无法使JAR / WAR可执行文件与嵌入式Tomcat 7一起使用

Question

I have a maven project using the tomcat7-maven-plugin . I am trying to package the project into a jar (or war) so it can be run without using maven ( mvn tomcat7:run ). My attempts so far have not resulted in displaying the webpage correctly.

I have followed the steps in https://www.baeldung.com/executable-jar-with-maven (2.6: Web Application with Executable Tomcat). Additionally, the video tutorial on https://searchapparchitecture.techtarget.com/video/Create-a-Java-executable-JAR-with-the-Tomcat-plug-in-for-Maven was followed. Several variants of these have been tried, altering the pom.xml parameters. A sample of the pom.xml is here .

Each time, the archive is built using the command mvn clean install tomcat7:exec-war-only and subsequently a .jar or .war archive is created in the target directory.

After creation, the achieve is run by java -jar Application.jar . The following output is observed:

INFO: Initializing ProtocolHandler ["http-bio-8080"]
Aug 29, 2019 9:58:58 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Tomcat
Aug 29, 2019 9:58:58 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.47
Aug 29, 2019 9:58:58 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8080"]

When navigating to any address, such as http://localhost:8080/Application/home I receive a 404 error page (not served by Tomcat, but Chrome's error page). When running the same application through mvn tomcat7:run the page would load as expected.

Can anyone advise on this please?

Answer 1

Depending on the packaging ( .jar or .war ), your web page resources (html/css/js files) have to be on different location. And I guess your URI call an index.html page?

• For .jar packaging put it in src/main/resources folder
• For .war packaging put it in src/main/webapp folder

In your case, your URL is not reachable and I suspect your web resources are not in the good folder.

This link can help you understand more clearly