Spring启动示例:无法启动嵌入式容器错误

时间:2017-01-26 17:35:59

标签: spring spring-boot

我是Spring的新手,所以我从spring intializr下载了jar for maven-web java 1.8 demo。我解压缩并将其导入STS以运行main()文件,然后我得到以下异常。有人可以告诉我这是什么解决方案吗?

我尝试过网络解决方案,但没有工作: - 尝试将Hibernate-validator依赖项添加到pom - 尝试将spring-boot-starter-tomcat依赖添加到pom

STACK TRACE:

2017-01-26 12:19:32.587  INFO 3816 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@2e4b8173: startup date [Thu Jan 26 12:19:32 EST 2017]; root of context hierarchy
2017-01-26 12:19:36.442  WARN 3816 --- [           main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'tomcatEmbeddedServletContainerFactory' defined in class path resource [org/springframework/boot/autoconfigure/web/EmbeddedServletContainerAutoConfiguration$EmbeddedTomcat.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.boot.autoconfigure.web.HttpEncodingAutoConfiguration': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'spring.http.encoding-org.springframework.boot.autoconfigure.web.HttpEncodingProperties': Initialization of bean failed; nested exception is javax.validation.ValidationException: Unable to create a Configuration, because no Bean Validation provider could be found. Add a provider like Hibernate Validator (RI) to your classpath.
2017-01-26 12:19:36.454 ERROR 3816 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

The Bean Validation API is on the classpath but no implementation could be found

Action:

Add an implementation, such as Hibernate Validator, to the classpath

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>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

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

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

    </dependencies>

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


</project>

申请文件:

package com.example;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DemoApplication {

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

5 个答案:

答案 0 :(得分:5)

与Spring Boot的1.5.9版本有同样的问题。 要通过Jim Kiley添加答案,您应该在Maven pom.xml中添加以下内容:

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>5.3.6.Final</version>
</dependency>

您可以使用Spring Boot pom.xml文件的属性部分下的依赖项版本(spring-boot-dependencies-1.5.9.RELEASE.pom):

<hibernate-validator.version>5.3.6.Final</hibernate-validator.version>

位于路径下:

/.m2/repository/org/springframework/boot/spring-boot-dependencies/1.5.9.RELEASE/spring-boot-dependencies-1.5.9.RELEASE.pom

答案 1 :(得分:3)

如输出所示,您需要:

  

将一个实现(如Hibernate Validator)添加到类路径

由于您正在使用Maven,这意味着您需要将Hibernate Validator添加到您的pom.xml的依赖项中。

答案 2 :(得分:3)

首先,您的pom.xml设置是正确的。 spring-boot-starter-web依赖于hibernate-validator。 因此,在您的项目中,您不需要指定对hibernate-validator的依赖关系。否则,使用maven的目的是什么?

回到决议,我为解决问题所采取的步骤是:

  1. 转到pom.xml所在的项目文件夹。
  2. 运行mvn verify 该命令将再次从存储库下载缺少的jar,并检查maven本地存储库中jar的正确性(是否已损坏)。

    如果您看到类似以下的警告消息:

      

    [警告]错误读取/home/vagrant/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/8.5.6/tomcat-embed-core-8.5.6.jar; LOC标题无效(签名错误)

         

    [警告]错误读取/home/vagrant/.m2/repository/org/hibernate/hibernate-validator/5.2.4.Final/hibernate-validator-5.2.4.Final.jar; LOC标题无效(签名错误)

         

    [警告]错误读取/home/vagrant/.m2/repository/com/fasterxml/jackson/core/jackson-core/2.8.4/jackson-core-2.8.4.jar; LOC标题无效(签名错误)

    然后这意味着maven以前下载的罐子已经损坏。

  3. 要更正此问题,请删除这些已损坏的广告罐并再次运行mvn verify以重新下载它们,并确保没有对广告系列发出警告。

  4. 返回IDE(STS或Eclipse),更新项目并再次运行应用程序。
  5. 在上面的错误中,hibernate-validator-5.2.4.Final.jar是问题的休眠验证器。

答案 3 :(得分:0)

我遇到了同样的问题并通过删除.m2

下的这两个文件夹解决了这个问题
  • com \ fasterxml - &gt;删除它将解决TypeResovler问题。
  • org \ springframework - &gt;删除它将解决缺乏验证器 问题。
然后程序就可以了。

答案 4 :(得分:0)

在运行应用程序时遇到相同的问题,并通过删除.m2文件夹解决了该问题。

.m2 /存储库