需要帮助在命令按钮中显示图标图像 [英] Need help to display an icon image in a command button

问题描述

只是一个基本的需要，但不能让它工作。
我想有一个primefaces按钮来显示我的图像，没有任何文本。

Just a basic need but cannot get it to work. I would like to have a primefaces button to display my image, without any text.

但我得到的是一个按钮，只包含一个 ^ 字符，并且不显示大小为16x16的图片。

But what i get is a button that contains only a ^ character and does NOT displaying the image, which only has a size of 16x16.

所以，这是表单按钮：

<p:commandButton image="ui-icon-csv" title="CSV Document" ajax="false">
    <p:dataExporter type="csv" target="gridRPBDetails" 
        fileName="#{tInputBean.exportFilename}" />
</p:commandButton>

---

这是css文件：

---

This is the css file :

.ui-icon-csv {
    background-image: url(images/csv_small.png);
}

---

html的按钮：

---

And this is the generated html for the button :

<button type="submit" onclick=";" 
    name="gridRPBDetails:j_idt82" id="gridRPBDetails:j_idt82" 
    class="ui-button ui-widget ui-state-default ui-corner-all ui-button-text-icon-primary" 
    role="button" aria-disabled="false">
        <span class="ui-button-icon-primary ui-icon ui-icon-csv"></span><span class="ui-button-text">CSV Document</span>
</button>

---

URL，确实显示图片：

---

And to prove the image accessible, i try this URL, and indeed it shows the picture :

http://albert:8080/mywebapp/faces/javax.faces.resource/images/csv_small.png

---

，这些是我的依赖关系：

---

Im using tomcat 7, and these are my dependencies :

<dependency>
    <groupId>org.primefaces</groupId>
    <artifactId>primefaces</artifactId>
    <version>2.2.1</version>
</dependency>
<dependency>
    <groupId>com.sun.faces</groupId>
    <artifactId>jsf-api</artifactId>
    <version>2.0.4-b09</version>
    <scope>compile</scope>
</dependency>
<dependency>
    <groupId>com.sun.faces</groupId>
    <artifactId>jsf-impl</artifactId>
    <version>2.0.4-b09</version>
    <scope>compile</scope>
</dependency>

---

任何想法出了什么问题？

---

Any ideas what went wrong ?

谢谢！

推荐答案

使用firebug进行调查后，犯罪是从我定义的CSS东西。

After some investigation using firebug, i found out that the culprit is from the CSS stuff i defined.

这些都是我做的工作。

JSF按钮：

<p:commandButton image="ui-icon-xls" title="Excel Document" ajax="false">
    <p:dataExporter type="xls" target="gridRPBDetails" 
        fileName="#{tInputBean.exportFilename}" />
</p:commandButton>

---

CSS：

---

The CSS :

.ui-state-default .ui-icon-xls {
    background-image: url(images/excel_small.png);
}

---

html：

---

And here is the generated html :

<button type="submit" title="Excel Document" onclick=";" 
  name="gridRPBDetails:j_idt81" id="gridRPBDetails:j_idt81" 
  class="ui-button ui-widget ui-state-default ui-corner-all ui-button-icon-only" 
  role="button" aria-disabled="false">
    <span class="ui-button-icon-primary ui-icon ui-icon-xls"></span>
    <span class="ui-button-text">ui-button</span>
</button>

---

谢谢！

---

Thank you !

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