1.替換img地址

/**
	 * 替換img地址
	 * @param str --  前臺svg字串
	 * @return
     */
	private String transferImgPath(HttpServletRequest request,String str) {
		System.out.println(str);
		String requestURL = request.getRequestURL().toString();
		String requestURI = request.getRequestURI();
		String httpURL = requestURL.replace(requestURI,"");
		String ptn = "(?i)href=\"([^\"]*)\"[^>]*>";
		Pattern p = Pattern.compile(ptn, Pattern.DOTALL);
		Matcher m = p.matcher(str);
		List<String> list = new ArrayList<String>();
		while(m.find()) {
			String imgurl = m.group(1);
			if(!imgurl.contains("http") && !list.contains(imgurl)) {
				str = str.replaceAll(imgurl,httpURL + "/resources/myflow-min/" + imgurl);
			}
			list.add(imgurl);
		}

		return str;
	}
 

    /**
     * 將svg字串轉換為png
     *
     * @param svgCode svg程式碼
     * @param pngFilePath 儲存的路徑
     * @throws TranscoderException svg程式碼異常
     * @throws IOException io錯誤
     */
    public static void convertToPng(String svgCode, String pngFilePath) throws IOException,
            TranscoderException {

        File file = new File(pngFilePath);

        FileOutputStream outputStream = null;
        try {
            file.createNewFile();
            outputStream = new FileOutputStream(file);
            convertToPng(svgCode, outputStream);
        } finally {
            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    /**
     * 將svgCode轉換成png檔案，直接輸出到流中
     *
     * @param svgCode svg程式碼
     * @param outputStream 輸出流
     * @throws TranscoderException 異常
     * @throws IOException io異常
     */
    public static void convertToPng(String svgCode, OutputStream outputStream)
            throws TranscoderException, IOException {
        try {
            byte[] bytes = svgCode.getBytes("utf-8");
            PNGTranscoder t = new PNGTranscoder();
            TranscoderInput input = new TranscoderInput(new ByteArrayInputStream(bytes));
            TranscoderOutput output = new TranscoderOutput(outputStream);
            t.transcode(input, output);
            outputStream.flush();
        } finally {
            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
 

batik-all-1.7.jar
xml-apis-ext.jar