java study notes --jsp often encounter a problem link collection

Before learning to do java development, did not write blog. Solution found on the Internet, the link saved.

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1 jsp taglib directives Usage
    https://blog.csdn.net/xiaoxiong_web/article/details/54340218
    
2 <C: OUT> Code Interpretation
    https://blog.csdn.net/libing398448548/article/details/83390127
    
. 3 JavaWeb the JSP: custom label
     https://www.cnblogs.com/vmax-tam/p/4145334.html
    
. 4 custom tags (the TagSupport)
    https://www.cnblogs.com/wqj-blog/p/5948993. HTML
    
5 using a browser, check the error message, refer
    https://www.cnblogs.com/sxdcgaq8080/p/7839310.html