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Today, I will talk to you about how to create Managed Beans in MyEclipse development JSF. Many people may not know much about it. In order to let everyone know more, Xiaobian summarizes the following contents for everyone. I hope everyone can gain something according to this article.

MyEclipse Development JSF III. Creating a Message Bundle

A Message Bundle file is a simple properties file that stores messages related to keys, provides internationalization support, and can also be used in JSP pages. Struts also provides a similar file, ApplicationResources.properties.

In JSF, you can load a message bundle in a page using the following code: f:loadBundle basename="com.jsfdemo.MessageBundle" var= "bundle"/>

Before creating the message bundle file, create the com.jsfdemo package by right-clicking "New Package" in the src file. Use the New Key File Wizard to create a message bundle file, as shown in Figure 3.1:

MyEclipse Development JSF Figure 1

Figure 3.1: Creating the Message Bundle file

After creating the MessageBundle.properties file, add key/value pairs or text strings for each tag displayed on the JSP page. You can copy the contents of the following into the message bundle file.

MessageBundle.properties

user_name_label=User Name:

user_password_label=Password:

login_button_label=Login

Contents of MessageBundle.properties file

After the MessageBundle file is created, the next step is to create a ManagedBean to handle user logins.

MyEclipse Development JSF IV. Creating Managed Beans

In this section we'll create Managed Beans to perform login, which in this Demo is simply checking that the username and password are both myeclipse and redirecting the page to userLoginSuccess.jsp.

Start by opening the faces-config.xml file with MyEclipse JSF Editor

MyEclipse Development JSF Figure 2

Figure 4.1: Opening faces-config.xml file for editing

Click Add ManagedBean in the upper right corner to add a new bean, as shown in the figure:

MyEclipse Development JSF Figure 3

Figure 4.2: Launch the ManagedBean wizard from the Outline View

Click and the new Managed Bean wizard appears, adding values as shown

MyEclipse Development JSF Figure 4

Figure 4.3: Setup the new ManagedBean's class and properties

MyEclipse Development JSF Figure 5

Figure 4.4: Managed Bean Wizard Final Page

After clicking Finish, I found that a UserBean has been added to Outline View.

MyEclipse Development JSF Figure 6

Figure 4.5: UserBean now shown in the Outline View

The source code for UserBean.java also appears in the java editor.

MyEclipse Development JSF Figure 7

Figure 4.6: UserBean Java source opened up in an editor

The setters and getters methods for Username and Password have been generated for us, so the next step is to add a method loginUser to this class to handle user login operations.

The code is as follows:

UserBean.java

public String loginUser() ... { if("myeclipse".equals(getUserName()) && "myeclipse".equals(getPassword())) return "success"; FacesContext facesContext = FacesContext.getCurrentInstance(); FacesMessage facesMessage = new FacesMessage( "You have entered an invalid user name and/or password"); facesContext.addMessage("loginForm", facesMessage); return "failure"; }

Note that the UserBean class does not inherit any JSF classes or interfaces, it is simply a JavaBean that includes extra logic to perform operations. It includes functionality similar to Struts Form and Struts Action in Struts, integrating them into a single class.

In addition, these methods do not return to the specified class, like ActionForward in Struts.

After reading the above, do you know more about how to create Managed Beans in MyEclipse Development JSF? If you still want to know more knowledge or related content, please pay attention to the industry information channel, thank you for your support.

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