java 如何获取所有会话值和名称？
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时间：2020-11-02 21:34:42 来源:igfitidea点击:
How to get all Session values and names?
提问by Manoj Krishna
if i have values in a session and i need to get all the values in a session like
如果我在会话中有值并且我需要在会话中获取所有值，例如
String[] name = request.getParameterValues("values");
HttpSession session = request.getSession();
for(String temp:name)
{
if(temp.equalsIgnoreCase("a"))
{
session.setAttribute("a", temp);
out.println("a is Running<br>");
}
if(temp.equalsIgnoreCase("b"))
{
session.setAttribute("b", temp);
out.println("b is Running<br>");
}
if(temp.equalsIgnoreCase("c"))
{
session.setAttribute("c", temp);
out.println("c is Running<br>");
}
if(temp.equalsIgnoreCase("d"))
{
session.setAttribute("d", temp);
out.println("d is Running<br>");
}
if(temp.equalsIgnoreCase("e"))
{
session.setAttribute("e", temp);
out.println("e is Running<br>");
}
if(temp.equalsIgnoreCase("f"))
{
session.setAttribute("f", temp);
out.println("f is Running<br>");
}
}
- if I get a set of checkbox values to a string. Im setting all the values which are selected in a .jsp to a session object. I need to retrieve only the selected values in a jsp which are saved in the above code.
- 如果我将一组复选框值转换为字符串。我将在 .jsp 中选择的所有值设置为会话对象。我只需要检索保存在上述代码中的 jsp 中的选定值。
回答by Max CodeSmith
Enumeration<String> attributes = request.getSession().getAttributeNames();
while (attributes.hasMoreElements()) {
String attribute = (String) attributes.nextElement();
System.out.println(attribute+" : "+request.getSession().getAttribute(attribute));
}
回答by Manoj Krishna
Enumeration e = (Enumeration) (session.getAttributeNames());
while ( e.hasMoreElements())
{
Object tring;
if((tring = e.nextElement())!=null)
{
out.println(session.getValue((String) tring));
out.println("<br/>");
}
}
this code is also working perfectly thanks for the spark reply @karim mohsen
这段代码也工作得很好，感谢火花回复@karim mohsen
回答by javed alam
This Code is done in JSP
此代码是在 JSP 中完成的
emun= session.getAttributeNames(); // 获取会话中的所有属性名称 %>回答by karim mohsen
Enumeration attributeNames = session.getAttributeNames();
while (attributeNames.hasMoreElements()) {
String temp= attributeNames.nextElement();
if(temp.equalsIgnoreCase("a"))
{
session.setAttribute("a", temp);
out.println("a is Running<br>");
}
if(temp.equalsIgnoreCase("b"))
{
session.setAttribute("b", temp);
out.println("b is Running<br>");
}
if(temp.equalsIgnoreCase("c"))
{
session.setAttribute("c", temp);
out.println("c is Running<br>");
}
if(temp.equalsIgnoreCase("d"))
{
session.setAttribute("d", temp);
out.println("d is Running<br>");
}
if(temp.equalsIgnoreCase("e"))
{
session.setAttribute("e", temp);
out.println("e is Running<br>");
}
if(temp.equalsIgnoreCase("f"))
{
session.setAttribute("f", temp);
out.println("f is Running<br>");
}
}
