maven構建報錯：

Caused by: org.apache.maven.plugin.MojoExecutionException: Error assembling WAR: webxml attribute is required (or pre-existing WEB-INF/web.xml if executing in update mode)

at org.apache.maven.plugin.war.WarMojo.execute(WarMojo.java:191)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
... 20 more
Caused by: org.codehaus.plexus.archiver.ArchiverException: webxml attribute is required (or pre-existing WEB-INF/web.xml if executing in update mode)
at org.codehaus.plexus.archiver.war.WarArchiver.initZipOutputStream(WarArchiver.java:162)
at org.codehaus.plexus.archiver.zip.AbstractZipArchiver.createArchiveMain(AbstractZipArchiver.java:309)
at org.codehaus.plexus.archiver.zip.AbstractZipArchiver.execute(AbstractZipArchiver.java:211)
at org.codehaus.plexus.archiver.AbstractArchiver.createArchive(AbstractArchiver.java:944)
at org.apache.maven.archiver.MavenArchiver.createArchive(MavenArchiver.java:598)
at org.apache.maven.plugin.war.WarMojo.performPackaging(WarMojo.java:244)

at org.apache.maven.plugin.war.WarMojo.execute(WarMojo.java:175)

原因:構建項目的WEB-INF目錄下找不到web.xml

1、創建web.xml文件

2、不創建web.xml文件加入以下代碼

<plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-war-plugin</artifactId><version>2.6</version><configuration><failOnMissingWebXml>false</failOnMissingWebXml></configuration></plugin></plugins>

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