Exception in thread “main” java.lang.IllegalArgumentException: Cannot instantiate interface org.springframework.context.ApplicationContextInitializer

问题:

I am facing the following error. Exception in thread "main" java.lang.IllegalArgumentException: Cannot instantiate interface org.springframework.context.ApplicationContextInitializer : org.springframework.boot.autoconfigure.SharedMetadataReaderFactoryContextInitializer at org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:414) at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:394) at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:385) at org.springframework.boot.SpringApplication.initialize(SpringApplication.java:261) at org.springframework.boot.SpringApplication.(SpringApplication.java:237) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1191) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1180)

My main method is

package proj1;  import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.builder.SpringApplicationBuilder; import org.springframework.boot.context.web.SpringBootServletInitializer;  @SpringBootApplication public class WebApplication extends SpringBootServletInitializer {     @Override     protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {         return application.sources(WebApplication.class);     }      public static void main(String[] args) throws Exception {         SpringApplication.run(WebApplication.class, args);     } } 

My pom.xml is

<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.webapp</groupId>   <artifactId>proj1</artifactId>   <packaging>war</packaging>   <parent>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-parent</artifactId>         <version>1.3.5.RELEASE</version>     </parent>   <version>0.0.1-SNAPSHOT</version>   <name>proj1 Maven Webapp</name>   <url>http://maven.apache.org</url>   <dependencies>    <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-core</artifactId>             <version>4.0.0.RELEASE</version>         </dependency>     <dependency>       <groupId>junit</groupId>       <artifactId>junit</artifactId>       <version>3.8.1</version>       <s