在Maven Spring項目中獲取java.lang.IllegalAccessError

Question

我正在做我的第一個Maven Spring Rest項目，其中包括一個嵌入式tomcat服務和一些MongoDb查詢。我對Maven和Spring都很陌生，似乎無法理解這個錯誤。

Exception in thread "main" java.lang.IllegalAccessError: tried to access method org.springframework.core.io.support.SpringFactoriesLoader.loadFactoryNames(Ljava/lang/Class;Ljava/lang/ClassLoader;)Ljava/util/List; from class org.springframework.boot.SpringApplication 
    at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:260) 
    at org.springframework.boot.SpringApplication.initialize(SpringApplication.java:226) 
    at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:200) 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:920) 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:909) 
    at com.cave.spring.firstSpring.Application.main(Application.java:12) 

這是我得到的異常。我試圖啓動一個嵌入式tomcat服務，但我不斷收到錯誤。我覺得有一些incompatabilities在我的pom.xml：

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

    <groupId>org.springframework</groupId> 
    <artifactId>gs-rest-service</artifactId> 
    <version>0.1.0</version> 
    <packaging>jar</packaging> 

    <parent> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-parent</artifactId> 
     <version>1.0.0.RC1</version> 
    </parent> 

    <dependencies> 
    <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-core</artifactId> 
      <version>3.2.5.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-beans</artifactId> 
      <version>3.2.5.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-context</artifactId> 
      <version>3.2.5.RELEASE</version> 
     </dependency> 

     <dependency> 
      <groupId>org.mongodb</groupId> 
      <artifactId>mongo-java-driver</artifactId> 
      <version>2.11.0</version> 
     </dependency> 

     <dependency> 
      <groupId>org.springframework.data</groupId> 
      <artifactId>spring-data-mongodb</artifactId> 
      <version>1.3.3.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-web</artifactId> 
     </dependency> 
     <dependency> 
      <groupId>com.fasterxml.jackson.core</groupId> 
      <artifactId>jackson-databind</artifactId> 
     </dependency> 

     <dependency> 
    <groupId>org.springframework</groupId> 
    <artifactId>spring-aspects</artifactId> 
    <version>3.1.2.RELEASE</version> 
</dependency> 
    </dependencies> 

    <properties> 
     <start-class>com.cave.spring.firstSpring.Application</start-class> 
    </properties> 

    <build> 
     <plugins> 
      <plugin> 
       <groupId>org.codehaus.mojo</groupId> 
       <artifactId>tomcat-maven-plugin</artifactId> 
       <configuration> 
        <url>http://127.0.0.1:8080/manager</url> 
        <server>TomcatServer</server> 
        <path>/firstSpring</path> 
       </configuration> 
      </plugin> 
      <plugin> 
       <artifactId>maven-compiler-plugin</artifactId> 
       <version>2.3.2</version> 
      </plugin> 
      <plugin> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-maven-plugin</artifactId> 
      </plugin> 
     </plugins> 
    </build> 

    <repositories> 
     <repository> 
      <id>spring-snapshots</id> 
      <url>http://repo.spring.io/libs-snapshot</url> 
      <snapshots><enabled>true</enabled></snapshots> 
     </repository> 
    </repositories> 
    <pluginRepositories> 
     <pluginRepository> 
      <id>spring-snapshots</id> 
      <url>http://repo.spring.io/libs-snapshot</url> 
      <snapshots><enabled>true</enabled></snapshots> 
     </pluginRepository> 
    </pluginRepositories> 
</project> 

Answer 1

我最終設法解決了這個問題。我認爲存在一些依賴性問題。我剝離了POM並重新導入了依賴關係

Answer 2

嘗試刪除<version>屬性，在春季啓動父POM中定義的依賴（像你這樣的spring-boot-starter-web）。

<dependencies> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-core</artifactId> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-beans</artifactId> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-context</artifactId> 
    </dependency> 

    <dependency> 
     <groupId>org.mongodb</groupId> 
     <artifactId>mongo-java-driver</artifactId> 
     <version>2.11.0</version> 
     <!-- i dont know if this is defined in the parent pom --> 
    </dependency> 

    <dependency> 
     <groupId>org.springframework.data</groupId> 
     <artifactId>spring-data-mongodb</artifactId> 
     <version>1.3.3.RELEASE</version> 
     <!-- i dont know if this is defined in the parent pom --> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-web</artifactId> 
    </dependency> 
    <dependency> 
     <groupId>com.fasterxml.jackson.core</groupId> 
     <artifactId>jackson-databind</artifactId> 
    </dependency> 

    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-aspects</artifactId>   
    </dependency> 
</dependencies>