EDI报文及相对的java对象

EDI（Electronic Data Interchange）报文是一种基于ASCII字符集的电子数据交换标准格式。在Java中，我们可以使用EDI解析器库来处理EDI报文。常见的EDI解析器库包括Smooks和jPOS。

在解析EDI报文时，我们可以将其转换成Java对象来方便地进行后续处理。这里给出一个示例：

假设我们有以下EDI报文：

ISA*00*          *00*          *12*3456789012     *08*9876543210     *200101*1200*U*00401*000000001*0*T*:~
GS*PO*4405197800*9876543210*20010101*1319*1*X*004010~
ST*850*0001~
BEG*00*SA*08292233294**20010101~
N1*BY*ABC COMPANY~
N1*SE*DEF COMPANY~
PO1*1*10*EA*19.95*UK*1234567890*VP*ABC123~
CTT*1~
SE*7*0001~
GE*1*1~
IEA*1*000000001~

我们可以定义以下Java对象来表示这些数据：

public class EDI {

    private ISA isa;
    private GS gs;
    private List<ST> sts;

    // getters and setters
}

public class ISA {

    private String authorizationInformationQualifier;
    private String authorizationInformation;
    private String securityInformationQualifier;
    private String securityInformation;
    private String senderIDQualifier;
    private String senderID;
    private String receiverIDQualifier;
    private String receiverID;
    private String date;
    private String time;
    private String interchangeControlStandardsIdentifier;
    private String interchangeControlVersionNumber;
    private String interchangeControlNumber;
    private String acknowledgementRequested;
    private String usageIndicator;
    private String componentElementSeparator;

    // getters and setters
}

public class GS {

    private String functionalIdentifierCode;
    private String senderID;
    private String receiverID;
    private String date;
    private String time;
    private String groupControlNumber;
    private String transactionTypeCode;
    private String versionNumber;

    // getters and setters
}

public class ST {

    private String transactionSetIdentifierCode;
    private String transactionSetControlNumber;
    private String implementationConventionReference;

    // getters and setters
}

public class BEG {

    private String transactionSetPurposeCode;
    private String purchaseOrderTypeCode;
    private String purchaseOrderNumber;
    private String releaseNumber;
    private String date;
    private String contractNumber;

    // getters and setters
}

public class N1 {

    private String entityIdentifierCode;
    private String name;

    // getters and setters
}

public class PO1 {

    private String lineNumber;
    private String quantityOrdered;
    private String unitOfMeasure;
    private String unitPrice;
    private String basisOfUnitPrice;
    private String productIDQualifier;
    private String productID;
    private String vendorPartNumber;

    // getters and setters
}

public class CTT {

    private String numberOfLineItems;

    // getters and setters
}

然后我们可以使用Smooks或jPOS等EDI解析器库将EDI报文解析成这些Java对象。