BlogJava-咖啡妆 --专注java-随笔分类-dwrhttp://www.blogjava.net/freeman1984/category/42595.htmlhttp://shop59092284.taobao.com/zh-cnThu, 19 Nov 2009 18:05:59 GMTThu, 19 Nov 2009 18:05:59 GMT60DWR ajaxReverse demo 和理解http://www.blogjava.net/freeman1984/archive/2009/11/19/302961.html咖啡妆咖啡妆Thu, 19 Nov 2009 10:28:00 GMThttp://www.blogjava.net/freeman1984/archive/2009/11/19/302961.htmlhttp://www.blogjava.net/freeman1984/comments/302961.htmlhttp://www.blogjava.net/freeman1984/archive/2009/11/19/302961.html#Feedback0http://www.blogjava.net/freeman1984/comments/commentRss/302961.htmlhttp://www.blogjava.net/freeman1984/services/trackbacks/302961.html阅读全文

咖啡妆 2009-11-19 18:28 发表评论
]]>DWR http://www.blogjava.net/freeman1984/archive/2009/08/25/293869.html咖啡妆咖啡妆Tue, 25 Aug 2009 08:31:00 GMThttp://www.blogjava.net/freeman1984/archive/2009/08/25/293869.htmlhttp://www.blogjava.net/freeman1984/comments/293869.htmlhttp://www.blogjava.net/freeman1984/archive/2009/08/25/293869.html#Feedback0http://www.blogjava.net/freeman1984/comments/commentRss/293869.htmlhttp://www.blogjava.net/freeman1984/services/trackbacks/293869.html 

。。。

咖啡妆 2009-08-25 16:31 发表评论
]]>DWR学习及应用(二，forward)http://www.blogjava.net/freeman1984/archive/2009/08/25/293870.html咖啡妆咖啡妆Tue, 25 Aug 2009 06:38:00 GMThttp://www.blogjava.net/freeman1984/archive/2009/08/25/293870.htmlhttp://www.blogjava.net/freeman1984/comments/293870.htmlhttp://www.blogjava.net/freeman1984/archive/2009/08/25/293870.html#Feedback0http://www.blogjava.net/freeman1984/comments/commentRss/293870.htmlhttp://www.blogjava.net/freeman1984/services/trackbacks/293870.html使用dwr我们可以动态请求一个页面内容到当前页：一下是代码：

1，后台方法：

public String getInclude() throws ServletException, IOException {
WebContext ctx = WebContextFactory.get();
System.out.println(ctx.getCurrentPage());
ctx.getHttpServletRequest().setAttribute("test", "hello ,test forward");
return ctx.forwardToString("/iclude.jsp");
}

 

2，dwr配置：

 <create javascript="testinclude" creator="new">
<param name="class" value="com.dwr.TestInclude"/>
</create>

 3，页面：

<html>
<head>
<base href="<%=basePath%>">
<script type="text/javascript" src="dwr/engine.js"></script>
<script type="text/javascript" src="dwr/util.js"></script>
<script type="text/javascript" src="dwr/interface/testinclude.js"></script>
<script type="text/javascript">
function getInClude(){
testinclude.getInclude(
function(data){
dwr.util.setValue("fq",data,{ escapeHtml:false });
}
);
}
</script>
</head>
<body>
<input type="button" value="include page"
onclick="javascript:getInClude()" />
<div id="fq">
</div>
</body>
</html>

 2，其中使用了

WebContext ctx = WebContextFactory.get();

ctx.forwardToString("/iclude.jsp");

查看dwr源代码：

 getServletContext().getRequestDispatcher(url).forward(realRequest, fakeResponse);

 其中：fakeResponse

HttpServletResponse fakeResponse = new SwallowingHttpServletResponse(realResponse, sout, realResponse.getCharacterEncoding());

  而SwallowingHttpServletResponse使用了WriterOutputStream

 public SwallowingHttpServletResponse(HttpServletResponse response, Writer sout, String characterEncoding)
{
super(response);
pout = new PrintWriter(sout);
outputStream = new WriterOutputStream(sout, characterEncoding);
this.characterEncoding = characterEncoding;
}

 WriterOutputStream：也就是对 ServletOutputStream的封装。

public final class WriterOutputStream extends ServletOutputStream

 





咖啡妆 2009-08-25 14:38 发表评论
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