我遇到以下错误：
线程“main”中的异常java.lang.IllegalArgumentException：不能 实例化接口 org.springframework.context.ApplicationContextInitializer： org.springframework.boot.autoconfigure.SharedMetadataReaderFactoryContextInitializer 在 org.springframework.boot.SpringApplication.createSpringFactoriesInstances（SpringApplication.java:414） 在 org.springframework.boot.SpringApplication.getSpringFactoriesInstances（SpringApplication.java:394） 在 org.springframework.boot.SpringApplication.getSpringFactoriesInstances（SpringApplication.java:385） 在 org.springframework.boot.SpringApplication.initialize（SpringApplication.java:261） 在 org.springframework.boot.SpringApplication。（SpringApplication.java:237） 在 org.springframework.boot.SpringApplication.run（SpringApplication.java:1191） 在 org.springframework.boot.SpringApplication.run（SpringApplication.java:1180）
我的主要方法是
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);
}
}
我的pom.xml是
<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>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
<version>1.4.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<finalName>proj1</finalName>
</build>
</project>
答案 0 :(得分：0)
您的<dependencies>应该看起来像这样
<?xml version="1.0" encoding="utf-8"?>
<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.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<!-- Test Dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>proj1</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
而不是Spring Boot（1.3和1.4）版本和Spring版本（4.0,4.2和4.3）的混合。您还包括已包含（或破坏事物）的依赖项。
另一件事是你应该拥有你的pom中缺少的spring-boot-maven插件。
答案 1 :(得分：0)
将spring-boot-starter-parent的版本从 2.0.0 更改为 2.1.3 对我来说很有效。
答案 2 :(得分：0)
我最近遇到了这个问题。我正在通过bat文件运行可执行jar。我的可执行jar已经具有pom.xml中提到的版本所需的所有spring boot jar。但是由于错误，我也在bat文件中定义了spring-boot库（其他版本）的类路径。当我删除该类路径条目时，这个特定的问题消失了，因为它只使用了pom文件中提到的spring boot jar。我认为这个问题是由于spring jar的版本冲突而来的。如果我错了，请纠正我。谢谢。
答案 3 :(得分：-1)
public class MyPolicy extends Policy {
@Override
public PermissionCollection getPermissions(CodeSource codesource) {
Permissions p = new Permissions();
/**
* The AllPermission is a permission that implies all other permissions.
* <p>
* <b>Note:</b> Granting AllPermission should be done with extreme care,
* as it implies all other permissions. Thus, it grants code the ability
* to run with security
* disabled. Extreme caution should be taken before granting such
* a permission to code. This permission should be used only during testing,
* or in extremely rare cases where an application or applet is
* completely trusted and adding the necessary permissions to the policy
* is prohibitively cumbersome.
*
* @see java.security.Permission
* @see java.security.AccessController
* @see java.security.Permissions
* @see java.security.PermissionCollection
* @see java.lang.SecurityManager
*
*
* @author Roland Schemers
* @since 1.2
*
* @serial exclude
public final class AllPermission*/
//p.add(new AllPermission());
//p.add(new CryptoPermission());
p.add(new AudioPermission());
p.add(new AuthPermission());
p.add(new AWTPermission());
p.add(new BasicPermission());
p.add(new DelegationPermission());
p.add(new FilePermission());
p.add(new JAXBPermission());
p.add(new LinkPermission());
p.add(new LoggingPermission());
p.add(new ManagementPermission());
p.add(new MBeanPermission());
p.add(new MBeanServerPermission());
p.add(new MBeanTrustPermission());
p.add(new NetPermission());
p.add(new Permission());
p.add(new PrivateCredentialPermission());
p.add(new PropertyPermission());
p.add(new ReflectPermission());
p.add(new RuntimePermission());
p.add(new SecurityPermission());
p.add(new SerializablePermission());
p.add(new ServicePermission());
p.add(new SocketPermission());
p.add(new SQLPermission());
p.add(new SSLPermission());
p.add(new SubjectDelegationPermission());
p.add(new UnresolvedPermission());
p.add(new URLPermission());
p.add(new WebServicePermission());
return p;
}
}
public void main(String[] args) {
Policy.setPolicy(new MyPolicy());
SpringApplication.run(Application.class, args);
}