我正在使用一个基于 IDL 定义生成代码的库。能够在各种语言(Java、C 和 C++)中使用通用枚举非常棒,但是这些生成的枚举似乎不能很好地与 JAX-WS 配合使用。
基本上,主枚举“超级”类有两个成员:序数和名称。它看起来与此类似(注意:这是在第三方库中,对 JavaBean 不友好):
public class CustomEnum {
int _ordinal;
String _name;
public CustomEnum(int ordinal, String name) {
this._ordinal = ordinal;
this._name = name;
}
public int ordinal() {
return _ordinal;
}
public String name() {
return _name;
}
}
因此,在基于 IDL 定义生成的代码中看起来与此类似(以 Day 为例——但实际上我有大约 50 个扩展 CustomEnum 的“枚举”,所以我想要一个解决方案,让我避免拥有多个枚举的副本,例如 IDL 生成的类型和 java.lang.enum):
public class Day extends CustomEnum {
public static final Day Sunday = new Day(0, "Sunday");
public static final Day Monday = new Day(1, "Monday");
public static final Day Tuesday = new Day(2, "Tuesday");
public static final Day Wednesday = new Day(3, "Wednesday");
public static final Day Thursday = new Day(4, "Thursday");
public static final Day Friday = new Day(5, "Friday");
public static final Day Saturday = new Day(6, "Saturday");
public Day(int ordinal, String name) {
super(ordinal, name);
}
}
请注意,我也不想弄乱/重新排列/注释这个类,因为它是生成的代码。
所以,现在我想做的是能够在 JAX-WS @WebMethod 中使用这个“Day”枚举作为 @WebParam。这是我想要做的一个非常简单的例子:
import javax.jws.WebMethod;
import javax.jws.WebService;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
@WebService
public class EnumEndpoint {
@WebMethod
public boolean callEndpoint(
@XmlJavaTypeAdapter(CustomEnumAdapter.class) Day day) {
System.out.println(day.ordinal() + " " + day.name());
return false;
}
}
我希望像这样编写一个 XmlJavaTypeAdapter:
import java.lang.reflect.Type;
import javax.xml.bind.annotation.adapters.XmlAdapter;
public class CustomEnumAdapter extends XmlAdapter<CustomEnum, EnumBean>
implements Type {
@Override
public EnumBean unmarshal(CustomEnum v) throws Exception {
EnumBean mine = new EnumBean(v.ordinal(), v.name());
return mine;
}
@Override
public CustomEnum marshal(EnumBean v) throws Exception {
CustomEnum customEnum = new CustomEnum(v.getOrdinal(),v.getName());
return customEnum;
}
}
EnumBean 看起来像:
public class EnumBean {
int ordinal;
String name;
public EnumBean(int ordinal, String name) {
this.ordinal = ordinal;
this.name = name;
}
public int getOrdinal() {
return ordinal;
}
public void setOrdinal(int ordinal) {
this.ordinal = ordinal;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
但是当我像这样声明一个服务器端点时:
import javax.xml.ws.Endpoint;
public class Server {
/**
* @param args
*/
public static void main(String[] args) {
Endpoint.publish("http://0.0.0.0:7979/enum", new EnumEndpoint());
}
}
我收到此错误:
Jun 10, 2012 3:29:21 PM com.sun.xml.internal.ws.model.RuntimeModeler getRequestWrapperClass
INFO: Dynamically creating request wrapper Class test.jaxws.CallEndpoint
Exception in thread "main" javax.xml.ws.WebServiceException: java.lang.IllegalArgumentException: value class test.CustomEnumAdapter
at com.sun.xml.internal.ws.model.WrapperBeanGenerator.createRequestWrapperBean(WrapperBeanGenerator.java:249)
at com.sun.xml.internal.ws.model.RuntimeModeler.getRequestWrapperClass(RuntimeModeler.java:280)
at com.sun.xml.internal.ws.model.RuntimeModeler.processDocWrappedMethod(RuntimeModeler.java:674)
at com.sun.xml.internal.ws.model.RuntimeModeler.processMethod(RuntimeModeler.java:612)
at com.sun.xml.internal.ws.model.RuntimeModeler.processClass(RuntimeModeler.java:401)
at com.sun.xml.internal.ws.model.RuntimeModeler.buildRuntimeModel(RuntimeModeler.java:240)
at com.sun.xml.internal.ws.server.EndpointFactory.createSEIModel(EndpointFactory.java:312)
at com.sun.xml.internal.ws.server.EndpointFactory.createEndpoint(EndpointFactory.java:178)
at com.sun.xml.internal.ws.api.server.WSEndpoint.create(WSEndpoint.java:456)
at com.sun.xml.internal.ws.api.server.WSEndpoint.create(WSEndpoint.java:475)
at com.sun.xml.internal.ws.transport.http.server.EndpointImpl.createEndpoint(EndpointImpl.java:213)
at com.sun.xml.internal.ws.transport.http.server.EndpointImpl.publish(EndpointImpl.java:143)
at com.sun.xml.internal.ws.spi.ProviderImpl.createAndPublishEndpoint(ProviderImpl.java:102)
at javax.xml.ws.Endpoint.publish(Endpoint.java:170)
at test.Server.main(Server.java:11)
Caused by: java.lang.IllegalArgumentException: value class test.CustomEnumAdapter
at com.sun.xml.internal.ws.org.objectweb.asm.ClassWriter.newConstItem(ClassWriter.java:893)
at com.sun.xml.internal.ws.org.objectweb.asm.AnnotationWriter.visit(AnnotationWriter.java:185)
at com.sun.xml.internal.ws.model.WrapperBeanGenerator.createBeanImage(WrapperBeanGenerator.java:111)
at com.sun.xml.internal.ws.model.WrapperBeanGenerator.createRequestWrapperBean(WrapperBeanGenerator.java:245)
... 14 more
我在这里想念什么?我尝试直接使用“Day”,但由于它没有默认构造函数并且对获取/设置不友好,因此也不起作用。有小费吗?