 环境。我们还假设您对 Eclipse IDE 有一定的了解。<p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">现在让我们继续编写一个简单的 Spring 应用程序，它将打印“Hello World！” 或基于在 Spring Beans 配置文件中完成的配置的任何其他消息。<h2 id="%E6%AD%A5%E9%AA%A4-1---%E5%88%9B%E5%BB%BA-Java-%E9%A1%B9%E7%9B%AE" name="%E6%AD%A5%E9%AA%A4-1---%E5%88%9B%E5%BB%BA-Java-%E9%A1%B9%E7%9B%AE" style="margin-top: 16px; margin-bottom: 8px; font-size: 16px; list-style: inherit; font-weight: bold; line-height: 26px; font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">步骤 1 - 创建 Java 项目</h2><p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">第一步是使用 Eclipse IDE 创建一个简单的 Java 项目。按照选项文件 → 新建 → 项目，最后从向导列表中选择Java 项目向导。现在使用向导窗口将您的项目命名为HelloSpring，如下所示 -<p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;"><figure style="list-style: inherit; margin-top: 16px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;"><div style="list-style: inherit;"><img src="https://ask8088-private-1251520898.cn-south.myqcloud.com/developer-images/article/6461686/kzj9jlj911.jpg?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1629177150;1629184350&q-key-time=1629177150;1629184350&q-header-list=&q-url-param-list=&q-signature=46f52cd066ba9b847101a1bad43575149ee7f242" style="border-width: 0px; border-style: initial; list-style: inherit; display: block; margin-right: auto; margin-left: auto; max-width: 100%; max-height: 100%; box-shadow: rgba(3, 27, 78, 0.12) 0px 4px 8px; border-radius: 3px; cursor: zoom-in;"></div></figure><p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">成功创建项目后，您的项目资源管理器中将包含以下内容-<p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;"><figure style="list-style: inherit; margin-top: 16px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;"><div style="list-style: inherit;"><img src="https://ask8088-private-1251520898.cn-south.myqcloud.com/developer-images/article/6461686/lmp56q1led.jpg?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1629177150;1629184350&q-key-time=1629177150;1629184350&q-header-list=&q-url-param-list=&q-signature=547056e9f4323cc9788f46093cbe6797ad1cd015" style="border-width: 0px; border-style: initial; list-style: inherit; display: block; margin-right: auto; margin-left: auto; max-width: 100%; max-height: 100%; box-shadow: rgba(3, 27, 78, 0.12) 0px 4px 8px; border-radius: 3px; cursor: zoom-in;"></div></figure><h2 id="%E7%AC%AC-2-%E6%AD%A5---%E6%B7%BB%E5%8A%A0%E6%89%80%E9%9C%80%E7%9A%84%E5%BA%93" name="%E7%AC%AC-2-%E6%AD%A5---%E6%B7%BB%E5%8A%A0%E6%89%80%E9%9C%80%E7%9A%84%E5%BA%93" style="margin-top: 16px; margin-bottom: 8px; font-size: 16px; list-style: inherit; font-weight: bold; line-height: 26px; font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">第 2 步 - 添加所需的库</h2><p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">第二步，让我们在项目中添加 Spring Framework 和通用日志 API 库。为此，请右键单击您的项目名称HelloSpring ，然后按照上下文菜单中提供的以下选项进行操作 - Build Path → Configure Build Path以显示 Java Build Path 窗口，如下所示 -<p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;"><figure style="list-style: inherit; margin-top: 16px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;"><div style="list-style: inherit;"><img src="https://ask8088-private-1251520898.cn-south.myqcloud.com/developer-images/article/6461686/inhdkwbyk3.jpg?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1629177150;1629184350&q-key-time=1629177150;1629184350&q-header-list=&q-url-param-list=&q-signature=dfe48c31e5bd7fb3c1ed0af8117a84434569e1fa" style="border-width: 0px; border-style: initial; list-style: inherit; display: block; margin-right: auto; margin-left: auto; max-width: 100%; max-height: 100%; box-shadow: rgba(3, 27, 78, 0.12) 0px 4px 8px; border-radius: 3px; cursor: zoom-in;"></div></figure><p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">现在使用“库”选项卡下可用的“添加外部 JAR”按钮从 Spring Framework 和 Common Logging 安装目录中添加以下核心 JAR -<ul style="margin-top: 0px; margin-bottom: 16px; margin-left: 0px; list-style: none; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;"><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">commons-logging-1.1.1</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-aop-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-aspects-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-beans-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-context-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-context-support-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-core-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-expression-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-instrument-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-instrument-tomcat-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-jdbc-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-jms-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-messaging-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-orm-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-oxm-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-test-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-tx-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-web-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-webmvc-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-webmvc-portlet-4.1.6.RELEASE</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">spring-websocket-4.1.6.RELEASE</li></ul><h2 id="%E7%AC%AC-3-%E6%AD%A5---%E5%88%9B%E5%BB%BA%E6%BA%90%E6%96%87%E4%BB%B6" name="%E7%AC%AC-3-%E6%AD%A5---%E5%88%9B%E5%BB%BA%E6%BA%90%E6%96%87%E4%BB%B6" style="margin-top: 16px; margin-bottom: 8px; font-size: 16px; list-style: inherit; font-weight: bold; line-height: 26px; font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">第 3 步 - 创建源文件</h2><p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">现在让我们在HelloSpring项目下创建实际的源文件。首先，我们需要创建一个名为com.tutorialspoint的包。为此，请右键单击包资源管理器部分中的src并按照选项 -新建 → 包。<p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">接下来我们将在 com.tutorialspoint 包下创建HelloWorld.java和MainApp.java文件。<p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;"><figure style="list-style: inherit; margin-top: 16px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;"><div style="list-style: inherit;"><img src="https://ask8088-private-1251520898.cn-south.myqcloud.com/developer-images/article/6461686/g3t4yfkprp.jpg?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1629177150;1629184350&q-key-time=1629177150;1629184350&q-header-list=&q-url-param-list=&q-signature=9d3ee55a894c0184ddf9c2eb859c57dfc032f0aa" style="border-width: 0px; border-style: initial; list-style: inherit; display: block; margin-right: auto; margin-left: auto; max-width: 100%; max-height: 100%; box-shadow: rgba(3, 27, 78, 0.12) 0px 4px 8px; border-radius: 3px; cursor: zoom-in;"></div></figure><p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">这是HelloWorld.java文件的内容-<pre style="list-style: inherit; margin-top: 0.5em; margin-bottom: 0.5em; padding: 1em; color: rgb(204, 204, 204); background: rgb(80, 85, 107); border-radius: 3px; font-family: Consolas, Monaco, "Andale Mono", "Ubuntu Mono", monospace; overflow-wrap: normal; white-space: pre; word-break: normal; tab-size: 4; hyphens: none; font-size: 14px;">package com.tutorialspoint; public class HelloWorld { private String message; public void setMessage(String message){ this.message = message; } public void getMessage(){ System.out.println("Your Message : " + message); } }</pre><p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">以下是第二个文件MainApp.java的内容-<pre style="list-style: inherit; margin-top: 0.5em; margin-bottom: 0.5em; padding: 1em; color: rgb(204, 204, 204); background: rgb(80, 85, 107); border-radius: 3px; font-family: Consolas, Monaco, "Andale Mono", "Ubuntu Mono", monospace; overflow-wrap: normal; white-space: pre; word-break: normal; tab-size: 4; hyphens: none; font-size: 14px;">package com.tutorialspoint; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class MainApp { public static void main(String[] args) { ApplicationContext context = new ClassPathXmlApplicationContext("Beans.xml"); HelloWorld obj = (HelloWorld) context.getBean("helloWorld"); obj.getMessage(); } }</pre><p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">关于主程序，需要注意以下两个要点 -<ul style="margin-top: 0px; margin-bottom: 16px; margin-left: 0px; list-style: none; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;"><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">第一步是创建一个应用程序上下文，我们在其中使用了框架 API ClassPathXmlApplicationContext()。该 API 加载 bean 配置文件，并最终基于提供的 API，负责创建和初始化所有对象，即配置文件中提到的 bean。</li><li style="margin-bottom: 4px; padding-left: 18px; list-style-type: none; position: relative;">第二步用于使用创建的上下文的getBean()方法获取所需的 bean 。该方法使用 bean ID 返回一个通用对象，最终可以将其强制转换为实际对象。一旦你有了一个对象，你就可以使用这个对象来调用任何类方法。</li></ul><h2 id="%E7%AC%AC-4-%E6%AD%A5---%E5%88%9B%E5%BB%BA-Bean-%E9%85%8D%E7%BD%AE%E6%96%87%E4%BB%B6" name="%E7%AC%AC-4-%E6%AD%A5---%E5%88%9B%E5%BB%BA-Bean-%E9%85%8D%E7%BD%AE%E6%96%87%E4%BB%B6" style="margin-top: 16px; margin-bottom: 8px; font-size: 16px; list-style: inherit; font-weight: bold; line-height: 26px; font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">第 4 步 - 创建 Bean 配置文件</h2><p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">您需要创建一个 Bean 配置文件，该文件是一个 XML 文件并充当将 Bean（即类）粘合在一起的粘合剂。该文件需要在src目录下创建，如下面的屏幕截图所示 -<p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;"><figure style="list-style: inherit; margin-top: 16px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;"><div style="list-style: inherit;"><img src="https://ask8088-private-1251520898.cn-south.myqcloud.com/developer-images/article/6461686/s07vw32815.jpg?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1629177150;1629184350&q-key-time=1629177150;1629184350&q-header-list=&q-url-param-list=&q-signature=77252277c679c6a6848990aeaa21e8578859bf79" style="border-width: 0px; border-style: initial; list-style: inherit; display: block; margin-right: auto; margin-left: auto; max-width: 100%; max-height: 100%; box-shadow: rgba(3, 27, 78, 0.12) 0px 4px 8px; border-radius: 3px; cursor: zoom-in;"></div></figure><p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">通常开发人员将此文件命名为Beans.xml，但您可以独立选择您喜欢的任何名称。您必须确保此文件在 CLASSPATH 中可用，并在主应用程序中使用相同的名称，同时创建 MainApp.java 文件中所示的应用程序上下文。<p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">Beans.xml 用于为不同的 bean 分配唯一的 ID，并控制具有不同值的对象的创建，而不会影响任何 Spring 源文件。例如，使用以下文件，您可以为“message”变量传递任何值，并且可以打印不同的消息值，而不会影响 HelloWorld.java 和 MainApp.java 文件。让我们看看它是如何工作的 -<pre style="list-style: inherit; margin-top: 0.5em; margin-bottom: 0.5em; padding: 1em; color: rgb(204, 204, 204); background: rgb(80, 85, 107); border-radius: 3px; font-family: Consolas, Monaco, "Andale Mono", "Ubuntu Mono", monospace; overflow-wrap: normal; white-space: pre; word-break: normal; tab-size: 4; hyphens: none; font-size: 14px;"><?xml version = "1.0" encoding = "UTF-8"?> <beans xmlns = "http://www.springframework.org/schema/beans" xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation = "http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <bean id = "helloWorld" class = "com.tutorialspoint.HelloWorld"> <property name = "message" value = "Hello World!"/> </bean> </beans></pre><p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">当 Spring 应用程序被加载到内存中时，Framework 使用上面的配置文件来创建所有定义的 bean，并为它们分配一个在<bean>标签中定义的唯一 ID 。您可以使用<property>标签来传递创建对象时使用的不同变量的值。<h2 id="%E7%AC%AC-5-%E6%AD%A5---%E8%BF%90%E8%A1%8C%E7%A8%8B%E5%BA%8F" name="%E7%AC%AC-5-%E6%AD%A5---%E8%BF%90%E8%A1%8C%E7%A8%8B%E5%BA%8F" style="margin-top: 16px; margin-bottom: 8px; font-size: 16px; list-style: inherit; font-weight: bold; line-height: 26px; font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">第 5 步 - 运行程序</h2><p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">一旦您完成了源文件和 bean 配置文件的创建，您就可以开始这一步了，即编译和运行您的程序。为此，请保持 MainApp.Java 文件选项卡处于活动状态，并使用Eclipse IDE 中提供的运行选项或使用Ctrl + F11来编译和运行MainApp应用程序。如果您的应用程序一切正常，这将在 Eclipse IDE 的控制台中打印以下消息 -<pre style="list-style: inherit; margin-top: 0.5em; margin-bottom: 0.5em; padding: 1em; color: rgb(204, 204, 204); background: rgb(80, 85, 107); border-radius: 3px; font-family: Consolas, Monaco, "Andale Mono", "Ubuntu Mono", monospace; overflow-wrap: normal; white-space: pre; word-break: normal; tab-size: 4; hyphens: none; font-size: 14px;">Your Message : Hello World!</pre><p style="margin-top: 0px; margin-bottom: 8px; list-style: inherit; min-height: 24px; color: rgb(51, 51, 51); font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif; white-space: pre-wrap;">恭喜，您已经成功创建了您的第一个 Spring 应用程序。通过更改“message”属性的值并保持两个源文件不变，您可以看到上述 Spring 应用程序的灵活性。

「Spring认证」Spring Hello World 项目示例

友情链接