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<title>新時代軟件教程:操作系統 主頁制作 服務器 設計軟件 網絡技術 編程語言 文字編輯</title>
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<p align="center"><big><strong>jsp文件操作之寫入篇</strong></big></p>
<div align="right">摘自《jsp中國論壇 http://jspbbs.yeah.net》</div>
<br>
WriteOver.Jsp<br>
<br>
<html><br>
<head><br>
<title>Write over a file</title><br>
</head><br>
<body bgcolor="#000000"><br>
<br>
<jsp:useBean id="writer" class="WriteOver" scope="request"><br>
<jsp:setProperty name="writer" property="path" value="/path/to/afile.txt" /><br>
<jsp:setProperty name="writer" property="something" value="Something already set as a property in WriteOver" /><br>
</jsp:useBean><br>
<br>
<h3>Write to the file</h3><br>
<br>
<p><br>
<br>
<% writer.setSomething("Something to write to the file"); %><br>
<% out.print(writer.getSomething()); %><br>
<br>
<% out.print(writer.writeSomething()); %><br>
<br>
</p><br>
</body><br>
</html><br>
<br>
<br>
import java.io.*;<br>
<br>
/**<br>
* WriteOver.java <br>
* Written by Morgan Catlin Email: mfcatlin@csclub2.stthomas.edu<br>
* August 19, 1999<br>
* <br>
* Variables:<br>
* String path = path to file to write to (ie. /you/afile.txt)<br>
* String something = something to write to the file<br>
* <br>
* Methods:<br>
* void setPath() = sets path<br>
* String getPath() = returns path<br>
* void setSomething() = sets something<br>
* String getSomething() = returns something<br>
* String writeSomething() = writes something to the path, <br>
* returns a message that indicates success or failure(an Exception)<br>
*/<br>
<br>
public class WriteOver {<br>
<br>
private String path;<br>
private String something;<br>
<br>
public WriteOver() {<br>
path = null;<br>
something = "Default message";<br>
} // constructor WriteOver<br>
<br>
/**<br>
* Mutator for the path property<br>
*/<br>
public void setPath(String apath) {<br>
path = apath;<br>
} // mutator setPath<br>
<br>
/**<br>
* Accessor for the path property<br>
*/<br>
public String getPath() {<br>
return path;<br>
} // accessor getPathClient<br>
<br>
/**<br>
* Mutator for the something property<br>
*/<br>
public void setSomething(String asomething) {<br>
something = asomething;<br>
} // mutator setSomething<br>
<br>
/**<br>
* Accessor for the something property<br>
*/<br>
public String getSomething() {<br>
return something;<br>
} // accessor getSomething<br>
<br>
/**<br>
* This method writes something to the path<br>
*/<br>
public String writeSomething() {<br>
try {<br>
<br>
File f = new File(path);<br>
PrintWriter out = new PrintWriter(new FileWriter(f));<br>
<br>
out.print(this.getSomething() + "\n");<br>
out.close();<br>
return "Alles ist Gut.";<br>
} catch (IOException e) {<br>
return e.toString();<br>
} <br>
} // method writeSomething <br>
} // class WriteOver<br>
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