Go语言视频零基础入门到精通

javalearner

JSF Weekly 电子报订阅。这是网上来的一个JSF入门实例，原来它是jsf1.0版本的，我将其改为了jsf1.1版。





  这个例子主要有三个特点：
一、中英文界面且资源包使用类，如中文资源包：

1. /*
   
2. * $Id: Resources_zh.java,v 1.2 2003/06/17 01:14:03 jack Exp $
   
3. *
   
4. */
   
5. package net.jackwind.jsf;
   
6. // Chinese lang. resource bundle.
   
7. public class Resources_zh extends java.util.ListResourceBundle {
   
8.         static final Object[][] contents = new String[][] {
   
9.                 { "locale", "请选择您的语言" },
   
10.                 { "title", "JSF 演示：  电子报订阅系统 " },
    
11.                 { "prompt", "您正在订阅" },
    
12.                 { "newsletter", "电子报" },
    
13.                 { "email", "电子信箱" },       
    
14.                 { "password", "密码" },       
    
15.                 { "confirmPassword", "确认密码" },       
    
16.                 { "format", "电子邮件格式" },       
    
17.                 { "donotuse", "请不要寄给我更多广告信息" },
    
18.                 { "submit", "订阅" },
    
19.                 { "url-welcome", "首页" },
    
20.                 { "url-subscribe", "订阅" },
    
21.                 { "passwords-not-match", "密码与重覆密码不相配。 " },
    
22.                 { "go-back", "退回" },
    
23.                 { "thank-you", "您的订阅申请已被提交，感谢支持。" },
    
24.                 { "details", "订阅详细信息" }
    
25.         };
    
26.        
    
27.         public Object[][] getContents() {
    
28.                 return contents;
    
29.         }
    
30. }
    

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二、定义了一个组件，它将用户提交的邮件地址输出时添加了一个email链接，这仅仅为了学习自定义组件。如下如示：





  

2. /*
3. * $Id: UIOutputEmail.java,v 1.1 2003/06/20 16:48:49 jack Exp $
4. *
5. */
6. package net.jackwind.jsf;

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import java.io.IOException;
import java.util.StringTokenizer;
import javax.faces.component.UIOutput;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter; /**
* @author JACK (Jun 19, 2003)
* @class UIOutputEmail
*/
  
   
   
   

   
  

1. 
   
2.   public class UIOutputEmail extends UIOutput {
3. 
   
4.   private String host;
5. 
   
6.   private String user;
7. 
   
8.   
9. 
   
10.   private void parseEmail(String email) {
11. 
    
12.      StringTokenizer st = new StringTokenizer(email, "@");
13. 
    
14.   i   f (st.countTokens() != 2)
15. 
    
16.        throw new IllegalArgumentException("Invalid email address: " + email);
17. 
    
18.      user = st.nextToken();
19. 
    
20.      host = st.nextToken();
21. 
    
22.   }
23. 
    
24.   
25. 
    
26.   // This method indicates whether this component renders itself
27. 
    
28.   // or delegates rendering to a renderer.
29. 
    
30.   public boolean getRendersSelf() {
31. 
    
32.       return true;
33. 
    
34.   }

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/**
* Decode the current state of this UIComponent from the request contained in
* the specified FacesContext, and attempt to convert this state information
* into an object of the required type for this component.
*/
// public void decode(FacesContext context) throws IOException {
// // Not needed.
// }

// Called during the Render Response phase
public void encodeEnd(FacesContext context) throws IOException {
    if(user == null || host == null) {
    try {
         String clientId = getClientId(context);
         parseEmail((String)getValue());
    }catch(Exception e) {
       //System.out.println(e);
    }
   }
    ResponseWriter writer = context.getResponseWriter();

// Represent this component as HTML
    writer.write("<script language="JavaScript">
");
    writer.write("function emailAddress(host, user) {
");
    writer.write("document.write("<a href="mailto:");
");
    writer.write("document.write(user + "@" + host);
");
    writer.write("document.write("">");
");
    writer.write("document.write(user + "@" + host);
");
    writer.write("document.write("</a>");
}

");
    writer.write("emailAddress("" + host + "", "" + user + "");
");
    writer.write("</script>
");
   }
} 自定义组件的标记类：

1. /*
   
2. * $Id: UIOutputEmailTag.java,v 1.1 2003/06/20 16:48:49 jack Exp $
   
3. *
   
4. */
   
5. package net.jackwind.jsf;
   
6. import javax.faces.component.UIComponent;
   
7. import javax.faces.webapp.UIComponentTag;
   
8. import javax.faces.context.FacesContext;
   
9. import javax.faces.application.Application;
   
10. import javax.faces.el.ValueBinding;
    
11. /**
    
12. * @author         JACK        (Jun 19, 2003)
    
13. * @class         UIOutputEmail
    
14. */
    
15. public class UIOutputEmailTag extends UIComponentTag {
    
16.         private String valueRef;
    
17.         private String value;
    
18.         public  String getComponentType() {
    
19.                 return "UIOutputEmail";
    
20.         }
    
21.         public void setValue(String value) {
    
22.                 this.value = value;
    
23.         }
    
24.         public String getValue() {
    
25.                 return value;
    
26.         }
    
27.         public String getValueRef() {
    
28.                 return valueRef;
    
29.         }
    
30.         public void setValueRef(String newValueRef) {
    
31.                 valueRef = newValueRef;
    
32.         }
    
33.         /**
    
34.          * Return the rendererType property that selects the Renderer to be used
    
35.          * for encoding this component, or null to ask the component to render
    
36.          * itself directly. Subclasses must override this method to return the
    
37.          * appropriate value.
    
38.          */
    
39.         public String getRendererType() {
    
40.                 return null;
    
41.         }
    
42.          public void setProperties(UIComponent component) {
    
43.             super.setProperties(component);
    
44.             setStringProperty(component, "value", value);  
    
45.             setStringProperty(component, "valueRef", valueRef);   
    
46.          }  
    
47.        private void setStringProperty(UIComponent component, String attrName, String attrValue) {   
    
48.            if(attrValue == null)   
    
49.               return;   
    
50.            if(isValueReference(attrValue)) {
    
51.                 FacesContext context =FacesContext.getCurrentInstance();  
    
52.                 Application application =context.getApplication();
    
53.                 ValueBinding binding =application.createValueBinding(attrValue);     
    
54.                 component.setValueBinding(attrName, binding);
    
55.            }  
    
56.            else {
    
57.                    component.getAttributes().put(attrName, attrValue);  
    
58.            }
    
59.       }  
    
60.       public void release() {  
    
61.          super.release();
    
62.          value = null;
    
63.          valueRef = null;  
    
64.       }
    
65. }
    

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三、自定义了邮件地址的验证器：
/*
* $Id: EmailAddressValidator.java,v 1.2 2003/06/20 16:48:49 jack Exp $
*
*/
package net.jackwind.jsf; import java.util.regex.Matcher;
import java.util.regex.Pattern;
  import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.component.UIOutput;
import javax.faces.context.FacesContext;
import javax.faces.validator.*; /**
* @author JACK (Jun 16, 2003)
* @class EmailValidator
*/
public class EmailAddressValidator implements Validator {  /**
* The message identifier of the Message to be created if
* the validation fails.
*/
public static final String EMAIL_ADDRESS_INVALID ="net.jackwind.jsf.EMAIL_ADDRESS_INVALID";  // Email address pattern. Used by regex.
public static String PATTERN_EMAIL ="[a-zA-Z0-9][\w\.\-]*@[a-zA-Z0-9][\w\.\-]*\.[a-zA-Z][a-zA-Z\.]*";
private Pattern pattern = Pattern.compile(PATTERN_EMAIL);  public void validate(FacesContext context, UIComponent component,Object ob) {
   if ((context == null) || (component == null)) {
       throw new NullPointerException();
   }
    if (!(component instanceof UIOutput)) {
      return;
   }

   Object componentValue = ((UIOutput) component).getValue();
   String value = (componentValue == null ? null : componentValue.toString());
   if(value == null)
     return;

    if (!validateEmailAddress(value)) {

     FacesMessage message = new FacesMessage( FacesMessage.SEVERITY_ERROR, "邮件地址错误", "邮件地址错误");
     throw new ValidatorException(message);

    }
}  private boolean validateEmailAddress(String emailAddress) {
     if(emailAddress == null) return false;
     Matcher matcher = pattern.matcher(emailAddress);
     return matcher.matches();
} }
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源码下载：http://file.javaxxz.com/2014/10/10/035436750.zip