A practical JBUILDER8 + STRUTS, a simple example

A practical JBUILDER8 STRUTS, a simple example

Liu Xiaowei: Liuxiaowei2000@sina.com

I. Introduction

This article describes a simple Struts application step using JBuilder 8, mainly based on step, theoretical instructions. I hope to help everyone, I hope everyone can criticize!

Operating environment:

Windows 2000 Server (SP3)

J2SDK1.4.1_01

JAKARTA-STRUTS-1.0.2 (JBuilder8 comes with)

Second. Actual combat

1 Create a Web Application

1.1 Select File- "New Project to establish a new project called StrutsDemo, as shown below:

figure 1

1.2 Click Next, remove the items in Required Libraries, others constant, click Finish.

figure 2

1.3 Select Project- "Project Properties, set the Server page according to the image below, click OK:

image 3

1.4 Select File- "New-" Web page - "Web Application, click OK.

Figure 4

1.5 After filling out the picture below, click OK.

Figure 5

2 establish an actionform

2.1 Select File- "New-" Web Page - "ActionForm, click OK.

Image 6

2.2 After filling in the picture below, click OK.

Figure 7

2.3 Click the Add button, add the definition of the Name and Password field, click Next.

Figure 8

2.4 After filling out the picture below, click Finish.

Figure 9

2.5 Write an ActionForm code.

Simple validity checking in ActionForm, fill in the loginActionform's validate () function:

Public ActionerRors Validate (ActionMapping ActionMapping, HttpservletRequest HttpservletRequest) {

ActionerroS Errors = new actionerrors ();

IF ((Name == null) || (Name.length () <1))

Errors.Add ("Name", New ActionError ("Error.userName.Required)));

IF ((Password == null) || (Password.Length () <1))

Errors.Add ("Password", New ActionError ("Error.Password.Required));

Return Errors;

}

3 establish an action

3.1 Select File- "New-" Web page - "Action, click OK.

Figure 10

3.2 After filling out the picture below, click Next.

Figure 11

3.3 After filling out the picture below, click Finish. Figure 12

3.4 Write an action code.

In general, write logic in Action, access the database, etc. Fill in the Loginaction's Perform () function as follows:

Public ActionForward Perform (ActionMapping ActionMApping, ActionMApping ActionMApping, Actionform ActionForm, HttpServletRequest HttpservletRequest, httpservletResponse httpservletResponse) {

LoginActionform form = (loginactionform) Actionform;

IF (Form.GetName (). Equals ("Liuxiaowei" && (Form.GetPassword (). Equals ("Liuxiaowei"))))))))

{

// Save Our Logged-in User In the session

HttpSession session = httpservletRequest.getations ();

Session.setttribute ("Username", Form.GetName ());

Return (ActionMapping.FindForward ("Success");

}

ActionerroS Errors = new actionerrors ();

IF (! form.getname (). Equals ("liuxiaowei")))

Errors.Add (ActionerRors.global_ERROR, New Actionerror ("Error.userName.wrong"));

IF (! form.getpassword (). Equals ("liuxiaowei"))

Errors.Add (ActionerRors.global_ERROR, New Actionerror ("Error.Password.wrong");

SaveerRors (httpservletRequest, Errors);

Return (ActionMapping.FindForward ("login"));

}

4 establish JSP

4.1 Select File- "New-" Web Page - "JSP from ActionForm, click OK.

Figure 13

4.2 After filling in the picture below, click Next.

Figure 14

4.3 After filling out the picture below, click Next.

Figure 15

4.4 After filling out the picture below, click Finish.

Figure 16

4.5 Modify the Login.jsp file.

After the modification is complete, you are as follows (red is a modification section):

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

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

<% @ Taglib Uri = "/ Web-INF / STRUTS-Bean.tld" prefix = "bean"%>

<% @ Taglib Uri = "/ Web-INF / STRUTS-HTML.TLD" prefix = "html"%> <% @ Page ContentType = "text / html; charset = GBK"%>