蚂蚁loadproperties失败(BCEL错误?) [英] Ant loadproperties failed (bcel error?)
问题描述
我工作的一个简单的构建脚本应该从一个Java类文件获取一些常量,并将它们作为我的文件名中的版本号。我使用Eclipse和自己的蚂蚁,但放的 BCEL-5.2.jar 的在我的libs文件夹和到类路径的蚂蚁电话。
<目标名称=generate_version依赖=编译>
&所述; loadproperties SRCFILE =$ {dir.dest} /MyVersion.class>
<&类路径GT;
<文件集DIR =$ {} dir.libs>
<包括姓名=** / BCEL的* .jar/>
< /文件集>
< /类路径>< filterchain>
< classconstants />
< / filterchain>
< / loadproperties>
< /目标与GT;
但不幸的是Ant任务的 loadproperties 的失败:
的build.xml:46:预期Java资源源
之后,我试图从外面的Eclipse运行Ant,使用此命令行:
设置ANT_HOME = C:\\ Program Files文件\\的Java \\蚂蚁\\ Apache的ANT-1.7.1
%ANT_HOME%\\ BIN \\ ant.bat
的结果是
构建文件:build.xml文件在里面:
[回应]大厦项目。
[回应] ant.home:C:\\ Program Files文件\\的Java \\蚂蚁\\ Apache的ANT-1.7.1
[回应] ant.java.version:1.6
[回应] ant.version:Apache Ant的1.7.1版本于2008年6月27日编译编译:
[javac的] 262编译源文件********** \\构建
[javac的]注:某些输入文件使用或覆盖脱precated API。
[javac的]注:重新编译-Xlint:详情德precation。
[javac的]注:某些输入文件使用未经检查或不安全的操作。
[javac的]注:重新编译-Xlint:未选中的详细信息。generate_version:构建失败
******************** \\蚂蚁\\的build.xml:46:预期Java资源源
我真的现在丢失。它是一个BCEL错误?它是一个Ant不兼容性我自己BCEL?
最后一个提示:删除从Ant目标结果BCEL类路径条目在此:
构建文件:build.xml文件在里面:
[回应]大厦项目。
[回应] ant.home:C:\\ Program Files文件\\的Java \\蚂蚁\\ Apache的ANT-1.7.1
[回应] ant.java.version:1.6
[回应] ant.version:Apache Ant的1.7.1版本于2008年6月27日编译编译:
[javac的] 262编译源文件******************** \\构建
[javac的]注:某些输入文件使用或覆盖脱precated API。
[javac的]注:重新编译-Xlint:详情德precation。
[javac的]注:某些输入文件使用未经检查或不安全的操作。
[javac的]注:重新编译-Xlint:未选中的详细信息。generate_version:构建失败
java.lang.NoClassDefFoundError的:组织/阿帕奇/ BCEL /类文件/ ClassParser
在org.apache.tools.ant.filters.util.JavaClassHelper.getConstants(JavaClassHelper.java:47)
在sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法)
在sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
在sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
更新在Eclipse中设置的Ant preferences后,错误信息更改:
构建失败
********************* \\的build.xml:46:org.apache.bcel.classfile.ClassFormatException:不是Java的.class文件
在org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:115)
在org.apache.tools.ant.Task.perform(Task.java:348)
在org.apache.tools.ant.Target.execute(Target.java:357)
在org.apache.tools.ant.Target.performTasks(Target.java:385)
在org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
在org.apache.tools.ant.Project.executeTarget(Project.java:1298)
在org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
在org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
在org.apache.tools.ant.Project.executeTargets(Project.java:1181)
在org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
在org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)
现在我认为这是可能的Ant和BCEL的版本冲突。或BCEL和JDK1.6。或者Eclipse和BCEL和蚂蚁或JDK ...我迷路了。
答:
这是发现低于
评论
我应该提到这一点 - 你不需要任何东西转换。文档:因为蚂蚁
1.7编码ISO 8859-1的字符被用来从字符转换回
字节,因此,人们必须使用此编码读取Java类文件。这仅仅是一个
公约避开一个字符过滤器正在对原始字节使用的事实。
ant.apache.org/manual/CoreTypes/...使用UTF-8将是坏! - 麦克道尔
块引用>解决方案废话,我就知道!归结到一点,文件编码的问题。这些文件仍处于ISO-8819-1,但我使用UTF-8。该项目是老年pretty,并与到位错误编码创建。设置参数的编码的在的javac 的和的 loadproperties 的任务修复它。
<目标名称=generate_version依赖=编译>
< loadproperties编码=ISO-8859-1SRCFILE =$ {} dir.dest /MyVersion.class>
< filterchain>
< classconstants />
< / filterchain>
< / loadproperties>
< /目标与GT;我以为它得到了我们的Subversion服务器变了,但我想我必须每一个文件转换为UTF-8现在我...以为是这么一个问题。
I'm working on a simple build script that should get some constants from a java class file and use them as the version numbers in my file names. I use Eclipse and its own Ant, but put bcel-5.2.jar in my libs folder and into the classpath for the Ant call.
<target name="generate_version" depends="compile"> <loadproperties srcfile="${dir.dest}/MyVersion.class"> <classpath> <fileset dir="${dir.libs}"> <include name="**/bcel*.jar"/> </fileset> </classpath> <filterchain> <classconstants/> </filterchain> </loadproperties> </target>
But unfortunatly the ant task loadproperties fails:
build.xml:46: expected a java resource as source
After that I tried to run Ant from outside Eclipse, using this command line:
set ANT_HOME=C:\Program Files\Java\ant\apache-ant-1.7.1 "%ANT_HOME%\bin\ant.bat"
The result is
Buildfile: build.xml init: [echo] Building project. [echo] ant.home: C:\Program Files\Java\ant\apache-ant-1.7.1 [echo] ant.java.version: 1.6 [echo] ant.version: Apache Ant version 1.7.1 compiled on June 27 2008 compile: [javac] Compiling 262 source files to **********\build [javac] Note: Some input files use or override a deprecated API. [javac] Note: Recompile with -Xlint:deprecation for details. [javac] Note: Some input files use unchecked or unsafe operations. [javac] Note: Recompile with -Xlint:unchecked for details. generate_version: BUILD FAILED ********************\ant\build.xml:46: expected a java resource as source
I'm really lost now. Is it a bcel error? Is it an Ant incompatibility with my own bcel?
One last hint: Removing the bcel classpath entry from the Ant target results in this:
Buildfile: build.xml init: [echo] Building project. [echo] ant.home: C:\Program Files\Java\ant\apache-ant-1.7.1 [echo] ant.java.version: 1.6 [echo] ant.version: Apache Ant version 1.7.1 compiled on June 27 2008 compile: [javac] Compiling 262 source files to ********************\build [javac] Note: Some input files use or override a deprecated API. [javac] Note: Recompile with -Xlint:deprecation for details. [javac] Note: Some input files use unchecked or unsafe operations. [javac] Note: Recompile with -Xlint:unchecked for details. generate_version: BUILD FAILED java.lang.NoClassDefFoundError: org/apache/bcel/classfile/ClassParser at org.apache.tools.ant.filters.util.JavaClassHelper.getConstants(JavaClassHelper.java:47) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
UPDATE After setting the Ant preferences in Eclipse, the error message changed:
BUILD FAILED *********************\build.xml:46: org.apache.bcel.classfile.ClassFormatException: is not a Java .class file at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:115) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:357) at org.apache.tools.ant.Target.performTasks(Target.java:385) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329) at org.apache.tools.ant.Project.executeTarget(Project.java:1298) at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32) at org.apache.tools.ant.Project.executeTargets(Project.java:1181) at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423) at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)
Now I think it's maybe a version conflict between Ant and BCEL. Or BCEL and JDK1.6. Or Eclipse and BCEL and Ant or JDK... I'm lost.
ANSWER:
This is the comment found below
I should have mentioned this - you do not need to convert anything. Doc: "since Ant 1.7, the character encoding ISO-8859-1 is used to convert from characters back to bytes, so ONE HAS TO USE THIS ENCODING for reading the java class file." This is just a convention to get round the fact that a character filter is being used on raw bytes. ant.apache.org/manual/CoreTypes/… Using UTF-8 would be bad! – McDowell
解决方案Crap, I knew it! It comes down to file encoding issues. The files are still in ISO-8819-1, but I'm using UTF-8. The project is pretty aged and was created with the wrong encoding in place. Setting the parameter encoding in the javac and loadproperties Task fixes it.
<target name="generate_version" depends="compile"> <loadproperties encoding="iso-8859-1" srcfile="${dir.dest}/MyVersion.class"> <filterchain> <classconstants/> </filterchain> </loadproperties> </target>
I thought it got changed by our Subversion server, but I think I have to convert every single file to UTF-8 myself now... think that is another question for SO.
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