Download MySQL and JSP Web Applications: Data-Driven Programming by James Turner PDF

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By James Turner

JSP builders stumble upon particular difficulties while construction internet purposes that require severe database connectivity. MySQL and JSP net purposes addresses the demanding situations of creating data-driven purposes according to the JavaServer Pages improvement version. MySQL and JSP net purposes starts off with an summary of the center applied sciences required for JSP database development--JavaServer Pages, JDBC, and the database schema. The ebook then outlines and provides an online trade program that demonstrates suggestions reminiscent of receiving and processing consumer enter, designing and imposing company ideas, and balancing the person load at the server. during the JDBC (Java DataBase Connector), the developer can converse with so much advertisement databases, equivalent to Oracle. The recommendations awarded in MySQL and JSP internet functions heart at the open resource instruments MySQL and Tomcat, permitting the reader a reasonable option to attempt functions and test with the book's examples.

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The code then iterates over the array of cookies looking for the cookie that holds the username of the user. If the code finds a match, it writes it into the Bean and sets a flag. In a real application, you probably also would make a database call to load all sorts of user information, as you'll see in Chapter 8. If the code didn't find the cookie, it checks to see if the Bean's username is set. If it is, it means that the form has been submitted and that a username now resides inside the user object.

4. 4. The BFG product view. 4 is really just an extension of the "JSP page as a database-publishing template" model that is used for the catalog detail page. In other words, it's a JSP page that can be edited for look and feel but that actually gets the content from the database. As has already been mentioned, doing things this way means that you design most of the pages only once, for the master copy, and the actual pages are displayed by populating the master with the specific details of each product.

7. Creating a sample table. Working with ResultSets When you get a ResultSet back from a query, there are several ways to get at the data inside. You can refer to the columns positionally or by name. getString("lname_txt"); } This example uses reference by name. getString(1); } This uses positional reference. The integer argument to getString refers to the position of the column in the list of columns specified in the query, starting with 1 for the first field. In general, you shouldn't use positional notation with a * column list.

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