我正在使用从这里下载的官方 XSD 架构：
http://docs.oasis-open.org/ubl/os-UBL-2.0.zip
（路径：xsd/maindoc/UBL-Order-2.0.xsd）
当我使用以下命令使用 XJC 生成 java 类时，我总是在控制台中收到一个错误，我不知道如何处理。
命令：
xjc -d C:\Users\Oscar\Desktop\results -p com.ubl.order C:\Users\Oscar\Desktop\os-UBL-2.0\xsd\maindoc\UBL-Order-2.0.xsd
错误：
parsing a schema...
[WARNING] Simple type "UnitCodeContentType" was not mapped to Enum due to EnumMemberSizeCap limit. Facets count: 1.093, current limit: 256. You can use customization attribute "typesafeEnumMaxMembers" to extend the limit.
line 38 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/CodeList_UnitCode_UNECE_7_04.xsd
[WARNING] Simple type "BinaryObjectMimeCodeContentType" was not mapped to Enum due to EnumMemberSizeCap limit. Facets count: 616, current limit: 256. You can use customization attribute "typesafeEnumMaxMembers" to extend the limit.
line 38 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/CodeList_MIMEMediaTypeCode_IANA_7_04.xsd
[WARNING] Simple type "LanguageCodeContentType" was not mapped to Enum due to EnumMemberSizeCap limit. Facets count: 276, current limit: 256. You can use customization attribute "typesafeEnumMaxMembers" to extend the limit.
line 38 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/CodeList_LanguageCode_ISO_7_04.xsd
compiling a schema...
[ERROR] A class/interface with the same name "com.ubl.order.LocationType" is already in use. Use a class customization to resolve this conflict.
line 9890 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonAggregateComponents-2.0.xsd
[ERROR] (Relevant to above error) another "LocationType" is generated from here.
line 1543 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.TextType" is already in use. Use a class customization to resolve this conflict.
line 2598 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "TextType" is generated from here.
line 1070 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UnqualifiedDataTypeSchemaModule-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.NameType" is already in use. Use a class customization to resolve this conflict.
line 1718 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "NameType" is generated from here.
line 1105 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UnqualifiedDataTypeSchemaModule-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.AmountType" is already in use. Use a class customization to resolve this conflict.
line 613 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "AmountType" is generated from here.
line 57 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UnqualifiedDataTypeSchemaModule-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.MeasureType" is already in use. Use a class customization to resolve this conflict.
line 1668 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "MeasureType" is generated from here.
line 930 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UnqualifiedDataTypeSchemaModule-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.QuantityType" is already in use. Use a class customization to resolve this conflict.
line 2143 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "QuantityType" is generated from here.
line 1035 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UnqualifiedDataTypeSchemaModule-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.ChannelCodeType" is already in use. Use a class customization to resolve this conflict.
line 763 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "ChannelCodeType" is generated from here.
line 119 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.DocumentStatusCodeType" is already in use. Use a class customization to resolve this conflict.
line 1103 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "DocumentStatusCodeType" is generated from here.
line 618 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.PackagingTypeCodeType" is already in use. Use a class customization to resolve this conflict.
line 1873 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "PackagingTypeCodeType" is generated from here.
line 1113 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.TransportModeCodeType" is already in use. Use a class customization to resolve this conflict.
line 2753 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "TransportModeCodeType" is generated from here.
line 1708 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.AllowanceChargeReasonCodeType" is already in use. Use a class customization to resolve this conflict.
line 603 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "AllowanceChargeReasonCodeType" is generated from here.
line 19 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.TransportEquipmentTypeCodeType" is already in use. Use a class customization to resolve this conflict.
line 2728 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "TransportEquipmentTypeCodeType" is generated from here.
line 1609 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.PaymentMeansCodeType" is already in use. Use a class customization to resolve this conflict.
line 1978 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "PaymentMeansCodeType" is generated from here.
line 1212 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.CurrencyCodeType" is already in use. Use a class customization to resolve this conflict.
line 913 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "CurrencyCodeType" is generated from here.
line 517 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.LongitudeDirectionCodeType" is already in use. Use a class customization to resolve this conflict.
line 1563 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "LongitudeDirectionCodeType" is generated from here.
line 915 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.SubstitutionStatusCodeType" is already in use. Use a class customization to resolve this conflict.
line 2478 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "SubstitutionStatusCodeType" is generated from here.
line 1411 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.LineStatusCodeType" is already in use. Use a class customization to resolve this conflict.
line 1528 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "LineStatusCodeType" is generated from here.
line 816 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] A class/interface with the same name "com.ubl.order.LatitudeDirectionCodeType" is already in use. Use a class customization to resolve this conflict.
line 1468 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Relevant to above error) another "LatitudeDirectionCodeType" is generated from here.
line 717 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 9890 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonAggregateComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 1543 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 2598 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 1070 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UnqualifiedDataTypeSchemaModule-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 1718 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 1105 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UnqualifiedDataTypeSchemaModule-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 613 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 57 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UnqualifiedDataTypeSchemaModule-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 1668 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 930 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UnqualifiedDataTypeSchemaModule-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 2143 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 1035 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UnqualifiedDataTypeSchemaModule-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 763 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 119 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 1103 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 618 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 1873 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 1113 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 2753 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 1708 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 603 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 19 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 2728 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 1609 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 1978 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 1212 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 913 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 517 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 1563 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 915 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 2478 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 1411 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 1528 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 816 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 1468 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 717 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-QualifiedDatatypes-2.0.xsd
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 166 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonAggregateComponents-2.0.xsd
[ERROR] (Related to above error) This is the other declaration.
line 230 of file:/C:/Users/Oscar/Desktop/os-UBL-2.0/xsd/common/UBL-CommonBasicComponents-2.0.xsd
Failed to produce code.
我尝试的是不使用官方 XSD 并使用 trang.jar 生成我自己的。结果很好，我得到了生成的 java 类，但是当我使用 JAXB（使用这些类）创建 XML 文档时，命名空间不正常。
所以，我想要的是使用官方的 XSD，但经过修改（也许）使其工作。
我该如何解决这个问题以获取我生成的类？
提前致谢。