前台：

//远程抄表设备下落图表数据

var Store1 = new Ext.data.Store({

<span style="white-space:pre">		</span>proxy:{

<span style="white-space:pre">			</span>type:'ajax',

<span style="white-space:pre">			</span>url:'/newmaterial/servlet/GetCountChartGoDatas',

<span style="white-space:pre">			</span>reader:{

<span style="white-space:pre">				</span>type:'array'

<span style="white-space:pre">			</span>}<span style="white-space:pre">	</span>

<span style="white-space:pre">		</span>},

<span style="white-space:pre">		</span>fields:[

<span style="white-space:pre">			</span>"System",

<span style="white-space:pre">			</span>{name:"Share",type:"float"}

<span style="white-space:pre">		</span>]

});

Store1.load();

var mychart1 = new Ext.chart.Chart({

<span style="white-space:pre">	</span>store:Store1,

<span style="white-space:pre">	</span>title:'所有物料去向概览',

<span style="white-space:pre">	</span>width:500,

<span style="white-space:pre">	</span>height:500,

<span style="white-space:pre">	</span>insetPadding:50,

<span style="white-space:pre">	</span>legend:{position:"right"},

<span style="white-space:pre">	</span>series:[{

<span style="white-space:pre">		</span>type:'pie',

<span style="white-space:pre">		</span>field:'Share',

<span style="white-space:pre">		</span>showInLegend:true,

<span style="white-space:pre">		</span>highlight:{

<span style="white-space:pre">			</span>segment:{margin:20}

<span style="white-space:pre">		</span>},

<span style="white-space:pre">		</span>label:{

<span style="white-space:pre">			</span>field:'System',

<span style="white-space:pre">			</span>display:'rotate',

<span style="white-space:pre">			</span>contrast:true

<span style="white-space:pre">		</span>},

<span style="white-space:pre">		</span>tips:{

<span style="white-space:pre">			</span>trackMouse:true,

<span style="white-space:pre">			</span>renderer:function(rec,item){

<span style="white-space:pre">				</span>this.update(rec.get("System")+':'+rec.get("Share")+'%');

<span style="white-space:pre">			</span>}

<span style="white-space:pre">		</span>}

<span style="white-space:pre">	</span>

<span style="white-space:pre">	</span>}]

});

后台：

public class GetCountChartGoDatas extends HttpServlet {

	/**

	 * @Fields serialVersionUID :

	 */

	private static final long serialVersionUID = 1L;

	/**

	 * The doGet method of the servlet. <br>

	 *

	 * This method is called when a form has its tag value method equals to get.

	 *

	 * @param request

	 *            the request send by the client to the server

	 * @param response

	 *            the response send by the server to the client

	 * @throws ServletException

	 *             if an error occurred

	 * @throws IOException

	 *             if an error occurred

	 */

	public void doGet(HttpServletRequest request, HttpServletResponse response)

			throws ServletException, IOException {

		request.setCharacterEncoding("utf-8");

		response.setContentType("text/html");

		StringBuffer sb = new StringBuffer();

		NowmaterialDAO nmd = new NowmaterialDAO();

		MaterialDAO md = new MaterialDAO();

		List getlist = nmd.getSession().createCriteria(Nowmaterial.class)

				.setProjection(

						Projections.projectionList()

								.add(Projections.rowCount()).add(

										Projections.groupProperty("material.msCode")))

				.list();

		int total = 0;

		for (int i = 0; i < getlist.size(); i++) {

			Object[] row = (Object[]) getlist.get(i);

			total = total + Integer.parseInt(row[0].toString());

		}

		response.setCharacterEncoding("utf-8");

		sb.append("[");

		for (int i = 0; i < getlist.size(); i++) {

			Object[] row = (Object[]) getlist.get(i);

			List<Material> getonelist = md.findByProperty("msCode", row[1]);

			sb.append("['" + getonelist.get(0).getMsName() + "',"

					+ Float.parseFloat(row[0].toString()) + "],");

		}

		sb.append("]");

		int qu = sb.lastIndexOf(",");

		sb.deleteCharAt(qu);

		response.getWriter().print(sb.toString());

	}

	/**

	 * The doPost method of the servlet. <br>

	 *

	 * This method is called when a form has its tag value method equals to

	 * post.

	 *

	 * @param request

	 *            the request send by the client to the server

	 * @param response

	 *            the response send by the server to the client

	 * @throws ServletException

	 *             if an error occurred

	 * @throws IOException

	 *             if an error occurred

	 */

	public void doPost(HttpServletRequest request, HttpServletResponse response)

			throws ServletException, IOException {

		doGet(request, response);

	}

}