Java端使用Batik将SVG转为PNG图片

pom依赖：

<!-- https://mvnrepository.com/artifact/org.apache.xmlgraphics/batik-all -->
<dependency>
    <groupId>org.apache.xmlgraphics</groupId>
    <artifactId>batik-all</artifactId>
    <version>1.10</version>
    <type>pom</type>
</dependency>

<dependency>
    <groupId>org.apache.xmlgraphics</groupId>
    <artifactId>batik-transcoder</artifactId>
    <version>1.14</version>
</dependency>

<dependency>
    <groupId>org.apache.xmlgraphics</groupId>
    <artifactId>batik-codec</artifactId>
    <version>1.14</version>
</dependency>

代码;

import org.apache.batik.transcoder.TranscoderException;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.batik.transcoder.image.ImageTranscoder;
import org.apache.batik.transcoder.image.PNGTranscoder;

import java.io.*;

/**
 * @Author y
 * @Date 
 * @Version 1.0
 */



public class SVG2PNGUtils {


    /**
     * 将svg字符串转换为png
     *
     * @param svgCode
     *            svg代码
     * @param pngFilePath
     *            保存的路径
     * @throws TranscoderException
     *             svg代码异常
     * @throws IOException
     *             io错误
     */
    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();
                }
            }
        }
    }

    /**
     * 将svgCode转换成png文件，直接输出到流中
     *
     * @param svgCode
     *            svg代码
     * @param outputStream
     *            输出流
     * @throws TranscoderException
     *             异常
     * @throws IOException
     *             io异常
     */
    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);
            // 增加图片的属性设置(单位是像素)---下面是写死了，实际应该是根据SVG的大小动态设置，默认宽高都是400
            t.addTranscodingHint(ImageTranscoder.KEY_WIDTH, new Float(400));
            t.addTranscodingHint(ImageTranscoder.KEY_HEIGHT, new Float(300));
            t.transcode(input, output);
            outputStream.flush();
        } finally {
            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }


    public static void main(String[] args) throws IOException, TranscoderException {
        String svg = "<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\">\n" +
                "    <path d=\"M150 0 L75 200 L225 200 Z\" />\n" +
                "</svg>";
        convertToPng(svg,"src/main/resources/image/two.png");
    }
}