Tomcat + JSP Access MySQL5. * Database

xiaoxiao2021-04-08  4

Tomcat JSP to access the mysql database:

1. Install the Tomcat and MySqlshuu to download mysql-connector-java.zip, then decompress two files, I download my mysql-connection-java-5.0.0-beta, so two files are mysql-connector-java -5.0.0-beta-bin.jar and mysql-connector-java-5.0.0-beta-bin-g.jar;

2. Copy mysql-connector-java-5.0.0-beta-bin.jar to the Apache-Tomcat / Common / Lib directory, restart Tomcat;

3, write a JSP file, such as Test.jsp:

<% @ Page Import = "java.io. *"%> <% @ page import = "java.util. *"%> <% @ page import = "java.sql. *"%> <% @ page contenttype = "text / html; charSet = GB2312"%>

dbjsp.jsp </ title> </ head> <body> <% connection con; statement stmt; resultset rs;</p> <p>Class.Forname ("com.mysql.jdbc.driver"); //class.forname ("org.gjt.mm.mysql.driver "). NewInstance ();</p> <p>DriverManager.registerDriver (new com.mysql.jdbc.Driver ()); String dbUrl = "jdbc: mysql: // localhost:? 3306 / BookDB userUnicode = true & characterEncoding = GB2312"; String dbUser = "user"; String dbPwd = " 123456 "; con = java.sql.driverManager.getConnection (DBURL, DBUSER, DBPWD); stmt = con.createstatement (); rs = stmt.executeQuery (" Select ID, Name, Title, Price from Books "); OUT. Println ("<Table Border Width = 400>); while (rs.next ()) {string col1 = rs.getstring (1); string col2 = rs.getstring (" name "); string col3 = rs.getstring (3); string col4 = rs.getstring (4);</p> <p>Out.println ("<TD>" COL1 "</ TD> <TD>" COL2 "</ TD> <TD>" COL3 "</ TD> <TD>" COL4 "</ td> </ tr>");} out.println ("</ Table>"); rs.close (); stmt.close () ;con.close ();%> </ body> </ html></p> <p>4, establish myApp in the apache-tomcat / webapps / directory, store the JSP file in myApp directory; access LocalHost: 8080 / myapp / test.jsp, information display, OK.</p></div><script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script><ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-4353904188500336" data-ad-slot="2690212427" data-ad-format="auto" data-full-width-responsive="true"></ins><script> (adsbygoogle = window.adsbygoogle || []).push({}); </script><div class="text-center mt-3 text-grey"> 转载请注明原文地址: http://www.9cbs.com/read-132840.html</div><div class="plugin d-flex justify-content-center mt-3"></div><hr><div class="row"><div class="col-lg-12 text-muted mt-2"><i class="icon-tags mr-2"></i><span class="badge border border-secondary mr-2"><h2 class="h6 mb-0 small"><a class="text-secondary" href="tag-2.html">9cbs</a></h2></span></div></div></div></div><div class="card card-postlist border-white shadow"><div class="card-body"><div class="card-title"><div class="d-flex justify-content-between"><div><b>New Post</b>(<span class="posts">0</span>) </div><div></div></div></div><ul class="postlist list-unstyled"> </ul></div></div><div class="d-none threadlist"><input type="checkbox" name="modtid" value="132840" checked /></div></div></div><script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script><ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-4353904188500336" data-ad-slot="2690212427" data-ad-format="auto" data-full-width-responsive="true"></ins><script> (adsbygoogle = window.adsbygoogle || []).push({}); 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