public void fileRead() throws Exception {
File file = new File("E:\\test\\test.txt");//定义一个file对象，用来初始化FileReader
FileReader reader = new FileReader(file);//定义一个fileReader对象，用来初始化BufferedReader
BufferedReader bReader = new BufferedReader(reader);//new一个BufferedReader对象，将文件内容读取到缓存
StringBuilder sb = new StringBuilder();//定义一个字符串缓存，将字符串存放缓存中
String s = "";
while ((s =bReader.readLine()) != null) {//逐行读取文件内容，不读取换行符和末尾的空格
sb.append(s + "\n");//将读取的字符串添加换行符后累加存放在缓存中
System.out.println(s);
}
bReader.close();
String str = sb.toString();
System.out.println(str );
//return str;
}
