At the end of sophomore year, Java web. is used in database, jdbc.myeclipse realizes user registration and landing. And there is no 500 error. Users can't repeat registration. There is no 500 error when the user is clicking at random

Filename	Size	Update
JavaWEB02_Servlet.docx	27531	2018-04-14
JavaWEB04_HTTP协议.docx	30236	2018-04-14
SERVLET_JSP.01.ppt	457216	2018-04-14

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