java - tag is not used

Question

我用MyEclipse编译我的程序，我想实现国际化，所以我选择使用fmt标签。

代码如下:

<fmt:setLocale value="${param.locale }" scope="session" />

书上说${param.locale }可以得到浏览器的default-language。为了改变语言，我使用了两种语言，英语和中文。虽然我将浏览器的default-language设置为英文，但是当我重新加载jsp页面时，语言总是中文。你能告诉我这是怎么回事吗？

完整代码:

<%@ taglib prefix="fmt" uri="java.sun.com/jsp/jstl/fmt"; %> 
<fmt:setLocale value="${param.locale }" scope="session" /> <fmt:setBundlebasename="loginpage"/> <input type="text" id="text1" /> <br/> <input type="password" id="text2" /> <br /> <input type="submit" id="smb" value="<fmt:message key="login_sub" />" />     

Answer 1

不，那不是真的。 EL param 对象将请求参数名称映射到单个值。如果 param.locale 存在，那么您可以通过 fmt:setLocale/> 标签设置 locale。

本文正文 - Formatting and internationalization through custom tags

The locale used by the JSTL tags when formatting data is normally determined by examining the Accept-Language header sent by a user's browser as part of each HTTP request. If no such header is present, then JSTL provides a set of JSP configuration variables you can set to specify a default locale. If these configuration variables have not been set, then the JVM's default locale is used, which is obtained from the operating system the JSP container is running on.

并查看 SO 线程 - How to set JSTL locale from Java code?