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[英]How to pass an array(*) of binary(4) parameter to IBM iSeries api in C#?
[英]Programming IBM iSeries API QUSLSPL in C#
有人可以幫我用完整的C#代碼調用SPLF0200格式的QUSLSPL嗎? 我可以調用該程序,但不知道如何捕獲/讀取輸出。 我是這個領域的新手。 感謝您的幫助。
這是我的代碼。
cwbx.ProgramParameters parameters = new cwbx.ProgramParameters();
//user space name
parameters.Append("usrspcnam", cwbrcParameterTypeEnum.cwbrcInout, 20);
StringConverter stringConverterUsrSpaceNm = new cwbx.StringConverter();
stringConverterUsrSpaceNm.Length = 20;
parameters["usrspcnam"].Value = stringConverterUsrSpaceNm.ToBytes("HRAHMAN QGPL ");
//Format
parameters.Append("frmname", cwbrcParameterTypeEnum.cwbrcInout, 8);
StringConverter stringConverterFrmname = new cwbx.StringConverter();
stringConverterFrmname.Length = 8;
parameters["frmname"].Value = stringConverterFrmname.ToBytes("SPLF0200");
//User Name
parameters.Append("usrnam", cwbrcParameterTypeEnum.cwbrcInout, 10);
StringConverter stringConverterUsrnam = new cwbx.StringConverter();
stringConverterUsrnam.Length = 10;
//parameters["usrnam"].Value = stringConverterUsrnam.ToBytes("*CURRENT");
parameters["usrnam"].Value = stringConverterUsrnam.ToBytes(" ");
//qualified output queue
parameters.Append("cola", cwbrcParameterTypeEnum.cwbrcInout, 20);
StringConverter stringConverterCola = new cwbx.StringConverter();
stringConverterCola.Length = 20;
//parameters["cola"].Value = stringConverterCola.ToBytes("*ALL");
parameters["cola"].Value = stringConverterCola.ToBytes(" ");
//form type
parameters.Append("frmtyp", cwbrcParameterTypeEnum.cwbrcInout, 10);
StringConverter stringConverterFrmtyp = new cwbx.StringConverter();
stringConverterFrmtyp.Length = 10;
//parameters["frmtyp"].Value = stringConverterFrmtyp.ToBytes("*ALL");
parameters["frmtyp"].Value = stringConverterFrmtyp.ToBytes(" ");
//user-specific data
parameters.Append("usrdta", cwbrcParameterTypeEnum.cwbrcInout, 10);
StringConverter stringConverterUsrdta = new cwbx.StringConverter();
stringConverterUsrdta.Length = 10;
//parameters["usrdta"].Value = stringConverterUsrdta.ToBytes("*ALL");
parameters["usrdta"].Value = stringConverterUsrdta.ToBytes(" ");
//error
parameters.Append("error", cwbrcParameterTypeEnum.cwbrcInout, 116);
Structure sc2 = new Structure();
sc2.Fields.Append("bytesprov", 4);
sc2.Fields.Append("bytesavail", 4);
sc2.Fields.Append("messageid", 7);
sc2.Fields.Append("err", 1);
sc2.Fields.Append("messagedta", 100);
parameters["error"].Value = sc2.Bytes;
//qualified job name
parameters.Append("qualifiedjobnm", cwbrcParameterTypeEnum.cwbrcInput, 26);
StringConverter stringConverterUsrdta1 = new cwbx.StringConverter();
stringConverterUsrdta1.Length = 26;
parameters["qualifiedjobnm"].Value = stringConverterUsrdta1.ToBytes("* ");
//keys
parameters.Append("keys", cwbrcParameterTypeEnum.cwbrcInput, 44); //44 is 11 keys times 4 bytes per key
LongConverter lc = new cwbx.LongConverter();
Structure keys = new Structure();
keys.Fields.Append("Spooledfilename", 4); //char10 201
keys.Fields["Spooledfilename"].Value = lc.ToBytes(201);
keys.Fields.Append("Username", 4); //char10 203
keys.Fields["Username"].Value = lc.ToBytes(203);
keys.Fields.Append("opqueue", 4); //206
keys.Fields["opqueue"].Value = lc.ToBytes(206);
keys.Fields.Append("userdata", 4); //209
keys.Fields["userdata"].Value = lc.ToBytes(209);
keys.Fields.Append("status", 4); //210
keys.Fields["status"].Value = lc.ToBytes(210);
keys.Fields.Append("totpages", 4); //bin 211
keys.Fields["totpages"].Value = lc.ToBytes(211);
keys.Fields.Append("copies", 4); //bin 213
keys.Fields["copies"].Value = lc.ToBytes(213);
keys.Fields.Append("openeddate", 4); //216
keys.Fields["openeddate"].Value = lc.ToBytes(216);
keys.Fields.Append("opentime", 4); //217
keys.Fields["opentime"].Value = lc.ToBytes(217);
keys.Fields.Append("jobid", 4); //218
keys.Fields["jobid"].Value = lc.ToBytes(218);
keys.Fields.Append("fileid", 4); //219
keys.Fields["fileid"].Value = lc.ToBytes(219);
parameters["keys"].Value = keys.Bytes;
//number of keys to return
parameters.Append("numberoffields", cwbrcParameterTypeEnum.cwbrcInput, 4);
LongConverter LongConverterKeys = new cwbx.LongConverter();
parameters["numberoffields"].Value = LongConverterKeys.ToBytes(11); //11 keys in total
program.Invoke(true, ref parameters);
現在接下來呢? 在哪里以及如何讀取輸出? 感謝您的回應。
您首先選擇了一個悍馬。 您有一個具有全鍵列表格式的用戶空間列表API。 那些很復雜。 我會盡力解釋這一切。 系好安全帶!
除了錯誤結構中的內容以外,QUSLSPL API不返回任何內容。 其他所有內容都是輸入參數。 要訪問API生成的假脫機文件列表,必須訪問用戶空間對象。 在您的示例中,用戶空間為QGPL / HRAHMAN。 在研究用戶空間的輸出之前,讓我們開始了解如何使用用戶空間。
用戶空間只是存儲在主機系統上的庫中的舊字節大塊,最大大小為16,776,704字節。 您不僅可以列出API結果,還可以使用它們,但這就是我真正使用它們的全部。 需要用戶空間的列表API的步驟如下:
通過創建用戶空間(QUSCRTUS)API完成創建用戶空間。 該API非常簡單。 您為它傳遞用戶空間的限定名稱,一些初始值和API錯誤結構(以便您處理出現的問題)。 可以在以下位置找到API定義: http : //www.ibm.com/support/knowledgecenter/ssw_ibm_i_71/apis/quscrtus.htm
參數為:
調用QUSLSPL API后,您需要從用戶空間檢索數據。 為此,請使用QUSRTVUS API。 該API包含用戶空間名稱,起始位置,長度,接收器變量和API錯誤結構。 API定義在這里: http : //www.ibm.com/support/knowledgecenter/ssw_ibm_i_71/apis/qusrtvus.htm
參數為:
完成后,請使用QUSDLTUS API刪除用戶空間。 這甚至更容易,它采用了完全限定的名稱和API錯誤結構。 可在以下位置找到API定義: http : //www.ibm.com/support/knowledgecenter/ssw_ibm_i_71/apis/qusdltus.htm
列表API以特定格式將數據返回到用戶空間。 看起來像這樣:
就通讀列表API而言,真正重要的是該通用標頭中用戶空間前面的以下值。 請注意,這些位置是從零開始的。
使用此信息,您可以分塊讀取用戶空間。 每個塊都以offset +(當前從零開始的條目號*每個條目的大小)開始,並以條目大小的長度運行。
從QUSLSPL返回的格式為SPLF0200的列表中的每個條目都有兩個部分。 前4個字節保存返回的字段計數。 然后,它具有對每個字段重復的字段數據結構。 字段數據結構的大小是可變的。 您必須遍歷每個字段,查看字段鍵,然后使用該鍵確定要返回的值。 最終結果是兩級循環。 外循環遍歷每個假脫機文件條目。 內部循環循環瀏覽以SPLF0200格式返回的每個字段。
這是一些基於您原始問題的示例代碼。 首先,請注意以下幾點:
還要注意,我略微更改了參數以顯示當前用戶的假脫機文件,因為在測試此樣本時,我不想在當前作業中生成假脫機數據。
//Define a single StringConverter and LongConverter to re-use
cwbx.StringConverter stringConverter = new cwbx.StringConverter();
cwbx.LongConverter longConverter = new cwbx.LongConverter();
//Type the user space name only once. It's re-used a lot.
String userSpaceName = "HRAHMAN QGPL ";
//Connect to the AS/400
AS400System as400 = new AS400System();
as400.Define("MY_SYSTEM_HOST_ADDRESS");
as400.UserID = "MY_USER";
as400.Password = "MY_PASSWORD";
as400.Connect(cwbcoServiceEnum.cwbcoServiceRemoteCmd);
//Define the error structure once, to be re-used a lot.
Structure sc2 = new Structure();
sc2.Fields.Append("bytesprov", 4);
sc2.Fields.Append("bytesavail", 4);
sc2.Fields.Append("messageid", 7);
sc2.Fields.Append("err", 1);
sc2.Fields.Append("messagedta", 100);
sc2.Fields["bytesavail"].Value = longConverter.ToBytes(sc2.Length);
//Create the user space
cwbx.Program quscrtus = new cwbx.Program();
quscrtus.system = as400;
quscrtus.LibraryName = "QSYS";
quscrtus.ProgramName = "QUSCRTUS";
cwbx.ProgramParameters quscrtusParms = new cwbx.ProgramParameters();
quscrtusParms.Append("UserSpaceName", cwbrcParameterTypeEnum.cwbrcInput, 20).Value = stringConverter.ToBytes(userSpaceName);
quscrtusParms.Append("ExtendedAttr", cwbrcParameterTypeEnum.cwbrcInput, 10).Value = stringConverter.ToBytes("".PadRight(10));
quscrtusParms.Append("InitialSize", cwbrcParameterTypeEnum.cwbrcInput, 4).Value = longConverter.ToBytes(1);
quscrtusParms.Append("InitialValue", cwbrcParameterTypeEnum.cwbrcInput, 1).Value = longConverter.ToBytes(0);
quscrtusParms.Append("Auth", cwbrcParameterTypeEnum.cwbrcInput, 10).Value = stringConverter.ToBytes("*ALL".PadRight(10));
quscrtusParms.Append("Desc", cwbrcParameterTypeEnum.cwbrcInput, 50).Value = stringConverter.ToBytes("QUSLSPL Results".PadRight(50));
quscrtusParms.Append("Replace", cwbrcParameterTypeEnum.cwbrcInput, 10).Value = stringConverter.ToBytes("*YES".PadRight(10));
quscrtusParms.Append("APIError", cwbrcParameterTypeEnum.cwbrcInout, sc2.Length).Value = sc2.Bytes;
quscrtus.Call(quscrtusParms);
sc2.Bytes = quscrtusParms["APIError"].Value;
if (((string)stringConverter.FromBytes(sc2.Fields["messageid"].Value)).Trim().Length > 0)
{
//deal with error
return;
}
//Call the list spooled files API
cwbx.Program quslspl = new cwbx.Program();
quslspl.system = as400;
quslspl.LibraryName = "QSYS";
quslspl.ProgramName = "QUSLSPL";
ProgramParameters quslsplParms = new cwbx.ProgramParameters();
quslsplParms.Append("usrspcnam", cwbrcParameterTypeEnum.cwbrcInput, 20).Value = stringConverter.ToBytes(userSpaceName); //user space name
quslsplParms.Append("frmname", cwbrcParameterTypeEnum.cwbrcInput, 8).Value = stringConverter.ToBytes("SPLF0200"); //Format
quslsplParms.Append("usrnam", cwbrcParameterTypeEnum.cwbrcInput, 10).Value = stringConverter.ToBytes("*CURRENT".PadRight(10)); //User Name
quslsplParms.Append("cola", cwbrcParameterTypeEnum.cwbrcInput, 20).Value = stringConverter.ToBytes("*ALL".PadRight(20)); //qualified output queue
quslsplParms.Append("frmtyp", cwbrcParameterTypeEnum.cwbrcInput, 10).Value = stringConverter.ToBytes("*ALL".PadRight(10)); //form type
quslsplParms.Append("usrdta", cwbrcParameterTypeEnum.cwbrcInput, 10).Value = stringConverter.ToBytes("*ALL".PadRight(10)); //user-specific data
quslsplParms.Append("error", cwbrcParameterTypeEnum.cwbrcInout, sc2.Length).Value = sc2.Bytes; //error
quslsplParms.Append("qualifiedjobnm", cwbrcParameterTypeEnum.cwbrcInput, 26).Value = stringConverter.ToBytes("".PadRight(26)); //qualified job name
//keys. The SPLF0200 structure uses a list of field keys. So we tell the API which keys we want and that's what it returns.
cwbx.Structure keys = new cwbx.Structure();
keys.Fields.Append("Spooledfilename", 4).Value = longConverter.ToBytes(201);
keys.Fields.Append("Username", 4).Value = longConverter.ToBytes(203);
keys.Fields.Append("opqueue", 4).Value = longConverter.ToBytes(206);
keys.Fields.Append("userdata", 4).Value = longConverter.ToBytes(209);
keys.Fields.Append("status", 4).Value = longConverter.ToBytes(210);
keys.Fields.Append("totpages", 4).Value = longConverter.ToBytes(211);
keys.Fields.Append("copies", 4).Value = longConverter.ToBytes(213);
keys.Fields.Append("openeddate", 4).Value = longConverter.ToBytes(216);
keys.Fields.Append("opentime", 4).Value = longConverter.ToBytes(217);
keys.Fields.Append("jobid", 4).Value = longConverter.ToBytes(218);
keys.Fields.Append("fileid", 4).Value = longConverter.ToBytes(219);
quslsplParms.Append("keys", cwbrcParameterTypeEnum.cwbrcInput, keys.Length).Value=keys.Bytes;
quslsplParms.Append("numberoffields", cwbrcParameterTypeEnum.cwbrcInput, 4).Value = longConverter.ToBytes(keys.Fields.Count); //number of keys to return
quslspl.Call(quslsplParms);
sc2.Bytes = quslsplParms["error"].Value;
if (((string)stringConverter.FromBytes(sc2.Fields["messageid"].Value)).Trim().Length > 0)
{
//deal with error
return;
}
//Get the list information from the user space
cwbx.Structure listInfo = new cwbx.Structure();
listInfo.Fields.Append("OffsetToData", 4);
listInfo.Fields.Append("DataSectionSize", 4);
listInfo.Fields.Append("NumberOfEntries", 4);
listInfo.Fields.Append("EntrySize", 4);
//The List information data structure starts at zero-based position 0x7c. The retrieve user space
//API uses 1-based indexing. Retreive the list information from the user space.
cwbx.Program qusrtvus = new cwbx.Program();
qusrtvus.system = as400;
qusrtvus.LibraryName = "QSYS";
qusrtvus.ProgramName = "QUSRTVUS";
cwbx.ProgramParameters qusrtvusParms = new cwbx.ProgramParameters();
qusrtvusParms.Append("UserSpaceName", cwbrcParameterTypeEnum.cwbrcInput, 20).Value = stringConverter.ToBytes(userSpaceName);
qusrtvusParms.Append("StartingPosition", cwbrcParameterTypeEnum.cwbrcInput, 4).Value = longConverter.ToBytes(0x7c + 1);
qusrtvusParms.Append("Length", cwbrcParameterTypeEnum.cwbrcInput, 4).Value = longConverter.ToBytes(listInfo.Length);
qusrtvusParms.Append("Receiver", cwbrcParameterTypeEnum.cwbrcInout, listInfo.Length);
qusrtvusParms.Append("APIError", cwbrcParameterTypeEnum.cwbrcInout, sc2.Length).Value = sc2.Bytes;
qusrtvus.Call(qusrtvusParms);
sc2.Bytes = qusrtvusParms["APIError"].Value;
if (((string)stringConverter.FromBytes(sc2.Fields["messageid"].Value)).Trim().Length > 0)
{
//deal with error
return;
}
listInfo.Bytes = qusrtvusParms["Receiver"].Value;
int offsetToData = longConverter.FromBytes(listInfo.Fields["OffsetToData"].Value);
int numberOfEntries = longConverter.FromBytes(listInfo.Fields["NumberOfEntries"].Value);
int entrySize = longConverter.FromBytes(listInfo.Fields["EntrySize"].Value);
//Define the structure to receive the SPLF0200 Field data. This is described in the QUSLSPL API.
//Note: According to the API documentation, this is the only part that repeats for each key. The first
//four bytes of the SPLF0200 structure is the count of keys returned.
cwbx.Structure SPLF0200Field = new cwbx.Structure(); //individual field value data
SPLF0200Field.Fields.Append("LengthOfInformation", 4);
SPLF0200Field.Fields.Append("KeyField", 4);
SPLF0200Field.Fields.Append("TypeOfData", 1);
SPLF0200Field.Fields.Append("Reserved", 3);
SPLF0200Field.Fields.Append("LengthOfData", 4);
//Loop through each entry in the list and get the field values by key
for (int currentEntry = 0; currentEntry < numberOfEntries; currentEntry++)
{
qusrtvusParms["StartingPosition"].Value = longConverter.ToBytes(offsetToData + (currentEntry * entrySize) + 1);
qusrtvusParms["Length"].Value = longConverter.ToBytes(entrySize);
qusrtvusParms["Receiver"].Length = entrySize;
qusrtvus.Call(qusrtvusParms);
sc2.Bytes = qusrtvusParms["APIError"].Value;
if (((string)stringConverter.FromBytes(sc2.Fields["messageid"].Value)).Trim().Length > 0)
{
//deal with error
return;
}
//According to the SPLF0200 format, the first 4-byte integer is the number of fields returned.
//After that, it's a variable list of key structures.
byte[] entry = qusrtvusParms["Receiver"].Value;
byte[] numberOfFieldsReturnedBytes = new byte[4];
Array.Copy(entry, 0, numberOfFieldsReturnedBytes, 0, 4);
int numberOfFieldsReturned = longConverter.FromBytes(numberOfFieldsReturnedBytes);
int lastBufferEnd = 4;
//Fields to hold the spooled file field elements. Note: In a production environment, I would normally
//create a class to hold all of this, but this is just for sample purposes.
String spooledFileName = "";
String userName = "";
String opqueue = "";
String userdata = "";
String status = "";
int totpages = 0;
int copies = 0;
String openeddate = "";
String opentime = "";
byte[] jobid = new byte[16];
byte[] fileid = new byte[16];
for (int currentField = 0; currentField < numberOfFieldsReturned; currentField++)
{
byte[] SPLF0200FieldBytes = new byte[SPLF0200Field.Length];
Array.Copy(entry, lastBufferEnd, SPLF0200FieldBytes, 0, SPLF0200FieldBytes.Length);
SPLF0200Field.Bytes = SPLF0200FieldBytes;
int fieldDataLength = longConverter.FromBytes(SPLF0200Field.Fields["LengthOfData"].Value);
int fieldInfoLength = longConverter.FromBytes(SPLF0200Field.Fields["LengthOfInformation"].Value);
int fieldKey = longConverter.FromBytes(SPLF0200Field.Fields["KeyField"].Value);
byte[] fieldDataBytes = new byte[fieldDataLength];
Array.Copy(entry, lastBufferEnd + 16, fieldDataBytes, 0, fieldDataLength);
lastBufferEnd = lastBufferEnd + fieldInfoLength;
switch (fieldKey) {
case 201:
spooledFileName = stringConverter.FromBytes(fieldDataBytes);
break;
case 203:
userName = stringConverter.FromBytes(fieldDataBytes);
break;
case 206:
opqueue = stringConverter.FromBytes(fieldDataBytes);
break;
case 209:
userdata = stringConverter.FromBytes(fieldDataBytes);
break;
case 210:
status = stringConverter.FromBytes(fieldDataBytes);
break;
case 211:
totpages = longConverter.FromBytes(fieldDataBytes);
break;
case 213:
copies = longConverter.FromBytes(fieldDataBytes);
break;
case 216:
openeddate = stringConverter.FromBytes(fieldDataBytes);
break;
case 217:
opentime = stringConverter.FromBytes(fieldDataBytes);
break;
case 218:
jobid = fieldDataBytes;
break;
case 219:
fileid = fieldDataBytes;
break;
}
}
//All field elements that the API returned (that we care about) are loaded.
//Now do something with the spooled file fields here.
}
//Delete the user space
cwbx.Program qusdltus = new cwbx.Program();
qusdltus.system = as400;
qusdltus.LibraryName = "QSYS";
qusdltus.ProgramName = "QUSDLTUS";
cwbx.ProgramParameters qusdltusParms = new cwbx.ProgramParameters();
qusdltusParms.Append("UserSpaceName", cwbrcParameterTypeEnum.cwbrcInput, 20).Value = stringConverter.ToBytes(userSpaceName);
qusdltusParms.Append("APIError", cwbrcParameterTypeEnum.cwbrcInout, sc2.Length).Value = sc2.Bytes;
qusdltus.Call(qusdltusParms);
sc2.Bytes = qusdltusParms["APIError"].Value;
if (((string)stringConverter.FromBytes(sc2.Fields["messageid"].Value)).Trim().Length > 0)
{
//deal with error
return;
}
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