ClassNotFoundException-org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader

Question

在运行网络应用程序时以及成功构建后出现以下错误

  

java.lang.ClassNotFoundException：   org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader     在java.net.URLClassLoader.findClass（URLClassLoader.java:382）   〜[na：1.8.0_201]在   java.lang.ClassLoader.loadClass（ClassLoader.java:424）〜[na：1.8.0_201]     在java.lang.ClassLoader.loadClass（ClassLoader.java:357）   〜[na：1.8.0_201]，位于java.lang.Class.forName0（本机方法）   〜[na：1.8.0_201]，位于java.lang.Class.forName（Class.java:264）   〜[na：1.8.0_201]在   org.apache.catalina.loader.WebappLoader.createClassLoader（WebappLoader.java:507）   〜[catalina.jar：8.5.37]在   org.apache.catalina.loader.WebappLoader.startInternal（WebappLoader.java:392）   〜[catalina.jar：8.5.37]在   org.apache.catalina.util.LifecycleBase.start（LifecycleBase.java:150）   [catalina.jar：8.5.37]

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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.2.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>

  <groupId>com.neu.csye6225</groupId>
  <artifactId>webApplication</artifactId>
  <version>0.0.1-SNAPSHOT</version>
 <!--  <packaging>jar</packaging> -->

  <name>webApplication</name>
  <url>http://maven.apache.org</url>

  <properties>
    <java.version>1.8</java.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.9.2</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.9.2</version>
        </dependency>
        <dependency>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-starter-tomcat</artifactId>
                </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-compiler-plugin -->
        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.8.0</version>
        </dependency>

            <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>