解决highchats导出图片乱码问题

网上很多都是自己写一个servlet，然后url改成自己的。但是servlet只支持IE，在google浏览器上得不到参数值，所以改造servlet成为action。其中需要引入三个jar包。三个jar包在附件。

package com.creditease.ccsp.action;

import java.io.StringReader;


import javax.servlet.ServletOutputStream;

import org.apache.batik.transcoder.Transcoder;
import org.apache.batik.transcoder.TranscoderException;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.batik.transcoder.image.JPEGTranscoder;
import org.apache.batik.transcoder.image.PNGTranscoder;
import org.apache.fop.svg.PDFTranscoder;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;


@Namespace("/manage")
@ParentPackage("manage")
public class ImageExportAction extends ActionImpl{

    /**
     * 
     */
    private static final long serialVersionUID = 7547110498655678209L;
    
    
 
    
    @Action(value = "exportChart", results = { @Result(name = "success", type = "json") }) 
    public String execute() throws Exception {
    	
    	  request.setCharacterEncoding("utf-8");//注意编码
    	  String type = request.getParameter("type");
          String svg = request.getParameter("svg");
          ServletOutputStream out = response.getOutputStream();
          if (null != type && null != svg){
          svg = svg.replaceAll(":rect", "rect"); 
          String ext = "";
          Transcoder t = null;
           
          if (type.equals("image/png")) {
             ext = "png";
             t = new PNGTranscoder();
              
          } else if (type.equals("image/jpeg")) {
             ext = "jpg";
              t = new JPEGTranscoder();
     
          } else if (type.equals("application/pdf")) {
             ext = "pdf";
             t = new PDFTranscoder();
     
          } else if (type.equals("image/svg+xml")) {
             ext = "svg";   
          }
           
          response.addHeader("Content-Disposition", "attachment; filename=chart."+ext);
          response.addHeader("Content-Type", type);
           
             if (null != t){
                TranscoderInput input = new TranscoderInput(new StringReader(svg));
                TranscoderOutput output = new TranscoderOutput(out);
                try {
                   t.transcode(input,output);
                } catch (TranscoderException e){
                   out.print("Problem transcoding stream. See the web logs for more details.");
                   e.printStackTrace();
                }
        
             } else if (ext == "svg"){
                out.print(svg);
             } else {
                out.print("Invalid type: " + type);
             }
          } else {
             response.addHeader("Content-Type", "text/html");
             out.println("Usage:\n\tParameter [svg]: The DOM Element to be converted.\n\tParameter [type]: The destination MIME type for the elment to be transcoded.");
          }
          out.flush();
          out.close();   
          return NONE;
    }




	@Override
	public Object getModel() {
		// TODO Auto-generated method stub
		return null;
	}
    
}