Spring Boot在端口80上运行app [英] Spring Boot running app on port 80

问题描述

我无法在端口80上启动应用程序。
我在IDE和服务器上试过本地计算机，没有运气。我检查了其他类似的帖子，并确保我在root服务器上运行jar。

I cant start application on port 80. i have tried on local computer on IDE and on server, no luck. I have check the 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

在下面的linux端口上1024只能由root打开，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端口上发布应用程序，则需要将请求从端口80重定向到您将运行springapp的端口（例如8080）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Apache2服务器，默认情况下允许在端口80上工作，并可以将请求转发给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的配置示例

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，您可以点击这里。

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

如果你需要使用localhost也添加这个

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Spring Boot在端口80上运行app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！