我无法在端口80上启动应用程序。
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。
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。
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)
在Linux上,只有root可以打开低于1024的端口,因此默认情况下限制端口80
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
解决方案1:HTTP代理服务器 你可以使用默认情况下允许在端口80上运行的Apache2服务器,并且可以将对你的请求转发到Tomcat
Debian的示例配置
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
Ctrl+ O
ENTER,Ctrl+X
注意:要了解有关虚拟主机配置的更多信息,你可以通过单击此处查看有关该主题的详细Apache手册。
重新启动Apache2以应用更改:
sudo service apache2 restart
要么
sudo systemctl restart apache2
解决方案2:端口转发 使用iptables进行重定向
iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080
如果你需要使用localhost也可以添加
iptables -t nat -I OUTPUT -p tcp -d 127.0.0.1 --dport 80 -j REDIRECT --to-ports 8080