找不到Collection类定义 - VFP论坛

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已结贴√ 问题点数：20 回复次数：14

找不到Collection类定义

大侠们好，我在做邮件自动接收、下载程序，使用了木瓜的Mytools，调用了流星雨的邮件解码程序，但是在执行 AddProperty(This,"Contents",NewObject("Collection"))语句时报错，请帮忙啊！

搜索更多相关主题的帖子: 找不到　 Collection　定义　邮件　 This　

第 2 楼

得分:0

我用的是vfp6.0
再：还有没有其他自动下载邮件的方法？请帮忙！

第 3 楼

得分:10

这句是在当前对象创建或设置Contents属性的值为一个Collection类实例对象。
可能是找不到Collection类的定义，NewObject("Collection")执行失败。
参考VFP帮助 NewObject() 的使用说明。

第 4 楼

得分:0

谢谢斑竹！

这个类是什么类？用途是什么？怎样建立？

下面是木瓜和流星雨的源码，请您看看，帮忙分析一下：

Set Library To myfll
hPop3=Pop3Create("pop.,"帐号","密码")
If hPop3==""
    MessageBox("无法连接服务器")
    Return
EndIf

nCount=Pop3AMailList(hPop3,"aMail")  &&邮件个数

If nCount<0
    ?"无法取得邮件信息"
    Pop3Close(hPop3)
    Return
EndIf

For x=1 to 2  &&把2改成nCount可以下载每一封邮件

    cMailBody=Pop3GetMail(hPop3,aMail[x,1])   &&下载邮件

    * StrToFile(cMailBody,"mail"+Transform(x)+".eml")  &&把邮件保存到磁盘

    *下面这段代码，使用网友流星雨写的解码程序，对邮件进行解码
    oMail =  NEWOBJECT('Mail')
    oMail.LoadEML(cMailBody)   &&这里解析邮件

    ?'发件人:',oMail.Sender
    ?'收件人:',oMail.Recever
    ?'抄送:',oMail.CC
    ?'发件日期:',oMail.SendDateTime
    ?'邮件主题:',oMail.Subject
    ?'附件数量:',oMail.Contents.Count
    *?'邮件正文:',oMail.BodyText
    *?'邮件HTML正文:',oMail.BodyHtml
    FOR i = 1 TO oMail.Contents.Count  &&遍历每一个附件
        ?'第',ALLTRIM(STR(i)),'个附件名称:',oMail.Contents(i).Name
        ?'文件内容在oMail.Contents(',ALLTRIM(STR(i)),').Value中'
    ENDFOR
EndFor

Pop3Close(hPop3)

Set Library To

*-------------------------------------------------------------------------------
*类    名：Mail
*功　　能：对邮件进行解码
*作　　者：流星雨
*备　　注：
*-------------------------------------------------------------------------------

DEFINE CLASS 'Mail' AS Custom
    Mail = ""
    Subject = "" &&主题

    Recever = "" &&收件人

    Cc = "" &&抄送

    Sender = "" &&发件人

    SendDateTime = "" &&发送时间

    BodyText = "" &&文本正文

    BodyHtml = "" &&HTML正文

*----------------------------------------
    PROCEDURE LoadEML    &&加载邮件

    LPARAMETERS cMail,lMailType
    *参数:cMail 字符串形式邮件或文件形式邮件
    *参数:lMailType 0 字符串形式 1文件形式此参数可省略,默认为0
    IF VARTYPE(lMailType)="L" OR lMailType = 0
        This.Mail = cMail
        RELEASE cMail
    ELSE
        IF FILE(cMail,1) AND JUSTEXT(cMail) = "EML"
            This.Mail = FILETOSTR(cMail)
        ELSE
            MESSAGEBOX('文件不存在或格式不对',48,'错误')
            RETURN
        ENDIF
    ENDIF
    AddProperty(This,"Contents",NewObject("Collection"))
    *--------------发件人
    This.Sender = This.Decode(CHRTRAN(STREXTRACT(This.Mail,CHR(10)+'From:',CHR(13)),'"',''))
    *--------------收件人
    This.Recever = STREXTRACT(This.Mail,CHR(10)+'To:',':')
    This.Recever = SUBSTR(This.Recever,1,RAT(CHR(13),This.Recever)-1)
    This.Recever = This.Decode(This.Recever)
    *--------------抄送
    This.Cc = STREXTRACT(This.Mail,CHR(10)+'Cc:',':')
    This.Cc = SUBSTR(This.Cc ,1,RAT(CHR(13),This.Cc)-1)
    This.Cc = This.Decode(CHRTRAN(This.Cc,CHR(13)+CHR(10),''))
    *--------------发送日期,格式我没有转换,偷个小懒:)
    This.SendDateTime = STREXTRACT(This.Mail,CHR(10)+'Date: ',CHR(13)) &&

    This.SendDateTime = STREXTRACT(This.SendDateTime,', ',' +')
    *--------------邮件主题
    This.Subject = STREXTRACT(This.Mail,CHR(10)+'Subject:',CHR(13))
    DO WHILE .T.    &&防止多行主题,主题明明是一段话却编码成两行,可能是因为有换行符号CHR(10)存在,不知道怎么会允许这种情况存在

        IF SUBSTR(This.Mail,AT(This.Subject+CHR(13),This.Mail)+LEN(This.Subject)+2,1) = "    "
            This.Subject = This.Subject +CHR(13)+CHR(10)+ STREXTRACT(This.Mail,This.Subject+CHR(13),CHR(13))
        ELSE
            EXIT
        ENDIF
    ENDDO
    *lcCharacter = SUBSTR(lcCharacter,1,RAT(CHR(13),lcCharacter)-1)
    This.Subject = This.Decode(This.Subject)

    *--------------邮件内容及附件
    LOCAL lcBoundary,lcBoundary1,lcCharacter,i,ii
    lcBoundary = "--"+CHRTRAN(STREXTRACT(This.Mail,'boundary=',CHR(13)),'";','')
    FOR i = 1 TO OCCURS(lcBoundary,This.Mail)-1
        lcCharacter = STREXTRACT(This.Mail,lcBoundary,lcBoundary,i)
        cBoundary = CHRTRAN(STREXTRACT(lcCharacter,'boundary=',CHR(13)),'";','')
        IF !EMPTY(cBoundary)
            cBoundary = '--' + cBoundary
            FOR ii = 1 TO OCCURS(cBoundary,lcCharacter)-1
                This.AddContent(STREXTRACT(This.Mail,cBoundary,cBoundary,ii))
            ENDFOR
        ELSE
            This.AddContent(lcCharacter)
        ENDIF
    ENDFOR
*----------------------------------------
    PROCEDURE Decode &&解码

    LPARAMETERS cText
        LOCAL lcStr,lcCharacter,cSaveText,cTempStr,si
        If not ( "=?"$cText and  "?=" $ cText)
            Return cText  &&这种不带编码的，直接返回

        EndIf
        cSaveTest = cText
        cText = cText + IIF(RIGHT(cText,1) = '=',CHR(13),'')
        FOR si = 1 TO OCCURS('=?',cText)
            lcStr = STREXTRACT(CHR(13)+CHR(10)+cText+CHR(13)+CHR(10),CHR(13)+CHR(10),CHR(13)+CHR(10),si)
            DO CASE
            CASE '?Q?'$lcStr    &"ed-printable编码例:Re:=B9=D8=D3=DAMYFLL

                lcCharacter = STREXTRACT(lcStr+'?','?Q?','?')
                cSaveTest = STRTRAN(cSaveTest,"=?"+STREXTRACT(lcStr,'=?','?Q')+'?Q?'+lcCharacter+"?=",QPDecode(lcCharacter))
            CASE '?B?'$cText    &&base64编码

                lcCharacter = STREXTRACT(lcStr+'?','?B?','?')
                cSaveTest = STRTRAN(cSaveTest,"=?"+STREXTRACT(lcStr,'=?','?B')+'?B?'+lcCharacter+"?=",STRCONV(lcCharacter,14))
            ENDCASE
        ENDFOR
        *RETURN CHRTRAN(cSaveTest,'    " '+CHR(13)+CHR(10),'')
        RETURN CHRTRAN(cSaveTest,CHR(13)+CHR(10),'')
    ENDPROC
*----------------------------------------
    PROCEDURE AddContent
    LPARAMETERS cContent,cArrayMail
    LOCAL cType
    cType = STREXTRACT(cContent,'Content-Type: ',';')
    DO CASE
    CASE cType = 'text/plain' &&正文

        This.BodyText = SUBSTR(cContent,AT(CHR(13)+CHR(10)+CHR(13)+CHR(10),cContent)+4,LEN(cContent))
        DO CASE
        CASE CHR(10)+'Content-Transfer-Encoding: base64'$cContent
            This.BodyText = STRCONV(This.BodyText,14)
        CASE CHR(10)+'Content-Transfer-Encoding: quoted-printable'$cContent
            This.BodyText = QPDecode(This.BodyText)
        ENDCASE
    CASE cType = 'text/html' &&HTML正文

        This.BodyHtml = SUBSTR(cContent,AT(CHR(13)+CHR(10)+CHR(13)+CHR(10),cContent)+4,LEN(cContent))
        DO CASE
        CASE CHR(10)+'Content-Transfer-Encoding: base64'$cContent
            This.BodyHtml = STRCONV(This.BodyHtml,14)
        CASE CHR(10)+'Content-Transfer-Encoding: quoted-printable'$cContent
            This.BodyHtml = QPDecode(This.BodyHtml)
        ENDCASE
    OTHERWISE    &&附件,其实真正的附件应该为application/格式,这里将非正文的内容都作为附件了,像HTML格式中的图片其实可以过滤,在查看HTML邮件时才有用

        oItem=NewObject("empty")
        AddProperty(oItem,"Name",This.Decode(CHRTRAN(STREXTRACT(cContent,'name=',CHR(13)),'";','')))
        AddProperty(oItem,"Value",STRCONV(SUBSTR(cContent,AT(CHR(13)+CHR(10)+CHR(13)+CHR(10),cContent)+4,LEN(cContent)),14))
        This.Contents.Add(oItem)
    ENDCASE
*----------------------------------------
ENDDEFINE

第 5 楼

得分:5

以下是引用kim_wei在2017-9-13 14:42:15的发言：

我用的是vfp6.0

vfp6好象没有AddProperty()
用AddProperty方法试试：
this.AddProperty("Contents",NewObject("Collection"))

第 6 楼

得分:0

还是出现同样的错误提示，是不是我现在缺少Collection类啊？

第 7 楼

得分:5

以下是引用kim_wei在2017-9-13 15:43:45的发言：

还是出现同样的错误提示，是不是我现在缺少Collection类啊？

看看 NewObject("Collection") 执行结果，有无载入Collection类的类库？

第 8 楼

得分:0

执行了一下，还是出现同样的错误提示。

第 9 楼

得分:0

斑竹，不知道您有没有时间，可以把上面的源代码运行一下吗？
我是这样做的，不知道对不对？

1、新建个表单，建一个命令按钮，在click中输入：

set proc to 程序1

Set Library To myfll
hPop3=Pop3Create("pop.,"帐号","密码")        &&密码、帐号都改成我自己的
If hPop3==""
    MessageBox("无法连接服务器")
    Return
EndIf

nCount=Pop3AMailList(hPop3,"aMail")  &&邮件个数

If nCount<0
    ?"无法取得邮件信息"
    Pop3Close(hPop3)
    Return
EndIf

For x=1 to 2  &&把2改成nCount可以下载每一封邮件

    cMailBody=Pop3GetMail(hPop3,aMail[x,1])   &&下载邮件

    * StrToFile(cMailBody,"mail"+Transform(x)+".eml")  &&把邮件保存到磁盘

    *下面这段代码，使用网友流星雨写的解码程序，对邮件进行解码
    oMail =  NEWOBJECT('Mail')
    oMail.LoadEML(cMailBody)   &&这里解析邮件

    ?'发件人:',oMail.Sender
    ?'收件人:',oMail.Recever
    ?'抄送:',oMail.CC
    ?'发件日期:',oMail.SendDateTime
    ?'邮件主题:',oMail.Subject
    ?'附件数量:',oMail.Contents.Count
    *?'邮件正文:',oMail.BodyText
    *?'邮件HTML正文:',oMail.BodyHtml
    FOR i = 1 TO oMail.Contents.Count  &&遍历每一个附件
        ?'第',ALLTRIM(STR(i)),'个附件名称:',oMail.Contents(i).Name
        ?'文件内容在oMail.Contents(',ALLTRIM(STR(i)),').Value中'
    ENDFOR
EndFor

Pop3Close(hPop3)

Set Library To

MyFll.rar (318.97 KB)

[此贴子已经被作者于2017-9-13 16:41编辑过]

第 10 楼

得分:0

2、再建一个prg文件，名称为“程序1”，内容为：

*-------------------------------------------------------------------------------
*类    名：Mail
*功　　能：对邮件进行解码
*作　　者：流星雨
*备　　注：
*-------------------------------------------------------------------------------

DEFINE CLASS 'Mail' AS Custom
    Mail = ""
    Subject = "" &&主题

    Recever = "" &&收件人

    Cc = "" &&抄送

    Sender = "" &&发件人

    SendDateTime = "" &&发送时间

    BodyText = "" &&文本正文

    BodyHtml = "" &&HTML正文

*----------------------------------------
    PROCEDURE LoadEML    &&加载邮件

    LPARAMETERS cMail,lMailType
    *参数:cMail 字符串形式邮件或文件形式邮件
    *参数:lMailType 0 字符串形式 1文件形式此参数可省略,默认为0
    IF VARTYPE(lMailType)="L" OR lMailType = 0
        This.Mail = cMail
        RELEASE cMail
    ELSE
        IF FILE(cMail) AND JUSTEXT(cMail) = "EML"
            This.Mail = FILETOSTR(cMail)
        ELSE
            MESSAGEBOX('文件不存在或格式不对',48,'错误')
            RETURN
        ENDIF
    ENDIF
    AddProperty(This,"Contents",NewObject("Collection"))
    *--------------发件人
    This.Sender = This.Decode(CHRTRAN(STREXTRACT(This.Mail,CHR(10)+'From:',CHR(13)),'"',''))
    *--------------收件人
    This.Recever = STREXTRACT(This.Mail,CHR(10)+'To:',':')
    This.Recever = SUBSTR(This.Recever,1,RAT(CHR(13),This.Recever)-1)
    This.Recever = This.Decode(This.Recever)
    *--------------抄送
    This.Cc = STREXTRACT(This.Mail,CHR(10)+'Cc:',':')
    This.Cc = SUBSTR(This.Cc ,1,RAT(CHR(13),This.Cc)-1)
    This.Cc = This.Decode(CHRTRAN(This.Cc,CHR(13)+CHR(10),''))
    *--------------发送日期,格式我没有转换,偷个小懒:)
    This.SendDateTime = STREXTRACT(This.Mail,CHR(10)+'Date: ',CHR(13)) &&

    This.SendDateTime = STREXTRACT(This.SendDateTime,', ',' +')
    *--------------邮件主题
    This.Subject = STREXTRACT(This.Mail,CHR(10)+'Subject:',CHR(13))
    DO WHILE .T.    &&防止多行主题,主题明明是一段话却编码成两行,可能是因为有换行符号CHR(10)存在,不知道怎么会允许这种情况存在

        IF SUBSTR(This.Mail,AT(This.Subject+CHR(13),This.Mail)+LEN(This.Subject)+2,1) = "    "
            This.Subject = This.Subject +CHR(13)+CHR(10)+ STREXTRACT(This.Mail,This.Subject+CHR(13),CHR(13))
        ELSE
            EXIT
        ENDIF
    ENDDO
    *lcCharacter = SUBSTR(lcCharacter,1,RAT(CHR(13),lcCharacter)-1)
    This.Subject = This.Decode(This.Subject)

    *--------------邮件内容及附件
    LOCAL lcBoundary,lcBoundary1,lcCharacter,i,ii
    lcBoundary = "--"+CHRTRAN(STREXTRACT(This.Mail,'boundary=',CHR(13)),'";','')
    FOR i = 1 TO OCCURS(lcBoundary,This.Mail)-1
        lcCharacter = STREXTRACT(This.Mail,lcBoundary,lcBoundary,i)
        cBoundary = CHRTRAN(STREXTRACT(lcCharacter,'boundary=',CHR(13)),'";','')
        IF !EMPTY(cBoundary)
            cBoundary = '--' + cBoundary
            FOR ii = 1 TO OCCURS(cBoundary,lcCharacter)-1
                This.AddContent(STREXTRACT(This.Mail,cBoundary,cBoundary,ii))
            ENDFOR
        ELSE
            This.AddContent(lcCharacter)
        ENDIF
    ENDFOR
*----------------------------------------
    PROCEDURE Decode &&解码

    LPARAMETERS cText
        LOCAL lcStr,lcCharacter,cSaveText,cTempStr,si
        If not ( "=?"$cText and  "?=" $ cText)
            Return cText  &&这种不带编码的，直接返回

        EndIf
        cSaveTest = cText
        cText = cText + IIF(RIGHT(cText,1) = '=',CHR(13),'')
        FOR si = 1 TO OCCURS('=?',cText)
            lcStr = STREXTRACT(CHR(13)+CHR(10)+cText+CHR(13)+CHR(10),CHR(13)+CHR(10),CHR(13)+CHR(10),si)
            DO CASE
            CASE '?Q?'$lcStr    &&"ed-printable编码例:Re:=B9=D8=D3=DAMYFLL

                lcCharacter = STREXTRACT(lcStr+'?','?Q?','?')
                cSaveTest = STRTRAN(cSaveTest,"=?"+STREXTRACT(lcStr,'=?','?Q')+'?Q?'+lcCharacter+"?=",QPDecode(lcCharacter))
            CASE '?B?'$cText    &&base64编码

                lcCharacter = STREXTRACT(lcStr+'?','?B?','?')
                cSaveTest = STRTRAN(cSaveTest,"=?"+STREXTRACT(lcStr,'=?','?B')+'?B?'+lcCharacter+"?=",STRCONV(lcCharacter,14))
            ENDCASE
        ENDFOR
        *RETURN CHRTRAN(cSaveTest,'    " '+CHR(13)+CHR(10),'')
        RETURN CHRTRAN(cSaveTest,CHR(13)+CHR(10),'')
    ENDPROC
*----------------------------------------
    PROCEDURE AddContent
    LPARAMETERS cContent,cArrayMail
    LOCAL cType
    cType = STREXTRACT(cContent,'Content-Type: ',';')
    DO CASE
    CASE cType = 'text/plain' &&正文

        This.BodyText = SUBSTR(cContent,AT(CHR(13)+CHR(10)+CHR(13)+CHR(10),cContent)+4,LEN(cContent))
        DO CASE
        CASE CHR(10)+'Content-Transfer-Encoding: base64'$cContent
            This.BodyText = STRCONV(This.BodyText,14)
        CASE CHR(10)+'Content-Transfer-Encoding: quoted-printable'$cContent
            This.BodyText = QPDecode(This.BodyText)
        ENDCASE
    CASE cType = 'text/html' &&HTML正文

        This.BodyHtml = SUBSTR(cContent,AT(CHR(13)+CHR(10)+CHR(13)+CHR(10),cContent)+4,LEN(cContent))
        DO CASE
        CASE CHR(10)+'Content-Transfer-Encoding: base64'$cContent
            This.BodyHtml = STRCONV(This.BodyHtml,14)
        CASE CHR(10)+'Content-Transfer-Encoding: quoted-printable'$cContent
            This.BodyHtml = QPDecode(This.BodyHtml)
        ENDCASE
    OTHERWISE    &&附件,其实真正的附件应该为application/格式,这里将非正文的内容都作为附件了,像HTML格式中的图片其实可以过滤,在查看HTML邮件时才有用

        oItem=NewObject("empty")
        AddProperty(oItem,"Name",This.Decode(CHRTRAN(STREXTRACT(cContent,'name=',CHR(13)),'";','')))
        AddProperty(oItem,"Value",STRCONV(SUBSTR(cContent,AT(CHR(13)+CHR(10)+CHR(13)+CHR(10),cContent)+4,LEN(cContent)),14))
        This.Contents.Add(oItem)
    ENDCASE
*----------------------------------------
ENDDEFINE