AMChart to PNG file - JFreeChart Library use...

AMChart 를 PNG 파일로 저장하는 코드...
org.jfree.chart.ChartUtilities의 writeBufferedImageAsPNG 이용...


import java.awt.Color; import java.awt.Graphics; import java.awt.image.BufferedImage; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * export as image by amcharts * AmChart를 PNG 이미지로 저장. * * 2008. 09. 11 : sarangsai.com **/ public class createImgServlet extends HttpServlet{ private static final long serialVersionUID = 1L; protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { execute(req, resp); } protected void execute(HttpServletRequest request, HttpServletResponse response) throws IOException { String heightStr = request.getParameter("height")==null?"0":request.getParameter("height"); String widthStr = request.getParameter("width")==null?"0":request.getParameter("width"); String filename = request.getParameter("filename")==null?"SaveChart.png":request.getParameter("filename"); int height=Integer.parseInt(heightStr.indexOf(".")==-1?heightStr:heightStr.substring(0,heightStr.indexOf("."))); int width=Integer.parseInt(widthStr.indexOf(".")==-1?widthStr:widthStr.substring(0,widthStr.indexOf("."))); BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics g = image.getGraphics(); String current_row=""; try{ for(int i=0;i<height;i++){ current_row=request.getParameter("r"+i)==null?"":request.getParameter("r"+i); String current_col[]=current_row.split(","); int current_width=1; for(int m=0;m<current_col.length;m++){ String pixel[]=current_col[m].split(":"); if(pixel.length>1){ g.setColor(this.charColor(pixel[0])); g.drawLine(current_width, i, current_width+Integer.parseInt(pixel[1]), i); current_width=current_width+Integer.parseInt(pixel[1]); }else if(pixel.length==1){ g.setColor(this.charColor(pixel[0])); g.drawLine(current_width, i, current_width+1, i); current_width++; } } } }catch(Exception e){ e.printStackTrace(); } g.create(); image.flush(); response.setContentType("image/png"); response.setContentType("APPLICATION/OCTET-STREAM"); response.setHeader("Content-Disposition","attachment; filename=\"" + filename + "\""); ServletOutputStream out = response.getOutputStream(); org.jfree.chart.ChartUtilities.writeBufferedImageAsPNG(out, image); out.close(); } public Color charColor(String hex){ for(int i=0;i<6;i++){ if(hex.length()<6)hex="0"+hex; } int r=this.HtoD(hex.substring(0,2)); int g=this.HtoD(hex.substring(2,4)); int b=this.HtoD(hex.substring(4,6)); Color color = new Color(r,g,b); return color; } public int HtoD(String hex){ return Integer.valueOf(hex, 16); } }
<servlet> <description> </description> <display-name>createImgServlet</display-name> <servlet-name>createImgServlet</servlet-name> <servlet-class>(package path ....)createImgServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>createImgServlet</servlet-name> <url-pattern>/createImgServlet</url-pattern> </servlet-mapping>


amchart의 setting 파일에 다음 내용 추가...
<export_as_image> <file>/createImgServlet?filename=savechart.png</file>