Struts 2 set tag: defines a variable

• Java

Example

<body>
  <!--将表达式user.username的值保存在默认范围中，即action范围-->
  <s:set name="name" value="user.username"/>
  <h4>从默认的action上下文中取出name</h4>
  <s:property value="#name"/>
  <!--将表达式user.username的值保存到session范围中-->
  <s:set name="name" value="user.username" scope="session"/>
  <h4>设定了Session范围中的值并从session范围中取出name</h4>
  <s:property value="#session.name"/>
</body>
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