JDEPS模块在列出受抚养人时未发现异常

Question

我一直在与JLink合作，为各种Spring应用程序创建最小的JRE。我已经通过尝试和错误计算出了所需的模块，成功地完成了这一任务。在成功地完成此操作之后，我一直在尝试使用JDeps来自动化这个过程。

第一次尝试是扫描构建的Jar以查找我的应用程序。我使用Java 14 jdeps来分析Java 11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

这会导致多个未找到的依赖项。

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

添加--ignore-missing-deps会带来一些更有意义的内容--完整但不完整：

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，其中包含了所有150个JAR依赖项。因此，我试图像以前一样运行一个类似的JDeps命令，并附加了几个选项：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/*

然而，这会导致异常。

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JARs，因此我编写了一个Bash脚本，在每个/lib jars上运行相同的命令，同时忽略异常。由于Module not found的原因，150个模块中的15个没有被分析，但是来自其他135个的所需模块的列表非常接近。它只缺少了一个必需的模块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

我走错方向了吗？或者应该做些什么来解决这些缺少的模块问题？例如，我相信java.annotation上面的“缺失”模块可能存在于其他的JAR中吗？我认为，由于其他15个失败的jdeps命令中的几个，情况更加如此。

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类似的问题。它看起来像之间的tomcat嵌入9.0.37和9.0.38显式模块-信息的定义。与自动模块相比，模块的名称发生了变化。

• java.annotation模块是从注释导出的名称-api.jar。我不知道它为什么要用那个名字。我相信这是有原因的，我只是不明白it.
• org.apache.tomcat.embed.jasper.el变成了org.apache.tomcat.embed.el

我不知道这能让你走多远，但这也许是个开始。