Java动态获取与解析XML数据示例

//Java代码
public void getXml()
{
ServletActionContext.getResponse().setCharacterEncoding("UTF-8");
ServletActionContext.getResponse().setContentType("application/xml");
  //获取数据
        StringBuffer jsonString =new StringBuffer();
        //jsonString.append("{");
       // jsonString.append("success:true,");
        jsonString.append("<?xml version=\"1.0\" encoding=\"utf-8\" ?> <fieldList><cmrId>1</cmrId><cmrCmpId>1</cmrCmpId><cmrName>测试数据cmrName</cmrName><cmrFileName>3.bmp</cmrFileName><cmrOrderVal>123</cmrOrderVal><cmrWidth>300</cmrWidth><cmrHeight>400</cmrHeight><cmrAlt>123</cmrAlt></fieldList>");
       // jsonString.append("}");
PrintWriter out;
try {
out = ServletActionContext.getResponse().getWriter();
out.print(jsonString);
out.flush();
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}

//Ext代码，fields需要动态生成
Ext.define('Fields', {
    extend: 'Ext.data.Model',
    fields: [
     'cmrId',
        'cmrCmpId',
        'cmrName', 
        'cmrFileName',