我是AS400-Java编程的新手。我正在尝试创建我的第一个程序来测试消息验证代码（MAC）的实现。我正在尝试使用HMACSHA1哈希函数。我的（Java 1.4）程序在开发框（V5R4）上运行良好。但是在QA框（V5R3）上非常失败。我的计划如下：
=============================================== ==
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.Security;
import java.security.Provider;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import javax.crypto.SecretKey;
public class Test01
{
private static final String HMAC_SHA1_ALGORITHM = "HmacSHA1";
public static void main (String [] arguments)
{
byte[] key = { 1,2,3,4,5,6,7,8};
SecretKeySpec SHA1key = new SecretKeySpec(key, "HmacSHA1");
Mac hmac;
String strFinalRslt = "";
try {
hmac = Mac.getInstance("HmacSHA1");
hmac.init(SHA1key);
byte[] result = hmac.doFinal();
strFinalRslt = toHexString(result);
}catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}catch (InvalidKeyException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}catch(StackOverflowError e){
e.printStackTrace();
}
System.out.println(strFinalRslt);
System.out.println("All done!!!");
}
public static byte[] fromHexString ( String s )
{
int stringLength = s.length();
if ( (stringLength & 0x1) != 0 )
{
throw new IllegalArgumentException ( "fromHexString requires an even number of hex characters" );
}
byte[] b = new byte[stringLength / 2];
for ( int i=0,j=0; i>> 4] );
//look up low nibble char
sb.append( hexChar [b[i] & 0x0f] );
}
return sb.toString();
}
static char[] hexChar = {
'0' , '1' , '2' , '3' ,
'4' , '5' , '6' , '7' ,
'8' , '9' , 'a' , 'b' ,
'c' , 'd' , 'e' , 'f'};
}
这个程序编译得很好，并在我的win-xp客户端和我的开发盒上获得正确的响应。但是，在QA框中出现以下错误失败：
java.lang.StackOverflowError
at java.lang.Throwable.(Throwable.java:180)
at java.lang.Error.(Error.java:37)
at java.lang.StackOverflowError.(StackOverflowError.java:24)
at java.io.Os400FileSystem.list(Native method)
at java.io.File.list(File.java:922)
at javax.crypto.b.e(Unknown source)
at javax.crypto.b.a(Unknown source)
at javax.crypto.b.c(Unknown source)
at javax.crypto.b£0.run(Unknown source)
at javax.crypto.b.(Unknown source)
at javax.crypto.Mac.getInstance(Unknown source)
我已经验证了java.security文件，并且对应于jce文件的条目都可以。 DMPJVM命令给出了以下响应：
Thu Jun 03 12:25:34 E
Java Virtual Machine Information 016822/QPGMR/11111
........................................................................
. Classpath .
........................................................................
java.version=1.4
sun.boot.class.path=/QIBM/ProdData/OS400/Java400/jdk/lib/jdkptf14.zip:/QIBM
/ProdData/OS400/Java400/ext/ibmjssefw.jar:/QIBM/ProdData/CAP/ibmjsseprovide
r.jar:/QIBM/ProdData/OS400/Java400/ext/ibmjsseprovider2.jar:/QIBM/ProdData/
OS400/Java400/ext/ibmpkcs11impl.jar:/QIBM/ProdData/CAP/ibmjssefips.jar:/QIB
M/ProdData/OS400/Java400/jdk/lib/IBMiSeriesJSSE.jar:/QIBM/ProdData/OS400/Ja
va400/jdk/lib/jce.jar:/QIBM/ProdData/OS400/Java400/jdk/lib/jaas.jar:/QIBM/P
rodData/OS400/Java400/jdk/lib/ibmcertpathfw.jar:/QIBM/ProdData/OS400/Java40
0/jdk/lib/ibmcertpathprovider.jar:/QIBM/ProdData/OS400/Java400/ext/ibmpkcs.
jar:/QIBM/ProdData/OS400/Java400/jdk/lib/ibmjgssfw.jar:/QIBM/ProdData/OS400
/Java400/jdk/lib/ibmjgssprovider.jar:/QIBM/ProdData/OS400/Java400/jdk/lib/s
ecurity.jar:/QIBM/ProdData/OS400/Java400/jdk/lib/charsets.jar:/QIBM/ProdDat
a/OS400/Java400/jdk/lib/resources.jar:/QIBM/ProdData/OS400/Java400/jdk/lib/
rt.jar:/QIBM/ProdData/OS400/Java400/jdk/lib/sunrsasign.jar:/QIBM/ProdData/O
S400/Java400/ext/IBMmisc.jar:/QIBM/ProdData/Java400/
java.class.path=/myhome/lib/commons-codec-1.3.jar:/myhome/lib/commons-httpc
lient-3.1.jar:/myhome/lib/commons-logging-1.1.jar:/myhome/lib/log4j-1.2.15.jar:/myhome/lib/log4j-core.jar
;
java.ext.dirs=/QIBM/ProdData/OS400/Java400/jdk/lib/ext:/QIBM/UserData/Java4
00/ext:/QIBM/ProdData/Java400/jdk14/lib/ext
java.library.path=/QSYS.LIB/ROBOTLIB.LIB:/QSYS.LIB/QTEMP.LIB:/QSYS.LIB/ODIP
GM.LIB:/QSYS.LIB/QGPL.LIB
........................................................................
. Garbage Collection .
........................................................................
Garbage collector parameters
Initial size: 16384 K
Max size: 240000000 K
Current values
Heap size: 437952 K
Garbage collections: 58
Additional values
JIT heap size: 53824 K
JVM heap size: 55752 K
Last GC cycle time: 1333 ms
........................................................................
. Thread information .
........................................................................
Information for 4 thread(s) of 4 thread(s) processed
Thread: 00000004 Thread-0
TDE: B00380000BAA0000
Thread priority: 5
Thread status: Running
Thread group: main
Runnable: java/lang/Thread
Stack:
java/io/Os400FileSystem.list(Ljava/io/File;)[Ljava/lang/String;+0 (Os400FileSystem.java:0)
java/io/File.list()[Ljava/lang/String;+19 (File.java:922)
javax/crypto/b.e()[B+127 (:0)
javax/crypto/b.a(Ljava/security/cert/X509Certificate;)V+7 (:0)
javax/crypto/b.access$500(Ljava/security/cert/X509Certificate;)V+1 (:0)
javax/crypto/b$0.run()Ljava/lang/Object;+98 (:0)
javax/crypto/b.()V+507 (:0)
javax/crypto/Mac.getInstance(Ljava/lang/String;)Ljavax/crypto/Mac;+10 (:0)
Locks:
None
Thread: 00000007 jitcompilethread
TDE: B00380000BD58000
Thread priority: 5
Thread status: Java wait
Thread group: system
Runnable: java/lang/Thread
Stack:
None
Locks:
None
Thread: 00000005 Reference Handler
TDE: B00380000BAAC000
Thread priority: 10
Thread status: Waiting
Wait object: java/lang/ref/Reference$Lock
Thread group: system
Runnable: java/lang/ref/Reference$ReferenceHandler
Stack:
java/lang/Object.wait()V+1 (Object.java:452)
java/lang/ref/Reference$ReferenceHandler.run()V+47 (Reference.java:169)
Locks:
None
Thread: 00000006 Finalizer
TDE: B00380000BAB3000
Thread priority: 8
Thread status: Waiting
Wait object: java/lang/ref/ReferenceQueue$Lock
Thread group: system
Runnable: java/lang/ref/Finalizer$FinalizerThread
Stack:
java/lang/ref/ReferenceQueue.remove(J)Ljava/lang/ref/Reference;+43 (ReferenceQueue.java:111)
java/lang/ref/ReferenceQueue.remove()Ljava/lang/ref/Reference;+1 (ReferenceQueue.java:127)
java/lang/ref/Finalizer$FinalizerThread.run()V+3 (Finalizer.java:171)
Locks:
None
........................................................................
. Class loader information .
........................................................................
0 Default class loader
1 sun/reflect/DelegatingClassLoader
2 sun/misc/Launcher$ExtClassLoader
........................................................................
. GC heap information .
........................................................................
Loader Objects Class name
------ ------- ----------
0 1493 [C
0 2122181 java/lang/String
0 47 [Ljava/util/Hashtable$Entry;
0 68 [Ljava/lang/Object;
0 1016 java/lang/Class
0 31 java/util/HashMap
0 37 java/util/Hashtable
0 2 java/lang/ThreadGroup
0 2 java/lang/RuntimePermission
0 2 java/lang/ref/ReferenceQueue$Null
0 5 java/lang/ref/ReferenceQueue
0 50 java/util/Vector
0 4 java/util/Stack
0 3 sun/misc/SoftCache
0 1 [Ljava/lang/ThreadGroup;
0 5 [Ljava/io/ObjectStreamField;
0 1 sun/reflect/ReflectionFactory
0 7 java/lang/ref/ReferenceQueue$Lock
0 10 java/lang/Object
0 1 java/lang/String$CaseInsensitiveComparator
0 1 java/util/Hashtable$EmptyEnumerator
0 1 java/util/Hashtable$EmptyIterator
0 33 [Ljava/util/HashMap$Entry;
0 19210 [J
0 1 sun/nio/cs/StandardCharsets
0 5 java/util/TreeMap
0 1075 java/util/TreeMap$Entry
0 469 [Ljava/lang/String;
0 1 java/lang/StringBuffer
0 2 java/io/FileInputStream
0 2 java/io/FileOutputStream
0 2 java/io/BufferedOutputStream
0 1 java/lang/reflect/ReflectPermission
0 1 [[Ljava/lang/ref/SoftReference;
0 2 [Ljava/lang/ref/SoftReference;
0 2 sun/nio/cs/Surrogate$Parser
0 3 sun/misc/Signal
0 1 [Ljava/io/File;
0 6 java/io/File
0 1 java/util/BitSet
0 17 sun/reflect/NativeConstructorAccessorImpl
0 2 java/net/URLClassLoader$ClassFinder
0 12 java/util/ArrayList
0 32 java/io/RandomAccessFile
0 16 java/lang/Thread
0 1 java/lang/ref/Reference$ReferenceHandler
0 1 java/lang/ref/Finalizer$FinalizerThread
0 266 [B
0 2 java/util/Properties
0 71 java/lang/ref/Finalizer
0 2 com/ibm/nio/cs/DirectEncoder
0 38 java/lang/reflect/Constructor
0 33 java/util/jar/JarFile
0 19200 java/lang/StackOverflowError
0 5 java/security/AccessControlContext
0 2 [Ljava/lang/Thread;
0 4 java/lang/OutOfMemoryError
0 1065 java/util/Hashtable$Entry
0 1 java/io/BufferedInputStream
0 2 java/io/PrintStream
0 2 java/io/OutputStreamWriter
0 428 [I
0 3 java/lang/ClassLoader$NativeLibrary
0 25 java/util/Locale
0 3 sun/misc/URLClassPath
0 30 java/util/zip/Inflater
0 612 java/util/HashMap$Entry
0 2 java/io/FilePermission
0 10 java/io/ObjectStreamField
0 1 java/security/BasicPermissionCollection
0 2 java/security/ProtectionDomain
0 1 java/lang/Integer$1
0 1 java/lang/ref/Reference$Lock
0 1 java/lang/Shutdown$Lock
0 1 java/lang/Runtime
0 36 java/io/FileDescriptor
0 1 java/lang/Long$1
0 202 java/lang/Long
0 3 java/lang/ThreadLocal
0 3 java/nio/charset/CodingErrorAction
0 2 java/nio/charset/CoderResult
0 1 java/nio/charset/CoderResult$1
0 1 java/nio/charset/CoderResult$2
0 1 sun/misc/Unsafe
0 2 java/nio/ByteOrder
0 1 java/io/Os400FileSystem
0 3 java/lang/Boolean
0 1 java/lang/Terminator$1
0 23 java/lang/Integer
0 2 sun/misc/NativeSignalHandler
0 1 sun/misc/Launcher$Factory
0 1 sun/misc/Launcher
0 53 [Ljava/lang/Class;
0 1 java/lang/reflect/ReflectAccess
0 18 sun/reflect/DelegatingConstructorAccessorImpl
0 1 sun/net/www/protocol/file/Handler
0 3 java/util/HashSet
0 3 sun/net/www/protocol/jar/Handler
0 1 java/util/jar/JavaUtilJarAccessImpl
0 1 java/net/UnknownContentHandler
0 2 [Ljava/security/Principal;
0 10 [Ljava/security/cert/Certificate;
0 2 sun/misc/AtomicLongCSImpl
0 3 sun/reflect/DelegatingMethodAccessorImpl
0 1 sun/security/util/ByteArrayLexOrder
0 1 sun/security/util/ByteArrayTagOrder
0 7 sun/security/x509/CertificateVersion
0 7 sun/security/x509/CertificateSerialNumber
0 7 sun/security/x509/SerialNumber
0 7 sun/security/x509/CertificateAlgorithmId
0 7 sun/security/x509/CertificateIssuerName
0 60 sun/security/x509/RDN
0 60 [Lsun/security/x509/AVA;
0 67 sun/security/util/DerInputStream
0 3 [Ljava/math/BigInteger;
0 2 com/ibm/nio/cs/Converter
0 2 sun/nio/cs/StreamEncoder$CharsetSE
0 35 java/lang/ref/SoftReference
0 2 java/nio/HeapByteBuffer
0 2 java/io/BufferedWriter
0 33 sun/misc/URLClassPath$JarLoader
0 4 java/lang/ThreadLocal$ThreadLocalMap$Entry
0 76 java/net/URL
0 1 sun/misc/Launcher$ExtClassLoader
0 1 sun/misc/Launcher$AppClassLoader
0 4 java/lang/Throwable
0 7 java/lang/reflect/Method
0 2 sun/misc/URLClassPath$FileLoader
0 2 java/security/CodeSource
0 2 java/security/Permissions
0 2 java/io/FilePermissionCollection
0 1 java/lang/ThreadLocal$ThreadLocalMap
0 1 javax/crypto/spec/SecretKeySpec
0 17 java/util/jar/Attributes$Name
0 1 [Ljava/lang/ThreadLocal$ThreadLocalMap$Entry;
0 1 java/security/SecureRandom
0 2 sun/security/provider/Sun
0 1 java/util/jar/JarFile$JarFileEntry
0 1 java/util/jar/JarVerifier
0 3 sun/reflect/NativeMethodAccessorImpl
0 116 sun/security/util/ObjectIdentifier
0 1 java/lang/Package
0 2 [S
0 104 java/math/BigInteger
0 20 sun/security/x509/AlgorithmId
0 14 sun/security/x509/X500Name
0 14 [Lsun/security/x509/RDN;
0 60 sun/security/x509/AVA
0 67 sun/security/util/DerValue
0 67 sun/security/util/DerInputBuffer
0 21 sun/security/x509/AVAKeyword
0 6 sun/security/x509/X509CertImpl
0 7 sun/security/x509/X509CertInfo
0 1 [Lsun/security/util/ObjectIdentifier;
0 1 [[Ljava/lang/Byte;
0 3 [[B
0 7 sun/security/provider/DSAPublicKey
0 7 sun/security/x509/AuthorityKeyIdentifierExtension
0 12 [Ljava/lang/Byte;
0 14 java/lang/Byte
0 7 sun/security/x509/CertificateSubjectName
0 7 sun/security/x509/CertificateX509Key
0 14 sun/security/x509/KeyIdentifier
0 4 [Z
0 5 sun/text/Normalizer$Mode
0 7 sun/security/x509/CertificateValidity
0 14 java/util/Date
0 7 sun/security/provider/DSAParameters
0 7 sun/security/util/BitArray
0 7 sun/security/x509/CertificateExtensions
0 7 java/security/AlgorithmParameters
0 7 sun/security/x509/SubjectKeyIdentifierExtension
0 5 sun/security/x509/BasicConstraintsExtension
0 2 sun/security/x509/KeyUsageExtension
0 1 sun/text/CompactCharArray
0 1 sun/text/CompactByteArray
0 1 sun/net/www/protocol/jar/JarFileFactory
0 1 java/util/Collections$EmptySet
0 1 java/util/Collections$EmptyList
0 1 java/util/Collections$ReverseComparator
0 1 com/ibm/security/jgss/i18n/PropertyResource
0 1 javax/crypto/b$0
0 1 sun/security/provider/X509Factory
0 1 sun/reflect/BootstrapConstructorAccessorImpl
1 1 sun/reflect/GeneratedConstructorAccessor3202134454
2 1 com/ibm/crypto/provider/IBMJCE
0 6 java/util/ResourceBundle$LoaderReference
0 1 [Lsun/security/x509/NetscapeCertTypeExtension$MapEntry;
0 1 com/sun/rsajca/Provider
0 1 com/ibm/security/cert/IBMCertPath
0 1 com/ibm/as400/ibmonly/net/ssl/Provider
0 1 com/ibm/jsse/IBMJSSEProvider
0 1 com/ibm/security/jgss/IBMJGSSProvider
0 5 org/ietf/jgss/Oid
0 1 java/util/PropertyResourceBundle
0 7 java/util/ResourceBundle$ResourceCacheKey
0 2 sun/net/www/protocol/jar/URLJarFile
0 6 sun/misc/SoftCache$ValueCell
0 1 java/util/Random
0 1 java/util/Collections$EmptyMap
0 112 com/ibm/security/util/ObjectIdentifier
0 5 java/security/Security$ProviderProperty
0 1 java/security/cert/CertificateFactory
0 1 sun/security/provider/SecureRandom
0 2 java/security/MessageDigest$Delegate
0 2 sun/security/provider/SHA
0 1 sun/util/calendar/ZoneInfo
0 4 com/ibm/security/x509/X500Name
0 2 [Ljava/security/cert/X509Certificate;
0 1 sun/reflect/DelegatingClassLoader
0 1 sun/security/x509/NetscapeCertTypeExtension
0 7 sun/security/x509/NetscapeCertTypeExtension$MapEntry
0 3 [[Ljava/lang/String;
0 3 java/util/Arrays$ArrayList
0 7 com/ibm/security/x509/NetscapeCertTypeExtension$MapEntry
0 1 com/ibm/security/validator/EndEntityChecker
0 1 java/util/AbstractList$Itr
0 1 com/ibm/security/util/ByteArrayLexOrder
0 1 com/ibm/security/util/ByteArrayTagOrder
0 18 [Lcom/ibm/security/x509/AVA;
0 18 com/ibm/security/util/DerInputStream
0 5 com/ibm/security/util/text/Normalizer$Mode
0 1 com/ibm/security/validator/SimpleValidator
0 1 [Lcom/ibm/security/x509/NetscapeCertTypeExtension$MapEntry;
0 4 [Lcom/ibm/security/x509/RDN;
0 1 java/util/Hashtable$Enumerator
0 4 java/util/LinkedHashMap$Entry
0 1 sun/text/resources/LocaleElements
0 1 sun/text/resources/LocaleElements_en
0 22 com/ibm/security/x509/AVAKeyword
0 4 javax/security/auth/x500/X500Principal
0 18 com/ibm/security/x509/RDN
0 18 com/ibm/security/x509/AVA
0 18 com/ibm/security/util/DerInputBuffer
0 18 com/ibm/security/util/DerValue
0 1 com/ibm/security/util/text/CompactCharArray
0 1 com/ibm/security/util/text/CompactByteArray
0 2 java/util/LinkedHashMap
0 1 java/net/InetAddress$1
0 2 [Ljava/net/InetAddress;
0 2 java/net/InetAddress$Cache
0 1 java/net/Inet4AddressImpl
0 3 java/net/Inet4Address
0 2 java/net/InetAddress$CacheEntry
........................................................................
. Global registry information .
........................................................................
Loader Objects Class name
------ ------- ----------
0 23 [C
0 1017 java/lang/Class
0 1 java/lang/ref/Reference$ReferenceHandler
0 1 java/lang/ref/Finalizer$FinalizerThread
0 1 sun/misc/Launcher$AppClassLoader
0 32 java/io/RandomAccessFile
0 32 [B
有人可以告诉我吗？
非常感谢， 人员Prasanna
答案 0 :(得分：1)
问题似乎是
at java.io.Os400FileSystem.list(Native method)
at java.io.File.list(File.java:922)
Mac.getInstance（）代码需要读取由Os400FileSystem.list（）方法完成的文件夹（File.list）。显然该文件夹太大了。
您需要检查的第一件事是机器在PTF上是最新的。如果问题仍然存在，那么尝试给你的进程更多的内存（JAVA / RUNJVA命令的参数），看看你是否只有一点点内存。默认值从V5R3增加到V5R4。