-
Notifications
You must be signed in to change notification settings - Fork 3
/
WebCode.cls
461 lines (410 loc) · 12 KB
/
WebCode.cls
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
VERSION 1.0 CLASS
BEGIN
MultiUse = -1 'True
Persistable = 0 'NotPersistable
DataBindingBehavior = 0 'vbNone
DataSourceBehavior = 0 'vbNone
MTSTransactionMode = 0 'NotAnMTSObject
END
Attribute VB_Name = "WebCode"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Private Declare Function WideCharToMultiByte Lib "kernel32" (ByVal CodePage As Long, ByVal dwFlags As Long, ByVal lpWideCharStr As Long, ByVal cchWideChar As Long, ByRef lpMultiByteStr As Any, ByVal cchMultiByte As Long, ByVal lpDefaultChar As String, ByVal lpUsedDefaultChar As Long) As Long
Private WithEvents req As WinHttp.WinHttpRequest
Attribute req.VB_VarHelpID = -1
Private canGet As Boolean
Private mTimeOut As Long
Private Const MIN_TIME_OUT = 10
Private Const MAX_TIME_OUT = 120
Private Const TIME_OUT_STEP = 10
'调整大小
Private Sub mShorterTimeOut()
mTimeOut = mTimeOut - TIME_OUT_STEP
If mTimeOut <= MIN_TIME_OUT Then
mTimeOut = MIN_TIME_OUT
End If
End Sub
Private Sub mLongerTimeOut()
mTimeOut = mTimeOut + TIME_OUT_STEP
If mTimeOut >= MAX_TIME_OUT Then
mTimeOut = MIN_TIME_OUT
End If
End Sub
'说明:此代码类模块用于获取网页的源代码
Private Function getHtmlStrGB(ByVal strURL As String) As String '获取源码
DoEvents
Dim stime As Date, ntime As Date
Dim XmlHttp As Variant
'"获取网页源码"
Set XmlHttp = CreateObject("Microsoft.XMLHTTP")
XmlHttp.Open "GET", strURL, True
XmlHttp.SetRequestHeader "If-Modified-Since", "0"
XmlHttp.Send
stime = Now '获取当前时间
While XmlHttp.readyState <> 4
DoEvents
ntime = Now '获取循环时间
If DateDiff("s", stime, ntime) > mTimeOut Then
Call mLongerTimeOut
Err.Raise 10001, , "[SunSoft]连接超时"
End If
Wend
If Not mIsStatusOK(XmlHttp.status) Then
Err.Raise 10002, , "[SunSoft]连接错误"
End If
Call mShorterTimeOut
getHtmlStrGB = StrConv(XmlHttp.ResponseBody, vbUnicode)
Set XmlHttp = Nothing
DoEvents
End Function
Private Function Utf8ToUnicode(ByRef Utf() As Byte) As String
Dim utfLen As Long
utfLen = -1
On Error Resume Next
utfLen = UBound(Utf)
If utfLen = -1 Then Exit Function
On Error GoTo 0
Dim i As Long, j As Long, k As Long, N As Long
Dim B As Byte, cnt As Byte
Dim Buf() As String
ReDim Buf(utfLen)
i = 0
j = 0
Do While i <= utfLen
B = Utf(i)
If (B And &HFC) = &HFC Then
cnt = 6
ElseIf (B And &HF8) = &HF8 Then
cnt = 5
ElseIf (B And &HF0) = &HF0 Then
cnt = 4
ElseIf (B And &HE0) = &HE0 Then
cnt = 3
ElseIf (B And &HC0) = &HC0 Then
cnt = 2
Else
cnt = 1
End If
If i + cnt - 1 > utfLen Then
Buf(j) = "?"
Exit Do
End If
Select Case cnt
Case 2
N = B And &H1F
Case 3
N = B And &HF
Case 4
N = B And &H7
Case 5
N = B And &H3
Case 6
N = B And &H1
Case Else
Buf(j) = Chr(B)
GoTo Continued:
End Select
For k = 1 To cnt - 1
B = Utf(i + k)
N = N * &H40 + (B And &H3F)
Next
If N < -32768 Or N > 65535 Then
Buf(j) = "?"
Else
Buf(j) = ChrW(N)
End If
Continued:
i = i + cnt
j = j + 1
Loop
Utf8ToUnicode = Join(Buf, "")
End Function
Public Function Post(ByVal url As String, ByVal data As String) As String
On Error Resume Next
DoEvents
Dim stime As Date, ntime As Date
Dim XmlHttp As Variant
'"获取网页源码"
Set XmlHttp = CreateObject("Microsoft.XMLHTTP")
XmlHttp.Open "POST", url, True
XmlHttp.SetRequestHeader "If-Modified-Since", "0"
XmlHttp.SetRequestHeader "Content-Type", "application/x-www-form-urlencoded"
XmlHttp.Send data
stime = Now '获取当前时间
While XmlHttp.readyState <> 4
DoEvents
ntime = Now '获取循环时间
If DateDiff("s", stime, ntime) > mTimeOut Then
Call mLongerTimeOut
Err.Raise 10001, , "[SunSoft]连接超时"
End If
Wend
If Not mIsStatusOK(XmlHttp.status) Then
Err.Raise 10002, , "[SunSoft]连接错误"
End If
Call mShorterTimeOut
Post = StrConv(XmlHttp.ResponseBody, vbUnicode)
Set XmlHttp = Nothing
DoEvents
End Function
Private Function getHtmlStrUTF(ByVal strURL As String) As String '获取源码
Dim smt() As Byte
DoEvents
Dim stime, ntime
Dim XmlHttp
' St "获取网页源码"
Set XmlHttp = CreateObject("Microsoft.XMLHTTP")
XmlHttp.Open "GET", strURL, True
XmlHttp.SetRequestHeader "If-Modified-Since", "0"
XmlHttp.Send
stime = Now '获取当前时间
While XmlHttp.readyState <> 4
DoEvents
ntime = Now '获取循环时间
If DateDiff("s", stime, ntime) > mTimeOut Then
Call mLongerTimeOut
Err.Raise 10001, , "[SunSoft]连接超时"
End If
DoEvents
Wend
If Not mIsStatusOK(XmlHttp.status) Then
Err.Raise 10002, , "[SunSoft]连接错误"
End If
Call mShorterTimeOut
If LenB(XmlHttp.ResponseBody) > 0 Then
smt = XmlHttp.ResponseBody
Else
getHtmlStrUTF = ""
Exit Function
End If
getHtmlStrUTF = Utf8ToUnicode(smt)
Set XmlHttp = Nothing
DoEvents
Exit Function
End Function
Private Function mIsStatusOK(ByVal status As Long) As Boolean
Select Case status
Case 200, 201, 202
mIsStatusOK = True
Case Else
mIsStatusOK = False
End Select
End Function
Public Function GetHTMLCode(ByVal url As String, Optional ByVal charset As String = "gb2312") As String
Dim code As String
Select Case charset
Case "gb2312"
code = getHtmlStrGB(url)
Case "utf-8"
code = getHtmlStrUTF(url)
Case "smart"
code = getHtmlStrGB(url)
code = Trim(code)
code = LCase(code)
If Abs(InStr(1, code, "charset") - InStr(1, code, "utf-8")) < 10 Then
code = getHtmlStrUTF(url)
End If
End Select
GetHTMLCode = code
End Function
Public Function GetHttpCode(ByVal url As String, Optional ByVal charset As String = "gb2312") As String
Dim code As String
Select Case charset
Case "gb2312"
code = GetHttpCodeGB(url)
Case "utf-8"
code = GetHttpCodeUTF(url)
Case "smart"
code = GetHttpCodeGB(url)
code = Trim(code)
code = LCase(code)
If Abs(InStr(1, code, "charset") - InStr(1, code, "utf-8")) < 10 Then
code = GetHttpCodeUTF(url)
End If
End Select
GetHttpCode = code
End Function
Public Function GetHttpCodeUTF(ByVal url As String) As String
Dim smt() As Byte
Dim stime As Date, ntime As Date
redo:
Set req = New WinHttp.WinHttpRequest
req.Open "GET", url, True
req.SetRequestHeader "If-Modified-Since", "0"
req.SetRequestHeader "User-Agent", "Mozilla/6.0"
req.Send
If req Is Nothing Then
GoTo redo
End If
stime = Now '获取当前时间
canGet = False
While canGet = False
DoEvents
ntime = Now '获取循环时间
If DateDiff("s", stime, ntime) > mTimeOut Then
Call mLongerTimeOut
Err.Raise 10001, , "[SunSoft]连接超时"
End If
Wend
If req Is Nothing Then
GoTo redo
End If
If Not mIsStatusOK(req.status) Then
Err.Raise 10002, , "[SunSoft]连接错误"
End If
Call mShorterTimeOut
If LenB(req.ResponseBody) > 0 Then
smt = req.ResponseBody
Else
GetHttpCodeUTF = ""
Exit Function
End If
GetHttpCodeUTF = Utf8ToUnicode(smt)
Set req = Nothing
End Function
Public Function GetHttpCodeGB(ByVal url As String) As String
Dim stime As Date, ntime As Date
redo:
Set req = New WinHttp.WinHttpRequest
req.Open "GET", url, True
req.SetRequestHeader "If-Modified-Since", "0"
req.SetRequestHeader "User-Agent", "Mozilla/6.0"
req.Send
If req Is Nothing Then
GoTo redo
End If
stime = Now '获取当前时间
canGet = False
While canGet = False
DoEvents
ntime = Now '获取循环时间
If DateDiff("s", stime, ntime) > mTimeOut Then
Call mLongerTimeOut
Err.Raise 10001, , "[SunSoft]连接超时"
End If
Wend
If req Is Nothing Then
GoTo redo
End If
If Not mIsStatusOK(req.status) Then
Err.Raise 10002, , "[SunSoft]连接错误"
End If
Call mShorterTimeOut
If LenB(req.ResponseBody) > 0 Then
GetHttpCodeGB = StrConv(req.ResponseBody, vbUnicode)
Else
GetHttpCodeGB = ""
End If
Set req = Nothing
End Function
Private Sub Class_Initialize()
canGet = False
mTimeOut = MIN_TIME_OUT
End Sub
Private Sub req_OnResponseFinished()
canGet = True
End Sub
Public Function URLEncode(ByVal strParameter As String) As String
Dim s As String
Dim i As Integer
Dim intValue As Integer
Dim TmpData() As Byte
s = ""
TmpData = StrConv(strParameter, vbFromUnicode)
For i = 0 To UBound(TmpData)
intValue = TmpData(i)
If (intValue >= 48 And intValue <= 57) Or _
(intValue >= 65 And intValue <= 90) Or _
(intValue >= 97 And intValue <= 122) Then
s = s & Chr(intValue)
ElseIf intValue = 32 Then
s = s & "+"
Else
s = s & "%" & Hex(intValue)
End If
Next i
URLEncode = s
End Function
Public Function Utf8UrlEncode(ByVal text As String) As String
Dim utf8Code As String
utf8Code = UnicodeToUtf8(text)
Utf8UrlEncode = URLEncode(utf8Code)
End Function
Public Function UnicodeToUtf8(ByVal UCS As String) As Byte()
Dim lLength As Long
Dim lBufferSize As Long
Dim lResult As Long
Dim abUTF8() As Byte
lLength = Len(UCS)
If lLength = 0 Then Exit Function
lBufferSize = lLength * 3 + 1
ReDim abUTF8(lBufferSize - 1)
lResult = WideCharToMultiByte(CP_UTF8, 0, StrPtr(UCS), lLength, abUTF8(0), lBufferSize, vbNullString, 0)
If lResult <> 0 Then
lResult = lResult - 1
ReDim Preserve abUTF8(lResult)
UnicodeToUtf8 = abUTF8
End If
End Function
Public Function UTF8_URLEncoding(ByVal szInput As String)
Dim wch As String, uch As String, szRet As String
Dim x As Long
Dim nAsc As Long, nAsc2 As Long, nAsc3 As Long
If szInput = "" Then
UTF8_URLEncoding = szInput
Exit Function
End If
For x = 1 To Len(szInput)
wch = Mid(szInput, x, 1)
nAsc = AscW(wch)
If nAsc < 0 Then nAsc = nAsc + 65536
If (nAsc And &HFF80) = 0 Then
szRet = szRet & wch
Else
If (nAsc And &HF000) = 0 Then
uch = "%" & Hex(((nAsc \ 2 ^ 6)) Or &HC0) & Hex(nAsc And &H3F Or &H80)
szRet = szRet & uch
Else
uch = "%" & Hex((nAsc \ 2 ^ 12) Or &HE0) & "%" & _
Hex((nAsc \ 2 ^ 6) And &H3F Or &H80) & "%" & _
Hex(nAsc And &H3F Or &H80)
szRet = szRet & uch
End If
End If
Next
UTF8_URLEncoding = szRet
End Function
Public Function UTF8_UrlDecode(ByVal url As String)
Dim SingleWord As String, UtfBStr As String ''中文字的Unicode码(2字节)
Dim UtfB As Byte ''Utf-8单个字节
Dim UtfB1 As Long, UtfB2 As Long, UtfB3 As Long ''Utf-8码的三个字节
Dim i As Long, OriginUrl As String
For i = 1 To Len(url)
SingleWord = Mid(url, i, 1)
Select Case SingleWord
Case "+"
OriginUrl = OriginUrl & " "
Case "%"
UtfBStr = Mid(url, i + 1, 2)
UtfB = CInt("&H" & UtfBStr)
If UtfB < 128 Then
i = i + 2
OriginUrl = OriginUrl & ChrW(UtfB)
Else
UtfB1 = CLng(UtfB And &HF) * &H1000 ''取第1个Utf-8字节的二进制后4位
UtfB2 = (CInt("&H" & Mid(url, i + 4, 2)) And &H3F) * &H40 ''取第2个Utf-8字节的二进制后6位
UtfB3 = CInt("&H" & Mid(url, i + 7, 2)) And &H3F ''取第3个Utf-8字节的二进制后6位
OriginUrl = OriginUrl & ChrW(UtfB1 Or UtfB2 Or UtfB3)
i = i + 8
End If
Case Else ''Ascii码
OriginUrl = OriginUrl & SingleWord
End Select
Next
UTF8_UrlDecode = OriginUrl
End Function
Public Property Get TimeOut() As Variant
TimeOut = mTimeOut
End Property