📄 httpsession.html
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<TD><CODE><B><A HREF="../../../javax/servlet/http/HttpSession.html#getValueNames()">getValueNames</A></B>()</CODE><BR> <B>Deprecated.</B> <I>As of Version 2.2, this method is replaced by <A HREF="../../../javax/servlet/http/HttpSession.html#getAttributeNames()"><CODE>getAttributeNames()</CODE></A></I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/http/HttpSession.html#invalidate()">invalidate</A></B>()</CODE><BR> Invalidates this session then unbinds any objects bound to it.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/http/HttpSession.html#isNew()">isNew</A></B>()</CODE><BR> Returns <code>true</code> if the client does not yet know about the session or if the client chooses not to join the session. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/http/HttpSession.html#putValue(java.lang.String, java.lang.Object)">putValue</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> value)</CODE><BR> <B>Deprecated.</B> <I>As of Version 2.2, this method is replaced by <A HREF="../../../javax/servlet/http/HttpSession.html#setAttribute(java.lang.String, java.lang.Object)"><CODE>setAttribute(java.lang.String, java.lang.Object)</CODE></A></I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/http/HttpSession.html#removeAttribute(java.lang.String)">removeAttribute</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name)</CODE><BR> Removes the object bound with the specified name from this session. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/http/HttpSession.html#removeValue(java.lang.String)">removeValue</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name)</CODE><BR> <B>Deprecated.</B> <I>As of Version 2.2, this method is replaced by <A HREF="../../../javax/servlet/http/HttpSession.html#removeAttribute(java.lang.String)"><CODE>removeAttribute(java.lang.String)</CODE></A></I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/http/HttpSession.html#setAttribute(java.lang.String, java.lang.Object)">setAttribute</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> value)</CODE><BR> Binds an object to this session, using the name specified. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/servlet/http/HttpSession.html#setMaxInactiveInterval(int)">setMaxInactiveInterval</A></B>(int interval)</CODE><BR> Specifies the time, in seconds, between client requests before the servlet container will invalidate this session. </TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="getCreationTime()"><!-- --></A><H3>getCreationTime</H3><PRE>public long <B>getCreationTime</B>()</PRE><DL><DD>Returns the time when this session was created, measured in milliseconds since midnight January 1, 1970 GMT.<P><DD><DL><DT><B>Returns:</B><DD>a <code>long</code> specifying when this session was created, expressed in milliseconds since 1/1/1970 GMT<DT><B>Throws:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalStateException.html" title="class or interface in java.lang">IllegalStateException</A></CODE> - if this method is called on an invalidated session</DL></DD></DL><HR><A NAME="getId()"><!-- --></A><H3>getId</H3><PRE>public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>getId</B>()</PRE><DL><DD>Returns a string containing the unique identifier assigned to this session. The identifier is assigned by the servlet container and is implementation dependent.<P><DD><DL><DT><B>Returns:</B><DD>a string specifying the identifier assigned to this session<DT><B>Throws:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalStateException.html" title="class or interface in java.lang">IllegalStateException</A></CODE> - if this method is called on an invalidated session</DL></DD></DL><HR><A NAME="getLastAccessedTime()"><!-- --></A><H3>getLastAccessedTime</H3><PRE>public long <B>getLastAccessedTime</B>()</PRE><DL><DD>Returns the last time the client sent a request associated with this session, as the number of milliseconds since midnight January 1, 1970 GMT, and marked by the time the container received the request. <p>Actions that your application takes, such as getting or setting a value associated with the session, do not affect the access time.<P><DD><DL><DT><B>Returns:</B><DD>a <code>long</code> representing the last time the client sent a request associated with this session, expressed in milliseconds since 1/1/1970 GMT<DT><B>Throws:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalStateException.html" title="class or interface in java.lang">IllegalStateException</A></CODE> - if this method is called on an invalidated session</DL></DD></DL><HR><A NAME="getServletContext()"><!-- --></A><H3>getServletContext</H3><PRE>public <A HREF="../../../javax/servlet/ServletContext.html" title="interface in javax.servlet">ServletContext</A> <B>getServletContext</B>()</PRE><DL><DD>Returns the ServletContext to which this session belongs.<P><DD><DL><DT><B>Returns:</B><DD>The ServletContext object for the web application<DT><B>Since:</B></DT> <DD>2.3</DD></DL></DD></DL><HR><A NAME="setMaxInactiveInterval(int)"><!-- --></A><H3>setMaxInactiveInterval</H3><PRE>public void <B>setMaxInactiveInterval</B>(int interval)</PRE><DL><DD>Specifies the time, in seconds, between client requests before the servlet container will invalidate this session. A negative time indicates the session should never timeout.<P><DD><DL><DT><B>Parameters:</B><DD><CODE>interval</CODE> - An integer specifying the number of seconds</DL></DD></DL><HR><A NAME="getMaxInactiveInterval()"><!-- --></A><H3>getMaxInactiveInterval</H3><PRE>public int <B>getMaxInactiveInterval</B>()</PRE><DL><DD>Returns the maximum time interval, in seconds, that the servlet container will keep this session open between client accesses. After this interval, the servlet container will invalidate the session. The maximum time interval can be set with the <code>setMaxInactiveInterval</code> method. A negative time indicates the session should never timeout.<P><DD><DL><DT><B>Returns:</B><DD>an integer specifying the number of seconds this session remains open between client requests<DT><B>See Also:</B><DD><A HREF="../../../javax/servlet/http/HttpSession.html#setMaxInactiveInterval(int)"><CODE>setMaxInactiveInterval(int)</CODE></A></DL></DD></DL><HR><A NAME="getSessionContext()"><!-- --></A><H3>getSessionContext</H3><PRE>public <A HREF="../../../javax/servlet/http/HttpSessionContext.html" title="interface in javax.servlet.http">HttpSessionContext</A> <B>getSessionContext</B>()</PRE><DL><DD><B>Deprecated.</B> <I>As of Version 2.1, this method is deprecated and has no replacement. It will be removed in a future version of the Java Servlet API.</I><P><DD><DL></DL></DD></DL><HR><A NAME="getAttribute(java.lang.String)"><!-- --></A><H3>getAttribute</H3><PRE>public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>getAttribute</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name)</PRE><DL><DD>Returns the object bound with the specified name in this session, or <code>null</code> if no object is bound under the name.<P><DD><DL><DT><B>Parameters:</B><DD><CODE>name</CODE> - a string specifying the name of the object<DT><B>Returns:</B><DD>the object with the specified name<DT><B>Throws:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalStateException.html" title="class or interface in java.lang">IllegalStateException</A></CODE> - if this method is called on an invalidated session</DL></DD></DL><HR><A NAME="getValue(java.lang.String)"><!-- --></A><H3>getValue</H3><PRE>public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>getValue</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name)</PRE><DL><DD><B>Deprecated.</B> <I>As of Version 2.2, this method is⌨️ 快捷键说明
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