readfile.java

来自「jsp数据库编程入门」· Java 代码 · 共 60 行

package test;
import java.io.*;
//import java.util.StringTokenizer;

public class ReadFile
{
  private String currentRecord = null;
  private BufferedReader file;
  private String path;
  //private StringTokenizer token;

  //创建文件对象
  public ReadFile()
  {
    file = new BufferedReader(new InputStreamReader(System.in),1);
  }
  //设置文件路径
  public void setPath(String filePath)
  {
    path = filePath;
    try{
      file = new BufferedReader(new
      FileReader(path));
    }catch (FileNotFoundException e) {
      System.out.println("file not found");
    }
  }
  //得到文件路径
  public String getPath() 
  {
    return path;
  }
  //关闭文件
  public void fileClose() throws IOException
  {
    file.close();
  }
  //读取下一行记录，若没有则返回-1
  public int nextRecord()
  {
    int returnInt = -1;
    try{
      currentRecord = file.readLine();
    }catch (IOException e){
      System.out.println("readLine problem, terminating.");
    }
    if (currentRecord == null)
      returnInt = -1;
    else{
      //token = new StringTokenizer(currentRecord);
      returnInt = 1;
    }
    return returnInt;
  }
  //以字符串的形式返回整个记录
  public String returnRecord()
  {
    return currentRecord;
  }
}