JSF2.0札记

1. Get ContextPath in JSF

In jsp/jsf/html file you can get contextpath using:
?? #{facesContext.externalContext.requestContextPath}
And in bean you can get context path using:
?? FacesContext.getCurrentInstance().getExternalContext().getRequestContextPath()

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NOTE :Most of the JSF components are fully aware of their context paths, so you don't need to explicitly include them. I know that the graphicImage tag is one of them. So you're actually being more clever than you need to be.

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We can get remote address and port if you have HttpServletRequest object something like below:
?? ((HttpServletRequest ) FacesContext.getCurrentInstance().getExternalContext().getRequest()).getRemoteAddr() ;
?? ((HttpServletRequest ) FacesContext.getCurrentInstance().getExternalContext().getRequest()).getRemoteHost() ;
?? ((HttpServletRequest ) FacesContext.getCurrentInstance().getExternalContext().getRequest()).getRemotePort();

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2. URL 传递参数到 JSF 程序中

如果你有下面的URL:?http://your_server/your_app/product.jsf?id=777,? 你可以使用下面的代码来访问所传递的参数 :???

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在JSF 页面上 , 你也可以使用预定义的变量 param 访问同样的参数 , 例如 :??

? <h:outputText?value="#{param ['id']}"?/>

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3. Managed?Bean 中调用另一个 Managed?Bean

FacesContext?facesContext?=?FacesContext.getCurrentInstance();
TestHandler?ush?=?(TestHandler)?facesContext.getApplication().getVariableResolver().resolveVariable(facesContext,??? "testHandler");

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4. Maven开发使用jetty插件 部署JSF2.0的问题：

mvn jetty：run? jetty中使用jetty测试JSF2.0存在问题： Managed Bean中@ManagedBean\@SessionScoped等注解不会生效――原因是没有扫描在/target/目录下的class文件导致（maven项目编译后的class等输出都在target目录中）。

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如果使用mvn jetty：run-war? 就不会有问题 ！！！ （不会自动更新部署新修改的代码）

有时间做个详细的描述......

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