JSF - h:selectManyCheckbox

h:selectManyCheckbox 标签呈现一组类型为"checkbox"的 HTML 输入元素，并使用 HTML 表格和标签标签对其进行格式化。

JSF 标签

<h:selectManyCheckbox value = "#{userData.data}"> 
   <f:selectItem itemValue = "1" itemLabel = "Item 1" /> 
   <f:selectItem itemValue = "2" itemLabel = "Item 2" /> 
</h:selectManyCheckbox>

渲染输出

<table>
   <tr>
      <td>
         <input name = "j_idt6:j_idt8" id = "j_idt6:j_idt8:0" value = "1" 
            type = "checkbox" checked = "checked" />
         <label for = "j_idt6:j_idt8:0" class = ""> Item 1</label>
      </td>
      
      <td>
         <input name = "j_idt6:j_idt8" id = "j_idt6:j_idt8:1" value = "2" 
            type = "checkbox" checked = "checked" />
         <label for = "j_idt6:j_idt8:1" class = ""> Item 2</label>
      </td>     
   </tr>
</table>

标签属性

示例应用程序

让我们创建一个测试 JSF 应用程序来测试上述标记。

UserData.java

package com.tutorialspoint.test;

import java.io.Serializable;

import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;

@ManagedBean(name = "userData", eager = true)
@SessionScoped
public class UserData implements Serializable {
   private static final long serialVersionUID = 1L;
   public String[] data = {"1","2","3"};
   
   public String[] getData() {
      return data;
   }

   public void setData(String[] data) {
      this.data = data;
   }
}

home.xhtml

<?xml version = "1.0" encoding = "UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns = "http://www.w3.org/1999/xhtml"
   xmlns:f = "http://java.sun.com/jsf/core"    
   xmlns:h = "http://java.sun.com/jsf/html">
   
   <head>
      <title>JSF Tutorial!</title>
   </head>
   
   <h:body>
      <h2>h:selectManyCheckbox example</h2>
      <hr />
      
      <h:form>
         <h3>Mutiple checkboxes</h3> 
         <h:selectManyCheckbox value = "#{userData.data}">
            <f:selectItem itemValue = "1" itemLabel = "Item 1" />
            <f:selectItem itemValue = "2" itemLabel = "Item 2" />
            <f:selectItem itemValue = "3" itemLabel = "Item 3" />
            <f:selectItem itemValue = "4" itemLabel = "Item 4" />
            <f:selectItem itemValue = "5" itemLabel = "Item 5" />
         </h:selectManyCheckbox>
         <h:commandButton value = "Submit" action = "result" />
      </h:form> 		
   
   </h:body>
</html> 

result.xhtml

<?xml version = "1.0" encoding = "UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns = "http://www.w3.org/1999/xhtml"
   xmlns:f = "http://java.sun.com/jsf/core"    
   xmlns:h = "http://java.sun.com/jsf/html"
   xmlns:ui = "http://java.sun.com/jsf/facelets">
   
   <h:body>
      <h2>Result</h2>
      <hr />
      
      <ui:repeat value = "#{userData.data}" var = "s">		
         #{s}
      </ui:repeat>   	
   </h:body>
</html> 

完成所有更改后，让我们像在 JSF - 创建应用程序章节中一样编译并运行应用程序。如果您的应用程序一切正常，这将产生以下结果。

选择多个复选框并按提交按钮。我们选择了四个项目。您将看到选定的结果。

jsf_basic_tags.html