Spring Starting抛出一个异常

时间:2014-02-14 19:39:38

标签: java spring maven spring-boot

我正在尝试在春天构建最简单的应用程序,我的单控制器有以下代码

    package User;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * Created by Bula on 14/02/14.
 */
@Controller
public class UsersController {

    @RequestMapping("/user")
    public String index()
    {
        return "user_index";
    }

}

这是Main.java。引导一切的那个:

  package main;

import javafx.application.Application;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;


@ComponentScan
@EnableAutoConfiguration
public class Main {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

这也是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>blog</groupId>
    <artifactId>blog</artifactId>
    <version>1.0-SNAPSHOT</version>
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring</artifactId>
            <version>2.5.6</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>4.0.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-autoconfigure</artifactId>
            <version>1.0.0.BUILD-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot</artifactId>
            <version>1.0.0.BUILD-SNAPSHOT</version>
        </dependency>
    </dependencies>


</project>

我已经更新了maven,因此技术上所有的库都应该在那里。这是抛出的错误(我尝试使用谷歌搜索但没有出现任何接近我所面临的情况):

    Exception in thread "main" java.lang.NoSuchMethodError: org.springframework.core.annotation.AnnotationAwareOrderComparator.sort(Ljava/util/List;)V
    at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:371)
    at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:343)
    at org.springframework.boot.SpringApplication.initialize(SpringApplication.java:221)
    at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:197)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:877)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:866)
    at main.Main.main(Main.java:14)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)

Process finished with exit code 1

我的user_index.html确实存在,但我不认为错误与它有任何关联,因为它只有一个html标记。 这是我拥有的所有库的图像: enter image description here

2 个答案:

答案 0 :(得分:7)

所以我从你的pom在Eclipse中创建了一个maven项目。我发现你在两个罐子里得到了org.springframework.core.annotation.AnnotationAwareOrderComparator。 2.5.2弹簧罐和4.0。摆脱2.5.2罐子。那太旧了。新jar与新代码调用的方法具有相同的类。

问题的核心是你加载核心罐子。

答案 1 :(得分:0)

以上的回答(维蒙迪)在某种意义上是正确的,即两类“碰撞”。就我而言,我正在定义我的Maven依赖项

<!-- Provided Spring dependencies spring-beans, spring-context, spring-core, spring-tx -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>4.2.4.RELEASE</version>
    </dependency>

但是我的类路径中有一个旧的Spring jar,而该版本中确实没有此方法

java.lang.NoSuchMethodError: org.springframework.core.annotation.AnnotationAwareOrderComparator.sort(Ljava/util/List;)V