我有一个外部(即不可修改的)com.external.Money
类,它有一个带有 getter 和 setter 的 java.util.Currency
字段。在我的 CXF jaxws 网络服务中,我有一个如下所示的请求对象:
@XmlRootElement
public ExampleRequest {
private Money money;
public Money getMoney() { return money; }
public void setMoney(Money money) { this.money = money; }
}
当我尝试启动该服务时,出现以下错误:
Exception in thread "main" com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1 counts of IllegalAnnotationExceptions
java.util.Currency does not have a no-arg default constructor.
this problem is related to the following location:
at java.util.Currency
at public java.util.Currency com.external.Money.getCurrency()
at com.external.Money
at public com.external.Money com.internal.ExampleRequest.getMoney()
at com.internal.ExampleRequest
因此,我创建了一个 MoneyAdapter
,它将 Money
转换为 JAXB 可用的东西,即 TransportableMoney
类,其中货币存储为字符串
。理想情况下,我会创建一个 CurrencyAdapter
,但由于货币字段由外部类封装,我无法将其连接起来(或者我不知道如何连接)。
我正在尝试使用 package-info.java
连接适配器:
@XmlJavaTypeAdapters({
@XmlJavaTypeAdapter(value=MoneyAdapter.class, type=Money.class)
})
package com.internal;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapters;
import com.external.Money;
问题是,这行不通。而不是上面的错误,我现在得到:
Caused by: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1 counts of IllegalAnnotationExceptions
java.util.Currency does not have a no-arg default constructor.
this problem is related to the following location:
at java.util.Currency
at public java.util.Currency com.external.Money.getCurrency()
at com.external.Money
我认为这是因为 com.external.Money
有一个无参数的构造函数。当它没有无参数构造函数时,此设置似乎有效。
我是不是漏掉了什么?有谁知道如何强制 CXF 使用 XmlAdapter
?
编辑
正如 Blaise Doughan 所指出的,上面的配置仅使用 JAXB 编码器就可以工作。它只是不适用于 CXF 2.6.0。这是我的主要方法:
SomeService ss = new SomeService();
JaxWsServerFactoryBean jwsfb = new JaxWsServerFactoryBean();
jwsfb.setServiceClass(SomeService.class);
jwsfb.setServiceBean(ss);
jwsfb.setAddress("http://localhost:9020/hello");
jwsfb.create();
maven 依赖项:
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-frontend-jaxws</artifactId>
<version>2.6.0</version>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-transports-http</artifactId>
<version>2.6.0</version>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-transports-http-jetty</artifactId>
<version>2.6.0</version>
<scope>runtime</scope>
</dependency>
一些服务:
@WebService
@SOAPBinding(use = SOAPBinding.Use.LITERAL, style = SOAPBinding.Style.DOCUMENT)
public class SomeService {
public ExampleRequest getRequest() {
ExampleRequest request = new ExampleRequest();
request.setMoney(new Money(Currency.getInstance("USD"), BigDecimal.ONE));
return request;
}
public void setRequest(ExampleRequest req) {
// do nothing
}
}
更新
创建了一个 JIRA ticket看起来它已经被 CXF 团队解决了(哇)!
最佳答案
以下内容在 CXF 环境之外对我有用。您可以将此与您正在做的事情进行比较。如果您所做的匹配,那么您可能遇到了 CXF 问题。
金钱
下面是根据您的问题描述实现的 Money
类。
I have an external (i.e. unmodifiable) com.external.Money class that has a java.util.Currency field with getters and setters.
package com.external;
import java.util.Currency;
public class Money {
private Currency currency;
public Currency getCurrency() {
return currency;
}
public void setCurrency(Currency currency) {
this.currency = currency;
}
}
MoneyAdapter
下面是根据您问题中的描述实现的 MoneyAdapter
:
So, I created a MoneyAdapter, which converts the Money into something usable by JAXB, namely a TransportableMoney class with currency stored as a String
package com.internal;
import java.util.Currency;
import javax.xml.bind.annotation.adapters.XmlAdapter;
import com.external.Money;
public class MoneyAdapter extends XmlAdapter<TransportableMoney, Money> {
@Override
public Money unmarshal(TransportableMoney v) throws Exception {
Money money = new Money();
Currency currency = Currency.getInstance(v.currency);
money.setCurrency(currency);
return money;
}
@Override
public TransportableMoney marshal(Money v) throws Exception {
TransportableMoney transportableMoney = new TransportableMoney();
transportableMoney.currency = v.getCurrency().getCurrencyCode();
return transportableMoney;
}
}
TransportableMoney
package com.internal;
public class TransportableMoney {
public String currency;
}
包信息
这是您的 package-info
类,直接取自您的问题。
@XmlJavaTypeAdapters({
@XmlJavaTypeAdapter(value=MoneyAdapter.class, type=Money.class)
})
package com.internal;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapters;
import com.external.Money;
示例请求
这是您的 ExampleRequest
类,直接取自您的问题。
package com.internal;
import javax.xml.bind.annotation.XmlRootElement;
import com.external.Money;
@XmlRootElement
public class ExampleRequest {
private Money money;
public Money getMoney() { return money; }
public void setMoney(Money money) { this.money = money; }
}
演示
下面是一些示例代码,将 XML 读入对象并将其写回以证明一切正常。
package com.internal;
import java.io.File;
import javax.xml.bind.*;
public class Demo {
public static void main(String[] args) throws Exception {
JAXBContext jc = JAXBContext.newInstance(ExampleRequest.class);
File xml = new File("src/com/internal/input.xml");
Unmarshaller unmarshaller = jc.createUnmarshaller();
ExampleRequest er = (ExampleRequest) unmarshaller.unmarshal(xml);
Marshaller marshaller = jc.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(er, System.out);
}
}
input.xml/输出
这是示例输入和输出 XML。
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<exampleRequest>
<money>
<currency>USD</currency>
</money>
</exampleRequest>
关于java - CXF 中未使用 XmlAdapter,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/12684103/