JDEPS模块在列出依赖项时未发现异常

Question

我一直在使用JLink为各种Spring Boot应用程序创建最小的JRE。我已经成功地通过尝试和错误找出所需的模块手动做到了这一点。在成功地完成这一任务之后，我一直试图使用JDEPS来自动化这个过程。

第一次尝试是为我的应用程序扫描构建的Jar。我正在使用Java14 jdeps来分析Java11代码库。

jdeps--class-path boot-inf/classes--module-path boot-inf/lib/,${JAVA_HOME}/jmods--add-modules=all-module-path--list-deps target/camel-account-sapi-0.0.2-snapshot.jar

Error: Missing dependencies: classes not found from the module path and classpath.
To suppress this error, use --ignore-missing-deps to continue.

camel-account-sapi-0.0.2-SNAPSHOT.jar
   com.ms3.camelaccountsapi.CamelAccountSapiApplication -> org.springframework.boot.SpringApplication         not found
   com.ms3.camelaccountsapi.CamelAccountSapiApplication -> org.springframework.boot.autoconfigure.SpringBootApplication not found
   com.ms3.camelaccountsapi.CamelAccountSapiApplication -> org.springframework.context.ConfigurableApplicationContext not found
   com.ms3.camelaccountsapi.routes.GeneratedRoutesInterface -> org.apache.camel.builder.RouteBuilder              not found
   com.ms3.camelaccountsapi.routes.GeneratedRoutesInterface -> org.apache.camel.model.rest.RestDefinition         not found
   com.ms3.camelaccountsapi.routes.GeneratedRoutesInterface -> org.apache.camel.model.rest.RestOperationParamDefinition not found
   com.ms3.camelaccountsapi.routes.GeneratedRoutesInterface -> org.apache.camel.model.rest.RestParamType          not found
   com.ms3.camelaccountsapi.routes.GeneratedRoutesInterface -> org.springframework.stereotype.Component           not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> com.datasonnet.document.MediaTypes                 not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.apache.camel.Exchange                          not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.apache.camel.Expression                        not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.apache.camel.LoggingLevel                      not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.apache.camel.Predicate                         not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.apache.camel.builder.DatasonnetBuilder         not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.apache.camel.builder.RouteBuilder              not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.apache.camel.builder.SimpleBuilder             not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.apache.camel.builder.ValueBuilder              not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.apache.camel.model.ChoiceDefinition            not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.apache.camel.model.OnExceptionDefinition       not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.apache.camel.model.ProcessorDefinition         not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.apache.camel.model.RouteDefinition             not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.slf4j.Logger                                   not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.slf4j.LoggerFactory                            not found
   com.ms3.camelaccountsapi.routes.RoutesImplementation -> org.springframework.stereotype.Component           not found
   org.springframework.boot.loader.PropertiesLauncher -> org.springframework.util.Assert                    not found
   org.springframework.boot.loader.jarmode.JarModeLauncher -> org.springframework.core.io.support.SpringFactoriesLoader not found
   org.springframework.boot.loader.jarmode.JarModeLauncher -> org.springframework.util.ClassUtils                not found

java.base
java.logging

接下来，我使用java-djarmode=layertools-jar./target/camel-account-sapi-0.0.2-snapshot.jar extract提取应用程序

这给了我一个boot-inf/lib文件夹，其中包含所有150个JAR依赖项。因此，我尝试运行一个与前面类似的JDeps命令，使用一些额外的选项:jdeps--module-path temp/boot-inf/lib/,${JAVA_HOME}/jmods--add-modules=all-module-path--multi-release 11--list-deps--ignore-missing-deps--recursive--compile-time temp/boot-inf/lib/*

但是，这会导致一个异常

Exception in thread "main" java.lang.module.FindException: Module java.annotation not found, required by org.apache.tomcat.embed.core
    at java.base/java.lang.module.Resolver.findFail(Resolver.java:894)
    at java.base/java.lang.module.Resolver.resolve(Resolver.java:191)
    at java.base/java.lang.module.Resolver.resolve(Resolver.java:140)
    at java.base/java.lang.module.Configuration.resolve(Configuration.java:422)
    at java.base/java.lang.module.Configuration.resolve(Configuration.java:256)
    at jdk.jdeps/com.sun.tools.jdeps.JdepsConfiguration$Builder.build(JdepsConfiguration.java:564)
    at jdk.jdeps/com.sun.tools.jdeps.JdepsTask.buildConfig(JdepsTask.java:603)
    at jdk.jdeps/com.sun.tools.jdeps.JdepsTask.run(JdepsTask.java:557)
    at jdk.jdeps/com.sun.tools.jdeps.JdepsTask.run(JdepsTask.java:533)
    at jdk.jdeps/com.sun.tools.jdeps.Main.main(Main.java:49)

我注意到可以成功地分析/lib文件夹中的一些jar，所以我编写了一个Bash脚本，在忽略异常的情况下对每个/lib jar运行相同的命令。由于未找到模块，150个模块中有15个无法分析，但是从其他135个模块中得到的所需模块列表非常接近。它只缺少一个必需的模块jdk.crypto.ec，并找到了所有其他模块：

java.sql,java.security.jgss,java.logging,java.xml,java.compiler,jdk.unsupported,java.transaction.xa,java.rmi,java.management,java.instrument,java.naming,java.base,java.datatransfer,jdk.httpserver,java.scripting,java.desktop,java.prefs

我是不是走错方向了？或者可以/应该做些什么来解决这些缺失的模块问题？例如，我认为java.annotation上面的“丢失”模块可能存在于其他JAR中？我认为，由于其他15个失败的jdeps命令中的一些，情况就更糟了。

temp/BOOT-INF/lib/tomcat-embed-core-9.0.38.jar
Exception in thread "main" java.lang.module.FindException: Module java.annotation not found, required by org.apache.tomcat.embed.core
    at java.base/java.lang.module.Resolver.findFail(Resolver.java:894)
    at java.base/java.lang.module.Resolver.resolve(Resolver.java:191)
    at java.base/java.lang.module.Resolver.resolve(Resolver.java:140)
    at java.base/java.lang.module.Configuration.resolve(Configuration.java:422)
    at java.base/java.lang.module.Configuration.resolve(Configuration.java:256)
    at jdk.jdeps/com.sun.tools.jdeps.JdepsConfiguration$Builder.build(JdepsConfiguration.java:564)
    at jdk.jdeps/com.sun.tools.jdeps.JdepsTask.buildConfig(JdepsTask.java:603)
    at jdk.jdeps/com.sun.tools.jdeps.JdepsTask.run(JdepsTask.java:557)
    at jdk.jdeps/com.sun.tools.jdeps.JdepsTask.run(JdepsTask.java:533)
    at jdk.jdeps/com.sun.tools.jdeps.Main.main(Main.java:49)
error
temp/BOOT-INF/lib/tomcat-embed-websocket-9.0.38.jar
Exception in thread "main" java.lang.module.FindException: Module org.apache.tomcat.embed.core not found, required by org.apache.tomcat.embed.websocket
    at java.base/java.lang.module.Resolver.findFail(Resolver.java:894)
    at java.base/java.lang.module.Resolver.resolve(Resolver.java:191)
    at java.base/java.lang.module.Resolver.resolve(Resolver.java:140)
    at java.base/java.lang.module.Configuration.resolve(Configuration.java:422)
    at java.base/java.lang.module.Configuration.resolve(Configuration.java:256)
    at jdk.jdeps/com.sun.tools.jdeps.JdepsConfiguration$Builder.build(JdepsConfiguration.java:564)
    at jdk.jdeps/com.sun.tools.jdeps.JdepsTask.buildConfig(JdepsTask.java:603)
    at jdk.jdeps/com.sun.tools.jdeps.JdepsTask.run(JdepsTask.java:557)
    at jdk.jdeps/com.sun.tools.jdeps.JdepsTask.run(JdepsTask.java:533)
    at jdk.jdeps/com.sun.tools.jdeps.Main.main(Main.java:49)
error

Answer 1

我现在正在处理一个非常类似的问题。看起来在tomcat Embed9.0.37和9.0.38之间定义了显式模块信息。与自动模块相比，模块的名称发生了更改。

• java.annotation模块是从annotations-api.jar导出的名称。我不知道它为什么用那个名字。我肯定是有原因的，我只是不明白。
• org.apache.tomcat.embedd.jasper.el更改为org.apache.tomcat.embed.el

我不确定这能让你走多远，但这可能是一个开始。