打包字段61出错(org.jpos.iso.ISOException: java.lang.NullPointerException (java.lang.NullPointerException))
打包字段61出错(org.jpos.iso.ISOException: java.lang.NullPointerException (java.lang.NullPointerException))
提问于 2018-02-20 19:25:21
我使用mastercard接口规范来打包字段61，如下所示：
<isofieldpackager
id="61"
length="40"
name="Point-of-Service (POS) Data"
class="org.jpos.iso.IFB_LLBINARY"
emitBitmap="false"
packager="org.jpos.iso.packager.GenericSubFieldPackager">
<isofield
id="1"
length="1"
name="POS Terminal Attendance"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="3"
length="1"
name="POS Terminal Location"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="4"
length="1"
name="POS Cardholder Presence"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="5"
length="1"
name="POS Card Presence"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="6"
length="1"
name="POS Card Capture Capabilities"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="7"
length="1"
name="POS Transaction Status"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="8"
length="1"
name="POS Transaction Security"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="10"
length="1"
name="Cardholder-Activated Terminal Level"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="11"
length="1"
name="POS Card Data Terminal Input Capability Indicator"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="12"
length="2"
name="POS Card Data Terminal Input Capability Indicator"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="13"
length="3"
name="POS Country Code"
class="org.jpos.iso.IF_CHAR"/>
</isofieldpackager>然后我像这样调用打包器：
ISOMsg message = new ISOMsg();
message.set("61.1", "1"); //Unattended terminal
message.set("61.3", "2"); //Off premises of card acceptor facility
message.set("61.4", "5"); //Electronic order (home PC, Internet, mobile phone, PDA)
message.set("61.5", "1"); //Card not present
message.set("61.6", "0"); //Terminal/operator has no card capture capability
message.set("61.7", "0"); //Normal request (original presentment)
message.set("61.8", "0"); //No security concern
message.set("61.10", "6"); //Authorized Level 6 CAT: Electronic commerce
message.set("61.11", "6"); //Key entry only
message.set("61.12", "00");
message.set("61.13", "716"); //country code Zimbabwe但是我得到了一个如下所示的excetion：
<log realm="channel/127.0.0.1:1234" at="2018-02-20T13:02:14.775" lifespan="31ms">
<connect>
Exception in thread "main" org.jpos.iso.ISOException: error packing field 61 (org.jpos.iso.ISOException: java.lang.NullPointerException (java.lang.NullPointerException))
at org.jpos.iso.ISOBasePackager.pack(ISOBasePackager.java:184)
at org.jpos.iso.ISOMsg.pack(ISOMsg.java:456)
at com.jpos.test.Test.main(Test.java:51)
Nested:org.jpos.iso.ISOException: java.lang.NullPointerException (java.lang.NullPointerException)
at org.jpos.iso.packager.GenericSubFieldPackager.pack(GenericSubFieldPackager.java:167)
at org.jpos.iso.ISOMsgFieldPackager.pack(ISOMsgFieldPackager.java:60)
at org.jpos.iso.ISOBasePackager.pack(ISOBasePackager.java:175)
at org.jpos.iso.ISOMsg.pack(ISOMsg.java:456)
at com.jpos.test.Test.main(Test.java:51)
Nested:java.lang.NullPointerException
at org.jpos.iso.packager.GenericSubFieldPackager.pack(GenericSubFieldPackager.java:136)
at org.jpos.iso.ISOMsgFieldPackager.pack(ISOMsgFieldPackager.java:60)
at org.jpos.iso.ISOBasePackager.pack(ISOBasePackager.java:175)
at org.jpos.iso.ISOMsg.pack(ISOMsg.java:456)
at com.jpos.test.Test.main(Test.java:51)
/home/terrence/.cache/netbeans/8.2/executor-snippets/run.xml:53: Java returned: 1
BUILD FAILED (total time: 1 second)您能帮助我理解为什么会出现此错误吗?我尝试更改打包程序上的数据类，并将泛型子字段打包程序更改为使用europay子字段打包程序和相应的数据类，但仍然得到相同的异常
回答 1
Stack Overflow用户
回答已采纳
发布于 2018-02-22 06:15:15
这是一个无位图的字段。问题可能是缺少字段2的定义。另外，要注意这个字段(我相信)是IFB_LLLBINARY而不是IFB_LLBINARY。
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原文链接：
https://stackoverflow.com/questions/48884230
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