[英]How to use Tomcat 8 + Spring Boot + Maven
根据使用 Tomcat 8上的参考 API 和这个部署 Spring Boot 应用程序教程,应该可以将 Tomcat 8 与Spring Boot一起使用,它默认使用 Tomcat 7。
出于某种原因,它对我不起作用。 我究竟做错了什么?
pom.xml
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<tomcat.version>8.0.3</tomcat.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.0.5.RELEASE</version>
</dependency>
</dependencies>
示例控制器.java
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
@EnableAutoConfiguration
public class SampleController {
@RequestMapping("/")
@ResponseBody
String home() {
return "Hello World!";
}
public static void main(String[] args) throws Exception {
SpringApplication.run(SampleController.class, args);
}
}
输出正在启动 Servlet 引擎:Apache Tomcat/7.0.52
:: Spring Boot :: (v1.0.2.RELEASE)
2014-06-09 13:55:27.688 INFO 5744 --- [ main] SampleController : Starting SampleController on CI01081252 with PID 5744 (started by TECBMEPI in D:\projetos\teclogica\testes automatizados\exemplo int db\workspace\spring-boot-tomcat8-maven)
2014-06-09 13:55:27.730 INFO 5744 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@33b45e9a: startup date [Mon Jun 09 13:55:27 BRT 2014]; root of context hierarchy
2014-06-09 13:55:28.869 INFO 5744 --- [ main] .t.TomcatEmbeddedServletContainerFactory : Server initialized with port: 8081
2014-06-09 13:55:29.117 INFO 5744 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2014-06-09 13:55:29.118 INFO 5744 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/7.0.52
2014-06-09 13:55:29.226 INFO 5744 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2014-06-09 13:55:29.226 INFO 5744 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1498 ms
2014-06-09 13:55:29.656 INFO 5744 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2014-06-09 13:55:29.658 INFO 5744 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2014-06-09 13:55:29.946 INFO 5744 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2014-06-09 13:55:30.035 INFO 5744 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto java.lang.String SampleController.home()
2014-06-09 13:55:30.059 INFO 5744 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2014-06-09 13:55:30.059 INFO 5744 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2014-06-09 13:55:30.236 INFO 5744 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2014-06-09 13:55:30.257 INFO 5744 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8081/http
2014-06-09 13:55:30.259 INFO 5744 --- [ main] SampleController : Started SampleController in 2.933 seconds (JVM running for 3.318)
我已经尝试过这个较新的 RC 版本的 Spring boot ,但仍然加载了 Tomcat 7 而不是 8。
还添加<java.version>1.7</java.version>
属性不起作用。
也试过“application.properties”。 端口设置为启动时指定,但Tomcat的版本保持默认7。
应用程序属性
server.port=8081
tomcat.version=8.0.3
当使用 Spring Boot 以tomcat.version
作为属性覆盖 tomcat 时,仅当您使用spring-boot-starter-parent
作为项目的父项时才有效。
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.1.0.M2</version>
</parent>
(将版本更改为您喜欢的版本)。
<properties>
<tomcat.version>8.0.8</tomcat.version>
</properties>
如果您不想将其用作父项,则必须在 pom.xml 中使用<dependencyManagement>
部分来覆盖所有 spring 版本并保留上述属性。
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-core</artifactId>
<version>${tomcat.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-el</artifactId>
<version>${tomcat.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-logging-juli</artifactId>
<version>${tomcat.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<version>${tomcat.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-websocket</artifactId>
<version>${tomcat.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jdbc</artifactId>
<version>${tomcat.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jsp-api</artifactId>
<version>${tomcat.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
无论哪种方式都可以,但我会说扩展父级是最简单的,但这并不总是可行的。
您是否尝试在 application.properties 中覆盖 tomcat.version ? 具体来说,将其设置为 8.0.3 会使 spring boot 运行 8.0.3 而不是默认值。
这是官方文件。
没有起始父级:
<project>
<properties>
<tomcat.version>8.0.3</tomcat.version>
</properties>
<dependencyManagement>
<dependencies>
<!-- things you wanna override -->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-core</artifactId>
<version>${tomcat.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-el</artifactId>
<version>${tomcat.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-websocket</artifactId>
<version>${tomcat.version}</version>
<scope>test</scope>
</dependency>
<!-- pom -->
<dependency>
<!-- Import dependency management from Spring Boot -->
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>1.4.2.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-juli</artifactId>
<version>${tomcat.version}</version>
</dependency>
</dependencies>
</project>
我可以像在另一个线程中回答它一样回答这个问题。 我认为有些人不知道 Spring Boot 的一个关键信息只是对实际 Java Servlet 容器(如 Jetty、Glassfish、Tomcat 等)的模拟。作为开发人员,您必须选择将使用哪个容器。
Spring Boot 很不错,但当然也有缺点,它实际上只是由 spring.io 团队创建的,目的是使他们的教程看起来更好,以试图与其他“在几秒钟内启动并运行”技术竞争。
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