Java 如何检查 tomcat 服务器是否正在侦听特定端口？
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时间：2020-08-11 10:11:48 来源:igfitidea点击:
How to check whether the tomcat server is listening on particular port?
提问by Avinash Raj
I'm trying to run a servlet program with tomcat as server. But the tomcat server is not running. I looked at the services.msc but it's not there. Below is the log created while running the servlet program via intelj
我正在尝试使用 tomcat 作为服务器运行 servlet 程序。但是tomcat服务器没有运行。我查看了 services.msc，但它不在那里。下面是通过intelj运行servlet程序时创建的日志
"E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23\bin\catalina.bat" run
[2015-06-12 11:15:57,837] Artifact servlet:war exploded: Server is not connected. Deploy is not available.
Using CATALINA_BASE: "C:\Users\Van\.IntelliJIdea14\system\tomcat\Tomcat_8_0_23_servlet"
Using CATALINA_HOME: "E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23"
Using CATALINA_TMPDIR: "E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23\temp"
Using JRE_HOME: "C:\Program Files\Java\jdk1.8.0_45"
Using CLASSPATH: "E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23\bin\bootstrap.jar;E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23\bin\tomcat-juli.jar"
12-Jun-2015 11:15:59.582 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version: Apache Tomcat/8.0.23
12-Jun-2015 11:15:59.584 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built: May 19 2015 14:58:38 UTC
12-Jun-2015 11:15:59.584 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server number: 8.0.23.0
12-Jun-2015 11:15:59.584 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name: Windows 8
12-Jun-2015 11:15:59.584 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version: 6.2
12-Jun-2015 11:15:59.584 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture: amd64
12-Jun-2015 11:15:59.584 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home: C:\Program Files\Java\jdk1.8.0_45\jre
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version: 1.8.0_45-b15
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor: Oracle Corporation
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE: C:\Users\Van\.IntelliJIdea14\system\tomcat\Tomcat_8_0_23_servlet
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME: E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote=
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.port=1099
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.ssl=false
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.authenticate=false
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.rmi.server.hostname=127.0.0.1
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=C:\Users\Van\.IntelliJIdea14\system\tomcat\Tomcat_8_0_23_servlet\conf\logging.properties
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.endorsed.dirs=E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23\endorsed
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=C:\Users\Vanuston\.IntelliJIdea14\system\tomcat\Tomcat_8_0_23_servlet
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23\temp
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent Loaded APR based Apache Tomcat Native library 1.1.33 using APR version 1.5.1.
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].
12-Jun-2015 11:16:00.718 INFO [main] org.apache.catalina.core.AprLifecycleListener.initializeSSL OpenSSL successfully initialized (OpenSSL 1.0.1m 19 Mar 2015)
12-Jun-2015 11:16:01.278 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-apr-8080"]
12-Jun-2015 11:16:01.292 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-apr-8009"]
12-Jun-2015 11:16:01.293 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 2252 ms
12-Jun-2015 11:16:01.348 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service Catalina
12-Jun-2015 11:16:01.349 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.0.23
12-Jun-2015 11:16:01.355 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-apr-8080"]
12-Jun-2015 11:16:01.362 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-apr-8009"]
12-Jun-2015 11:16:01.363 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 69 ms
Connected to server
[2015-06-12 11:16:01,503] Artifact servlet:war exploded: Artifact is being deployed, please wait...
[2015-06-12 11:16:02,178] Artifact servlet:war exploded: Artifact is deployed successfully
[2015-06-12 11:16:02,178] Artifact servlet:war exploded: Deploy took 675 milliseconds
It actually opened the webpage but fails to print the message hello world. I think tomcat is not running on the specified port 8080.
它实际上打开了网页，但无法打印消息hello world。我认为 tomcat 没有在指定的端口上运行8080。
web.xml
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<servlet>
<servlet-name>servlet</servlet-name>
<servlet-class>Servlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>servlet</servlet-name>
<url-pattern>/myservlet</url-pattern>
</servlet-mapping>
</web-app>
Update:
更新：
localhost:8080/myservletdisplays the hello worldpage but we need to enter the address manually. But upon running servlet project directly from intelj, it opens localhost:8080page which gives an empty page.
localhost:8080/myservlet显示hello world页面，但我们需要手动输入地址。但是在直接从 intelj 运行 servlet 项目时，它会打开一个localhost:8080页面，该页面给出了一个空页面。
code:
代码：
@WebServlet(name = "Servlet")
public class Servlet extends HttpServlet {
private String message;
private String mes;
public void init() throws ServletException
{
// Do required initialization
message = "Hello World.";
mes = "Welcome to our new Page..";
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// Set response content type
response.setContentType("text/html");
// Actual logic goes here.
PrintWriter out = response.getWriter();
out.println("<h1>" + message + "</h1></br>" + "<h2>" + mes + "</h2>");
}
public void destroy()
{
// do nothing.
}
}
回答by vinayc
回答by Thisara Alawala
- Seems the application has deployed successfully. Try to access the application using the machine name and the port.
- 似乎应用程序已成功部署。尝试使用机器名称和端口访问应用程序。
E.g.:- < pc-name >:8080
例如：- < pc-name >:8080
Else check in the tomcat server configuration connector details in;
/conf/server.xml
否则检查 tomcat 服务器配置连接器的详细信息；
/conf/server.xml
In the server xml look for the connector details as below;
在服务器 xml 中查找连接器详细信息，如下所示；
<Connector port="8080" address="localhost"
maxHttpHeaderSize="8192" maxPostSize="262144"
maxThreads="250" minSpareThreads="25"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="60000" disableUploadTimeout="true" />
There should be a connector which allows your browser listen to port 8080 and address to access the server.
应该有一个连接器，允许您的浏览器侦听端口 8080 和地址以访问服务器。
Please try with above details.
请尝试上述详细信息。
