1, error conditions are described: Today maven packaged with time, has been an error, suggesting no web.xml, the error message is:
Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.2:war (default-war) on project child2: Error assembling WAR: webxml attribute is required (or pre-existing WEB-INF/web.xml if executing in update mode) -> [Help 1]
Error as shown below:
2, solution: add the following configuration in the pom.xml file:
<properties>
<failOnMissingWebXml>false</failOnMissingWebXml>
</properties>
Packaging Success again, as shown below: