FileInputStream fis = new FileInputStream("filePath"); // filePath为文件路径 // 声明一个字节数组 byte[] b = new byte[1024]; StringBuffer str = new StringBuffer(); int len ; // 循环读取 while ((len = fis.read(b)) != -1) { str.append(new String(b, 0, len)); } System.out.println(str.toString());