Spring Boot应用无法在外部Tomcat中启动（在Tomcat 8.5和10中均尝试过）。

huangapple
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英文:

Spring Boot application is not starting in external Tomcat (tried both in Tomcat 8.5 and 10)

问题

  1. 我正在尝试将一个REST示例部署到外部的Tomcat中。然而，它没有显示任何错误，并且Spring也没有启动。根据Spring文档，我遵循了三个步骤：
  3. 1. 在pom.xml中将包打包为war。
  4. 2. 在pom.xml中为spring-boot-starter-tomcat添加`<scope>provided</scope>`。
  5. 3. 将主类扩展为SpringBootServletInitializer。
  7. 当我将这些内容放在Tomcat的webapp文件夹中，然后运行"catalina.bat run"时，它会显示应用程序已成功部署，但无论我尝试访问哪个URL，都不会执行REST方法。
  9. ```java
  10. @SpringBootApplication
  11. @RestController
  12. public class HelloWorldApplication extends SpringBootServletInitializer
  13. {
  14. 	@Override
  15. 	protected SpringApplicationBuilder configure(SpringApplicationBuilder application)
  16. 	{
  17. 		return application.sources(HelloWorldApplication.class);
  18. 	}
  19. 	public static void main(String[] args)
  20. 	{
  21. 		SpringApplication.run(HelloWorldApplication.class, args);
  22. 	}
  23. 	@RequestMapping(value = "/hello")
  24. 	public String helloWorld()
  25. 	{
  26. 		return "Hello World, Peter";
  27. 	}
  28. }

在pom.xml中：

  1. <dependency>
  2.     <groupId>org.springframework.boot</groupId>
  3.     <artifactId>spring-boot-starter-tomcat</artifactId>
  4.     <scope>provided</scope>
  5. </dependency>
  7. <groupId>com.example</groupId>
  8. <artifactId>HelloWorld</artifactId>
  9. <version>0.0.1-SNAPSHOT</version>
  10. <name>HelloWorld</name>
  11. <description>Demo project for Spring Boot</description>
  12. <packaging>war</packaging>

以及application.properties文件中的内容为：

  1. server.servlet.context-path=/sample

Tomcat日志：

  1. 15-Mar-2020 23:06:46.219 INFO [main] org.apache.catalina.startup.HostConfig.deployWAR Deploying web application archive [C:\softwares\apache-tomcat-10.0.0-M1\webapps\HelloWorld-0.0.1-SNAPSHOT.war]
  2. 15-Mar-2020 23:06:48.102 INFO [main] org.apache.jasper.servlet.TldScanner.scanJars 至少有一个JAR被扫描以查找TLD文件，但是其中不包含TLD文件。启用该记录器的调试日志可以获取扫描过的所有JAR文件的完整列表，但是在扫描它们时没有找到TLD文件。在扫描时跳过不需要的JAR文件可以改善启动时间和JSP编译时间。
  3. 15-Mar-2020 23:06:48.409 WARNING [main] org.apache.catalina.util.SessionIdGeneratorBase.createSecureRandom 为会话ID生成创建SecureRandom实例时使用[SHA1PRNG]花费了[270]毫秒。
  4. 15-Mar-2020 23:06:48.440 INFO [main] org.apache.catalina.startup.HostConfig.deployWAR 已在[2,221]毫秒内部署完Web应用程序归档文件[C:\softwares\apache-tomcat-10.0.0-M1\webapps\HelloWorld-0.0.1-SNAPSHOT.war]。

我尝试了以下几种访问方式，但都没有成功。能否有人指点我正确的方向？

  1. localhost:8080/HelloWorld-0.0.1-SNAPSHOT
  2. localhost:8080/HelloWorld-0.0.1-SNAPSHOT/hello
  3. localhost:8080/HelloWorld-0.0.1-SNAPSHOT/HelloWorldApplication/helloWorld
英文:

I am trying to deploy a rest sample in external tomcat. However, it does not give any error and Spring does not start also. According to Spring documentation I followed three steps

  1. Packages as war inside pom.xml
  2. &lt;scope&gt;provided&lt;/scope&gt; to spring-boot-starter-tomcat in pom.xml
  3. Extending main class with SpringBootServletInitializer

When I place this in Tomcat's webapp folder and run "catalina.bat run" it says application deployed successfully, but whatever URL I try to access, it does not execute the rest method

  1. @SpringBootApplication
  2. @RestController
  3. public class HelloWorldApplication extends SpringBootServletInitializer
  4. {
  5. 	@Override
  6. 	protected SpringApplicationBuilder configure(SpringApplicationBuilder application)
  7. 	{
  8. 		return application.sources(HelloWorldApplication.class);
  9. 	}
  10. 	public static void main(String[] args)
  11. 	{
  12. 		SpringApplication.run(HelloWorldApplication.class, args);
  13. 	}
  14. 	@RequestMapping(value = &quot;/hello&quot;)
  15. 	public String helloWorld()
  16. 	{
  17. 		return &quot;Hello World, Peter&quot;;
  18. 	}
  19. }

and in pom.xml

  1. &lt;dependency&gt;
  2.     &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
  3.     &lt;artifactId&gt;spring-boot-starter-tomcat&lt;/artifactId&gt;
  4.     &lt;scope&gt;provided&lt;/scope&gt;
  5. &lt;/dependency&gt;
  7.         
  8. &lt;groupId&gt;com.example&lt;/groupId&gt;
  9. 	&lt;artifactId&gt;HelloWorld&lt;/artifactId&gt;
  10. 	&lt;version&gt;0.0.1-SNAPSHOT&lt;/version&gt;
  11. 	&lt;name&gt;HelloWorld&lt;/name&gt;
  12. 	&lt;description&gt;Demo project for Spring Boot&lt;/description&gt;
  13. 	&lt;packaging&gt;war&lt;/packaging&gt;

and application.properties is like

  1. server.servlet.context-path=/sample

Tomcat logs:

  1.     15-Mar-2020 23:06:46.219 INFO [main] org.apache.catalina.startup.HostConfig.deployWAR Deploying web application archive [C:\softwares\apache-tomcat-10.0.0-M1\webapps\HelloWorld-0.0.1-SNAPSHOT.war]
  2.     15-Mar-2020 23:06:48.102 INFO [main] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
  3.     15-Mar-2020 23:06:48.409 WARNING [main] org.apache.catalina.util.SessionIdGeneratorBase.createSecureRandom Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [270] milliseconds.
  4.     15-Mar-2020 23:06:48.440 INFO [main] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive [C:\softwares\apache-tomcat-10.0.0-M1\webapps\HelloWorld-0.0.1-SNAPSHOT.war] has finished in [2,221] ms

I tried accessing in below ways.but none of them worked.Could any one points me in right direction?

  1. localhost:8080/HelloWorld-0.0.1-SNAPSHOT
  2. localhost:8080/HelloWorld-0.0.1-SNAPSHOT/hello
  3. localhost:8080/HelloWorld-0.0.1-SNAPSHOT/HelloWorldApplication/helloWorld

答案1

得分: 2

确保您在您的pom.xml中设置的Java版本<java.version>1.8</java.version>与Tomcat正在运行的Java版本（即JAVA_HOME环境变量指向的Java版本）相同。

英文:

Make sure that the java version you set in your pom.xml &lt;java.version&gt;1.8&lt;/java.version&gt; and the java version using which the tomcat is running (version of java to which JAVA_HOME env variable is pointing) are same.

答案2

得分: 2

follow this steps it may helps you

  1. Build the war file : go to spring project directory there you do mvn clean install (make sure you have installed maven and set to environmental variable).
  2. Copy war :copy your war file into /webapps folder inside your tomcat folder.
  3. Start server: to start the server go to /bin folder then execute this commands startup.sh for Linux startup.bat for windows.
  4. Hit Url: Once the server started, open your browser the type localhost:{"portNumber"}/{warFileName}/{yourPath} in your case its look like this http://localhost:8080/{warfilename}/hello
英文:

follow this steps it may helps you

  1. Build the war file : go to spring project directory there you do mvn clean install (make sure you have installed maven and set to environmental variable).
  2. Copy war :copy your war file into /webapps folder inside your tomcat folder.
  3. Start server: to start the server go to /bin folder then execute this commands startup.sh for Linux startup.bat for windows.
  4. Hit Url: Once the server started, open your browser the type localhost:{"portNumber"}/{warFileName}/{yourPath} in your case its look like this http://localhost:8080/{warfilename}/hello

答案3

得分: 1

你的路径已在这些函数中设置：

  1. @RequestMapping(value = "/hello")
  2. public String helloWorld()
  3. {
  4.     return "Hello World, Peter";
  5. }

这意味着你只能访问 "/hello"。
访问 localhost:8080/HelloWorld-0.0.1-SNAPSHOT 不会起作用，你必须访问 localhost:8080/${context-path}/${your-path}，在这种情况下是 localhost:8080/sample/hello。

英文:

Your path is set up in this functions

  1. @RequestMapping(value = &quot;/hello&quot;)
  2. public String helloWorld()
  3. {
  4.     return &quot;Hello World, Peter&quot;;
  5. }

Which means the only thing you can access is &quot;/hello&quot;.
Accessing to localhost:8080/HelloWorld-0.0.1-SNAPSHOT will not working, you have to access for localhost:8080/${context-path}/${your-path} in this case localhost:8080/sample/hello

答案4

得分: 0

尝试以下方法：

localhost:8080/app-name/hello

在您的 pom.xml 文件中：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <modelVersion>4.0.0</modelVersion>
  7.     <groupId>it.group.id</groupId>
  8.     <artifactId>artifactId</artifactId>
  9.     <version>1.0-SNAPSHOT</version>
  10.     <packaging>war</packaging>
  11.     <parent>
  12.         <groupId>org.springframework.boot</groupId>
  13.         <artifactId>spring-boot-starter-parent</artifactId>
  14.         <version>2.1.5.RELEASE</version>
  15.         <relativePath/> <!-- lookup parent fdaotory -->
  16.     </parent>
  17.     <properties>
  18.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  19.         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  20.         <java.version>1.8</java.version>
  21.     </properties>
  22.     <dependencies>
  24.         <!--For Build War File-->
  25.         <dependency>
  26.              <groupId>org.springframework.boot</groupId>
  27.              <artifactId>spring-boot-starter-tomcat</artifactId>
  28.              <scope>provided</scope>
  29.         </dependency>
  31.     </dependencies>
  32.     <build>
  33.         <!--DEV-->
  34.         <finalName>app-name</finalName>
  35.         <plugins>
  36.             <plugin>
  37.                 <groupId>org.springframework.boot</groupId>
  38.                 <artifactId>spring-boot-maven-plugin</artifactId>
  39.             </plugin>
  41.             <!--For Build War File-->
  42.             <plugin>
  43.                 <artifactId>maven-war-plugin</artifactId>
  44.                 <version>3.2.2</version>
  45.                 <configuration>
  46.                     <failOnMissingWebXml>false</failOnMissingWebXml>
  47.                 </configuration>
  48.             </plugin>
  50.         </plugins>
  52.     </build>
  54. </project>
英文:

try this way

> localhost:8080/app-name/hello

In your pom.xml

  1. &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
  2. &lt;project xmlns=&quot;http://maven.apache.org/POM/4.0.0&quot;
  3.          xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot;
  4.          xsi:schemaLocation=&quot;http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd&quot;&gt;
  5.     &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
  7.     &lt;groupId&gt;it.group.id&lt;/groupId&gt;
  8.     &lt;artifactId&gt;artifactId&lt;/artifactId&gt;
  9.     &lt;version&gt;1.0-SNAPSHOT&lt;/version&gt;
  10.     &lt;packaging&gt;war&lt;/packaging&gt;
  11.     &lt;parent&gt;
  12.         &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
  13.         &lt;artifactId&gt;spring-boot-starter-parent&lt;/artifactId&gt;
  14.         &lt;version&gt;2.1.5.RELEASE&lt;/version&gt;
  15.         &lt;relativePath/&gt; &lt;!-- lookup parent fdaotory --&gt;
  16.     &lt;/parent&gt;
  17.     &lt;properties&gt;
  18.         &lt;project.build.sourceEncoding&gt;UTF-8&lt;/project.build.sourceEncoding&gt;
  19.         &lt;project.reporting.outputEncoding&gt;UTF-8&lt;/project.reporting.outputEncoding&gt;
  20.         &lt;java.version&gt;1.8&lt;/java.version&gt;
  21.     &lt;/properties&gt;
  22.     &lt;dependencies&gt;
  24.         &lt;!--For Build War File--&gt;
  25.         &lt;dependency&gt;
  26.              &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
  27.              &lt;artifactId&gt;spring-boot-starter-tomcat&lt;/artifactId&gt;
  28.              &lt;scope&gt;provided&lt;/scope&gt;
  29.         &lt;/dependency&gt;
  33.     &lt;/dependencies&gt;
  34.     &lt;build&gt;
  35.         &lt;!--DEV--&gt;
  36.         &lt;finalName&gt;app-name&lt;/finalName&gt;
  37.         &lt;plugins&gt;
  38.             &lt;plugin&gt;
  39.                 &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
  40.                 &lt;artifactId&gt;spring-boot-maven-plugin&lt;/artifactId&gt;
  41.             &lt;/plugin&gt;
  43.             &lt;!--For Build War File--&gt;
  44.             &lt;plugin&gt;
  45.                 &lt;artifactId&gt;maven-war-plugin&lt;/artifactId&gt;
  46.                 &lt;version&gt;3.2.2&lt;/version&gt;
  47.                 &lt;configuration&gt;
  48.                     &lt;failOnMissingWebXml&gt;false&lt;/failOnMissingWebXml&gt;
  49.                 &lt;/configuration&gt;
  50.             &lt;/plugin&gt;
  52.         &lt;/plugins&gt;
  54.     &lt;/build&gt;
  56. &lt;/project&gt;

huangapple
  • 本文由 发表于 2020年3月16日 11:29:04
  • 转载请务必保留本文链接：https://go.coder-hub.com/60699994.html
  • java
  • maven
  • spring-boot
  • tomcat
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