怎么样处理使用XMLBean时JVM异常问题？
在程序中有需要操作XML的地方，我个人比较喜欢使用XMLBean。为此，我的Eclipse项目列表里面长期都有一个XMLBean工程，用来随时生成Schema.jar(XMLBean)。不过今天我把我的经过本地测试的XMLBean部署到一个Server上的Weblogic后，当调用该XMLBean时，居然把jvm搞挂了...
Log:
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An unexpected exception has been detected in native code outside the VM. Unexpected Signal : EXCEPTION_ACCESS_VIOLATION (0xc0000005) occurred at PC=0x0 Function=[Unknown.] Library=(N/A)
NOTE: We are unable to locate the function name symbol for the error just occurred. Please refer to release documentation for possible reason and solutions.
Current Java thread: at java.lang.Class.getClassLoader0(Native Method) at java.lang.Class.getClassLoader(Class.java:516) at com.xx.xx.xx.xx.xx.ConfigitemsDocument.<clinit>(Unknown Source) //….此处省去若干行 Dynamic libraries: 0x00400000 - 0x0040B000 C:/bea/JDK142~1/bin/java.exe 0x7C930000 - 0x7CA00000 C:/WINDOWS/system32/ntdll.dll
0x7C800000 - 0x7C92B000 C:/WINDOWS/system32/kernel32.dll //….这里又省去若干行，全是关于dll的
Heap at VM Abort: Heap def new generation total 36352K, used 2274K [0x10010000, 0x12780000, 0x14ed0000)
from space 4032K, 0% used [0x12390000, 0x12390000, 0x12780000) to space 4032K, 0% used [0x11fa0000, 0x11fa0000, 0x12390000) tenured generation total 483968K, used 88225K [0x14ed0000, 0x32770000, 0x50010000) the space 483968K, 18% used [0x14ed0000, 0x1a4f8468, 0x1a4f8600, 0x32770000) compacting perm gen total 45312K, used 45258K [0x50010000, 0x52c50000, 0x60010000) the space 45312K, 99% used [0x50010000, 0x52c42a60, 0x52c42c00, 0x52c50000)
Local Time = Tue Jan 09 14:10:28 2007 Elapsed Time = 58 # # The exception above was detected in native code outside the VM # # Java VM: Java HotSpot(TM) Client VM (1.4.2_05-b04 mixed mode) # |
经推敲，发现可能是编译XMLBean时的jdk（我用的是jdk1.5）和我部署到的Weblogic版本不一的缘故。马上修改我的XMLBean工程的配置项:
1) 修改引用jdk的版本，改为和目标环境一致的。如图：
2) 修改生成XMLBean的ant脚本：
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<?xml version="1.0" encoding="UTF-8" ?> <project name="xmlbean" default="build_all_schemas" basedir="." > <taskdef name="xmlbean" classname="org.apache.xmlbeans.impl.tool.XMLBean" /> <target name="build_all_schemas" > <xmlbean schema="schemas" destfile="dist/SchemasWapCfg.jar" classgendir="build" srcgendir="src" javasource="1.4" /> </target> </project> |
注意：javasource="1.4"，和引用jdk版本一致。
重新编译，重新部署后测试。OK!
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