java.lang.NoClassDefFoundError：无法初始化类x

Question

I'm new to tomcat and maven both, I created a project using IntelliJ IDEA. there are some java classes in src directory, and the .class files is stored in target directory after building the project. It seems that tomcat cannot find where are the .class files to initialize classes. here is the directory tree:

here is my pom.xml contetnt:

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>IE</groupId>
  <artifactId>IE</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>IE Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>javax.servlet.jsp-api</artifactId>
      <version>2.3.1</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.0</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>org.json</groupId>
      <artifactId>org.json</artifactId>
      <version>chargebee-1.0</version>
    </dependency>
  </dependencies>
  <build>
    <sourceDirectory>src/main/javaClasses</sourceDirectory>
    <finalName>IE</finalName>
    <plugins>
      <plugin>
        <groupId>org.apache.tomcat.maven</groupId>
        <artifactId>tomcat7-maven-plugin</artifactId>
        <version>2.2</version>
        <configuration>
          <url>http://localhost:8080/manager/text</url>
          <server>TomcatServer</server>
          <path>/projectName</path>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

can anybody help how can I tell the path of target file to find classes please? Now I can't instantiate any of my classes in my jsp files.

Answer 1

You haven't customized the configuration of the compiler plugin, therefore, it's incorrect to put your source files under src/main/javaClasses .

You should move your source packages/classes to src/main/java , and Maven should pick it up. This is where Maven expects them by default.

For more info, check standard directory layout page .