方法一:最常用的方式:
public static void main(String[] args)throws Exception{
InputStream is=new FileInputStream("D://jd-gui.cfg");
byte[] b=new byte[200];
int length=0;
while(-1!=(length=is.read(b,0,100)))
{
String str=new String(b,0,length);
System.out.println(str);
}
is.close();
}
public static void readTxtFile(String filePath){
try {
String encoding="GBK";
File file=new File(filePath);
if(file.isFile() && file.exists()){ //判断文件是否存在
InputStreamReader read = new InputStreamReader(
new FileInputStream(file),encoding);//考虑到编码格式
BufferedReader bufferedReader = new BufferedReader(read);
String lineTxt = null;
while((lineTxt = bufferedReader.readLine()) != null){
System.out.println(lineTxt);
}
read.close();
}else{
System.out.println("找不到指定的文件");
}
} catch (Exception e) {
System.out.println("读取文件内容出错");
e.printStackTrace();
}
}