wsgen和App Engine

Question

我正在尝试执行wsgen命令来创建一个Web服务。我的命令行是：

PATH=%path%;C:\Program Files\Java\jdk1.6.0_24\bin
wsgen -cp ".\war\WEB-INF\classes" -wsdl -keep -r ".\war" -d ".\war\WEB-INF\classes" -             s ".\war" "com.example.prototipo21.Greeting"

并出现此错误:警告:无法在类型“javax.jdo.annotations.Persisten”中找到注释方法“valueStrategy()”：找不到javax.jdo.annotations.Persistent的类文件。错误:找不到com.example.prototipo21的类文件reported 1错误1警告错误:编译失败，应已报告错误

我认为问题可能是我将Datastore应用程序集成到Web服务应用程序中，因此我的类具有不同的注释。例如：

@WebService
public class Greeting {

@PrimaryKey
@Persistent (valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;

@Persistent
private User author;

..。

@WebMethod  
public Key getKey() {
    return key;
}
@WebMethod
public User getAuthor(){
    return author;

……

你懂我说的意思吗？?任何想法都会非常有用！谢谢!

这些是我的命令和整个跟踪：

c:\Users\...\Desktop\....\Eclipse\Prototipo_21>PATH=%pa
th%;C:\Program Files\Java\jdk1.7.0_03\bin

c:\Users\...\Desktop\....\Eclipse\Prototipo_21>wsgen -c
p ".\war\WEB-INF\classes" -wsdl -keep -r ".\war" -d ".\war\WEB-INF\classes" -s "
.\war" "com.example.prototipo21.Greeting"

warning: The apt tool and its associated API are planned to be
removed in the next major JDK release.  These features have been
superseded by javac and the standardized annotation processing API,
javax.annotation.processing and javax.lang.model.  Users are
recommended to migrate to the annotation processing features of
javac; see the javac man page for more information.
.\war\WEB-INF\classes\com\example\prototipo21\Greeting.class: warning: Cannot fi
nd annotation method 'valueStrategy()' in type 'Persistent': class file for java
x.jdo.annotations.Persistent not found
warning: unknown enum constant IdGeneratorStrategy.IDENTITY
reason: class file for javax.jdo.annotations.IdGeneratorStrategy not found
error: Could not create declaration for annotation type javax.jdo.annotations.Pr
imaryKey
error: Could not create declaration for annotation type javax.jdo.annotations.Pe
rsistent
Problem encountered during annotation processing;
see stacktrace below for more information.
com.sun.tools.internal.ws.processor.modeler.ModelerException: modeler error: Cla
sses annotated with @javax.jws.WebService must have a public default constructor
. Class: com.example.prototipo21.Greeting
    at com.sun.tools.internal.ws.processor.modeler.annotation.WebServiceAP.o
nError(WebServiceAP.java:229)
    at com.sun.tools.internal.ws.processor.modeler.annotation.WebServiceVisi
tor.isLegalImplementation(WebServiceVisitor.java:515)
    at com.sun.tools.internal.ws.processor.modeler.annotation.WebServiceVisi
tor.shouldProcessWebService(WebServiceVisitor.java:322)
    at com.sun.tools.internal.ws.processor.modeler.annotation.WebServiceVisi
tor.visitClassDeclaration(WebServiceVisitor.java:113)
    at com.sun.tools.apt.mirror.declaration.ClassDeclarationImpl.accept(Clas
sDeclarationImpl.java:113)
    at com.sun.tools.internal.ws.processor.modeler.annotation.WebServiceAP.b
uildModel(WebServiceAP.java:319)
    at com.sun.tools.internal.ws.processor.modeler.annotation.WebServiceAP.p
rocess(WebServiceAP.java:260)
    at com.sun.mirror.apt.AnnotationProcessors$CompositeAnnotationProcessor.
process(AnnotationProcessors.java:84)
    at com.sun.tools.apt.comp.Apt.main(Apt.java:480)
    at com.sun.tools.apt.main.AptJavaCompiler.compile(AptJavaCompiler.java:2
70)
    at com.sun.tools.apt.main.Main.compile(Main.java:1127)
    at com.sun.tools.apt.main.Main.compile(Main.java:989)
    at com.sun.tools.apt.Main.processing(Main.java:113)
    at com.sun.tools.apt.Main.process(Main.java:103)
    at com.sun.tools.apt.Main.process(Main.java:85)
    at com.sun.tools.internal.ws.wscompile.WsgenTool.buildModel(WsgenTool.ja
va:207)
    at com.sun.tools.internal.ws.wscompile.WsgenTool.run(WsgenTool.java:111)

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at com.sun.tools.internal.ws.Invoker.invoke(Invoker.java:120)
    at com.sun.tools.internal.ws.WsGen.main(WsGen.java:42)
error: compilation failed, errors should have been reported

Answer 1

该错误与您编写的代码没有任何问题。问题出在类路径上。如果检查错误，您可以清楚地看到：

找不到com.example.prototipo21.Greeting1的类文件

修复您的类路径，以便类对wsgen可用，并且您可能会领先一步，并在下一组错误中出错:)祝您好运

Answer 2

我也犯了同样的错误。出现此错误的原因是，您还必须为wsgen提供对GAE正在使用的库的引用。

只需修改类路径以包含其他jar文件。请注意，在Unix中，我们使用冒号":“来分隔目录，而在Windows中，我们使用分号";”。

(只需相应地更改目录路径)

class=com.sample.MyWebService
clpth='./war/WEB-INF/classes:/Applications/eclipse_jee/plugins/com.google.appengine.eclipse.sdkbundle_1.7.0/appengine-java-sdk-1.7.0/lib/opt/user/datanucleus/v2/jdo-api-3.1-SNAPSHOT-20110926.jar:/Applications/eclipse_jee/plugins/com.google.appengine.eclipse.sdkbundle_1.7.0/appengine-java-sdk-1.7.0/lib/user/appengine-api-1.0-sdk-1.7.0.jar'
resourcedir='./war'
outsourcedir='./src'
outdir='./war/WEB-INF/classes'
wsgen -cp "$clpth" -wsdl -keep -r "$resourcedir" -d "$outdir" -s "$outsourcedir"  $class