使用 batik 库，将 SVG 转化为 PNG

依赖

    implementation("org.apache.xmlgraphics:fop:2.6")
    // https://mvnrepository.com/artifact/org.apache.xmlgraphics/batik-codec
    implementation("org.apache.xmlgraphics:batik-codec:1.14")

代码

    @JvmStatic
    fun main(args: Array<String>) {
        val svg = this::class.java.getResource("/vscode.svg")!!
            .toURI()
            .toString()
            .toInput()
        val output = TranscoderOutput(ByteArrayOutputStream())
        svg.transcode(output)
        FileOutputStream("1.png").write((output.outputStream as ByteArrayOutputStream).toByteArray())
    }

    private fun TranscoderInput.transcode(output: TranscoderOutput) {
        PNGTranscoder().transcode(this, output)
    }

    private fun String.toInput(): TranscoderInput {
        val doc = SAXSVGDocumentFactory(
            XMLResourceDescriptor
                .getXMLParserClassName()
        ).createDocument(this)
        return TranscoderInput(doc)
    }

运行结果

运行后会在当前目录下生成一个 1.png 的图片