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在Java中,可以使用Deflater
类来实现XML字符串的压缩。以下是一个简单的示例:
import java.util.zip.Deflater; import java.util.zip.DeflaterOutputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.nio.charset.StandardCharsets; public class XmlCompression { public static void main(String[] args) throws IOException { String xmlString = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><root><element>Content</element></root>"; byte[] compressedBytes = compressXml(xmlString); System.out.println("Compressed XML: " + new String(compressedBytes, StandardCharsets.UTF_8)); } public static byte[] compressXml(String xmlString) throws IOException { ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); Deflater deflater = new Deflater(Deflater.BEST_COMPRESSION); DeflaterOutputStream deflaterOutputStream = new DeflaterOutputStream(byteArrayOutputStream, deflater); deflaterOutputStream.write(xmlString.getBytes(StandardCharsets.UTF_8)); deflaterOutputStream.close(); return byteArrayOutputStream.toByteArray(); } }
在这个示例中,我们首先创建了一个包含XML字符串的ByteArrayOutputStream
对象。然后,我们创建了一个Deflater
对象,并设置了压缩级别为Deflater.BEST_COMPRESSION
。接下来,我们创建了一个DeflaterOutputStream
对象,将ByteArrayOutputStream
和Deflater
对象作为参数传递。最后,我们将XML字符串写入DeflaterOutputStream
,并关闭流。这将返回一个压缩后的字节数组。