XmlAdapter沒有在CXF中使用

Question

我有一個外部（即不可修改的）com.external.Money類，它有一個帶有getter和setter的java.util.Currency字段。在我的CXF JAXWS Web服務，我有類似下面的請求對象：

@XmlRootElement 
public ExampleRequest { 
    private Money money; 
    public Money getMoney() { return money; } 
    public void setMoney(Money money) { this.money = money; } 
} 

當我嘗試啓動服務，我得到以下錯誤：

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 

所以，我創建了一個MoneyAdapter，它將Money轉換成JAXB可用的東西，即TransportableMoney類，貨幣存儲爲String。理想情況下，我會創建一個CurrencyAdapter，但由於貨幣字段被外部類封裝，所以我無法將其掛鉤（或者我不知道如何）。

我試圖掛鉤的適配器與package-info.java：

@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; 

的問題是，這是行不通的。相反，上述錯誤的，我現在得到：

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 

我認爲這是發生，因爲com.external.Money有一個無參數的構造函數。當它沒有沒有參數的構造函數時，這個設置似乎工作。

我在這裏錯過了什麼嗎？有誰知道如何強制CXF使用XmlAdapter？

EDIT

作爲布萊斯Doughan指出的那樣，上面並僅使用JAXB編組工作配置。它只是不適用於CXF 2.6.0。這是我的主要方法：

SomeService ss = new SomeService(); 
JaxWsServerFactoryBean jwsfb = new JaxWsServerFactoryBean(); 
jwsfb.setServiceClass(SomeService.class); 
jwsfb.setServiceBean(ss); 
jwsfb.setAddress("http://localhost:9020/hello"); 
jwsfb.create(); 

Maven依賴：

 <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> 

SomeService：

@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 
    } 
} 

UPDATE

創建一個JIRA ticket，看起來像它已經被解決CXF團隊（哇）！

Answer 1

下面在CXF環境以外爲我工作。你可以將它與你正在做的事情進行比較。如果你在做什麼匹配，那麼你可能遇到了CXF問題。

錢

下面是根據您的問題的說明中的Money類的實現。

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

下面是根據你的問題的描述MoneyAdapter實現：

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

這是直接從你的問題你採取類package-info。

@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; 

ExampleRequest

這是從你的問題直接被你ExampleRequest類。

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

下面是一些示例代碼，在讀取XML對象和寫回了，證明一切正常。

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中/輸出

下面是示例輸入和輸出XML。

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> 
<exampleRequest> 
    <money> 
     <currency>USD</currency> 
    </money> 
</exampleRequest>