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This article will explain in detail how SpringBoot is external Tomcat. The quality of the article is high, so Xiaobian shares it with you as a reference. I hope you have a certain understanding of relevant knowledge after reading this article.

Configuration package management file

Open the pom.xml file in the root directory of the project, declare the packaging format as war under the project tag, and the code is as follows:

war

Excluding built-in tomcat

When packaging, the built-in tomcat will be packaged by default, which causes conflicts, so here we need to exclude the built-in, and add the following dependencies under the dependencies tab.

org.springframework.boot spring-boot-starter-tomcat provided

There is also a practice here is to exclude tomcat from the spring-boot-starter-web dependency, which will exclude websocket-related packages, and websocket in your project will not be used. You need to manually introduce javax.websocket-api. The last update time of this dependency is 2016, so this method is not recommended.

Websocket related

Since the external tomcat is used, then the things originally configured with the built-in tomcat can be deleted (of course, you can not delete it, but it is best to delete it for code specifications), I delete the following things here:

Dependency in pom.xml

org.springframework.boot spring-boot-starter-websocket

Websocket startup configuration, code as follows

package com.lk.config; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.web.socket.server.standard.ServerEndpointExporter; /** * */ @Configuration public class WebSocketConfig { @Bean public ServerEndpointExporter serverEndpointExporter() { return new ServerEndpointExporter(); } }

Set package name and path

If you do not set the name and path, the default package name will be accompanied by a version number. The package path is in the target directory of the current project. We can customize it by using the build tag in pom.xml. The code is as follows:

Modify Startup Class

Next, we modify the SpringBoot startup class to inherit SpringBootServletInitializer, rewrite the configure method, and tell it that we are using external Tomcat. The code is as follows:

@SpringBootApplication public class ChatSystemServerApplication extends SpringBootServletInitializer { //External tomcat needs to inherit SpringBootServletInitializer, rewrite SpringApplicationBuilder @Override protected SpringApplicationBuilder configuration (SpringApplicationBuilder application) { return application.sources(ChatSystemServerApplication.class); } public static void main(String[] args) { SpringApplication.run(ChatSystemServerApplication.class, args); } }

At this point, our project configuration part is complete, we refresh the pom.xml file, click clean in the maven toolbar of idea, and then click package, you can type a war package under the target directory.

Tomcat configuration

My project enables https. After using external tomcat, https configured in application.yml is invalid. We need to reconfigure it in tomcat.

Open https access

We open server.xml under tomcat's conf directory, find the label in the Service label named Catalina, and modify the port and redirectPort attributes. The code is as follows:

Then, add the following code to the end of the above label to redirect non-port 80 access to port 443

Configure SSL Certificates

Put the certificate file server.jks and keystorePass.txt file of the domain name in the conf directory, and add the following code to the Service tag of the name Catalina in server.xml.

certificateKeystoreFile is your certificate file, certificateKeystorePassword is your certificate file password, this password is in the keystorePass.txt file

Configure Path Access

After putting the war package into tomcat's webapps directory, we wanted to ask if we needed to include the project name. If we didn't want to add the project name to access our project directly, we needed to configure it separately.

In the server.xml file, find the tag and add the Context tag, as follows:

Context path="" docBase="">

path: Leave blank to indicate the root directory of the domain name, docBase is the directory where your war package is located

Set default home page

Because we modified tomcat's default access page, all root directories will not go to the ROOT directory page when accessing, at this time you need to configure a root directory mapping in the project, so that it jumps to the page in the ststic in our specified project, the code is as follows:

//default home map @Controller public class DefaultController { @RequestMapping("/") public String Welcome(){ return "forward:index.html"; } } About SpringBoot in how to external Tomcat to share here, I hope the above content can be of some help to everyone, you can learn more knowledge. If you think the article is good, you can share it so that more people can see it.

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