messagecontext.html

j2ee api,很好的api。我这现在有

  <code>MessageContext</code>. </TD>
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<B>Method Detail</B></FONT></TD>
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<A NAME="setProperty(java.lang.String, java.lang.Object)"><!-- --></A><H3>
setProperty</H3>
<PRE>
public void <B>setProperty</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>&nbsp;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>&nbsp;value)</PRE>
<DL>
<DD>Sets the name and value of a property associated with the
  <code>MessageContext</code>. If the <code>MessageContext</code>
  contains a value of the same property, the old value is replaced.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - Name of the property associated with the 
              <code>MessageContext</code><DD><CODE>value</CODE> - Value of the property
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - If some aspect
              of the property is prevents it from being stored
              in the context
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/UnsupportedOperationException.html" title="class or interface in java.lang">UnsupportedOperationException</A></CODE> - If this method is 
              not supported.</DL>
</DD>
</DL>
<HR>

<A NAME="getProperty(java.lang.String)"><!-- --></A><H3>
getProperty</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>getProperty</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>&nbsp;name)</PRE>
<DL>
<DD>Gets the value of a specific property from the 
  <code>MessageContext</code>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - Name of the property whose value is to be
               retrieved
<DT><B>Returns:</B><DD>Value of the property
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if an illegal
              property name is specified</DL>
</DD>
</DL>
<HR>

<A NAME="removeProperty(java.lang.String)"><!-- --></A><H3>
removeProperty</H3>
<PRE>
public void <B>removeProperty</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>&nbsp;name)</PRE>
<DL>
<DD>Removes a property (name-value pair) from the <code>MessageContext</code>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - Name of the property to be removed
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if an illegal
              property name is specified</DL>
</DD>
</DL>
<HR>

<A NAME="containsProperty(java.lang.String)"><!-- --></A><H3>
containsProperty</H3>
<PRE>
public boolean <B>containsProperty</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>&nbsp;name)</PRE>
<DL>
<DD>Returns true if the <code>MessageContext</code> contains a property
  with the specified name.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - Name of the property whose presense is to be
              tested
<DT><B>Returns:</B><DD>Returns true if the MessageContext contains the
          property; otherwise false</DL>
</DD>
</DL>
<HR>

<A NAME="getPropertyNames()"><!-- --></A><H3>
getPropertyNames</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Iterator.html" title="class or interface in java.util">Iterator</A> <B>getPropertyNames</B>()</PRE>
<DL>
<DD>Returns an Iterator view of the names of the properties
  in this <code>MessageContext</code>
<P>
<DD><DL>

<DT><B>Returns:</B><DD>Iterator for the property names</DL>
</DD>
</DL>
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