Java - Spring Boot - 无法在端口 8080 上启动 Web 服务器
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时间：2020-11-03 10:16:13 来源:igfitidea点击:
Java - Spring Boot - fails to start Web server on port 8080
提问by Joe
I am going trough Spring boot configuration and testing setup and basic application.
我将通过 Spring Boot 配置和测试设置以及基本应用程序。
Trying to run a Web Spring boot application from InteliJ:
尝试从 InteliJ 运行 Web Spring 启动应用程序：
package com.springbootdemoweb1.demoweb1;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class DemoWeb1Application {
public static void main(String[] args) {
SpringApplication.run(DemoWeb1Application.class, args);
}
}
It is a very basic application but it show errors:
这是一个非常基本的应用程序，但它显示错误：
/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/bin/java -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=53736 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=127.0.0.1 -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true "-javaagent:/Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar=53737:/Applications/IntelliJ IDEA.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath /Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/deploy.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/ext/jaccess.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/ext/jfxrt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/javaws.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/jfxswt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/plugin.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/lib/ant-javafx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/lib/javafx-mx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/lib/packager.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/lib/tools.jar:/Users/dnk306/IdeaProjects/demo-web1/target/classes:/Users/dnk306/.m2/repository/org/springframework/boot/spring-boot-starter-web/2.0.0.RELEASE/spring-boot-starter-web-2.0.0.RELEASE.jar:/Users/dnk306/.m2/repository/org/springframework/boot/spring-boot-starter/2.0.0.RELEASE/spring-boot-starter-2.0.0.RELEASE.jar:/Users/dnk306/.m2/repository/org/springframework/boot/spring-boot/2.0.0.RELEASE/spring-boot-2.0.0.RELEASE.jar:/Users/dnk306/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/2.0.0.RELEASE/spring-boot-autoconfigure-2.0.0.RELEASE.jar:/Users/dnk306/.m2/repository/org/springframework/boot/spring-boot-starter-logging/2.0.0.RELEASE/spring-boot-starter-logging-2.0.0.RELEASE.jar:/Users/dnk306/.m2/repository/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar:/Users/dnk306/.m2/repository/ch/qos/logback/logback-core/1.2.3/logback-core-1.2.3.jar:/Users/dnk306/.m2/repository/org/apache/logging/log4j/log4j-to-slf4j/2.10.0/log4j-to-slf4j-2.10.0.jar:/Users/dnk306/.m2/repository/org/apache/logging/log4j/log4j-api/2.10.0/log4j-api-2.10.0.jar:/Users/dnk306/.m2/repository/org/slf4j/jul-to-slf4j/1.7.25/jul-to-slf4j-1.7.25.jar:/Users/dnk306/.m2/repository/javax/annotation/javax.annotation-api/1.3.2/javax.annotation-api-1.3.2.jar:/Users/dnk306/.m2/repository/org/yaml/snakeyaml/1.19/snakeyaml-1.19.jar:/Users/dnk306/.m2/repository/org/springframework/boot/spring-boot-starter-json/2.0.0.RELEASE/spring-boot-starter-json-2.0.0.RELEASE.jar:/Users/dnk306/.m2/repository/com/fasterxml/Hymanson/core/Hymanson-databind/2.9.4/Hymanson-databind-2.9.4.jar:/Users/dnk306/.m2/repository/com/fasterxml/Hymanson/core/Hymanson-annotations/2.9.0/Hymanson-annotations-2.9.0.jar:/Users/dnk306/.m2/repository/com/fasterxml/Hymanson/core/Hymanson-core/2.9.4/Hymanson-core-2.9.4.jar:/Users/dnk306/.m2/repository/com/fasterxml/Hymanson/datatype/Hymanson-datatype-jdk8/2.9.4/Hymanson-datatype-jdk8-2.9.4.jar:/Users/dnk306/.m2/repository/com/fasterxml/Hymanson/datatype/Hymanson-datatype-jsr310/2.9.4/Hymanson-datatype-jsr310-2.9.4.jar:/Users/dnk306/.m2/repository/com/fasterxml/Hymanson/module/Hymanson-module-parameter-names/2.9.4/Hymanson-module-parameter-names-2.9.4.jar:/Users/dnk306/.m2/repository/org/springframework/boot/spring-boot-starter-tomcat/2.0.0.RELEASE/spring-boot-starter-tomcat-2.0.0.RELEASE.jar:/Users/dnk306/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/8.5.28/tomcat-embed-core-8.5.28.jar:/Users/dnk306/.m2/repository/org/apache/tomcat/embed/tomcat-embed-el/8.5.28/tomcat-embed-el-8.5.28.jar:/Users/dnk306/.m2/repository/org/apache/tomcat/embed/tomcat-embed-websocket/8.5.28/tomcat-embed-websocket-8.5.28.jar:/Users/dnk306/.m2/repository/org/hibernate/validator/hibernate-validator/6.0.7.Final/hibernate-validator-6.0.7.Final.jar:/Users/dnk306/.m2/repository/javax/validation/validation-api/2.0.1.Final/validation-api-2.0.1.Final.jar:/Users/dnk306/.m2/repository/org/jboss/logging/jboss-logging/3.3.2.Final/jboss-logging-3.3.2.Final.jar:/Users/dnk306/.m2/repository/com/fasterxml/classmate/1.3.4/classmate-1.3.4.jar:/Users/dnk306/.m2/repository/org/springframework/spring-web/5.0.4.RELEASE/spring-web-5.0.4.RELEASE.jar:/Users/dnk306/.m2/repository/org/springframework/spring-beans/5.0.4.RELEASE/spring-beans-5.0.4.RELEASE.jar:/Users/dnk306/.m2/repository/org/springframework/spring-webmvc/5.0.4.RELEASE/spring-webmvc-5.0.4.RELEASE.jar:/Users/dnk306/.m2/repository/org/springframework/spring-aop/5.0.4.RELEASE/spring-aop-5.0.4.RELEASE.jar:/Users/dnk306/.m2/repository/org/springframework/spring-context/5.0.4.RELEASE/spring-context-5.0.4.RELEASE.jar:/Users/dnk306/.m2/repository/org/springframework/spring-expression/5.0.4.RELEASE/spring-expression-5.0.4.RELEASE.jar:/Users/dnk306/.m2/repository/org/slf4j/slf4j-api/1.7.25/slf4j-api-1.7.25.jar:/Users/dnk306/.m2/repository/org/springframework/spring-core/5.0.4.RELEASE/spring-core-5.0.4.RELEASE.jar:/Users/dnk306/.m2/repository/org/springframework/spring-jcl/5.0.4.RELEASE/spring-jcl-5.0.4.RELEASE.jar com.springbootdemoweb1.demoweb1.DemoWeb1Application
. ____ _ __ _ _
/\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.0.0.RELEASE)
2018-03-02 14:06:24.863 INFO 7177 --- [ main] c.s.demoweb1.DemoWeb1Application : Starting DemoWeb1Application on 9801a7a5b33d with PID 7177 (/Users/dnk306/IdeaProjects/demo-web1/target/classes started by dnk306 in /Users/dnk306/IdeaProjects/demo-web1)
2018-03-02 14:06:24.865 INFO 7177 --- [ main] c.s.demoweb1.DemoWeb1Application : No active profile set, falling back to default profiles: default
2018-03-02 14:06:24.904 INFO 7177 --- [ main] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@6e75aa0d: startup date [Fri Mar 02 14:06:24 EST 2018]; root of context hierarchy
2018-03-02 14:06:25.641 INFO 7177 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2018-03-02 14:06:25.659 INFO 7177 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2018-03-02 14:06:25.659 INFO 7177 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.28
2018-03-02 14:06:25.662 INFO 7177 --- [ost-startStop-1] 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: [/Users/dnk306/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.]
2018-03-02 14:06:25.730 INFO 7177 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2018-03-02 14:06:25.730 INFO 7177 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 830 ms
2018-03-02 14:06:25.807 INFO 7177 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Servlet dispatcherServlet mapped to [/]
2018-03-02 14:06:25.812 INFO 7177 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-03-02 14:06:25.812 INFO 7177 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-03-02 14:06:25.812 INFO 7177 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-03-02 14:06:25.812 INFO 7177 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2018-03-02 14:06:26.050 INFO 7177 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@6e75aa0d: startup date [Fri Mar 02 14:06:24 EST 2018]; root of context hierarchy
2018-03-02 14:06:26.101 INFO 7177 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-03-02 14:06:26.102 INFO 7177 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-03-02 14:06:26.125 INFO 7177 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-03-02 14:06:26.126 INFO 7177 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-03-02 14:06:26.153 INFO 7177 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-03-02 14:06:26.263 INFO 7177 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2018-03-02 14:06:26.295 ERROR 7177 --- [ main] o.apache.catalina.core.StandardService : Failed to start connector [Connector[HTTP/1.1-8080]]
org.apache.catalina.LifecycleException: Failed to start component [Connector[HTTP/1.1-8080]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.core.StandardService.addConnector(StandardService.java:225) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.addPreviouslyRemovedConnectors(TomcatWebServer.java:255) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:197) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.startWebServer(ServletWebServerApplicationContext.java:300) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:162) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552) [spring-context-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:388) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1246) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1234) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at com.springbootdemoweb1.demoweb1.DemoWeb1Application.main(DemoWeb1Application.java:10) [classes/:na]
Caused by: org.apache.catalina.LifecycleException: Protocol handler start failed
at org.apache.catalina.connector.Connector.startInternal(Connector.java:1021) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
... 13 common frames omitted
Caused by: java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method) ~[na:1.8.0_161]
at sun.nio.ch.Net.bind(Net.java:433) ~[na:1.8.0_161]
at sun.nio.ch.Net.bind(Net.java:425) ~[na:1.8.0_161]
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223) ~[na:1.8.0_161]
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74) ~[na:1.8.0_161]
at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:210) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:1150) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:591) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.connector.Connector.startInternal(Connector.java:1018) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
... 14 common frames omitted
Sounds like port 8080 is busy but do not see anything that is running on that port:
netstat -a | grep 8080
lsof -i :80
听起来像端口 8080 很忙，但看不到该端口上正在运行的任何东西：
netstat -a | grep 8080
lsof -i :80
What should I check?
我应该检查什么？
采纳答案by fennel
This looks very similar to a previous question: Launching Spring application Address already in use.
这看起来与之前的问题非常相似：Launching Spring application Address already in use。
You may already have the server running on that port, and need to stop it before relaunching.
您可能已经在该端口上运行了服务器，并且需要在重新启动之前停止它。
You can also use a different port, such as 8181.
您也可以使用不同的端口，例如 8181。
回答by Sahil Chhabra
Its strange that 8080 looks free, but still you get Already in useerror.
奇怪的是 8080 看起来是免费的，但仍然会Already in use出错。
I suggest you to set server.portin your config to some other port instead of default 8080 (say 8081) like any one of the below given options:
我建议您将server.port配置设置为其他端口，而不是默认的 8080（比如 8081），就像下面给出的任何一个选项：
1)Add following to your application.properties -
1)将以下内容添加到您的 application.properties -
server.port=8081
If you are using application.yml -
如果您使用的是 application.yml -
server:
port: 8081
2)Give a command line option for defining the port -
2）给出定义端口的命令行选项 -
java -jar pathToJar/jar-name-1.0.0.jar --server.port=8081
If using a IDE, in your build config add the following JVM argument -
如果使用 IDE，请在您的构建配置中添加以下 JVM 参数 -
-Dserver.port=8081
