Struts drop-down frame

Struts drop-down frame

[the goal]

This example is based on the previous example "The Skyst Struts Program" (see "How to implement the simplest struts program"), its goal is to implement a drop-down input box in the input page, in the output page Show the drop-down input box is selected.

The project is expanded on the basis of the previous Simple project, and it is of course a new project.

[effect]

Enter the page:

Output page:

[background knowledge]

[step]

1. Run JavaWebStudio to open the Simple project:

Select menu: "File" - "Open Project", select the simplest Struts program item Simple directory, open the project via Simple.PRJ project file.

2, open the helloword.jap file:

Open the helloword.jap file from the JavaWebStudio file manager, then switch to the toolbar, select the Struts tab, drag the "SELECT tab" to the code editing window (or Web Visual Edit window).

Right-click on the code editing window:

Select a refresh view, the web visual editing window is refreshed, as shown below:

3, join the bean variable:

In the Web Visual Edit window, the mouse light is shifted to the drop-down list box and click the right mouse button, select "Add Bean Variable", add the bean variable "SELECT" (you can also click the right mouse in HelloWordform.java) Operation):

HelloWordform.java automatically joins the SELECT variable and setSelec () and getSelect () functions (code of the black body part).

Package EmptyPRJ;

Import javax.servlet.http.httpservletRequest;

Import org.apache.struts.Action.Actionerror;

Import org.apache.struts.Action.Actionerro;

Import org.apache.struts.Action.actionform;

Import org.apache.struts.action.actionmapping;

Public Final Class HelloWordForm Extends Actionform

{

PRIVATE STRING SELECT;

Private string mybeanvariable1;

// myfiledata;

Public string getMyBeanvariable11 ()

{

Return (this.mybeanvariable1);

}

Public void setMyBeanvariable1 (String MyBeanvariable1)

{

THIS.MYBEANVARIABLE1 = MyBeanVariable1;

}

Public void setSelect (String newselect)

{

SELECT = newselect;

}

Public String getSelect ()

{

Return SELECT;

}

}

}

Replenishing the code of the black body part in the HelloWord.jsp file (other code is automatically generated):

<% @ page contenttype = "text / html; charset = GB2312" Language = "java"%>

<% @ Taglib URI = "/ Web-INF / STRUTS-Bean.TLD" prefix = "bean"%> <% @ Taglib URI = "/ Web-INF / STRUTS-HTML.TLD" prefix = "html"%>

<% @ Taglib URI = "/ Web-INF / STRUTS-LOGIC.TLD" prefix = "logic"%>

<% @ Taglib URI = "/ Web-INF / STRUTS-TEMPLATE.TLD" prefix = "template"%>