Flex端使用alivepdf直接导出PDF文件：测试中文有乱码

import org.alivepdf.colors.RGBColor;import org.alivepdf.data.Grid;import org.alivepdf.data.GridColumn;import org.alivepdf.display.Display;import org.alivepdf.drawing.Joint;import org.alivepdf.fonts.FontFamily;import org.alivepdf.fonts.Style;import org.alivepdf.layout.Align;import org.alivepdf.layout.Orientation;import org.alivepdf.layout.Size;import org.alivepdf.layout.Unit;import org.alivepdf.pages.Page;import org.alivepdf.pdf.PDF;import org.alivepdf.saving.Download;import org.alivepdf.saving.Method;			protected var claimPDF:PDF;			protected function exportPdf():void {				claimPDF = new PDF(Orientation.LANDSCAPE, Unit.MM, Size.A4);//创建PDF实例								claimPDF.setDisplayMode (Display.FULL_WIDTH);//设置整个页面				claimPDF.setTitle("这是一个标题");				claimPDF.addPage();//添加一页（默认第一页）				//添加图片流				claimPDF.textStyle(new RGBColor(0x0),1);				//				claimPDF.setFont(FontFamily.ARIAL , 13);//设置字体样式、大小								var idCol:GridColumn=new GridColumn("碳排放","percent",20,Align.CENTER,Align.CENTER);				var nameCol:GridColumn=new GridColumn("NAME","name",50,Align.CENTER,Align.CENTER);				var ageCol:GridColumn=new GridColumn("AGE","data",40,Align.CENTER,Align.CENTER);				var columns:Array=new Array(idCol,nameCol,ageCol);				var grid:Grid = new Grid(treeSource.children.toArray(), 300, 300,					new RGBColor (0xCCCCCC), new RGBColor (0xCCCCCC), 					false, new RGBColor ( 0x0 ),1, Joint.MITER);				grid.columns=columns;								claimPDF.addGrid(grid,10,160);								claimPDF.save(Method.REMOTE,"PDFServlet",Download.ATTACHMENT,"aaa.pdf");			}

public void doPost(HttpServletRequest request, HttpServletResponse response)			throws ServletException, IOException {		response.setContentType("text/html;charset=UTF-8");		int i = 0;		int k = 0;		int maxLength = request.getContentLength();// 获取请求的内容		byte[] bytes = new byte[maxLength];// 转换byte数组		String method = request.getParameter("method");		String name = request.getParameter("name");// 请求的文件名，aaa.pdf		ServletInputStream si = request.getInputStream();		while (true) {// 循环读取文件流			k = si.read(bytes, i, maxLength);			i += k;			if (k <= 0)				break;		}		if (bytes != null) {			ServletOutputStream stream = response.getOutputStream();// 实例化			response.setContentType("application/pdf");// 内容类型			response.setCharacterEncoding("UTF-8");// 编码方式			response.setContentLength(bytes.length);// 设置内容长度			response.setHeader("Content-Disposition", method + ";filename="					+ name);			stream.write(bytes);// 写入			stream.flush();			stream.close();// 关闭流		} else {			response.setContentType("text");			response.getWriter().write("bytes is null");		}	}