about BufferedReader.readline()

最新推荐文章于 2021-03-15 10:48:21 发布
原创 最新推荐文章于 2021-03-15 10:48:21 发布 · 842 阅读 · 0 ·
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本文通过一个具体的编程案例，讲述了在使用Java进行HTTP请求处理时遇到的一个常见问题：在调试过程中监视表达式导致的数据流提前被消费，进而使得程序逻辑无法按预期执行。作者分享了解决这一问题的经验教训，并提醒开发者在调试涉及流读取的程序时要格外小心。

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BufferedReader reader =

request.getReader();

 

 

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

          jsonStrBuf.append(line);

}

 

昨天在调试该程序的时候， reader.readLine()设置为监视表达式，而输入流只有一行，在程序中，无论怎么样循环都进不去，郁闷啊郁闷。最终解决了这个问题，表达式已经事先读取了流，程序中就不会再读取到，低级的错误！！！

 

以后调试程序，表达式在流的读取时，会影响到程序的顺序执行的。请万分注意！！

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