代码之家  ›  专栏  ›  技术社区  ›  dvelopp

Java代理忽略应用程序类路径

javaagents classpath java
  •  0
  • dvelopp  · 技术社区  · 6 年前

    我正在编写我的第一个Java代理,我遇到了一个问题,它不加载我附加代理的应用程序的类。

    目前,代理非常简单: 

    public class Main {

    public static void premain(String agentArgs, Instrumentation inst) {
        transformClass(inst);
    }

    public static void agentmain(String agentArgs, Instrumentation inst) {
        transformClass(inst);
    }

    private static void transformClass(Instrumentation instrumentation) {
        System.out.println("Hello from agent!");
        for (Class<?> clazz : instrumentation.getAllLoadedClasses()) {
            System.out.println(clazz.getName());
        }
    }

}

    显示 : 

    Manifest-Version: 1.0
Can-Set-Native-Method-Prefix: true
Premain-Class: com.dvelopp.agenttest.Main
Agent-Class: com.dvelopp.agenttest.Main
Can-Redefine-Classes: true
Can-Retransform-Classes: true

    当我用这个代理运行我的应用程序时,它只打印它的类(我的应用程序的主类不打印)。

    我的应用程序: 

    package com.dvelopp.agentconsumer;

public class Test {

    public static void main(String[] args) {
        System.out.println("Hello World!");
    }
}

    运行结果: 

    java -javaagent:./agenttest/target/agent-test-1.0-SNAPSHOT-jar-with-dependencies.jar -cp ./agent-consumer/out/production/agent-consumer/ com.dvelopp.agentconsumer.Test
com.dvelopp.agenttest.Main
java.util.stream.FindOps$FindSink$OfRef$$Lambda$13/0x0000000800063440
java.util.stream.FindOps$FindSink$OfRef$$Lambda$12/0x0000000800063040
java.util.stream.FindOps$FindSink$OfRef$$Lambda$11/0x0000000800062c40
java.util.stream.FindOps$FindSink$OfRef$$Lambda$10/0x0000000800062840
jdk.internal.module.DefaultRoots$$Lambda$9/0x0000000800062440
java.util.stream.Collectors$$Lambda$8/0x0000000800062040
java.util.stream.Collectors$$Lambda$7/0x0000000800061c40
java.util.stream.Collectors$$Lambda$6/0x0000000800061840
java.util.stream.Collectors$$Lambda$5/0x0000000800061440
jdk.internal.module.DefaultRoots$$Lambda$4/0x0000000800061040
jdk.internal.module.DefaultRoots$$Lambda$3/0x0000000800060c40
jdk.internal.module.DefaultRoots$$Lambda$2/0x0000000800060840
java.lang.invoke.LambdaForm$MH/0x0000000800060440
jdk.internal.module.DefaultRoots$$Lambda$1/0x0000000800060040
sun.instrument.InstrumentationImpl$1
sun.security.util.Debug
java.security.SecureClassLoader$DebugHolder
java.security.BasicPermissionCollection
java.lang.RuntimePermission
java.security.UnresolvedPermission
java.security.AllPermission
java.io.FilePermissionCollection$1
java.io.FilePermissionCollection
java.security.Permissions$1
sun.security.util.FilePermCompat
java.io.FilePermission$1
jdk.internal.misc.JavaIOFilePermissionAccess
java.io.FilePermission
sun.net.www.MessageHeader
sun.net.www.protocol.file.FileURLConnection
sun.net.www.URLConnection
java.net.URLConnection
java.security.Permissions
java.security.PermissionCollection
java.security.SecureClassLoader$1
java.security.SecureClassLoader$CodeSourceKey
sun.nio.ByteBuffered
java.lang.Package$VersionInfo
java.lang.Package
java.lang.NamedPackage
java.util.jar.Attributes$Name
sun.nio.cs.StandardCharsets$Cache
sun.nio.cs.StandardCharsets$Aliases
sun.util.PreHashedMap
java.util.jar.Manifest$FastInputStream
java.util.jar.Attributes
java.lang.StringCoding$Result
jdk.internal.loader.URLClassPath$JarLoader$2
jdk.internal.loader.Resource
java.util.zip.ZipFile$InflaterCleanupAction
java.util.zip.Inflater$InflaterZStreamRef
java.util.zip.Inflater
java.util.zip.ZipFile$ZipFileInflaterInputStream
java.util.zip.InflaterInputStream
java.util.zip.ZipFile$ZipFileInputStream
java.util.jar.JarFile$JarFileEntry
java.util.jar.JarEntry
java.util.zip.ZipEntry
java.util.jar.JarFile$1
jdk.internal.util.jar.JarIndex
java.nio.DirectLongBufferU
java.nio.LongBuffer
java.nio.Bits$1
jdk.internal.misc.JavaNioAccess$BufferPool
java.util.concurrent.atomic.AtomicLong
java.nio.Bits
java.nio.DirectByteBuffer
java.nio.MappedByteBuffer
sun.nio.ch.DirectBuffer
jdk.internal.perf.PerfCounter$CoreCounters
jdk.internal.perf.Perf
jdk.internal.perf.Perf$GetPerfAction
jdk.internal.perf.PerfCounter
java.util.zip.ZipUtils
java.util.zip.ZipFile$Source$End
java.io.FileCleanable
[Ljava.lang.invoke.MemberName;
[Ljava.lang.invoke.VarHandle$AccessMode;
java.lang.invoke.VarHandle$AccessMode
[Ljava.lang.invoke.VarHandle$AccessType;
java.lang.invoke.VarHandle$AccessType
java.lang.invoke.VarForm
java.lang.invoke.VarHandleGuards
jdk.internal.util.Preconditions$1
java.lang.invoke.VarHandle$1
java.lang.invoke.VarHandleInts$FieldInstanceReadWrite
java.lang.invoke.VarHandleInts$FieldInstanceReadOnly
java.lang.invoke.VarHandles
java.util.concurrent.atomic.AtomicBoolean
java.io.RandomAccessFile$2
jdk.internal.misc.JavaIORandomAccessFileAccess
java.io.RandomAccessFile
java.io.DataInput
java.io.DataOutput
java.nio.file.attribute.FileTime
[Ljava.util.concurrent.TimeUnit;
java.util.concurrent.TimeUnit
sun.nio.fs.UnixFileAttributes$UnixAsBasicFileAttributes
[Lsun.nio.fs.NativeBuffer;
sun.nio.fs.NativeBuffer$Deallocator
sun.nio.fs.NativeBuffer
java.util.IdentityHashMap$KeySet
java.util.IdentityHashMap
jdk.internal.misc.TerminatingThreadLocal$1
sun.nio.fs.NativeBuffers$1
sun.nio.fs.NativeBuffers
sun.nio.fs.UnixFileAttributeViews$Basic
sun.nio.fs.AbstractBasicFileAttributeView
sun.nio.fs.DynamicFileAttributeView
sun.nio.fs.UnixFileAttributeViews
java.nio.file.attribute.BasicFileAttributeView
java.nio.file.attribute.FileAttributeView
java.nio.file.attribute.AttributeView
java.nio.file.Files
[Ljava.nio.file.LinkOption;
[Ljava.nio.file.CopyOption;
java.nio.file.LinkOption
java.nio.file.CopyOption
java.net.URI$Parser
java.nio.file.FileSystems$DefaultFileSystemHolder$1
java.nio.file.FileSystems$DefaultFileSystemHolder
[Ljava.nio.charset.CoderResult;
java.nio.charset.CoderResult
java.nio.HeapCharBuffer
java.nio.CharBuffer
java.lang.Readable
jdk.internal.misc.TerminatingThreadLocal
[Ljava.lang.ThreadLocal$ThreadLocalMap$Entry;
java.lang.ThreadLocal$ThreadLocalMap$Entry
java.lang.ThreadLocal$ThreadLocalMap
sun.nio.fs.UnixMountEntry 
jdk.internal.misc.JavaUtilZipFileAccess
java.util.zip.ZipFile
java.util.zip.ZipConstants
jdk.internal.loader.URLClassPath$JarLoader
jdk.internal.loader.URLClassPath$FileLoader
jdk.internal.loader.URLClassPath$Loader
java.util.concurrent.ConcurrentHashMap$ValueIterator
java.util.Enumeration
java.util.concurrent.ConcurrentHashMap$ValuesView
jdk.internal.loader.URLClassPath$3
java.security.PrivilegedExceptionAction
sun.util.locale.InternalLocaleBuilder$CaseInsensitiveChar
sun.util.locale.InternalLocaleBuilder
sun.util.locale.LocaleUtils
sun.util.locale.LocaleObjectCache$CacheEntry
sun.util.locale.BaseLocale$Key
sun.util.locale.BaseLocale$Cache
sun.util.locale.BaseLocale
java.util.Locale$Cache
sun.util.locale.LocaleObjectCache
java.util.Locale
sun.net.util.URLUtil
[Lsun.instrument.TransformerManager$TransformerInfo;
sun.instrument.TransformerManager$TransformerInfo
sun.instrument.TransformerManager
java.util.ArrayDeque$DeqIterator
java.lang.ClassLoader$NativeLibrary
java.lang.ClassLoader$2
sun.instrument.InstrumentationImpl
java.lang.instrument.Instrumentation
java.lang.InternalError
jdk.internal.module.ModuleBootstrap$SafeModuleFinder
jdk.internal.module.IllegalAccessLogger
jdk.internal.module.ModuleBootstrap$2
jdk.internal.module.IllegalAccessLogger$Builder
[Ljdk.internal.module.IllegalAccessLogger$Mode;
jdk.internal.module.IllegalAccessLogger$Mode
java.lang.ModuleLayer$Controller
jdk.internal.module.ServicesCatalog$ServiceProvider
java.util.concurrent.CopyOnWriteArrayList
java.util.concurrent.ConcurrentHashMap$ForwardingNode
jdk.internal.module.ModuleLoaderMap$Mapper
jdk.internal.module.ModuleLoaderMap
java.util.Collections$UnmodifiableRandomAccessList
java.util.Collections$UnmodifiableList
[Ljava.lang.module.ResolvedModule;
java.lang.module.ResolvedModule
java.util.Collections$UnmodifiableCollection$1
java.util.LinkedHashSet
java.util.HashMap$ValueIterator
java.util.HashMap$Values
java.lang.ModuleLayer
java.lang.module.ModuleFinder$1
[Ljava.nio.file.Path;
[Ljava.lang.Iterable;
[Ljava.nio.file.Watchable;
java.nio.file.Path
java.nio.file.Watchable
java.lang.module.Resolver
java.lang.module.Configuration
java.util.ImmutableCollections$Set12$1
java.util.stream.FindOps$FindOp
java.util.stream.FindOps$FindSink$OfRef
java.util.stream.FindOps$FindSink
java.util.stream.FindOps
java.util.stream.ReferencePipeline$2$1
java.util.stream.ReferencePipeline$3$1
java.util.stream.Sink$ChainedReference
java.util.stream.ReduceOps$3ReducingSink
java.util.stream.ReduceOps$Box
java.util.stream.ReduceOps$AccumulatingSink
java.util.stream.TerminalSink
java.util.stream.Sink
java.util.function.Consumer
java.util.stream.ReduceOps$3
java.util.stream.ReduceOps$ReduceOp
java.util.stream.TerminalOp
java.util.stream.ReduceOps
java.util.function.BinaryOperator
java.util.function.BiFunction
java.util.function.BiConsumer
java.lang.invoke.DirectMethodHandle$Interface
java.lang.invoke.DirectMethodHandle$Constructor
java.util.stream.Collectors$CollectorImpl
java.util.stream.Collector
java.util.Collections$UnmodifiableSet
java.util.Collections$UnmodifiableCollection
java.util.RegularEnumSet
java.util.EnumSet
[Ljava.util.stream.Collector$Characteristics;
java.util.stream.Collector$Characteristics
java.util.stream.Collectors
jdk.internal.org.objectweb.asm.FieldWriter
jdk.internal.org.objectweb.asm.FieldVisitor
java.util.stream.ReferencePipeline$3
[Ljava.util.stream.StreamShape;
java.util.stream.StreamShape
java.util.stream.ReferencePipeline$2
java.util.stream.ReferencePipeline$StatelessOp
jdk.internal.misc.InnocuousThread$2
jdk.internal.misc.InnocuousThread$3
[Ljava.security.ProtectionDomain;
jdk.internal.misc.InnocuousThread
jdk.internal.ref.CleanerFactory$1$1
jdk.internal.ref.CleanerImpl$CleanerCleanable
jdk.internal.ref.CleanerImpl$SoftCleanableRef
jdk.internal.ref.SoftCleanable
jdk.internal.ref.CleanerImpl$WeakCleanableRef
jdk.internal.ref.WeakCleanable
jdk.internal.ref.CleanerImpl$PhantomCleanableRef
jdk.internal.ref.PhantomCleanable
java.lang.ref.Cleaner$Cleanable
jdk.internal.ref.CleanerImpl
java.lang.ref.Cleaner$1
java.lang.ref.Cleaner
jdk.internal.ref.CleanerFactory$1
java.util.concurrent.ThreadFactory
jdk.internal.ref.CleanerFactory
java.util.ArrayList$Itr
java.lang.invoke.InvokerBytecodeGenerator$CpPatch
java.lang.invoke.LambdaFormBuffer
java.lang.invoke.LambdaFormEditor$Transform
java.lang.invoke.LambdaFormEditor
java.lang.invoke.DelegatingMethodHandle$Holder
java.lang.invoke.MethodHandleImpl$IntrinsicMethodHandle
java.lang.invoke.DelegatingMethodHandle
sun.invoke.util.Wrapper$1
java.lang.invoke.DirectMethodHandle$Accessor
java.lang.invoke.DirectMethodHandle$1
sun.invoke.empty.Empty
sun.invoke.util.VerifyType
java.lang.invoke.BoundMethodHandle$Species_L
java.lang.NoSuchFieldException
java.util.ImmutableCollections$ListItr
java.util.ListIterator
java.lang.invoke.SimpleMethodHandle
[Ljava.lang.invoke.BoundMethodHandle$SpeciesData;
[Ljava.lang.invoke.ClassSpecializer$SpeciesData;
java.lang.invoke.BoundMethodHandle$Specializer$Factory
java.lang.invoke.ClassSpecializer$Factory
java.util.ImmutableCollections$SubList
java.lang.invoke.BoundMethodHandle$SpeciesData
java.lang.invoke.ClassSpecializer$SpeciesData
java.lang.invoke.ClassSpecializer$1
java.util.function.Function
java.lang.invoke.BoundMethodHandle$Specializer
java.lang.invoke.ClassSpecializer
java.lang.invoke.BoundMethodHandle
java.lang.invoke.InnerClassLambdaMetafactory$1
[[I
java.lang.invoke.InnerClassLambdaMetafactory$ForwardingMethodGenerator
java.lang.invoke.TypeConvertingMethodAdapter
jdk.internal.org.objectweb.asm.AnnotationWriter
jdk.internal.org.objectweb.asm.AnnotationVisitor
jdk.internal.org.objectweb.asm.Frame
jdk.internal.org.objectweb.asm.Label
jdk.internal.org.objectweb.asm.MethodWriter
jdk.internal.org.objectweb.asm.MethodVisitor
[Ljava.util.concurrent.ConcurrentHashMap$CounterCell;
[Ljdk.internal.org.objectweb.asm.Item;
jdk.internal.org.objectweb.asm.Item
jdk.internal.org.objectweb.asm.ByteVector
jdk.internal.org.objectweb.asm.ClassWriter
jdk.internal.org.objectweb.asm.ClassVisitor
sun.invoke.util.BytecodeDescriptor
java.lang.invoke.InfoFromMemberName
java.lang.invoke.MethodHandleInfo
[Ljdk.internal.org.objectweb.asm.Type;
jdk.internal.org.objectweb.asm.Type
java.lang.invoke.InnerClassLambdaMetafactory
java.lang.invoke.AbstractValidatingLambdaMetafactory
java.lang.invoke.MethodHandleImpl$1
jdk.internal.misc.JavaLangInvokeAccess
java.lang.invoke.Invokers$Holder
java.lang.invoke.BootstrapMethodInvoker
java.util.function.Predicate
java.lang.WeakPairMap$Pair$Lookup
java.lang.WeakPairMap$Pair
java.lang.WeakPairMap
java.lang.Module$ReflectionData
java.lang.invoke.InvokerBytecodeGenerator$2
java.lang.invoke.InvokerBytecodeGenerator
[Ljava.lang.invoke.MethodHandleImpl$Intrinsic;
java.lang.invoke.MethodHandleImpl$Intrinsic
java.lang.invoke.LambdaForm$Holder
[[Ljava.lang.invoke.LambdaForm$Name;
[[Ljava.lang.Object;
[Ljava.lang.Cloneable;
[Ljava.lang.invoke.LambdaForm$Name;
java.lang.invoke.LambdaForm$Name
[Ljava.lang.invoke.LambdaForm$BasicType;
java.lang.invoke.LambdaForm$BasicType
java.lang.NoSuchMethodException
[Ljava.lang.invoke.LambdaForm$Kind;
java.lang.invoke.LambdaForm$Kind
java.lang.invoke.Invokers
java.lang.invoke.MethodHandleImpl
sun.invoke.util.ValueConversions
java.lang.invoke.DirectMethodHandle$Holder
[Ljava.lang.invoke.LambdaForm$NamedFunction;
java.lang.invoke.LambdaForm$NamedFunction
[Ljava.lang.invoke.LambdaForm;
[Lsun.invoke.util.Wrapper;
sun.invoke.util.Wrapper$Format
sun.invoke.util.Wrapper
sun.invoke.util.VerifyAccess
[Ljava.lang.invoke.MethodHandle;
java.lang.reflect.ReflectPermission
java.security.BasicPermission
java.security.Permission
java.security.Guard
java.lang.invoke.MemberName$Factory
java.lang.invoke.MethodHandles
[Ljava.lang.ref.SoftReference;
java.lang.invoke.MethodTypeForm
java.lang.Void
java.lang.invoke.MethodType$ConcurrentWeakInternSet$WeakEntry
[Ljava.lang.invoke.MethodType;
java.lang.invoke.MethodType$ConcurrentWeakInternSet
java.lang.invoke.MethodHandles$Lookup
java.lang.invoke.LambdaMetafactory
[Ljava.util.stream.StreamOpFlag;
jdk.internal.reflect.DelegatingMethodAccessorImpl
jdk.internal.reflect.NativeMethodAccessorImpl
[Ljava.lang.annotation.Annotation;
sun.reflect.annotation.AnnotationParser
java.util.HashMap$EntryIterator
java.util.HashMap$EntrySet
java.lang.Class$3
java.lang.PublicMethods$Key
java.lang.PublicMethods$MethodList
[Ljava.lang.reflect.Method;
java.util.EnumMap$1

    …[StackOverflow不允许放置这么多字符] 

    java.lang.invoke.MethodHandleNatives
java.lang.invoke.ResolvedMethodName
java.lang.invoke.MemberName
java.lang.invoke.VarHandle
java.lang.invoke.DirectMethodHandle
java.lang.invoke.MethodHandle
jdk.internal.reflect.CallerSensitive
java.lang.annotation.Annotation
jdk.internal.reflect.UnsafeStaticFieldAccessorImpl
jdk.internal.reflect.UnsafeFieldAccessorImpl
jdk.internal.reflect.FieldAccessorImpl
jdk.internal.reflect.FieldAccessor
jdk.internal.reflect.ConstantPool
jdk.internal.reflect.DelegatingClassLoader
jdk.internal.reflect.ConstructorAccessorImpl
jdk.internal.reflect.ConstructorAccessor
jdk.internal.reflect.MethodAccessorImpl
jdk.internal.reflect.MethodAccessor
jdk.internal.reflect.MagicAccessorImpl
java.lang.reflect.Constructor
java.lang.reflect.Method
java.lang.reflect.Executable
java.lang.reflect.Parameter
java.lang.reflect.Field
java.lang.reflect.Member
java.lang.reflect.AccessibleObject
java.lang.Module
java.util.Properties
java.util.Hashtable
java.util.Dictionary
java.util.Map
java.lang.ThreadGroup
java.lang.Thread$UncaughtExceptionHandler
java.lang.Thread
java.lang.Runnable
java.lang.ref.Finalizer
java.lang.ref.PhantomReference
java.lang.ref.FinalReference
java.lang.ref.WeakReference
java.lang.ref.SoftReference
java.lang.ref.Reference
java.lang.IllegalMonitorStateException
java.lang.StackOverflowError
java.lang.OutOfMemoryError
java.lang.VirtualMachineError
java.lang.ArrayStoreException
java.lang.ClassCastException
java.lang.NoClassDefFoundError
java.lang.LinkageError
java.lang.ClassNotFoundException
java.lang.ReflectiveOperationException
java.security.SecureClassLoader
java.security.AccessControlContext
java.security.ProtectionDomain
java.lang.SecurityManager
java.lang.RuntimeException
java.lang.Exception
java.lang.ThreadDeath
java.lang.Error
java.lang.Throwable
java.lang.System
java.lang.ClassLoader
java.lang.Cloneable
java.lang.Class
java.lang.reflect.Type
java.lang.reflect.GenericDeclaration
java.lang.reflect.AnnotatedElement
java.lang.String
java.lang.CharSequence
java.lang.Comparable
java.io.Serializable
java.lang.Object
[J
[I
[S
[B
[D
[F
[C
[Z
Hello World!

    有com.dvelopp.agentest.main,但没有com.dvelopp.agentconsumer.test。为什么它会忽略我的应用程序的类路径?

    1 回复  |  直到 6 年前
        1
  •  1
  •   Rafael Winterhalter    6 年前

    这个 premain 方法在 main 方法。如方法名所示,数组中只包含已加载的类。在执行代理时,还没有加载主类。

    推荐文章
    junsung kang  ·  Cassandra突然挂起,返回WindowsFileSystemException:“该进程不可访问,因为该文件正被另一个进程使用”
    1 年前
    vaibhav nalamalpu  ·  Intellij 2023.1无法打开(即使在重新安装后)[关闭]
    1 年前
    Katlock  ·  如何在Spring中将Restpage转换为特定的对象类型?
    1 年前
    Edward Khazzoum  ·  为什么在H2数据库中创建表时出现错误4201-214?
    1 年前
    Yellow Blood  ·  If语句在应为[重复]时未返回True
    1 年前
    user21749640  ·  List.contents(A)返回false,但List.contens(B)和B.equals(A)是否返回true?
    1 年前
    MysticSticker  ·  如何在savedPreferences中保存按钮[]文本
    1 年前
    Pektra Mom  ·  如何将数组中的所有字符串替换为特定的特殊字符
    1 年前
    Nitin Kshirsagar  ·  在谷歌云上将java8迁移到java11/17是强制性的吗
    1 年前
    changhoon seong  ·  为什么这个代码没有按照我想的方式输出?(关于班次)
    1 年前
    关于  
    代码之家 - 一站式码农服务社区
    沪ICP备11025650号