使用Java JAX-WS返回字符串数组? [英] Using Java JAX-WS To Return a String Array?

问题描述

我试图创建一个简单的Web服务，该Web服务在被调用时应该返回一个String数组，但似乎没有这样做，而且我不知道为什么吗?

I have attempted to create a simple web service that when called is supposed to return a String array, yet it does not seem to do so and i cannot figure out why?

此Web服务如下:

@WebService
public String[] getData(String testParam)
{
    String[] testArray= null;

    ....//DOES SOMETHING TO TEST PARAM//.....

    testArray= longtestString.split("-");
    return testArray;
}

现在，我创建了一个尝试调用此函数并收到String数组的客户端，该客户端的代码为:

Now i create a client that attempts to call this function and recieve a String array back, the code for the client is:

myjaxpackage.GetDataService service = new myjaxpackage.GetDataService();
myjaxpackage.GetData port = service.getGetDataPort();
String testParameter= "this-is-a-test-string";
String[] result = port.getData(testParameter);  //Incompatible Types???

然而，ide(Netbeans)给我错误，指出它们是不兼容的类型:

Yet the ide (Netbeans) is giving me the error stating that they are incompatible types:

incompatible types
   required: java.lang.String[]
   found:    java.util.List<java.lang.String>

有人会知道为什么这段代码不正确吗?该函数应该返回一个字符串数组，并且该函数将被调用并送入一个数组中，所以我看不到它们怎么可能不兼容?

Would anyone know why this code is not correct, the function is supposed to return a string array and it is being called and fed into one so i dont see how they can be incompatible?

感谢您对此事的帮助.

推荐答案

此处使用的默认绑定是JAXB-序列的默认映射是List，因此在解组时，JAXB将响应的序列转换为列表与String []不兼容.您有两种解决方法:

The default binding used here is JAXB - the default mapping of a sequence is a List, so when unmarshalling, JAXB is transforming the sequence in response, to a list which is not compatible with String[]. You have two workarounds:

1. 要将签名更改为与JAXB兼容的某种东西，即List<String>

使用XMLJavaTypeAdapter表示要修改类型-在返回之前将列表转换为数组-请参见

Use XMLJavaTypeAdapter to indicate you would like the types to be adapted - to convert the List to Array before returning - see link to javadoc

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