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cellspacing="1" cellpadding="1" bgcolor="#000000"><tr bgcolor="#FFFFFF"><td width="100%" colspan="4" align="left"><table width="95%" align="center"><tr><td class="font1"><p align="center"><br><font size="3">用Delphi实现将纯文本资料转入数据库</font><br><span class="nava"><font color="#CC9933">2000-06-16· -·中国计算机报</font></span></p><p> 在我们日常工作中,常会碰到这样一个难题：一大堆收集好的纯文本格式,比较规整的资料怎样才能将它们分离,转到自己已经建好的数据库中进行管理呢？<br> <br> 例如,有一段人事档案资料archive.txt,内容如下：</p> <table width="69%" border="0" align="center" bgcolor="6699cc" cellspacing="1" cellpadding="0"> <tr bgcolor="#FFFFFF"> <td width="26%">小许</td> <td width="14%">男</td> <td width="18%">21</td> <td width="42%">工程师</td> </tr> <tr bgcolor="#FFFFFF"> <td width="26%">小吴</td> <td width="14%">女</td> <td width="18%">23</td> <td width="42%">助理工程师</td> </tr> <tr bgcolor="#FFFFFF"> <td width="26%">小蔡</td> <td width="14%">男</td> <td width="18%">22</td> <td width="42%">助理工程师</td> </tr> <tr bgcolor="#FFFFFF"> <td width="26%">小牟</td> <td width="14%">女</td> <td width="18%">22</td> <td width="42%">工程师</td> </tr> </table> <p> 要将它转入数据库archive.dbf中,archive.dbf结构如下：<br> 姓名,性别,年龄,职称<br> <br> 怎么办呢？现在通过使用delphi编程,很好地解决了这个难题。Delphi提供了许多功能强大,丰富的字符处理函数和过程,常用的有：<br> (1)function Length(S：String)：Integer返回串的长度<br> (2)function Copy(S：String;Index,Count：Integer)：String 给出一个字符串中串的拷贝<br> (3)function Pos(Substr：String;S：String);Integer 查找子串在字符串中的位置<br> (4)Procedure Delete(VarS：String;Index,Count：Integer);从一个字符串中去除子串<br> <br> 利用Delphi提供的已有函数和过程基础上编制自己的三个函数,实现了纯文本格式资料转入数据库功能。只要Delphi支持的数据库都可以支持。<br> <br> archive.txt中每行数据为一个字符串,字符串中每个被分割的数据为一个字段,分割每个字段的字符为分割符,这里是空格,也可以是,、;、＃等符号。具体思想是：先将字符串进行调整,然后把串中每个字符同分割符比较,将不是分割符的字符追加到MyStr串中,最后得到一个字段的内容。通过一个循环,就可以将一个字符串分成几个字段。<br> <br> Function Regulate(aString,Sepchar：string)：string 去掉多余的分割符,规范字符串<br> Function GetSubStr(varsString：string;SepChar：String)：String;得到字符串中一个子串,因要改变参数aString的值,所以将它用var定义。<br> FunctionGetSubStrNum(aString,SepChar：String)：Integer;计算一个字符串要被分割成几个字段。<br> 参数：aString是所需分割的一个字符串,SepChar是分割符。<br> <br> Function RegulateStr(aString：String;Sepchar：String)：String; <br> var<br> i,Num：Integer;<br> Flag：Boolean;<br> MyStr,TempStr：String;<br> begin<br> Flag:=False;进行标志,去除多余的分割符<br> Num:=Length(aString); 计算aString串的长度<br> for i:=1 to Num do<br> begin<br> TempStr:=Copy(aString,i,1);取aString串中的一字符<br> if TempStr SepChar then<br> begin<br> MyStr:=MyStr+TempStr;<br> Flag:=True;<br> end<br> else<br> if(Flag = True)then<br> begin<br> Mystr:=Mystr+TempSrt;<br> Flag:=False;<br> end;<br> end;<br> if MyStr[Length(MyStr)] SepChar then<br> MyStr:=MyStr+SepChar;<br>⌨️ 快捷键说明
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