📄 jsp中读文件和写文件的例子.htm
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<td bgcolor="#666666"><font color="#333333"><strong><font color="#FFFFFF">相关文章链接</font></strong></font><font color="#FFFFFF"> </font></td>
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<a href="20080213.html" target=_blank>在JSP中写text文件</a> [2004-06-03]<br><a href="2008013.html" target=_blank>jsp文件操作之读取篇</a> [2007-01-03]<br><a href="2008014.html" target=_blank>jsp文件操作之写入篇</a> [2004-01-15]<br><a href="2008015.html" target=_blank>jsp文件操作之追加篇</a> [2004-01-15]<br><a href="20080266.html" target=_blank>java读取配置文件例子</a> [2004-09-21]<br><a href="20080267.html" target=_blank>一个读取文件和子目录列表的程序</a> [2004-09-21]<br><a href="20080268.html" target=_blank>JSP文件操作</a> [2004-09-21]<br><a href="13004003160.html" target=_blank>JSP生成验证码源程序</a> [2005-04-11]<br></table></td>
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<td height="36" align="center" valign="middle" bgcolor="#FFFFFF" style="word-break:break-all" class="title"><strong>JSP中读文件和写文件的例子</strong></td>
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<td height="40" align="right" valign="middle" bgcolor="#FFFFFF" style="word-break:break-all">作者：Sager
文章来源：<a href="http://www.cnjsp.org" target=_blank>www.cnjsp.org</a><br>
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<iframe name="ad" frameborder=0 width=30 height=10 scrolling=no src=../count.jsp?news_id=285></iframe>
次 加入时间：2004-09-30</td>
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<td height="623" align="left" valign="top" class="content">读文件的例子<br>***************************************************<br><%@ page contentType="text/html;charset=gb2312"%><br><%<br>//变量声明\<br>java.lang.String strFileName; //文件名\r<br>java.io.File objFile; //文件对象\r<br>java.io.FileReader objFileReader; //读文件对象\r<br>char[] chrBuffer = new char[10]; //缓冲\r<br>int intLength; //实际读出的字符数(一个中文为一个字符)<br><br>//设置待读文件名\r<br>strFileName = "d:\\test.txt";<br><br>//创建文件对象\r<br>objFile = new java.io.File(strFileName);<br><br>//判断文件是否存在<br>if(objFile.exists()){//文件存在<br> //创建读文件对象\r<br> objFileReader = new java.io.FileReader(objFile);<br><br> //读文件内容<br> while((intLength=objFileReader.read(chrBuffer))!=-1){<br> //输出\r<br> out.write(chrBuffer,0,intLength);<br> }<br><br> //关闭读文件对象\r<br> objFileReader.close();<br>}<br>else{//文件不存在<br> out.println("下列文件不存在："+strFileName);<br>}<br>%><br>**************************************************<br>写文件的例子<br>**************************************************<br>使用PrintWriter对象即可写Text文件。<br><br>请参考以下示例： <br><br><%@ page import="java.io.*" %><br><%<br>String str = "print me";<br>//always give the path from root. This way it almost always works.<br>String nameOfTextFile = "/usr/anil/imp.txt";<br>try { <br> PrintWriter pw = new PrintWriter(new FileOutputStream(nameOfTextFile));<br> pw.println(str);<br> //clean up<br> pw.close();<br>} catch(IOException e) {<br> out.println(e.getMessage());<br>}<br>%><br><br>现在，打开imp.txt加以查看，字符串"print me"应该已经写入。 <br><br>还有另一种方法，使用IN16标记库的file tag，可参考http：//sourceforge.net/project/?group_id=1282.<br>其示例的语法为:<br><ext:file action="write|append|create|copy|move|delete|rename|read" from="<%= myfilename %>"></td>
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<td height="29" align="right" valign="middle"><a href="../read_review.jsp?news_id=285">查看该新闻的相关评论</a></td>
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<td height="16" align="right" valign="middle"> </td>
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<table width="100%" height="48" border="0" cellpadding="3" cellspacing="0" bgcolor="#FFFFFF">
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<!-- -->
<form name="form3" action="../sendmail.jsp" method="post" onSubmit="return formCheck3()">
<table width="92%" height="206" border="0" cellpadding="2" cellspacing="0" bgcolor="#FFFFFF">
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<td><font color="#333333"><strong>给我写信</strong></font></td>
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<td height="32" align="center"> <input name=subject type=text size="25" class=inputCls value="邮件主题" onClick="this.value=''" onFocus=this.select() onMouseOver=this.focus()></td>
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<td height="32" align="center"> <INPUT name=from type=text class=inputCls id="from" value="您的邮件" size="25" onClick="this.value=''" onFocus=this.select() onMouseOver=this.focus()>
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<td height="102" align="center"> <TEXTAREA name="content" rows=6 cols=23 class="textare"></TEXTAREA></td>
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<td> <input type="submit" name="Submit2" class=mybutton value="发送邮件">
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</form>
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<!-- review -->
<form action="../fill_review.jsp" method=post name="form2" onsubmit="return formCheck2()">
<input type="Hidden" name="news_id" value="285">
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<td height="20" colspan="2"><font color="#333333"><strong>发表评论</strong></font></td>
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<td width="62%" height="7" align="center"></td>
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<td align="right">您的网名：</td>
<td align="left"> <input name="review_name" type="text" class=inputCls size="14" maxlength=13 value=""></td>
</tr>
<tr align="center">
<td align="right">您的邮箱： </td>
<td align="left"> <input name="review_email" type="text" class=inputCls size="14" maxlength=20 value=""></td>
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<tr align="center">
<td height="94" colspan="2"> <TEXTAREA name="review_content" rows=5 cols=23 class="textare"></TEXTAREA>
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<td colspan="2"> <input name="submit" type=submit class=mybutton value="发表评论"></td>
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</form>
<!-- review end -->
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<td height="20" align="left" valign="top" bgcolor="#999999"><font color="#333333"><strong>相关文章链接</strong></font></td>
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<td height="53" align="left" valign="top"><a href="20080213.html" target=_blank>在JSP中写text文件</a> [2004-06-03]<br><a href="2008013.html" target=_blank>jsp文件操作之读取篇</a> [2007-01-03]<br><a href="2008014.html" target=_blank>jsp文件操作之写入篇</a> [2004-01-15]<br><a href="2008015.html" target=_blank>jsp文件操作之追加篇</a> [2004-01-15]<br><a href="20080266.html" target=_blank>java读取配置文件例子</a> [2004-09-21]<br><a href="20080267.html" target=_blank>一个读取文件和子目录列表的程序</a> [2004-09-21]<br><a href="20080268.html" target=_blank>JSP文件操作</a> [2004-09-21]<br><a href="13004003160.html" target=_blank>JSP生成验证码源程序</a> [2005-04-11]<br></td>
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