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net.conic.prototype.ajax</FONT>
<BR>
类 AjaxRequest</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../resources/inherit.gif" ALT="继承者 "><A HREF="../../../../net/conic/prototype/ajax/AjaxBase.html" title="net.conic.prototype.ajax 中的类">net.conic.prototype.ajax.AjaxBase</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="继承者 "><B>net.conic.prototype.ajax.AjaxRequest</B>
</PRE>
<DL>
<DT><B>直接已知子类：</B> <DD><A HREF="../../../../net/conic/prototype/ajax/AjaxPeriodicalUpdater.html" title="net.conic.prototype.ajax 中的类">AjaxPeriodicalUpdater</A>, <A HREF="../../../../net/conic/prototype/ajax/AjaxUpdater.html" title="net.conic.prototype.ajax 中的类">AjaxUpdater</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>AjaxRequest</B><DT>extends <A HREF="../../../../net/conic/prototype/ajax/AjaxBase.html" title="net.conic.prototype.ajax 中的类">AjaxBase</A></DL>
</PRE>
<P>
一个普通通用的Ajax请求对象 <br><br><b>JS语法:</b>new Ajax.Request(url,options);
<P>
<P>
<DL>
<DT><B>版本：</B></DT>
<DD>Prototype Document Version 0.1</DD>
<DT><B>作者：</B></DT>
<DD>Frank.Chen (Email:jtjdskq@126.com) <br>http://blog.csdn.net/jkjdskq</DD>
</DL>
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<B>字段摘要</B></FONT></TH>
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<CODE>static java.lang.String[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/conic/prototype/ajax/AjaxRequest.html#Events">Events</A></B></CODE>
<BR>
<a name="AjaxRequest_Events" id="AjaxRequest_Events"></a> ["Uninitialized", "Loading", "Loaded", "Interactive", "Complete"] 此数组中元素的位置分别对应readyState的值,readyState的定义请参考</TD>
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<CODE> java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/conic/prototype/ajax/AjaxRequest.html#transport">transport</A></B></CODE>
<BR>
当前实例内部了的xmlhttpRequest对象,同步请求(asynchronous:false)时候可以用当前成员变量取值</TD>
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<B>构造函数摘要</B></FONT></TH>
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<TD><CODE><B><A HREF="../../../../net/conic/prototype/ajax/AjaxRequest.html#AjaxRequest(java.lang.String, java.lang.Object)">AjaxRequest</A></B>(java.lang.String url,
java.lang.Object options)</CODE>
<BR>
初始化一个AjaxRequest对象,并且执行它.</TD>
</TR>
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<B>方法摘要</B></FONT></TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/conic/prototype/ajax/AjaxRequest.html#dispatchException(java.lang.Object)">dispatchException</A></B>(java.lang.Object e)</CODE>
<BR>
当前Ajax执行出现异常时调用此方法 此方法首先判断从AjaxRequest初始化时传入的options中是否包含onException属性,如果包含则做执行 ,此后再执行AjaxResponders.dispatch("onException", this, exception);</TD>
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<CODE> java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/conic/prototype/ajax/AjaxRequest.html#evalJSON()">evalJSON</A></B>()</CODE>
<BR>
从响应信息头中分离出 JSON 对象,并做执行后把对象返回,此方法主要用于内部调用@see #respondToReadyState() <br><b>这里的JSON 内容是放在信息头中以X-JSON为关键字定义</b></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/conic/prototype/ajax/AjaxRequest.html#evalResponse()">evalResponse</A></B>()</CODE>
<BR>
当响应信息头指示Content-type等于text/javascript时自动执行此方法,此方法主要用于内部调用@see #respondToReadyState()</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/conic/prototype/ajax/AjaxRequest.html#header(java.lang.String)">header</A></B>(java.lang.String name)</CODE>
<BR>
从响应信息中获取指定name的http头,此方法主要用于内部调用@see #respondToReadyState()</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/conic/prototype/ajax/AjaxRequest.html#onStateChange()">onStateChange</A></B>()</CODE>
<BR>
Ajax请求的当前状态发生变化时的触发方法,但readyState==1时不做触发,内部调用.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/conic/prototype/ajax/AjaxRequest.html#request(java.lang.String)">request</A></B>(java.lang.String url)</CODE>
<BR>
执行Ajax请求的主方法,内部调用</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/conic/prototype/ajax/AjaxRequest.html#respondToReadyState()">respondToReadyState</A></B>()</CODE>
<BR>
Ajax请求响应的核心处理方法,内部调用 <br>readyState的定义请参考@see #onStateChange() <br> <b>如果readyState!</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/conic/prototype/ajax/AjaxRequest.html#setRequestHeaders()">setRequestHeaders</A></B>()</CODE>
<BR>
设置清求的信息头,内部调用</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_net.conic.prototype.ajax.AjaxBase"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>从类 net.conic.prototype.ajax.<A HREF="../../../../net/conic/prototype/ajax/AjaxBase.html" title="net.conic.prototype.ajax 中的类">AjaxBase</A> 继承的方法</B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../net/conic/prototype/ajax/AjaxBase.html#responseIsFailure()">responseIsFailure</A>, <A HREF="../../../../net/conic/prototype/ajax/AjaxBase.html#responseIsSuccess()">responseIsSuccess</A>, <A HREF="../../../../net/conic/prototype/ajax/AjaxBase.html#setOptions(java.lang.Object)">setOptions</A></CODE></TD>
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<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>从类 java.lang.Object 继承的方法</B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<P>
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<B>字段详细信息</B></FONT></TH>
</TR>
</TABLE>
<A NAME="Events"><!-- --></A><H3>
Events</H3>
<PRE>
public static java.lang.String[] <B>Events</B></PRE>
<DL>
<DD><a name="AjaxRequest_Events" id="AjaxRequest_Events"></a> ["Uninitialized", "Loading", "Loaded", "Interactive", "Complete"] 此数组中元素的位置分别对应readyState的值,readyState的定义请参考
<P>
<DL>
<DT><B>另请参见：</B><DD><A HREF="../../../../net/conic/prototype/ajax/AjaxRequest.html#onStateChange()"><CODE>onStateChange()</CODE></A></DL>
</DL>
<HR>
<A NAME="transport"><!-- --></A><H3>
transport</H3>
<PRE>
public java.lang.Object <B>transport</B></PRE>
<DL>
<DD>当前实例内部了的xmlhttpRequest对象,同步请求(asynchronous:false)时候可以用当前成员变量取值
<P>
<DL>
</DL>
</DL>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>构造函数详细信息</B></FONT></TH>
</TR>
</TABLE>
<A NAME="AjaxRequest(java.lang.String, java.lang.Object)"><!-- --></A><H3>
AjaxRequest</H3>
<PRE>
public <B>AjaxRequest</B>(java.lang.String url,
java.lang.Object options)</PRE>
<DL>
<DD>初始化一个AjaxRequest对象,并且执行它. <br><br><b>JS语法:</b> new Ajax.Request(url,options);
<P>
<DL>
<DT><B>参数：</B><DD><CODE>url</CODE> - Ajax请求地址<DD><CODE>options</CODE> - Ajax请求的附加参数 <ul> <li>method: 提交方式get,post; 默认post <li>asynchronous: 异步提交标记. true-异步执行;false-同步执行; 默认true <li>parameters: 提交的参数集合(querystring);默认为空; <li>requestHeaders: 提交的参数头 <li>postBody: 提交的主体; 如果method=post,但会判断此项有没有值,如果没值就自动取parameters的值 <li>onException: 当执行request出现异常时的执行体; 格式: function((this, exception){} <li>onSuccess,onFailure: 请求响应执行成功或者失败时调用的方法,格式: function(xmlhttprequest, json){} <li>"on" + http状态码 格式: function(xmlhttprequest, json){} <li>"on" + <a href="#AjaxRequest_Events">AjaxRequest.Events[readyState]</a> 格式: function(xmlhttprequest, json){} </ul></DL>
</DL>
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<A NAME="request(java.lang.String)"><!-- --></A><H3>
request</H3>
<PRE>
protected void <B>request</B>(java.lang.String url)</PRE>
<DL>
<DD>执行Ajax请求的主方法,内部调用
<P>
<DD><DL>
<DT><B>参数：</B><DD><CODE>url</CODE> - 请求的地址</DL>
</DD>
</DL>
<HR>
<A NAME="setRequestHeaders()"><!-- --></A><H3>
setRequestHeaders</H3>
<PRE>
protected void <B>setRequestHeaders</B>()</PRE>
<DL>
<DD>设置清求的信息头,内部调用
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="onStateChange()"><!-- --></A><H3>
onStateChange</H3>
<PRE>
protected void <B>onStateChange</B>()</PRE>
<DL>
<DD>Ajax请求的当前状态发生变化时的触发方法,但readyState==1时不做触发,内部调用. 它会转调用#respondToReadyState方法. <br><b> readyState的定义如下(转自xmlhttp.cn): </b> <table class="t1" border="1" cellpadding="3"> <tr> <td>0 (未初始化)</td><td>对象已建立，但是尚未初始化（尚未调用open方法）</td> </tr> <tr> <td>1 (初始化)</td><td>对象已建立，尚未调用send方法</td> </tr> <tr> <td>2 (发送数据)</td><td>send方法已调用，但是当前的状态及http头未知</td> </tr> <tr> <td>3 (数据传送中)</td><td>已接收部分数据，因为响应及http头不全，这时通过responseBody和responseText获取部分数据会出现错误，</td> </tr> <tr> <td>4 (完成)</td><td>数据接收完毕,此时可以通过通过responseBody和responseText获取完整的回应数据</td> </tr> </table>
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="header(java.lang.String)"><!-- --></A><H3>
header</H3>
<PRE>
public java.lang.String <B>header</B>(java.lang.String name)</PRE>
<DL>
<DD>从响应信息中获取指定name的http头,此方法主要用于内部调用@see #respondToReadyState()
<P>
<DD><DL>
<DT><B>参数：</B><DD><CODE>name</CODE> - 指定name
<DT><B>返回：</B><DD>xmlhttp请求结束后,根据指定的name返回相应的head信息</DL>
</DD>
</DL>
<HR>
<A NAME="evalJSON()"><!-- --></A><H3>
evalJSON</H3>
<PRE>
public java.lang.Object <B>evalJSON</B>()</PRE>
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