我有一个要求，我需要在私有数据字段127中设置一些子元素，特别是子字段22和33.我不确定如何实际设置字段127的数据，因为它需要包含指定哪些子字段的位图填充（在这种情况下只有子字段22和33）。我查看了文档，但没有提到设置子字段。谁能指导我如何做到这一点？
答案 0 :(得分：1)
一旦引用了ISOMsg的实例，就可以调用：
m.set ("127.22", "XXX");
m.set ("127.33", "YYY");
和
m.getString("127.22");
m.getString("127.33");
以访问这些字段。
对于子字段配置，如果您使用的是GenericPackager，请查看https://github.com/jpos/jPOS/blob/master/jpos/src/dist/cfg/packager/postpack.xml#L649-L790
答案 1 :(得分：1)
您确定需要辅助字段的位图吗？你通常采用这种方式的方法是使用TLV（标签长度值元素）。
你这样做的方法是将DE 127作为IFA_LLLCHAR，其内容类似于：03202201012345678900330100987654321。
这相当于：032（DE127总长度）022（标签22）010（标签22的长度）1234567890（tag22的值）033（标签33）010（标签33的长度）0987654321（标签33的值） ）。
答案 2 :(得分：0)
我也面临着同样的挑战。我正在使用jpos，并且尝试设置字段127子元素033以及对其进行解压缩。我的代码如下：
打包程序：
import org.jpos.iso.ISOException;
import org.jpos.iso.ISOMsg;
import org.jpos.iso.packager.GenericPackager;
import java.io.InputStream;
import java.text.SimpleDateFormat;
public class PackerTest {
public static void main(String[] args) throws ISOException {
InputStream is = com.melah.Pack.class.getResourceAsStream("/fields.xml");
GenericPackager packager = new GenericPackager(is);
ISOMsg isoMsg = new ISOMsg();
isoMsg.setPackager(packager);
isoMsg.set(0, "0200");
isoMsg.set(2, "5000000000000000");
isoMsg.set(3, "317000");
isoMsg.set(4, "000000000000");
isoMsg.set(7, new SimpleDateFormat("MMddHHmmss").format(1221133630));
isoMsg.set(11, "594972");
isoMsg.set(12, "153630");
isoMsg.set(13, "1221");
isoMsg.set(14, "1912");
isoMsg.set(15, "1221");
isoMsg.set(18, "6012");
isoMsg.set(22, "020");
isoMsg.set(25, "27");
isoMsg.set(28, "C00000000");
isoMsg.set(30, "C00000000");
isoMsg.set(32, "588892");
isoMsg.set(37, "000540000000");
isoMsg.set(41, "11430000");
isoMsg.set(42, "000000011431143");
isoMsg.set(43, "XYZ Banking");
isoMsg.set(49, "840");
isoMsg.set(56, "1510");
isoMsg.set(59, "0540000000");
isoMsg.set(102, "5000000000000000");
isoMsg.set(123, "100000000000000");
isoMsg.set("127.003", "XYZ XYZ");
isoMsg.set("127.033", "6000");
isoMsg.set(54, "500000000");
byte[] bIsoMsg = isoMsg.pack();
String isoMessage = "";
for (int i = 0; i < bIsoMsg.length; i++) {
String a = "";
isoMessage += (char) bIsoMsg[i];
}
System.out.println(" Packed ISO8385 Message = '"+isoMessage+"'");
}
}
解包器：
import org.jpos.iso.ISOException;
import org.jpos.iso.ISOMsg;
import org.jpos.iso.ISOUtil;
import org.jpos.iso.packager.GenericPackager;
import java.io.InputStream;
public class UnpackISOMessage {
public static void main(String[] args) {
UnpackISOMessage iso = new UnpackISOMessage();
try {
ISOMsg isoMsg = iso.parseISOMessage();
iso.printISOMessage(isoMsg);
} catch (Exception e) {
e.printStackTrace();
}
}
private ISOMsg parseISOMessage() throws Exception {
String message = "0200F23E449508E0852000000000040000221650000000000000003170000000000000000115051213594972153630122119121221601202027C00000000C000000000658889200054000000011430000000000011431143XYZ Banking 84000950000000000415100100540000000165000000000000000015100000000000000000060 ﾀ XYZ XYZ 6000";
System.out.printf("Message = %s%n", message);
try {
InputStream is = getClass().getResourceAsStream("/fields.xml");
GenericPackager packager = new GenericPackager(is);
ISOMsg isoMsg = new ISOMsg();
isoMsg.setPackager(packager);
isoMsg.unpack(message.getBytes());
return isoMsg;
} catch (ISOException e) {
throw new Exception(e);
}
}
private void printISOMessage(ISOMsg isoMsg) {
try {
isoMsg.dump(System.out, "");
System.out.println(ISOUtil.hexdump(isoMsg.pack()));
System.out.printf("MTI = %s%n", isoMsg.getMTI());
System.out.println("127.003 : " + isoMsg.getString("127.003"));
System.out.println("127.033 : " + isoMsg.getString("127.033"));
for (int i = 1; i <= isoMsg.getMaxField(); i++) {
if (isoMsg.hasField(i)) {
System.out.printf("Field (%s) = %s%n", i, isoMsg.getString(i));
}
}
} catch (ISOException e) {
e.printStackTrace();
}
}
}
fields.xml
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE isopackager SYSTEM "genericpackager.dtd">
<isopackager>
<isofield id="0" length="4" name="MESSAGE TYPE INDICATOR" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="1" length="16" name="BIT MAP" class="org.jpos.iso.IFA_BITMAP"/>
<isofield id="2" length="19" name="SECRET ID" class="org.jpos.iso.IFA_LLNUM"/>
<isofield id="3" length="6" name="PROCESSING CODE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="4" length="12" name="AMOUNT, TRANSACTION" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="5" length="12" name="AMOUNT, SETTLEMENT" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="6" length="12" name="AMOUNT, CARDHOLDER BILLING" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="7" length="10" name="TRANSMISSION DATE AND TIME" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="8" length="8" name="AMOUNT, CARDHOLDER BILLING FEE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="9" length="8" name="CONVERSION RATE, SETTLEMENT" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="10" length="8" name="CONVERSION RATE, CARDHOLDER BILLING" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="11" length="6" name="SYSTEM TRACE AUDIT NUMBER" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="12" length="6" name="TIME, LOCAL TRANSACTION" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="13" length="4" name="DATE, LOCAL TRANSACTION" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="14" length="4" name="DATE, EXPIRATION" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="15" length="4" name="DATE, SETTLEMENT" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="16" length="4" name="DATE, CONVERSION" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="17" length="4" name="DATE, CAPTURE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="18" length="4" name="MERCHANTS TYPE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="19" length="3" name="ACQUIRING INSTITUTION COUNTRY CODE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="20" length="3" name="PAN EXTENDED COUNTRY CODE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="21" length="3" name="FORWARDING INSTITUTION COUNTRY CODE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="22" length="3" name="POINT OF SERVICE ENTRY MODE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="23" length="3" name="CARD SEQUENCE NUMBER" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="24" length="3" name="NETWORK INTERNATIONAL IDENTIFIEER" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="25" length="2" name="POINT OF SERVICE CONDITION CODE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="26" length="2" name="POINT OF SERVICE PIN CAPTURE CODE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="27" length="1" name="AUTHORIZATION IDENTIFICATION RESP LEN" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="28" length="9" name="AMOUNT, TRANSACTION FEE" class="org.jpos.iso.IFA_AMOUNT"/>
<isofield id="29" length="9" name="AMOUNT, SETTLEMENT FEE" class="org.jpos.iso.IFA_AMOUNT"/>
<isofield id="30" length="9" name="AMOUNT, TRANSACTION PROCESSING FEE" class="org.jpos.iso.IFA_AMOUNT"/>
<isofield id="31" length="9" name="AMOUNT, SETTLEMENT PROCESSING FEE" class="org.jpos.iso.IFA_AMOUNT"/>
<isofield id="32" length="11" name="ACQUIRING INSTITUTION IDENT CODE" class="org.jpos.iso.IFA_LLNUM"/>
<isofield id="33" length="11" name="FORWARDING INSTITUTION IDENT CODE" class="org.jpos.iso.IFA_LLNUM"/>
<isofield id="34" length="28" name="PAN EXTENDED" class="org.jpos.iso.IFA_LLCHAR"/>
<isofield id="35" length="37" name="TRACK 2 DATA" class="org.jpos.iso.IFA_LLNUM"/>
<isofield id="36" length="104" name="TRACK 3 DATA" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="37" length="12" name="RETRIEVAL REFERENCE NUMBER" class="org.jpos.iso.IF_CHAR"/>
<isofield id="38" length="6" name="AUTHORIZATION IDENTIFICATION RESPONSE" class="org.jpos.iso.IF_CHAR"/>
<isofield id="39" length="2" name="RESPONSE CODE" class="org.jpos.iso.IF_CHAR"/>
<isofield id="40" length="3" name="SERVICE RESTRICTION CODE" class="org.jpos.iso.IF_CHAR"/>
<isofield id="41" length="8" name="CARD ACCEPTOR TERMINAL IDENTIFICACION" class="org.jpos.iso.IF_CHAR"/>
<isofield id="42" length="15" name="CARD ACCEPTOR IDENTIFICATION CODE" class="org.jpos.iso.IF_CHAR"/>
<isofield id="43" length="40" name="CARD ACCEPTOR NAME/LOCATION" class="org.jpos.iso.IF_CHAR"/>
<isofield id="44" length="25" name="ADITIONAL RESPONSE DATA" class="org.jpos.iso.IFA_LLCHAR"/>
<isofield id="45" length="76" name="TRACK 1 DATA" class="org.jpos.iso.IFA_LLCHAR"/>
<isofield id="46" length="999" name="ADITIONAL DATA - ISO" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="47" length="999" name="ADITIONAL DATA - NATIONAL" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="48" length="999" name="ADITIONAL DATA - PRIVATE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="49" length="3" name="CURRENCY CODE, TRANSACTION" class="org.jpos.iso.IF_CHAR"/>
<isofield id="50" length="3" name="CURRENCY CODE, SETTLEMENT" class="org.jpos.iso.IF_CHAR"/>
<isofield id="51" length="3" name="CURRENCY CODE, CARDHOLDER BILLING" class="org.jpos.iso.IF_CHAR"/>
<isofield id="52" length="16" name="PIN DATA" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="53" length="16" name="SECURITY RELATED CONTROL INFORMATION" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="54" length="120" name="ADDITIONAL AMOUNTS" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="55" length="999" name="RESERVED ISO" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="56" length="999" name="RESERVED ISO" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="57" length="999" name="RESERVED NATIONAL" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="58" length="999" name="RESERVED NATIONAL" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="59" length="999" name="RESERVED NATIONAL" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="60" length="999" name="RESERVED PRIVATE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="61" length="999" name="RESERVED PRIVATE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="62" length="999" name="RESERVED PRIVATE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="63" length="999" name="RESERVED PRIVATE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="64" length="8" name="MESSAGE AUTHENTICATION CODE FIELD" class="org.jpos.iso.IFA_BINARY"/>
<isofield id="65" length="1" name="BITMAP, EXTENDED" class="org.jpos.iso.IFA_BINARY"/>
<isofield id="66" length="1" name="SETTLEMENT CODE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="67" length="2" name="EXTENDED PAYMENT CODE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="68" length="3" name="RECEIVING INSTITUTION COUNTRY CODE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="69" length="3" name="SETTLEMENT INSTITUTION COUNTRY CODE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="70" length="3" name="NETWORK MANAGEMENT INFORMATION CODE" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="71" length="4" name="MESSAGE NUMBER" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="72" length="4" name="MESSAGE NUMBER LAST" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="73" length="6" name="DATE ACTION" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="74" length="10" name="CREDITS NUMBER" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="75" length="10" name="CREDITS REVERSAL NUMBER" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="76" length="10" name="DEBITS NUMBER" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="77" length="10" name="DEBITS REVERSAL NUMBER" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="78" length="10" name="TRANSFER NUMBER" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="79" length="10" name="TRANSFER REVERSAL NUMBER" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="80" length="10" name="INQUIRIES NUMBER" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="81" length="10" name="AUTHORIZATION NUMBER" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="82" length="12" name="CREDITS, PROCESSING FEE AMOUNT" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="83" length="12" name="CREDITS, TRANSACTION FEE AMOUNT" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="84" length="12" name="DEBITS, PROCESSING FEE AMOUNT" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="85" length="12" name="DEBITS, TRANSACTION FEE AMOUNT" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="86" length="16" name="CREDITS, AMOUNT" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="87" length="16" name="CREDITS, REVERSAL AMOUNT" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="88" length="16" name="DEBITS, AMOUNT" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="89" length="16" name="DEBITS, REVERSAL AMOUNT" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="90" length="42" name="ORIGINAL DATA ELEMENTS" class="org.jpos.iso.IFA_NUMERIC"/>
<isofield id="91" length="1" name="FILE UPDATE CODE" class="org.jpos.iso.IF_CHAR"/>
<isofield id="92" length="2" name="FILE SECURITY CODE" class="org.jpos.iso.IF_CHAR"/>
<isofield id="93" length="6" name="RESPONSE INDICATOR" class="org.jpos.iso.IF_CHAR"/>
<isofield id="94" length="7" name="SERVICE INDICATOR" class="org.jpos.iso.IF_CHAR"/>
<isofield id="95" length="42" name="REPLACEMENT AMOUNTS" class="org.jpos.iso.IF_CHAR"/>
<isofield id="96" length="16" name="MESSAGE SECURITY CODE" class="org.jpos.iso.IFA_BINARY"/>
<isofield id="97" length="17" name="AMOUNT, NET SETTLEMENT" class="org.jpos.iso.IFA_AMOUNT"/>
<isofield id="98" length="25" name="PAYEE" class="org.jpos.iso.IF_CHAR"/>
<isofield id="99" length="11" name="SETTLEMENT INSTITUTION IDENT CODE" class="org.jpos.iso.IFA_LLNUM"/>
<isofield id="100" length="11" name="RECEIVING INSTITUTION IDENT CODE" class="org.jpos.iso.IFA_LLNUM"/>
<isofield id="101" length="17" name="FILE NAME" class="org.jpos.iso.IFA_LLCHAR"/>
<isofield id="102" length="28" name="FROM ACCOUNT" class="org.jpos.iso.IFA_LLCHAR"/>
<isofield id="103" length="10" name="ACCOUNT IDENTIFICATION 2" class="org.jpos.iso.IFA_LLCHAR"/>
<isofield id="104" length="100" name="TRANSACTION DESCRIPTION" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="105" length="999" name="RESERVED ISO USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="106" length="999" name="RESERVED ISO USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="107" length="999" name="RESERVED ISO USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="108" length="999" name="RESERVED ISO USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="109" length="999" name="RESERVED ISO USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="110" length="999" name="RESERVED ISO USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="111" length="999" name="RESERVED ISO USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="112" length="999" name="RESERVED NATIONAL USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="113" length="999" name="RESERVED NATIONAL USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="114" length="999" name="RESERVED NATIONAL USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="115" length="999" name="RESERVED NATIONAL USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="116" length="999" name="RESERVED NATIONAL USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="117" length="999" name="RESERVED NATIONAL USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="118" length="999" name="RESERVED NATIONAL USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="119" length="999" name="RESERVED NATIONAL USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="120" length="999" name="RESERVED PRIVATE USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="121" length="999" name="RESERVED PRIVATE USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="122" length="999" name="RESERVED PRIVATE USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="123" length="999" name="RESERVED PRIVATE USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="124" length="999" name="RESERVED PRIVATE USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="125" length="999" name="RESERVED PRIVATE USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield id="126" length="999" name="RESERVED PRIVATE USE" class="org.jpos.iso.IFA_LLLCHAR"/>
<!--<isofield id="127" length="999" name="RESERVED PRIVATE USE" class="org.jpos.iso.IFA_LLLCHAR"/>-->
<isofieldpackager
id="127"
length="999999"
name="RESERVED PRIVATE USE"
class="org.jpos.iso.IFA_LLLLLLBINARY"
packager="org.jpos.iso.packager.GenericSubFieldPackager">
<isofield
id="0"
length="0"
name="PLACEHOLDER"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="1"
length="8"
name="BITMAP"
class="org.jpos.iso.IFB_BITMAP"/>
<isofield
id="2"
length="32"
name="SWITCH KEY"
class="org.jpos.iso.IFA_LLCHAR"/>
<isofield
id="3"
length="48"
name="ROUTING INFORMATION"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="4"
length="22"
name="POS DATA"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="5"
length="73"
name="SERVICE STATION DATA"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="6"
length="2"
name="AUTHORIZATION PROFILE"
class="org.jpos.iso.IFA_NUMERIC"/>
<isofield
id="7"
length="50"
name="CHECK DATA"
class="org.jpos.iso.IFA_LLCHAR"/>
<isofield
id="8"
length="128"
name="RETENTION DATA"
class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield
id="9"
length="255"
name="ADDITIONAL NODE DATA"
class="org.jpos.iso.IFA_LLLCHAR"/>
<isofield
id="10"
length="3"
name="CVV2"
class="org.jpos.iso.IFA_NUMERIC"/>
<isofield
id="11"
length="32"
name="ORIGINAL KEY"
class="org.jpos.iso.IFA_LLCHAR"/>
<isofield
id="12"
length="25"
name="TERMINAL OWNDER"
class="org.jpos.iso.IFA_LLCHAR"/>
<isofield
id="13"
length="17"
name="POS GEOGRAPHIC DATA"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="14"
length="8"
name="SPONSOR BANK"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="15"
length="29"
name="AVS REQUEST"
class="org.jpos.iso.IFA_LLCHAR"/>
<isofield
id="16"
length="1"
name="AVS RESPONSE"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="17"
length="50"
name="CARDHOLDER INFORMATION"
class="org.jpos.iso.IFA_LLCHAR"/>
<isofield
id="18"
length="50"
name="VALIDATION DATA"
class="org.jpos.iso.IFA_LLCHAR"/>
<isofield
id="19"
length="45"
name="BANK DETAILS"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="20"
length="8"
name="AUTHORIZER DATE SETTLEMENT"
class="org.jpos.iso.IFA_NUMERIC"/>
<isofield
id="21"
length="12"
name="RECORD IDENTIFICATION"
class="org.jpos.iso.IFA_LLCHAR"/>
<isofield
id="22"
length="99999"
name="MSDN"
class="org.jpos.iso.IFA_LLLLLCHAR"/>
<isofield
id="23"
length="253"
name="PAYEE NAME AND ADDRESS"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="24"
length="28"
name="PAYER ACCOUNT INFORMATION"
class="org.jpos.iso.IFA_LLCHAR"/>
<isofield
id="25"
length="8000"
name="ICC DATA"
class="org.jpos.iso.IFA_LLLLCHAR"/>
<isofield
id="33"
length="4"
name="EXTENDED TRAN-TYPE"
class="org.jpos.iso.IFA_NUMERIC"/>
</isofieldpackager>
<isofield id="128" length="8" name="MAC 2" class="org.jpos.iso.IFA_BINARY"/>
</isopackager>
例外：
Message = 0200F23E449508E0852000000000040000221650000000000000003170000000000000000115051213594972153630122119121221601202027C00000000C000000000658889200054000000011430000000000011431143XYZ Banking 84000950000000000415100100540000000165000000000000000015100000000000000000060 ﾀ XYZ XYZ 6000
java.lang.Exception: org.jpos.iso.ISOException: org.jpos.iso.IFA_LLCHAR: Problem unpacking field 11 (java.lang.NegativeArraySizeException) unpacking field=127, consumed=287
at com.melah.UnpackISOMessage.parseISOMessage(UnpackISOMessage.java:32)
at com.melah.UnpackISOMessage.main(UnpackISOMessage.java:14)
Caused by: org.jpos.iso.ISOException: org.jpos.iso.IFA_LLCHAR: Problem unpacking field 11 (java.lang.NegativeArraySizeException) unpacking field=127, consumed=287
at org.jpos.iso.ISOBasePackager.unpack(ISOBasePackager.java:340)
at org.jpos.iso.ISOMsg.unpack(ISOMsg.java:468)
at com.melah.UnpackISOMessage.parseISOMessage(UnpackISOMessage.java:29)
... 1 more
Jpos Maven依赖性：
<dependency>
<groupId>org.jpos</groupId>
<artifactId>jpos</artifactId>
<version>2.1.2</version>
</dependency>
代码可在github上找到：https://github.com/melah500/jpos-field-127.003