appendfile.java

jsp数据库编程入门

package test;
import java.io.*;
import javax.servlet.*;

public class AppendFile
{
  private String path;  //文件路径
  private String something;  //要写入文件的内容
  //构造函数
  public AppendFile()
  {
    path = null;
    something = "Default message";
  }
  //设置文件路径
  public void setPath(String apath)
  {
    path=apath;
  }
  //得到文件路径
  public String getPath() 
  {
    return path;
  }
  //设置要写入文件的内容
  public void setSomething(String asomething) 
  {
    something = asomething;
  }
  public String getSomething() 
  {
    return something;
  }
  //向文件中追加字符串
  public String appendSomething() 
  {
    try{
      FileWriter f = new FileWriter (path,true);
      PrintWriter out = new PrintWriter(f);
      out.print(this.getSomething() + "\n");
      out.close();
      f.close();
      return "Append File OK!";
      }catch (IOException e) {
      return e.toString();
    }
  }
}