Question

我正在尝试执行wsgen命令来创建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"

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：无法找到com.example.prototipo21.Greeting的类文件 1错误 1警告错误：编译失败，应该报告错误

我认为问题可能是我在Web服务应用程序中集成了数据存储区应用程序，所以我的类有不同的注释。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;

...

你知道我的意思吗？任何想法都会非常有用!!谢谢！

这些是我的命令和整个痕迹：

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superseded by javac and the standardized annotation processing API,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

错误与您编写的代码没有任何问题。问题在于类路径。如果你检查错误，你可以清楚地看到：

无法找到com.example.prototipo21.Greeting1

的类文件

修复你的类路径，以便wsgen可以使用该类，你可能会领先一步并在下一组错误中绊倒:)祝你好运

Answer 2

我遇到了同样的错误。您收到此错误的原因是您必须为wsgen提供GAE正在使用的库的引用。

只需修改类路径即可包含其他jar文件。请注意，在Unix中我们使用冒号“：”来分隔目录，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

wsgen和App Engine

2 个答案: