Question

我试图在我的CentOS 6.9上安装liquibase，它需要Java（我有mvn spring-boot:run），但出现此错误：

<?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.hiringcupid</groupId>
<artifactId>webpage</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

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

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.1.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>
    <spring-cloud.version>Greenwich.M3</spring-cloud.version>
    <!-- <start-class>com.hiringcupid.webpage.HiringApplication</start-class> -->
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-rest</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>

    <!-- JSTL for JSP -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
    </dependency>

    <!-- Need this to compile JSP -->
    <dependency>
        <groupId>org.apache.tomcat.embed</groupId>
        <artifactId>tomcat-embed-jasper</artifactId>
        <scope>provided</scope>
    </dependency>

    <!-- Need this to compile JSP, 
        tomcat-embed-jasper version is not working, no idea why -->
    <dependency>
        <groupId>org.eclipse.jdt.core.compiler</groupId>
        <artifactId>ecj</artifactId>
        <version>4.6.1</version>
        <scope>provided</scope>
    </dependency>

    <!-- Optional, test for static content, bootstrap CSS-->
    <dependency>
        <groupId>org.webjars</groupId>
        <artifactId>bootstrap</artifactId>
        <version>3.3.7</version>
    </dependency>
</dependencies>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>${spring-cloud.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>


<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>    
            <mainClass>com.hiringcupid.webpage.HiringApplication</mainClass>
        </configuration>
        </plugin>
    </plugins>
</build>

<repositories>
    <repository>
        <id>spring-milestones</id>
        <name>Spring Milestones</name>
        <url>https://repo.spring.io/milestone</url>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </repository>
</repositories>

</project>

我认为缺少某种类，但是我不知道哪种类以及如何将其添加到Java类中。我该怎么办？

Answer 1

openjdk version "1.8.0_121"

aka

[root@sampleliquibase-3.6.2-bin..z]# ll total 11412 drwxrwxrwx. 2 db2inst1 db2iadm1 4096 Dec 17 13:10 lib -rwxrwxrwx. 1 db2inst1 db2iadm1 11358 Jul 3 23:27 LICENSE.txt -rwxrwxrwx. 1 db2inst1 db2iadm1 1251 Jul 3 23:27 liquibase -rwxrwxrwx. 1 db2inst1 db2iadm1 9406606 Dec 17 09:42 liquibase-3.6.2- bin.zip -rwxrwxrwx. 1 db2inst1 db2iadm1 884 Jul 3 23:27 liquibase.bat -rwxrwxrwx. 1 db2inst1 db2iadm1 2167086 Jul 3 23:30 liquibase.jar -rwxrwxrwx. 1 db2inst1 db2iadm1 7174 Jul 3 23:27 liquibase.spec -rwxrwxrwx. 1 db2inst1 db2iadm1 3046 Jul 3 23:27 README.txt drwxrwxrwx. 6 db2inst1 db2iadm1 4096 Dec 17 13:10 sdk -rwxrwxrwx. 1 root root 41203 Mar 16 2017 slf4j-api-1.7.25.jar [root@sampleliquibase-3.6.2-bin..z]# java -jar liquibase.jar Error: A JNI error has occurred, please check your installation and try again Exception in thread "main" java.lang.NoClassDefFoundError: ch/qos/logback/core/filter/Filter at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) at java.lang.Class.privateGetMethodRecursive(Class.java:3048) at java.lang.Class.getMethod0(Class.java:3018) at java.lang.Class.getMethod(Class.java:1784) at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544) at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526) Caused by: java.lang.ClassNotFoundException: ch.qos.logback.core.filter.Filter at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 7 more [root@sampleliquibase-3.6.2-bin..z]#

缺少

，这是Logback的一部分，您可以使用构建脚本将其添加到应用程序中。或从https://mvnrepository.com/artifact/ch.qos.logback/logback-core

手动将其安装到您的lib文件夹中

也许您正在启动错误的文件。除了直接运行jar之外，您可能还必须运行“启动器”脚本。

找出缺少的课程

1 个答案: