java 读取文本文件

String filename = "";

File f = new File(filename);

InputStreamReader isr;

try {

isr = new InputStreamReader(new FileInputStream(f));

BufferedReader br = new BufferedReader(isr);

String line;

String content = "";

while((line=br.readLine())!=null){

content += line;

}

} catch (IOException e) {

// TODO 自动生成的 catch 块

e.printStackTrace();

}