cad转换成png,svg

1.设置仓库可以在setting.xml中设置（也可以在pom中设置，设置项即可）

<mirror>
      <id>AsposeJavaAPI</id>
      <name>Aspose Java API</name>
      <url>https://repository.aspose.com/repo/</url>
    </mirror>

2.pom

<!-- Aspose CAD标准dwg文件转svg或png -->
        <dependency>
            <groupId>com.aspose</groupId>
            <artifactId>aspose-cad</artifactId>
            <version>20.1</version>
        </dependency>
        <dependency>
            <groupId>com.aspose</groupId>
            <artifactId>aspose-pdf</artifactId>
            <version>20.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.xmlgraphics</groupId>
            <artifactId>batik-all</artifactId>
            <version>1.12</version>
            <type>pom</type>
        </dependency>
        <dependency>
            <groupId>dom4j</groupId>
            <artifactId>dom4j</artifactId>
            <version>1.6.1</version>
        </dependency>

<repositories>
        <!-- Aspose maven仓库 -->
        <repository>
            <id>AsposeJavaAPI</id>
            <name>Aspose Java API</name>
            <url>https://repository.aspose.com/repo/</url>
        </repository>
    </repositories>

3.装换工具类

CADUtils.java

package com.meeno.chemical.common.cad.utils;

import com.aspose.cad.Image;
import com.aspose.cad.fileformats.cad.CadDrawTypeMode;
import com.aspose.cad.imageoptions.CadRasterizationOptions;
import com.aspose.cad.imageoptions.PngOptions;
import com.aspose.cad.imageoptions.SvgOptions;
import com.aspose.cad.imageoptions.UnitType;

/**
 * @description: cad转换工具类
 * @author: Wzq
 * @create: 2020-06-18 15:18
 */
public class CADUtils {

    /**
     * dwg转换成png
     * @param sourcePath
     * @param targetPath
     */
    public static void dwgToPng(String sourcePath,String targetPath){
        //String sourcePath = "D:\\IDEA\\cad\\17.dwg";
        //String targetPath = "D:\\IDEA\\cad\\17.png";

        PngOptions pngOptions = new PngOptions();
        // 设置png的压缩等级 0 最低 9 最高
        pngOptions.setCompressionLevel(0);
        Image image = Image.load(sourcePath);
        // 原图尺寸类型
        int unitType = image.getUnitType();
        int width = image.getWidth();
        int height = image.getHeight();
        // 100万像素等比倍数，比较粗，就这样吧
        int zoom = 1008000 / width / height;
        CadRasterizationOptions cadRasterizationOptions = new CadRasterizationOptions();
        cadRasterizationOptions.setPageHeight(width * zoom);
        cadRasterizationOptions.setPageWidth(height * zoom);
        cadRasterizationOptions.setDrawType(CadDrawTypeMode.UseObjectColor);
        // 这个无尺寸类型就当是像素吧
        cadRasterizationOptions.setUnitType(UnitType.Unitless);

        pngOptions.setVectorRasterizationOptions(cadRasterizationOptions);
        image.save(targetPath, pngOptions);
    }

    /**
     * dwg转换成Svg
     * @param sourcePath
     * @param targetPath
     */
    public static void dwgToSvg(String sourcePath,String targetPath){
        SvgOptions options = new SvgOptions();
        Image image = Image.load(sourcePath);
        int width = image.getWidth();
        int height = image.getHeight();
        //100万像素等比倍数
        int zoom = 1008000 / width / height;

        CadRasterizationOptions cadRasterizationOptions = new CadRasterizationOptions();
        cadRasterizationOptions.setPageHeight(height * zoom);
        cadRasterizationOptions.setPageWidth(width * zoom);
        cadRasterizationOptions.setDrawType(CadDrawTypeMode.UseObjectColor);

        options.setVectorRasterizationOptions(cadRasterizationOptions);
        //options.setColorType(SvgColorMode.Grayscale);
        //options.setTextAsShapes(true);
        image.save(targetPath,options);
    }

    public static void main(String[] args) {
        String sourcePath = "E:\\区域位置图.dwg";
//        String targetPath = "E:\\区域位置图.png";
//        CADUtils.dwgToPng(sourcePath,targetPath);
        String svg = "E:\\区域位置图.svg";
        CADUtils.dwgToSvg(sourcePath,svg);
    }

}