bufferedreader.readline() 阻塞问题

BufferedReader.readLine()遇见的坑_bufferedreader.readline()卡住-优快云博客

socket流读取read阻塞和readLine阻塞问题解决方案 - 士三刀 - 博客园 (cnblogs.com)

BufferedReader的readLine方法阻塞的处理 (crystalchen.github.io)

while((mes = bufferedReader.readLine()) != null) {
    System.out.println(mes);
}

改为：

while((mes = bufferedReader.readLine()) != null) {
    if(mes.isEmpty())
        break;
    System.out.println(mes);
}