Long time no use JSP+SERVLET+JDBC this combination, it can be said that since the absence of such work has not been developed this way. Recently did not learn anything, feel the plan is disorderly, take advantage of this weekend write something to find feeling.
This time want to use JSP+SERVLET+JDBC to write a small product display platform demo. function is very simple, is able to display the type of goods, and then according to the type of the type of product can be displayed, said is a small product display platform is more than a change of the demo.
Is the structure of the entire project:
To facilitate decoupling, use the MVC pattern for development, which describes the role of each package:
Various directories under the WebContent:
This is the structure of the whole project.
Because it is a small demo. Don't want to get too complicated, the whole project is currently designed for two entity classes: type (product type), Goods (product)
The entity classes here use the anemia model, which does not contain business logic.
Here are the code for the two classes:
Type.java
1 Packagemodel;2 3 /*4 * Type entity5 */6 Public classType {7 8 PrivateLong ID;9 PrivateString name;Ten One PublicLong getId () { A returnID; - } - the Public voidsetId (Long id) { - This. ID =ID; - } - + PublicString GetName () { - returnname; + } A at Public voidsetName (String name) { - This. Name =name; - } - - @Override - PublicString toString () { in return"Type [id=" + ID + ", name=" + name + "]"; - } to}
Goods.java
1 Packagemodel;2 3 /*4 * Commodity Entities5 */6 Public classGoods {7 8 PrivateLong ID;9 PrivateString name;Ten PrivateDouble Price; One PrivateLong Tid;//Product Type (foreign key) A - PublicLong getId () { - returnID; the } - - Public voidsetId (Long id) { - This. ID =ID; + } - + PublicString GetName () { A returnname; at } - - Public voidsetName (String name) { - This. Name =name; - } - in PublicDouble GetPrice () { - returnPrice ; to } + - Public voidSetprice (Double price) { the This. Price =Price ; * } $ Panax Notoginseng PublicLong Gettid () { - returnTid; the } + A Public voidSettid (Long tid) { the This. Tid =Tid; + } - $ @Override $ PublicString toString () { - return"Goods [id=" + ID + ", name=" + name + ", price=" + Price + ", tid=" + tid + "]"; - } the}
I usually in my own development when the habit of static pages first, and then change the static part of the dynamic can be, after all, there is no front desk to help you do.
Here I use Hbuilder first to write the display page, just for the sake of display, all did not add CSS decoration, the interface looks ugly is not a bit.
Here is the Product Type Display page:
1 <!DOCTYPE HTML>2 <HTML>3 <Head>4 <MetaCharSet= "Utf-8">5 <title>Commodity Display Platform</title>6 </Head>7 <Body>8 <Div>9 <Div><ahref="">Add a Product Type</a></Div>Ten <!-- One [email protected] A Time: 2015-09-13 - Description: These displays will be replaced with dynamic information - - the <Div>Home appliances</Div> - <Div>Digital</Div> - </Div> - </Body> + </HTML>
Product Display page:
1 <!DOCTYPE HTML>2 <HTML>3 4 <Head>5 <MetaCharSet= "Utf-8">6 <title>Commodity</title>7 </Head>8 9 <Body>Ten <Div> One <Div><ahref="">Add Item</a></Div> A <!-- - [email protected] - Time: 2015-09-13 the Description: These displays will be replaced with dynamic information - - - <Table> - <TR> + <th>Serial number</th> - <th>Product Name</th> + <th>Price</th> A </TR> at <TR> - <TD>1</TD> - <TD>Fan</TD> - <TD>998</TD> - </TR> - </Table> in </Div> - </Body> to + </HTML>
The operating interface is as follows:
This is just a static page display, here I put the dynamic display of this information in the next blog post.
JSP+SERLVET+JDBC-based development (1)
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