config.html

此文件是关于流的应用

<DT><B>Parameters:</B><DD><CODE>context</CODE> - Servlet context in which the configuration variable is
 to be looked up<DD><CODE>name</CODE> - Configuration variable name
<DT><B>Returns:</B><DD>The <tt>java.lang.Object</tt> associated with the configuration
 variable, or null if it is not defined.</DL>
</DD>
</DL>
<HR>

<A NAME="set(javax.servlet.jsp.PageContext, java.lang.String, java.lang.Object, int)"><!-- --></A><H3>
set</H3>
<PRE>
public static void <B>set</B>(javax.servlet.jsp.PageContext&nbsp;pc,
                       java.lang.String&nbsp;name,
                       java.lang.Object&nbsp;value,
                       int&nbsp;scope)</PRE>
<DL>
<DD>Sets the value of a configuration variable in the given scope.

 <p> Setting the value of a configuration variable is performed as if
 each scope had its own namespace, that is, the same configuration
 variable name in one scope does not replace one stored in a different
 scope.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>pc</CODE> - Page context in which the configuration variable is to be set<DD><CODE>name</CODE> - Configuration variable name<DD><CODE>value</CODE> - Configuration variable value<DD><CODE>scope</CODE> - Scope in which the configuration variable is to be set</DL>
</DD>
</DL>
<HR>

<A NAME="set(javax.servlet.ServletRequest, java.lang.String, java.lang.Object)"><!-- --></A><H3>
set</H3>
<PRE>
public static void <B>set</B>(javax.servlet.ServletRequest&nbsp;request,
                       java.lang.String&nbsp;name,
                       java.lang.Object&nbsp;value)</PRE>
<DL>
<DD>Sets the value of a configuration variable in the "request" scope.

 <p> Setting the value of a configuration variable is performed as if
 each scope had its own namespace, that is, the same configuration
 variable name in one scope does not replace one stored in a different
 scope.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>request</CODE> - Request object in which the configuration variable is to
 be set<DD><CODE>name</CODE> - Configuration variable name<DD><CODE>value</CODE> - Configuration variable value</DL>
</DD>
</DL>
<HR>

<A NAME="set(javax.servlet.http.HttpSession, java.lang.String, java.lang.Object)"><!-- --></A><H3>
set</H3>
<PRE>
public static void <B>set</B>(javax.servlet.http.HttpSession&nbsp;session,
                       java.lang.String&nbsp;name,
                       java.lang.Object&nbsp;value)</PRE>
<DL>
<DD>Sets the value of a configuration variable in the "session" scope.

 <p> Setting the value of a configuration variable is performed as if
 each scope had its own namespace, that is, the same configuration
 variable name in one scope does not replace one stored in a different
 scope.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>session</CODE> - Session object in which the configuration variable is to
 be set<DD><CODE>name</CODE> - Configuration variable name<DD><CODE>value</CODE> - Configuration variable value</DL>
</DD>
</DL>
<HR>

<A NAME="set(javax.servlet.ServletContext, java.lang.String, java.lang.Object)"><!-- --></A><H3>
set</H3>
<PRE>
public static void <B>set</B>(javax.servlet.ServletContext&nbsp;context,
                       java.lang.String&nbsp;name,
                       java.lang.Object&nbsp;value)</PRE>
<DL>
<DD>Sets the value of a configuration variable in the "application" scope.

 <p> Setting the value of a configuration variable is performed as if
 each scope had its own namespace, that is, the same configuration
 variable name in one scope does not replace one stored in a different
 scope.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>context</CODE> - Servlet context in which the configuration variable is to
 be set<DD><CODE>name</CODE> - Configuration variable name<DD><CODE>value</CODE> - Configuration variable value</DL>
</DD>
</DL>
<HR>

<A NAME="remove(javax.servlet.jsp.PageContext, java.lang.String, int)"><!-- --></A><H3>
remove</H3>
<PRE>
public static void <B>remove</B>(javax.servlet.jsp.PageContext&nbsp;pc,
                          java.lang.String&nbsp;name,
                          int&nbsp;scope)</PRE>
<DL>
<DD>Removes a configuration variable from the given scope.

 <p> Removing a configuration variable is performed as if each scope had
 its own namespace, that is, the same configuration variable name in one
 scope does not impact one stored in a different scope.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>pc</CODE> - Page context from which the configuration variable is to be
 removed<DD><CODE>name</CODE> - Configuration variable name<DD><CODE>scope</CODE> - Scope from which the configuration variable is to be 
 removed</DL>
</DD>
</DL>
<HR>

<A NAME="remove(javax.servlet.ServletRequest, java.lang.String)"><!-- --></A><H3>
remove</H3>
<PRE>
public static void <B>remove</B>(javax.servlet.ServletRequest&nbsp;request,
                          java.lang.String&nbsp;name)</PRE>
<DL>
<DD>Removes a configuration variable from the "request" scope.

 <p> Removing a configuration variable is performed as if each scope had
 its own namespace, that is, the same configuration variable name in one
 scope does not impact one stored in a different scope.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>request</CODE> - Request object from which the configuration variable is
 to be removed<DD><CODE>name</CODE> - Configuration variable name</DL>
</DD>
</DL>
<HR>

<A NAME="remove(javax.servlet.http.HttpSession, java.lang.String)"><!-- --></A><H3>
remove</H3>
<PRE>
public static void <B>remove</B>(javax.servlet.http.HttpSession&nbsp;session,
                          java.lang.String&nbsp;name)</PRE>
<DL>
<DD>Removes a configuration variable from the "session" scope.

 <p> Removing a configuration variable is performed as if each scope had
 its own namespace, that is, the same configuration variable name in one
 scope does not impact one stored in a different scope.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>session</CODE> - Session object from which the configuration variable is
 to be removed<DD><CODE>name</CODE> - Configuration variable name</DL>
</DD>
</DL>
<HR>

<A NAME="remove(javax.servlet.ServletContext, java.lang.String)"><!-- --></A><H3>
remove</H3>
<PRE>
public static void <B>remove</B>(javax.servlet.ServletContext&nbsp;context,
                          java.lang.String&nbsp;name)</PRE>
<DL>
<DD>Removes a configuration variable from the "application" scope.

 <p> Removing a configuration variable is performed as if each scope had
 its own namespace, that is, the same configuration variable name in one
 scope does not impact one stored in a different scope.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>context</CODE> - Servlet context from which the configuration variable is
 to be removed<DD><CODE>name</CODE> - Configuration variable name</DL>
</DD>
</DL>
<HR>

<A NAME="find(javax.servlet.jsp.PageContext, java.lang.String)"><!-- --></A><H3>
find</H3>
<PRE>
public static java.lang.Object <B>find</B>(javax.servlet.jsp.PageContext&nbsp;pc,
                                    java.lang.String&nbsp;name)</PRE>
<DL>
<DD>Finds the value associated with a specific configuration setting
 identified by its context initialization parameter name.

 <p> For each of the JSP scopes (page, request, session, application),
 get the value of the configuration variable identified by <tt>name</tt>
 using method <tt>get()</tt>. Return as soon as a non-null value is
 found. If no value is found, get the value of the context initialization
 parameter identified by <tt>name</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>pc</CODE> - Page context in which the configuration setting is to be 
 searched<DD><CODE>name</CODE> - Context initialization parameter name of the configuration
 setting
<DT><B>Returns:</B><DD>The <tt>java.lang.Object</tt> associated with the configuration
 setting identified by <tt>name</tt>, or null if it is not defined.</DL>
</DD>
</DL>
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