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通过 cxf-java2ws-plugin 和 cxf-codegen-plugin 通过 Maven 使用 CXF 2.7.11,从 Web 服务类生成 WSDL,然后生成 WSDL 代理类,然后在各种客户端中使用以连接到实际的实时服务器。

这些生成的服务代理存在问题,因为它们在传递空数组时会导致 NullPointerException。

Web 服务是这样的:

public class MyService {
    public SomeResult someMethod(String param, String[] otherParams) {
      if (otherParams == null){
        ... etc etc...
      }
    }
}

生成的 WSDL 片段:

<xs:complexType name="someMethod">
    <xs:sequence>
        <xs:element minOccurs="0" name="param1" type="xs:string"/>
        <xs:element maxOccurs="unbounded" minOccurs="0" name="otherParams" type="xs:string"/>
    </xs:sequence>
</xs:complexType>

最后是生成的服务代理片段:

public class SomeMethod
{

    protected String param1;
    protected String[] otherParams;

    ...

    public String[] getOtherParams()
    {
        // Good, defensive code used here
        if (this.otherParams == null)
        {
            return new String[0];
        }
        String[] retVal = new String[this.otherParams.length];
        System.arraycopy(this.otherParams, 0, retVal, 0, this.otherParams.length);
        return (retVal);
    }

    ...

    public void setOtherParams(String[] values)
    {
        // Complete lack of defensive code here!
        int len = values.length;
        this.otherParams = ((String[]) new String[len]);
        for (int i = 0; (i < len); i++)
        {
            this.otherParams[i] = values[i];
        }
    }

    public String setOtherParams(int idx,
            String value)
    {
        // And here
        return this.otherParams[idx] = value;
    }
}

用于 WSDL 生成的 pom.xml 片段:

<plugin>
    <groupId>org.apache.cxf</groupId>
    <artifactId>cxf-java2ws-plugin</artifactId>
    <version>2.7.11</version>
    <executions>
        <execution>
        <id>generate-wsdl-MyService</id>
        <phase>process-classes</phase>
        <goals>
            <goal>java2ws</goal>
        </goals>
        <configuration>
            <className>com.somewhere.services.MyService</className>
            <serviceName>MyService</serviceName>
            <genWsdl>true</genWsdl>
        </configuration>
        </execution>
    </executions>
<plugin>

从上面的 WSDL 生成代理的 pom.xml 片段:

<plugin>
    <groupId>org.apache.cxf</groupId>
    <artifactId>cxf-codegen-plugin</artifactId>
    <version>2.7.11</version>
    <executions>
        <execution>
            <id>generate-service-proxies</id>
            <phase>generate-sources</phase>
            <goals>
                <goal>wsdl2java</goal>
            </goals>
            <configuration>
                <defaultOptions>
                    <bindingFiles>
                        <bindingFile>some/location/jaxws-binding.xjb</bindingFile>
                        <bindingFile>some/location/jaxb-binding.xjb</bindingFile>
                    </bindingFiles>
                    <extraargs>
                        <extraarg>-fe</extraarg>
                        <extraarg>jaxws21</extraarg>
                        <extraarg>-xjc-npa</extraarg>
                    </extraargs>
                </defaultOptions>
                <wsdlOptions>
                    <wsdlOption>
                        <wsdl>some/location/generated/wsdl/MyService.wsdl</wsdl>
                    </wsdlOption>
                </wsdlOptions>
            </configuration>
        </execution>
    </executions>
</plugin>

如何让 CXF 生成服务代理来处理希望传递空数组的客户?(不是空数组或包含空值的数组,而是实际的空数组)。我需要在 WSDL 中声明为“nillable=true”的“otherParams”吗?如果是这样,怎么做?

我尝试了许多注释和 JAXB/JAXWS 选项,但似乎无法获得所需的行为。

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