Apache batik 轉換svg文件爲jpeg/png/pdf

所需主要架包：

<!-- https://mvnrepository.com/artifact/org.apache.xmlgraphics/batik-transcoder -->
				<dependency>
				    <groupId>org.apache.xmlgraphics</groupId>
				    <artifactId>batik-transcoder</artifactId>
				    <version>1.7</version>
				</dependency>
				<!-- https://mvnrepository.com/artifact/org.apache.xmlgraphics/batik-codec   轉PNG需要   -->
				<dependency>
				    <groupId>org.apache.xmlgraphics</groupId>
				    <artifactId>batik-codec</artifactId>
				    <version>1.7</version>
				</dependency>
				
				<!-- https://mvnrepository.com/artifact/org.apache.xmlgraphics/fop   轉pdf需要,注意版本  -->
				<dependency>
				    <groupId>org.apache.xmlgraphics</groupId>
				    <artifactId>fop</artifactId>
				    <version>1.0</version>
    			</dependency>

此處用的batik 1.7版本，更高版本出現一些問題，坑了：

1、如所需某些類沒有了，估計是高版本沒有整合完；

2、某些高版本出現轉換pdf時，出現死循環的情況，有點無語。

直接上完整代碼：

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

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;

import java.io.*;

public class SvgUtil {
		
	 //svg文件轉成PDF
	   public static void convert2Pdf(File svg, File pdf) {
		   OutputStream outs =null;
		   InputStream ins = null;
		   try {
			   outs =new BufferedOutputStream(new FileOutputStream(pdf));
			   ins= new FileInputStream(svg);
					Transcoder transcoder = new PDFTranscoder();
					TranscoderInput input = new TranscoderInput(ins);
					TranscoderOutput output = new TranscoderOutput(outs);
					transcoder.transcode(input, output);
			} catch (Exception e) {
				e.printStackTrace();
			}finally {
				try {
					ins.close();
					outs.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
	   
	   
	        //svg轉爲png
	 		public static void convert2Jpeg(File svg, File jpeg){
	 			InputStream ins = null ;
	 			OutputStream outs = null;
	 			try {
	 				 ins= new FileInputStream(svg);
	 				 outs = new BufferedOutputStream(new FileOutputStream(jpeg));
	 				Transcoder transcoder = new JPEGTranscoder();
	 				//爲防止ERROR: The JPEG quality has not been specified. Use the default one: no compression 錯誤，需如下配置
	 				transcoder.addTranscodingHint(JPEGTranscoder.KEY_QUALITY, 0.99f);
	 				TranscoderInput input = new TranscoderInput(ins);
	 				TranscoderOutput output = new TranscoderOutput(outs);
	 				transcoder.transcode(input, output);
	 				
	 			} catch (Exception e) {
	 				// TODO: handle exception
	 				e.printStackTrace();
	 			}finally{
	 				try {
	 					ins.close();
	 					outs.close();
	 				} catch (Exception ee) {
	 					// TODO: handle exception
	 					ee.printStackTrace();
	 				}
	 			}
	 		}
		
		//svg轉爲png
		public static void convert2Png(File svg, File png){
			InputStream ins = null ;
			OutputStream outs = null;
			try {
				 ins= new FileInputStream(svg);
				 outs = new BufferedOutputStream(new FileOutputStream(png));
				Transcoder transcoder = new PNGTranscoder();
				//爲防止圖片轉換時出現圖片大小和SVG設置的大小不一致,需要在轉換時設置圖片大小  2450和150是SVG中width和height
//				transcoder.addTranscodingHint(PNGTranscoder.KEY_WIDTH, new Float(2450.0));
//				transcoder.addTranscodingHint(PNGTranscoder.KEY_HEIGHT, new Float(150.0)); 
				TranscoderInput input = new TranscoderInput(ins);
				TranscoderOutput output = new TranscoderOutput(outs);
				transcoder.transcode(input, output);
				
			} catch (Exception e) {
				// TODO: handle exception
				e.printStackTrace();
			}finally{
				try {
					ins.close();
					outs.close();
				} catch (Exception ee) {
					// TODO: handle exception
					ee.printStackTrace();
				}
			}
		}
		
		//字符串轉成pdf
		public static void convertStr2Pdf(String svg, File pdf){
			   OutputStream outs =null;
			   InputStream ins = null;
			   try {
				   outs =new BufferedOutputStream(new FileOutputStream(pdf));
				   ins= new ByteArrayInputStream(svg.getBytes());
						Transcoder transcoder = new PDFTranscoder();
						TranscoderInput input = new TranscoderInput(ins);
						TranscoderOutput output = new TranscoderOutput(outs);
						transcoder.transcode(input, output);
				} catch (Exception e) {
					e.printStackTrace();
				}finally {
					try {
						ins.close();
						outs.close();
					} catch (IOException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}
		}
		
		public static void main(String[] args) throws Exception {
		
	        File file=new File("g://score_0.svg");
	        File pdf=new File("g://score_0.pdf");
	        File png =new File("g://score_0.png");
	        File jpeg =new File("g://score.jpg");
	        
			SvgUtil.convert2Pdf(file, pdf);
	    //  SvgUtil.convert2Png(file, png);
	    //    SvgUtil.convert2Jpeg(file,jpeg);
		}

		
}