JSP编程-response.getWriter().flush();不起作用 [英] JSP Programming - response.getWriter().flush(); doesn't work
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问题描述
<%
response.getWriter().write("Hello world<BR>\n");
response.getWriter().flush();
wait(10000); // 10 seconds
response.getWriter().write("Goodbye happiness.<BR>\n");
%>
预期结果:浏览器中将显示"Hello World". 10秒后，再见幸福."显示.
Expected results: "Hello World" is displayed in the browser. 10 seconds later, "Goodbye happiness." is displayed.
会发生什么:该页面在此处加载10秒钟，然后在最后显示"Hello World Goodbye Happiness".
What happens: The page sits there loading for 10 seconds, and then "Hello World Goodbye Happiness" are displayed at the end.
我想要做的是显示达到不同里程碑时长期运行的状态.这可能吗?
What I want to do is display the status of a long-running operation as different milestones are reached. Is this possible?
我正在Windows 7上使用Eclipse EE(带有Tomcat).
I'm using Eclipse EE (with Tomcat) on Windows 7.
推荐答案
<html>
<body>
You didn't tell us which browser you were using. Chrome and Firefox behave as you expect them to do.
But, IE needs some filler at the start of the page. IE will wait for a certain amount of content to render.
I am testing with IE8 and this works for me.
<br/>
<%
out.print("Hello world<br/>");
out.flush();
Thread.sleep(3000); // 3 seconds for easy testing.
out.print("Goodbye happiness.");
%>
</body>
</html>
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