Freemarker 取cookie,request,session(转)

1，cookie.

<#assign

<#assign cookies = request.getCookies()>
<#list cookies as cookie>
<#if cookie.name = "userName">
${cookie.name}
${cookie.value}
</#if>
</#list>

2，request.

<#if Request["shoppingCart"]?exists>
<#assign shoppingCart = Request["shoppingCart"]>

3，session.

<#if Session["shoppingCart"]?exists>
<#assign shoppingCart = Session["shoppingCart"]>

action中：

HttpServletRequest request = ServletActionContext.getRequest();
   request.getSession().setAttribute("pathtu", filepath);

ftl页面：

${Session["pathtu"]?default("Session")}

读取堆栈：

<#assign code=((stack.findString("#parameters['code']"))?default('001'))/>

 

下面介绍访问应用程序各范围属性的语法示例：

Application范围

假定Application范围有一个属性 myApplicationAttribute :

java 代码

<#if Application.myApplicationAttribute?exists>
          ${Application.myApplicationAttribute}
if>

或

java 代码
<@s.property value="%{#application.myApplicationAttribute}" />

Session范围

假定会话范围内有一个属性mySessionAttribute:

java 代码

<#if Session.mySessionAttribute?exists>
          ${Session.mySessionAttribute}
if>

或

java 代码

<@s.property value="%{#session.mySessionAttribute}" />

Request范围

假定请求范围有一个属性myRequestAttribute

java 代码

<#if Request.myRequestAttribute?exists>
           ${Request.myRequestAttribute}
if>

或

java 代码
<@s.property value="%{#request.myRequestAttribute}" />

Request参数

假定请求参数myParameter

java 代码
<#if Parameters.myParameter?exists>
          ${Parameters.myParameter}
if>

or

java 代码
<@s.property value="%{#parameters.myParameter}" />

Context参数

假定框架上下文有一参数myContextParam

java 代码
${stack.findValue('#myContextParam')}

或

java 代码

<@s.property value="%{#myContextParam}" />

 

 

判断一个数据是否为null,使用 <#if common.username??>

读cookie

<#assign cookies = request.getCookies()>
<#list cookies as cookie>
<#if cookie.name = "userName">
${cookie.name}
${cookie.value}
</#if>
</#list>

评论

1 楼 手指头 2012-03-19  

话说怎么不能用？
1，cookie.

<#assign

<#assign cookies = request.getCookies()>
<#list cookies as cookie>
<#if cookie.name = "userName">
${cookie.name}
${cookie.value}
</#if>
</#list>