在Kotlin中编写JSP，并具有错误实例化servlet类，ClassNotFoundException

Question

，所以我已经尝试了一段时间了，我想与Kotlin和Maven一起使用它，我遇到了一些问题，

它抛出了ClassNotFoundException，这是我的文件：

• web.xml

  <web-app>
    <display-name>Archetype Created Web Application</display-name>
      <servlet>
          <servlet-name>Servlet</servlet-name>
          <servlet-class>com.erezbiox1.Servlet</servlet-class>
      </servlet>
      <servlet-mapping>
          <servlet-name>Servlet</servlet-name>
          <url-pattern>/test</url-pattern>
      </servlet-mapping>
  </web-app>
  

• pom.xml

  <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>com.erezbiox1</groupId>
    <artifactId>KotlinJsp</artifactId>
    <packaging>war</packaging>
    <version>1.0</version>
    <name>KotlinJsp</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>org.jetbrains.kotlin</groupId>
        <artifactId>kotlin-stdlib</artifactId>
        <version>1.2.0</version>
      </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>
    </dependencies>
    <build>
      <finalName>KotlinJsp</finalName>
      <plugins>
        <plugin>
          <groupId>org.jetbrains.kotlin</groupId>
          <artifactId>kotlin-maven-plugin</artifactId>
          <version>1.2.0</version>
          <executions>
            <execution>
              <id>compile</id>
              <phase>compile</phase>
              <goals>
                <goal>compile</goal>
              </goals>
            </execution>
          </executions>
        </plugin>
      </plugins>
    </build>
  </project>
  

• servlet.kt

  // Tried with, and without this:
  @file:JvmName("Servlet")
  package com.erezbiox1
  import javax.servlet.http.HttpServlet
  import javax.servlet.http.HttpServletRequest
  import javax.servlet.http.HttpServletResponse
  class Servlet : HttpServlet(){
  override fun doGet(req: HttpServletRequest, resp: HttpServletResponse) {
      resp.writer.println("<h1>IT WORKS!</h1>")
      resp.writer.flush()
  }
  }
  

这是项目结构：项目结构

这是错误：

// Exception:
javax.servlet.ServletException: Error instantiating servlet class com.erezbiox1.Servlet
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Thread.java:745)
// Root Cause:
java.lang.ClassNotFoundException: com.erezbiox1.Servlet
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Thread.java:745)

甚至有可能吗？JSP，Kotlin和Maven既是？谢谢！

Answer 1

项目中的类位于resources文件夹中。

这不是它们应该的位置 - 此文件夹仅用于资源。

创建一个新文件夹，将其标记为源根，然后使用该文件夹。