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java将svg图片转换为png格式图片

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发表于 2015-7-28 12:30:01 | 查看: 2466| 回复: 3

有时候在客户端使用svg画图，而在服务器端需要同样的图片，在服务器端重新画一遍是非常费事的。这时候我们就可以利用已有的svg直接通过下面的类转换成png格式。

使用这个方法需要引用batic相关的包，maven pom文件如下：

<dependency><groupId>batik</groupId><artifactId>batik-svggen</artifactId><version>1.6</version></dependency>
<dependency><groupId>batik</groupId><artifactId>batik-awt-util</artifactId><version>1.6</version></dependency>
<dependency><groupId>batik</groupId><artifactId>batik-bridge</artifactId><version>1.6</version></dependency>
<dependency><groupId>batik</groupId><artifactId>batik-css</artifactId><version>1.6</version></dependency>
<dependency><groupId>batik</groupId><artifactId>batik-dom</artifactId><version>1.6</version></dependency>
<dependency><groupId>batik</groupId><artifactId>batik-gvt</artifactId><version>1.6</version></dependency>
<dependency><groupId>batik</groupId><artifactId>batik-parser</artifactId><version>1.6</version></dependency>
<dependency><groupId>batik</groupId><artifactId>batik-script</artifactId><version>1.6</version></dependency>
<dependency><groupId>batik</groupId><artifactId>batik-svg-dom</artifactId><version>1.6</version></dependency>
<dependency><groupId>batik</groupId><artifactId>batik-transcoder</artifactId><version>1.6</version></dependency>
<dependency><groupId>batik</groupId><artifactId>batik-util</artifactId><version>1.6</version></dependency>
<dependency><groupId>batik</groupId><artifactId>batik-xml</artifactId><version>1.6</version></dependency>
<dependency><groupId>xerces</groupId><artifactId>xercesImpl</artifactId><version>2.5.0</version></dependency>
<dependency><groupId>xml-apis</groupId><artifactId>xmlParserAPIs</artifactId><version>2.0.2</version></dependency>
<dependency><groupId>org.axsl.org.w3c.dom.svg</groupId><artifactId>svg-dom-java</artifactId><version>1.1</version></dependency>
<dependency><groupId>xml-apis</groupId> <artifactId>xml-apis</artifactId><version>2.0.0</version></dependency>
<dependency><groupId>org.w3c.css</groupId> <artifactId>sac</artifactId> <version>1.3</version></dependency>

复制代码

package cn.outofmemory.util;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.batik.transcoder.TranscoderException;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.batik.transcoder.image.PNGTranscoder;
/**
* 将svg转换为png格式的图片
*
*
*/
public abstract class SvgPngConverter {
/**
* 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);
t.transcode(input, output);
outputStream.flush();
} finally {
if (outputStream != null) {
try {
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}

复制代码

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java将svg图片转换为png格式图片

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