鍍金池/ 教程/ HTML/ JSF表單復(fù)選框(CheckBox)示例
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JSF表單復(fù)選框(CheckBox)示例

以下部分顯示如何使用JSF標(biāo)簽創(chuàng)建HTML復(fù)選框。<h:selectBooleanCheckbox>標(biāo)簽呈現(xiàn)類型為“checkbox”的HTML輸入元素。

以下JSF標(biāo)簽 - 

<h:selectBooleanCheckbox value="Remember Me" id="chkRememberMe" />

被渲染成為以下HTML標(biāo)簽。

<input id="jsfForm1:chkRememberMe" type="checkbox" 
   name="jsfForm1:chkRememberMe" checked="checked" />

<h:selectBooleanCheckbox>標(biāo)簽呈現(xiàn)一組類型為“checkbox”的HTML輸入元素，并使用HTML表格和標(biāo)簽標(biāo)簽進(jìn)行格式化。

JSF中的以下標(biāo)簽 - 

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

被渲染成為以下HTML標(biāo)簽。

<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>

<h:selectBooleanCheckbox>單個(gè)復(fù)選框

以下是文件：index.xhtml 中的代碼，它使用h:selectBooleanCheckbox創(chuàng)建一個(gè)復(fù)選框 -

<?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:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      >
    <h:body>
      <h:form>
      <h2>1. Single checkbox</h2>
      <h:selectBooleanCheckbox value="#{user.rememberMe}" /> Remember Me

      <h:commandButton value="Submit" action="result" />
      <h:commandButton value="Reset" type="reset" />

      </h:form>
    </h:body>
</html>

以下是文件：UserBean.java 中的代碼 - 

package com.yiibai;

import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.Map;

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

@ManagedBean(name="user")
@SessionScoped
public class UserBean{

  public boolean rememberMe;

  public boolean isRememberMe() {
    return rememberMe;
  }

  public void setRememberMe(boolean rememberMe) {
    this.rememberMe = rememberMe;
  }

}

以下是文件：result.xhtml 中的代碼 - 

<?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:h="http://java.sun.com/jsf/html"
      >

    <h:body>

      <h1>JSF 2 checkboxes example</h1>

      <h2>result.xhtml</h2>

      <ol>
        <li>user.rememberMe : #{user.rememberMe}</li>
      </ol>
    </h:body>

</html>

硬編碼復(fù)選框

以下是文件：index.xhtml 中的代碼,它使用h:selectManyCheckbox和f:selectItem創(chuàng)建硬編碼的復(fù)選框項(xiàng)。

<?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:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      >
    <h:body>
      <h:form>
      <h2>Mutiple checkboxes</h2>

      1. Hard-coded with "f:selectItem" : 
       <h:selectManyCheckbox value="#{user.favNumber1}">
         <f:selectItem itemValue="1" itemLabel="Number1 - 1" />
         <f:selectItem itemValue="2" itemLabel="Number1 - 2" />
         <f:selectItem itemValue="3" itemLabel="Number1 - 3" />
         <f:selectItem itemValue="4" itemLabel="Number1 - 4" />
         <f:selectItem itemValue="5" itemLabel="Number1 - 5" />
       </h:selectManyCheckbox>

      <br />

      <h:commandButton value="Submit" action="result" />
    <h:commandButton value="Reset" type="reset" />

      </h:form>

    </h:body>

</html>

以下是文件：result.xhtml 中的代碼 -

<?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:h="http://java.sun.com/jsf/html"
      >

    <h:body>

      <h1>JSF 2 checkboxes example</h1>

      <h2>result.xhtml</h2>

      <ol>
        <li>user.favNumber1 : #{user.favNumber1InString}</li>
      </ol>
    </h:body>

</html>

以下是文件：UserBean.java 中的代碼 -

package com.yiibai;


import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.Map;

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

@ManagedBean(name="user")
@SessionScoped
public class UserBean{

  public String[] favNumber1;

  public String[] getFavNumber1() {
    return favNumber1;
  }
  public void setFavNumber1(String[] favNumber1) {
    this.favNumber1 = favNumber1;
  }

  public String getFavNumber1InString() {
    return Arrays.toString(favNumber1);
  }


}

由數(shù)組生成的復(fù)選框

以下是文件：result.xhtml 中的代碼 -

<?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:h="http://java.sun.com/jsf/html">

    <h:body>
      <h1>JSF 2 checkboxes example</h1>
      <h2>result.xhtml</h2>
      <ol>
        <li>user.favNumber2 : #{user.favNumber2InString}</li>
      </ol>
    </h:body>
</html>

以下是文件：UserBean.java 中的代碼,它定義一個(gè)getFavNumber2Value()方法來返回一個(gè)硬編碼的數(shù)組作為復(fù)選框項(xiàng) -

package com.yiibai;


import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.Map;

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

@ManagedBean(name="user")
@SessionScoped
public class UserBean{
  public String[] favNumber2;

  public String[] getFavNumber2() {
    return favNumber2;
  }

  public void setFavNumber2(String[] favNumber2) {
    this.favNumber2 = favNumber2;
  }
  //Generated by Array
  public String[] getFavNumber2Value() {

    favNumber2 = new String[5];
    favNumber2[0] = "Number2 - 1";
    favNumber2[1] = "Number2 - 2";
    favNumber2[2] = "Number2 - 3";
    favNumber2[3] = "Number2 - 4";
    favNumber2[4] = "Number2 - 5";

    return favNumber2;
  }
  public String getFavNumber2InString() {
    return Arrays.toString(favNumber2);
  }    
}

以下是文件：index.xhtml 中的代碼 -

<?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:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core">
    <h:body>
      <h:form>
      <h2>Mutiple checkboxes</h2>

      Generated by Array :
       <h:selectManyCheckbox value="#{user.favNumber2}">
         <f:selectItems value="#{user.favNumber2Value}" />
       </h:selectManyCheckbox>

      <br />

      <h:commandButton value="Submit" action="result" />
    <h:commandButton value="Reset" type="reset" />

      </h:form>

    </h:body>

</html>

由映射生成的復(fù)選框

以下是文件：result.xhtml 中的代碼 -

<?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:h="http://java.sun.com/jsf/html">
    <h:body>
      <h1>JSF 2 checkboxes example</h1>
      <h2>result.xhtml</h2>
      <ol>
        <li>user.favNumber3 : #{user.favNumber3InString}</li>
      </ol>
    </h:body>
</html>

以下是文件：UserBean.java 中的代碼 -

package com.yiibai;


import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.Map;

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

@ManagedBean(name="user")
@SessionScoped
public class UserBean{
  public String[] favNumber3;
  public String[] getFavNumber3() {
    return favNumber3;
  }

  public void setFavNumber3(String[] favNumber3) {
    this.favNumber3 = favNumber3;
  }
  //Generated by Map
  private static Map<String,Object> number3Value;
  static{
    number3Value = new LinkedHashMap<String,Object>();
    number3Value.put("Number3 - 1", "1"); //label, value
    number3Value.put("Number3 - 2", "2");
    number3Value.put("Number3 - 3", "3");
    number3Value.put("Number3 - 4", "4");
    number3Value.put("Number3 - 5", "5");
  }

  public Map<String,Object> getFavNumber3Value() {
    return number3Value;
  }

  public String getFavNumber3InString() {
    return Arrays.toString(favNumber3);
  }    
}

以下是文件：index.xhtml 中的代碼 -

<?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:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      >
    <h:body>
      <h:form>
      <h2>Mutiple checkboxes</h2>

      Generated by Map :
       <h:selectManyCheckbox value="#{user.favNumber3}">
         <f:selectItems value="#{user.favNumber3Value}" />
       </h:selectManyCheckbox>

      <br />

      <h:commandButton value="Submit" action="result" />
    <h:commandButton value="Reset" type="reset" />

      </h:form>

    </h:body>

</html>

復(fù)選框多個(gè)復(fù)選項(xiàng)

以下是文件：UserBean.java 中的代碼 -

package com.yiibai;

import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.Map;

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

@ManagedBean(name="user")
@SessionScoped
public class UserBean{
  public String[] favNumber4;
  public String[] getFavNumber4() {
    return favNumber4;
  }
  public void setFavNumber4(String[] favNumber4) {
    this.favNumber4 = favNumber4;
  }
  public static class Number{
    public String numberLabel;
    public String numberValue;

    public Number(String numberLabel, String numberValue){
      this.numberLabel = numberLabel;
      this.numberValue = numberValue;
    }
    public String getNumberLabel(){
      return numberLabel;
    }
    public String getNumberValue(){
      return numberValue;
    }
  }
  public Number[] number4List;

  public Number[] getFavNumber4Value() {

    number4List = new Number[5];
    number4List[0] = new Number("Number4 - 1", "1");
    number4List[1] = new Number("Number4 - 2", "2");
    number4List[2] = new Number("Number4 - 3", "3");
    number4List[3] = new Number("Number4 - 4", "4");
    number4List[4] = new Number("Number4 - 5", "5");

    return number4List;
  }

  public String getFavNumber4InString() {
    return Arrays.toString(favNumber4);
  }

}

以下是文件：index.xhtml 中的代碼 -

<?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:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core">
    <h:body>
      <h:form>
      <h2>Mutiple checkboxes</h2>

      Generated by Object with var :
       <h:selectManyCheckbox value="#{user.favNumber4}">
         <f:selectItems value="#{user.favNumber4Value}" var="n"
         itemLabel="#{n.numberLabel}" itemValue="#{n.numberValue}" />
       </h:selectManyCheckbox>

      <br />

      <h:commandButton value="Submit" action="result" />
    <h:commandButton value="Reset" type="reset" />

      </h:form>

    </h:body>

</html>

以下是文件：result.xhtml 中的代碼 -

<?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:h="http://java.sun.com/jsf/html"
      >
    <h:body>
      <p>user.favNumber4 : #{user.favNumber4InString}</p>
    </h:body>
</html>