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Posted by / 01-Oct-2016 08:39

Updating database using servlet

In this document, I download both of 3 JDBC libraries for Oracle, My SQL, SQL Server, in practice, you only need JDBC library corresponding to the type of database you are using. JDBCFilter will check the request to ensure that it only opens JDBC connection for the necessary request, eg for Servlet, avoid opening JDBC connection to common requests like image, css, js, html package org.o7planning.simplewebapp.filter; import This example shows how to update table records using SQL update query.By using Statement.execute Update() you can execute update statements.Also we want an add link so that the end user can add a new book to the listing.

For instance, set it in the WEB-INF folder or its subdirectories. Http Session; import org.o7planning.simplewebapp.beans. User Account; public class My Utils package org.o7planning.simplewebapp.utils; import Connection Utils; import org.o7planning.simplewebapp.utils. My Utils; @Web Filter(filter Name = "jdbc Filter", url Patterns = ) public class JDBCFilter implements Filter In case, the user logined and remembered information in previous access (for example the day before). Http Session; import org.o7planning.simplewebapp.beans. User Account; import org.o7planning.simplewebapp.utils. Servlet Exception; import javax.servlet.annotation. Book Repository; /** * Servlet implementation class Book Editor Servlet */ @Web Servlet("/book") public class Book Editor Servlet extends Http Servlet package com.bookstore.web; import

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Statement.execute Update() method returns you number of records got updated.