带有嵌入式tomcat的Spring Boot在端口上运行,但无法正常运行

时间:2018-12-05 07:05:29

标签: java linux spring spring-boot tomcat

我在Linux中是一个新手,我想在运行带有嵌入式tomcat的Spring Boot应用程序时,我实际上尝试了Internet上的所有内容,但我无法理解我的问题。这就是我的代码(Maven)

  <?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>test.my.app</groupId>
    <artifactId>TestApplication</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>


    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <start-class>com.test.my.Applocation.App</start-class>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-rest</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
        </dependency>

        <dependency>
            <groupId>com.squareup.retrofit2</groupId>
            <artifactId>retrofit</artifactId>
            <version>2.3.0</version>
        </dependency>

        <dependency>
            <groupId>com.squareup.okhttp3</groupId>
            <artifactId>logging-interceptor</artifactId>
            <version>3.12.0</version>
        </dependency>
        <dependency>
            <groupId>com.squareup.retrofit2</groupId>
            <artifactId>converter-gson</artifactId>
            <version>2.3.0</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <executable>true</executable>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>

这是我的application.properties文件。

server.port=0

这就是我将项目构建到Jar中的方式:

MVN->清理->编译->包

,我可以在Windows计算机上运行该应用程序,并且可以正常运行!但是我的问题出在Linux服务器上,当我在系统上运行此应用程序时,这是日志,它说它成功了,但是不起作用

INFO 20351 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.hateoas.config.HateoasConfiguration' of type [org.springframework.hateoas.config.HateoasConfiguration$$EnhancerBySpringCGLIB$$b190a49] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
INFO 20351 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 0 (http)
INFO 20351 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
INFO 20351 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/9.0.13
INFO 20351 --- [           main] o.a.catalina.core.AprLifecycleListener   : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib]
INFO 20351 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
INFO 20351 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 2302 ms
INFO 20351 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
INFO 20351 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 41940 (http) with context path ''
INFO 20351 --- [           main] c.t.c.TransApplication.TransApplication  : Started TransApplication in 4.878 seconds (JVM running for 5.402)

这是我的

  

netstat -ltnpa | grep -i --colour LISTEN

41940 端口上的日志

tcp6       0      0 :::41940                :::*                    LISTEN      20351/java 

但是现在我想使用 example.com:41940/myrequest 向该端口发送请求,但该请求无法正常工作并且服务器无法响应

=================== 编辑 我将 server.port = 0修改为8090

这是

的结果
  

curl -XGET localhost:8090

     

curl -XGET localhost:8090%总计%收到的%Xferd平均值   速度时间时间时间当前                                    Dload上传总剩余左速度0 0 0 0 0 0 0 0 0-:-:--:-:-   -:-:-0100 93 0 93 0 0 325 0-:-:--:-:--:-:-326 {“ _links”:{       “个人资料”:{         “ href”:“ http://localhost:8090/profile”       }}

3 个答案:

答案 0 :(得分:0)

尝试使用以下参数启动应用程序:

-Djava.net.preferIPv4Stack=true -Djava.net.preferIPv4Addresses

然后使用netstat确保应用程序正在侦听IPv4。

如果它也不起作用,则发布以下内容:

curl -sSL -D - http://localhost:8090 -o /dev/null

在这里看看:Spring boot application listens over IPv6 without -Djava.net.preferIPv4Stack=true and -Djava.net.preferIPv4Addresses parameters

我认为您的tomcat仅侦听IPv6,而不侦听IPv4。

BR

答案 1 :(得分:0)

我正在将Spring Boot应用程序部署到Pivotal Cloud Foundation容器。 我遇到了同样的错误,但是发现我缺少POM依赖项(而且看来你也是):

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

我在Post中找到了这个: Spring boot: Unable to start embedded Tomcat servlet container

注意,这给我带来了不同的错误,但是我取得了进步。

关于问题的结论……

我添加此评论是因为这可以解决我的问题。

依赖关系在Servlet API 2.5中得到了体现 Tomcat 8.5(嵌入式Spring Boot)需要Servlet API 3.1!

<groupId>org.jvnet.jax-ws-commons.spring</groupId>
    <artifactId>jaxws-spring</artifactId>
    <version>1.9</version>
    <exclusions>
        <exclusion>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
        </exclusion>

依赖性具有Servlet 2.5 API。  Tomcat 8.1需要“ 3.1”

发现要查看Maven依赖树:

man dependency:tree 

来自此帖子:Getting NoSuchMethodError:javax.servlet.ServletContext.getVirtualServerName()

答案 2 :(得分:0)

正如我所说的,我在Linux中是一个新手,问题是我没有将端口引入防火墙,现在可以正常工作