spring 引导 jar 不适用于 -cp 选项

Question

我一直使用 spring-boot 创建 uber jar 并使用 java -jar springboot.jar 命令启动容器。现在我的要求改变了，我需要指向外部 classpath 如下，这是不固定的。我仍然为 spring 启动创建 uber jar。 java -Dprofile=dev -cp springboot.jar:/usr/local/hadoop/lib/*:/usr/local/hbase/lib/* com.myapp.Application

它抛出以下内容：

Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/scheduling/annotation/AsyncConfigurer
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
    at java.net.URLClassLoader.access0(URLClassLoader.java:71)
    at java.net.URLClassLoader.run(URLClassLoader.java:361)
    at java.net.URLClassLoader.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
Caused by: java.lang.ClassNotFoundException: org.springframework.scheduling.annotation.AsyncConfigurer
    at java.net.URLClassLoader.run(URLClassLoader.java:366)
    at java.net.URLClassLoader.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    ... 13 more

我的应用程序 class 使用 org.springframework.scheduling.annotation.AsyncConfigurer

这是专家：

<plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludeGroupIds>org.apache.hadoop,org.apache.hbase</excludeGroupIds>
                    <excludeArtifactIds>hadoop-yarn-common,hadoop-yarn-client,hadoop-annotations,hadoop-yarn-api,hadoop-mapreduce-client-jobclient,
                    hadoop-mapreduce-client-shuffle,hadoop-mapreduce-client-app,hadoop-mapreduce-client-core,hadoop-mapreduce-client-common,
                    hadoop-yarn-server-common,hadoop-hdfs,hadoop-auth,hadoop-common,parquet-hadoop,hadoop-client</excludeArtifactIds>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifest>
                            <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>lib/</classpathPrefix>
                            <mainClass>com.myApp.Application</mainClass>
                        </manifest>
                        <manifestEntries>
                            <Build-Scm-Branch>${scmBranch}</Build-Scm-Branch>
                            <Build-Revision-Number>${buildNumber}</Build-Revision-Number>
                            <Timestamp>${timestamp}</Timestamp>
                        </manifestEntries>
                    </archive>
                </configuration>
            </plugin>

我注意到一件事 spring-boot-maven-plugin 将所有 uber jar 保存在 lib 文件夹中，而不是将每个 class 提取到像 shade 插件那样的平面层次结构中。我不知道这是否是 -cp 无法识别任何超级 classes 的原因？

谢谢

Answer 1

如果您通过为 spring-boot-maven-plugin 设置 <layout>ZIP</laout> 来使用 PropertiesLauncher，您可以使用 loader.path 属性扩展您的类路径。例如：

java -Dprofile=dev -Dloader.path=springboot.jar,/usr/local/hadoop/lib,/usr/local/hbase/lib -jar springboot.jar

参见 spring 靴子参考指南中的 http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#executable-jar-property-launcher-features。

spring 引导 jar 不适用于 -cp 选项

spring boot jar doesn't work with -cp option

maven-plugin

spring-boot