writeappend.java

这个是JSP应用开发详解(第3版)的全部源代码!绝对的真实,绝对有用!

import java.io.*;

public class WriteAppend
{
	//文件路径
	private String filePath;
	//追加的字符串变量
	private String str;
	//初始化
	public WriteAppend()
	{
		filePath = null;
		str = "Default message";
	}
	//设置文件路径
	public void setFilePath(String filePath)
	{
		this.filePath = filePath;
	}
	//得到文件路径
	public String getFilePath()
	{
		return this.filePath;
	}
	//设置要追加的字符串
	public void setStr(String str)
	{
		this.str = str;
	}
	//得到要追加的字符串
	public String getStr()
	{
		return this.str;
	}
	//追加字符串
	public String writeStr()
	{
		try
		{
			//创建文件filePath并写入str字符串，注意和写入篇的区别
			FileWriter f = new FileWriter(filePath,true);
			PrintWriter out = new PrintWriter(f);
			out.print(str + "\n");
			out.close();
			//关闭文件并返回success字符串
			f.close();
			return "ok";
		}
		catch (IOException e)
		{
			return e.toString();
		}
	}
}