如何在端口80上运行Spring Boot应用程序 [英] How can I run a Spring Boot application on port 80

问题描述

我无法在端口80上启动应用程序.

I can't start an application on port 80.

我已经在本地计算机(使用我的IDE和本地服务器)上尝试过，没有运气.

I have tried on my local computer (using my IDE, and on a local server), no luck.

我检查了其他类似的帖子，并确保我在具有root用户的服务器上运行jar.

I have checked other similar posts and make sure that I run jar on server with root.

这是错误:

 till here all ok
...
java.net.SocketException: Permission denied
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:338)
at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:760)
at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:472)
at org.apache.catalina.connector.Connector.startInternal(Connector.java:986)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.StandardService.addConnector(StandardService.java:237)
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.addPreviouslyRemovedConnectors(TomcatEmbeddedServletContainer.java:186)
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.start(TomcatEmbeddedServletContainer.java:149)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.startEmbeddedServletContainer(EmbeddedWebApplicationContext.java:288)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.finishRefresh(EmbeddedWebApplicationContext.java:141)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:483)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
at com.andirod.StartApplication.main(StartApplication.java:20)
...
...
...
Exception in thread "main" java.lang.IllegalStateException: Tomcat connector in failed state
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.start(TomcatEmbeddedServletContainer.java:157)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.startEmbeddedServletContainer(EmbeddedWebApplicationContext.java:288)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.finishRefresh(EmbeddedWebApplicationContext.java:141)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:483)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
at com.andirod.StartApplication.main(StartApplication.java:20)

推荐答案

在Linux上，只有root用户才能打开1024以下的端口，因此默认情况下限制端口80

On linux ports below 1024 can be opened only by root, so the port 80 is restricted by default

如果要在80端口上发布应用，则需要将请求从80端口重定向到要运行springapp(例如8080)端口的端口

if you want to publish your app on 80 port you need to redirect request from port 80 to the port you gonna run your springapp (e.g 8080) port

您可以使用默认情况下允许在端口80上运行的Apache2服务器，并且可以将对您的请求转发到Tomcat

You can use Apache2 server which is allowed by default to work on port 80 and can forward requests for you to Tomcat

Debian的示例配置

Example configuration for Debian

sudo apt-get install apache2

a2enmod proxy
a2enmod proxy_http   

cd /etc/apache2/sites-enabled
sudo nano 000-default.conf

编辑文件:

<VIRTUALHOST *:80>

    ProxyPreserveHost On

    # ...

    ProxyPass / http://localhost:8080/
</VIRTUALHOST>

保存文件: Ctrl + O ， ENTER ， Ctrl + X

Save file: Ctrl+O, ENTER, Ctrl+X

注意:要了解有关虚拟主机配置的更多信息，您可以通过单击此处.

Note: To learn more about virtual host configurations, you can check out the detailed Apache manual on the subject by clicking here.

重新启动Apache2以应用更改:

Restart Apache2 to apply changes:

sudo service apache2 restart

或

sudo systemctl restart apache2

解决方案2:端口转发

使用iptables进行重定向

Solution 2: Port forwarding

Use iptables for redirects

iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080

如果您需要使用本地主机，请添加此

if you need to use localhost also add this

iptables -t nat -I OUTPUT -p tcp -d 127.0.0.1 --dport 80 -j REDIRECT --to-ports 8080

这篇关于如何在端口80上运行Spring Boot应用程序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！