Java导出Highcharts生成的图表为图片源码

本文转载自：http://blog.csdn.net/dengsilinming/article/details/7352054

需要的jar包:

需要的js文件:(可以通过http://www.highcharts.com/download下载highcharts对应的js文件)

下面是一些主要部分

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <servlet>
    <description>This is the description of my J2EE component</description>
    <display-name>This is the display name of my J2EE component</display-name>
    <servlet-name>SaveAsImage</servlet-name>
    <servlet-class>com.foxconn.highcharts.demo.SaveAsImage</servlet-class>
  </servlet>  

  <servlet-mapping>
    <servlet-name>SaveAsImage</servlet-name>
    <url-pattern>/SaveAsImage</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>basic_line.jsp</welcome-file>
  </welcome-file-list>
</web-app>

servlet部分

package com.foxconn.highcharts.demo;  

import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.StringReader;  

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;  

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;  

public class SaveAsImage extends HttpServlet {  

    /**
     *
     */
    private static final long serialVersionUID = 1L;  

    /**
     * Constructor of the object.
     */
    public SaveAsImage() {
        super();
    }  

    /**
     * Destruction of the servlet. <br>
     */
    public void destroy() {
        super.destroy(); // Just puts "destroy" string in log
    }  

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doPost(request, response);
    }  

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {  

        /*导成pdf做了很久，但还是没能做出来，因为一直报
        * java.lang.NoSuchMethodError: org.apache.avalon.framework.configuration.DefaultConfiguration.<init>(Ljava/lang/String;)V的错误，
        * 如果你知道如何解决这个错误，请告诉我一下，在此先谢过了。现在已经可以正确地将图片导成pdf了，程序是没有问题的
        * */
        request.setCharacterEncoding("utf-8");//设置编码，解决乱码问题
        String type = request.getParameter("type");
        String svg = request.getParameter("svg");
        String filename = request.getParameter("filename");
        filename = filename==null?"chart":filename;
        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 =(Transcoder) new PDFTranscoder();//我将这儿的注释去掉了，因为导成pdf的问题已经解决
            } else if(type.equals("image/svg+xml"))
                ext = "svg";
            response.addHeader("Content-Disposition", "attachment; filename="+ filename + "."+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.equals("svg")) {
            //  out.print(svg);
                OutputStreamWriter writer = new OutputStreamWriter(out, "UTF-8");
                writer.append(svg);
                writer.close();
            } 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();
    }  

    /**
     * Initialization of the servlet. <br>
     *
     * @throws ServletException if an error occurs
     */
    public void init() throws ServletException {
        // Put your code here
    }  

} 

jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Basic Line</title>
<script src="js/jquery.min.js" type="text/javascript"></script>
    <script src="js/excanvas.compiled.js" type="text/javascript"></script>
    <script src="js/highcharts.js" type="text/javascript"></script>  

    <script src="js/highcharts.src.js" type="text/javascript"></script>
    <script type="text/javascript" src="js/exporting.js"></script>
    <script type="text/javascript">
        var chart;
        $(document).ready(function(){
            chart = new Highcharts.Chart({
                chart: {
                    renderTo: 'container',
                    defaultSeriesType: 'line',
                    marginRight: 130,
                    marginBottom: 25
            },
            title: {
                text: 'Monthly Average Temperature',
                x: -20    //center
            },
            subtitle: {
                text: '测试中文乱码',
                x: -20
            },
            xAxis: {
                categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
                                'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
            },
            yAxis: {
                title: {
                    text: 'Temperature (°C)'
                },
                plotLines: [{
                    value: 0,
                    width: 1,
                    color: '#808080'
                }]
            },
            exporting:{
                filename:'chart',
                url:'http://localhost:8080/HighChartsDemo/SaveAsImage'//这里是一个重点哦,也可以修改exporting.js中对应的url
            },
            tooltip: {
                formatter: function(){
                    return '<b>' + this.series.name + '</b><br/>' +
                    this.x + ': ' + this.y + '°C';
                }
            },
            legend: {
                layout: 'vertical',
                align: 'right',
                verticalAlign: 'middle',
                x: 10,
                y: 100,
                borderWidth: 0
            },
            series: [{
                name: 'Tokyo',
                data: [7.0, 6.9, 9.5, 14.5, 18.2, 21.5, 25.2, 26.5, 23.3, 18.3, 13.9, 9.6]
            },{
                name: 'New York',
                data: [-0.2, 0.8, 5.7, 11.3, 17.0, 22.0, 24.8, 24.1, 20.1, 14.1, 8.6, 2.5]
            },{
                name: 'Berlin',
                data: [-0.9, 0.6, 3.5, 8.4, 13.5, 17.0, 18.6, 17.9, 14.3, 9.0, 3.9, 1.0]
            },{
                name: 'London',
                data: [3.9, 4.2, 5.7, 8.5, 11.9, 15.2, 17.0, 16.6, 14.2, 10.3, 6.6, 4.8]
            }]
            });
        });
    </script>
</head>
<body>
    <div id="container" style="width: 100%; height: 400px"></div>
</body>
</html>  

项目源码可以通过点此下载

注意：请下载源码的同学，将源码中的

/* else if (type.equals("application/pdf")) {
                ext = "pdf";
                t =(Transcoder) new PDFTranscoder();
            }*/   

上面的注释去掉，程序是可以成功导出pdf的。