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java - out.println在程序中报错

黄舟黄舟2802 days ago631

reply all(3)I'll reply

  • ringa_lee

    ringa_lee2017-04-18 10:48:07

    Think about it carefully, maybe the jdk in the IDE is not set up properly, so System.outis not introduced?

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  • 巴扎黑

    巴扎黑2017-04-18 10:48:07

    Written in the function because the out object is not defined, and if written directly inside the Jsp page, out is the default built-in object out of the Jsp page.

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  • 大家讲道理

    大家讲道理2017-04-18 10:48:07

    Thanks to the two classmates upstairs. The servlet-api.jar in tomcat was not introduced.

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