How to generate JAVA classes from XSD hierarchy without namespace

问题

I have a set of XSD files from a client. I need to generate java classes from those. One of the XSDs imports another without namespace. That fails the mvn generate-sources with an error: src-resolve: Cannot resolve the name 'faultstring' to a(n) 'element declaration' component. org.xml.sax.SAXParseException; systemId: file:/src/main/resources/Common/SOAP_Fault_v4_0_0.xsd

I am using openjdk 11 with version 3.3.0 of cxf-xjc-plugin to generate classes. Attached is the project.

I have tried to generate the child XSD (SOAP_Fault_v4_0_0) separately and used bindings file to refer to the generated class from parent(Envelope). Doesnt work. I also tried to use a different plugin jaxb2-maven-plugin (v2.5.0) but it ends with the same error.

When I give a namespace to the child XSD SOAP_FaultElements_v4_0_0.xsd and refer in SOAP_Fault_v4_0_0.xsd using the prefix, it generates the classes fine but then it doesn't match with the client response. I cannot modify the client XSDs as that is out of my scope. However if a modification doesn't alter the namespaces and structure, I can give it a try.

Below are the XSDs for reference:

    <?xml version="1.0" encoding="UTF-8"?>
        <xs:schema xmlns:env="http://schemas.xmlsoap.org/soap/envelope/"
                   xmlns:xs="http://www.w3.org/2001/XMLSchema"
                   targetNamespace="http://schemas.xmlsoap.org/soap/envelope/"
                   elementFormDefault="qualified" attributeFormDefault="unqualified">
            <xs:include schemaLocation="Common/SOAP_Fault_v4_0_0.xsd"/>
            <xs:element name="Envelope">
                <xs:complexType>
                    <xs:sequence>
                        <xs:element name="Body">
                            <xs:complexType>
                                <xs:choice>
                                    <xs:element name="request">
                                        <xs:simpleType>
                                            <xs:restriction base="xs:string">
                                                <xs:maxLength value="36"/>
                                            </xs:restriction>
                                        </xs:simpleType>
                                    </xs:element>
                                    <xs:element ref="env:Fault"/>
                                </xs:choice>
                            </xs:complexType>
                        </xs:element>
                    </xs:sequence>
                </xs:complexType>
            </xs:element>
        </xs:schema>

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:env="http://schemas.xmlsoap.org/soap/envelope/"
           xmlns:xs="http://www.w3.org/2001/XMLSchema"
           targetNamespace="http://schemas.xmlsoap.org/soap/envelope/"
           elementFormDefault="qualified" attributeFormDefault="unqualified" version="4.0.0">
    <xs:import schemaLocation="SOAP_FaultElements_v4_0_0.xsd"/>
    <xs:element name="Fault">
        <xs:complexType>
            <xs:sequence>
                <xs:element ref="faultstring"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
</xs:schema>

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
           elementFormDefault="qualified" attributeFormDefault="unqualified" version="4.0.0">
    <xs:element name="faultstring">
        <xs:simpleType>
            <xs:restriction base="xs:string">
                <xs:maxLength value="255"/>
            </xs:restriction>
        </xs:simpleType>
    </xs:element>
</xs:schema>

Looking for suggestions to resolve the issue.

来源：https://stackoverflow.com/questions/61372697/how-to-generate-java-classes-from-xsd-hierarchy-without-namespace

标签

java-11

jaxb2-maven-plugin

cxf-xjc-plugin