Question

如果我在会话中有值，我需要在会话中获取所有值，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>");
    }
}

如果我得到一组字符串的复选框值。我设置所有在.jsp中选择的值到会话对象。我需要只检索jsp中保存的选定值上面的代码。

Answer 1

public class ConcreteImplementation : AbstractBaseClass<AnotherConcreteImplementation>
{
    public override void Create(AnotherConcreteImplementation param1) // Works because TDerivedClass = AnotherConcreteImplementation 
    {
        ...
    }
}

这段代码也很完美感谢火花回复@karim mohsen

Answer 2

Enumeration<String> attributes = request.getSession().getAttributeNames();
while (attributes.hasMoreElements()) {
    String attribute = attributes.nextElement();
    System.out.println(attribute+" : "+request.getSession().getAttribute(attribute));
}

Answer 3

$ which aws
/home/enanone/.local/bin/aws

此代码适用于jsp

Answer 4

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>");
            }
}

Answer 5

本守则在JSP

中完成 emun = session.getAttributeNames（）; //获取会话％＆gt;中的所有属性名称

Answer 6

如果要获取所有带有Key及其值的Session对象，那么此代码对您来说很好用。

.gitignore

输出

Enumeration keys = session.getAttributeNames();
while (keys.hasMoreElements())
{
  String key = (String)keys.nextElement();
  out.println(key + ": " + session.getValue(key) + "<br>");
}

如何获取所有会话值和名称？

6 个答案: