1)run following command for idea project
mvn -U idea:idea
2) /bin/idea64.vmoptions
-Xms128m
-Xmx8192m
-XX:MaxPermSize=1024m
3) addin this line in the maven config
<?xml version="1.0" encoding="UTF-8"?>
4) copy commons-lang-2.6.jar
/Applications/IntelliJ IDEA 13.app/plugins/maven/lib/maven3
for
java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils
5) copy from another intellij create project
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
6) app to javaee7 samples
mvn -U idea:idea
2) /bin/idea64.vmoptions
-Xms128m
-Xmx8192m
-XX:MaxPermSize=1024m
3) addin this line in the maven config
<?xml version="1.0" encoding="UTF-8"?>
4) copy commons-lang-2.6.jar
/Applications/IntelliJ IDEA 13.app/plugins/maven/lib/maven3
for
java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils
5) copy from another intellij create project
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
6) app to javaee7 samples

本文介绍如何解决IntelliJ IDEA中Maven项目遇到的NoClassDefFoundError错误,包括调整VM选项、修改Maven配置文件、复制依赖库到指定路径等步骤。
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