Open Flash Chart2报表问题

Open Flash Chart2 调用struts action 问题

jsp如下:
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<html>
<head>

<script type="text/javascript" src="js/swfobject.js"></script>
<script type="text/javascript" src="js/json2.js"></script>
<script type="text/javascript">

swfobject.embedSWF(
"open-flash-chart.swf",
"my_chart",
"40%",
"40%",
"9.0.0",
"expressInstall.swf",
{"data-file":"<%=request.getContextPath()%>/testAction.do"},
{wmode:"transparent"});
</script>

</head>
<body>
<p>Hello World</p>
<div id="my_chart"></div>
</body>
</html>

其中<%=request.getContextPath()%>/testAction.do就是指定的我们的Action的路径。
这个是否应该在格拉struts-config.xml 进行相应的设定

  </action>
    <action  path="/testAction"
             validate="false"
             type="jp.co.struts.action.OfcAction">
      </action>
Struts Action：
try{

BarChart chart = new BarChart(BarChart.Style. GLASS ); // 设置条状图样式

//FilledBarChart chart = new FilledBarChart("red","blue");// 设置条状图样式

//String sMax = "10000" ;

long max = 900; // //Y 轴最大值

Map<String,Long> map = new HashMap<String,Long>();

map.put( "5" , new Long(50));

map.put( "6" , new Long(45));

map.put( "7" , new Long(60));

map.put( "8" , new Long(30));

map.put( "9" , new Long(80));

map.put( "10" , new Long(500));

map.put( "11" , new Long(800));

map.put( "12" , new Long(200));

XAxis x = new XAxis(); // X 轴

int i = 5;

for (String key:map.keySet()){

x.addLabels(i+"月份"); // x 轴的文字

Bar bar = new Bar(map.get(""+i), " 万元 " );

i++;

bar.setColour( "0x336699" ); // 颜色

bar.setTooltip(map.get(""+i) + " 万元 " ); // 鼠标移动上去后的提示

chart.addBars(bar); // 条标题，显示在 x 轴上

}

Chart flashChart = new Chart();

flashChart.addElements(chart); // 把柱图加入到图表

YAxis y = new YAxis();  //y 轴

y.setMax(max+10.0); //y 轴最大值

y.setSteps(max/10*1.0); // 步进

flashChart.setYAxis(y);

flashChart.setXAxis(x);

String json = flashChart.toString();

response.setContentType( "application/json-rpc;charset=utf-8" );

response.setHeader( "Cache-Control" , "no-cache" );

response.setHeader( "Expires" , "0" );

response.setHeader( "Pragma" , "No-cache" );

response.getWriter().print(json);// 写到客户端

}catch(Exception ex){
ex.printStackTrace();
}

return null;
}

在网上找了很多资料可还是没能调用成功，那位高手请指点一下非常感谢！ --------------------编程问答--------------------

补充：Java ,  Java相关