读文件

Posted 2020-10-26

package tool;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;

public class ReadFile {
/**

• 以行为单位读取文件，常用于读面向行的格式化文件
  */
  public ArrayList<String[]> readFile(String fileName) {
  BufferedReader reader =null;
  ArrayList<String[]> list = new ArrayList<String[]>();
  try {
  reader = new BufferedReader(new InputStreamReader(new FileInputStream(fileName),"UTF-8"));
  String tempString = null;
  // 一次读入一行，直到读入null为文件结束
  while ((tempString = reader.readLine()) != null) {
  // 显示行号
  String[] str=tempString.split("=");
  list.add(str);
  }
  reader.close();
  } catch (IOException e) {
  e.printStackTrace();
  } finally {
  if (reader != null) {
  try {
  reader.close();
  } catch (IOException e1) {
  }
  }
  }
  return list;
  }
  }