Java API for KML (JAK) を使用して画像ファイルを kmz ファイルに追加する方法はありますか? 問題なくkmlファイルを作成できますが、リソース（いくつかの画像ファイルを含む画像フォルダーなど）を埋め込もうとしているだけですが、marshalAsKmzメソッドは追加ファイルとしてKmlオブジェクトしか取得しないため、わかりません余分な画像を含める方法を説明します。
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プロジェクトでJAKを1年以上使用しています。これを使用して KML を作成し、それを単純な KML (KMZ ではない) としてマーシャリングします。Java SE の「Zip」クラスを使用して KMZ を手動で作成する別のユーティリティ クラスを作成しました。それはうまく動作します。KMZ は、1 つの .kml ファイルと 0 個以上のリソース ファイル (画像など) を含む .zip アーカイブにすぎません。唯一の違いは、ファイルを出力するときに .zip ではなく .kmz という名前を付けることです。KML ドキュメント<Style>定義では、KML ドキュメント自体への相対パスを使用してリソース ファイルを参照します。KML ファイルは、KMZ アーカイブの「ルート」にあると見なされます。リソース ファイルが KMZ (.zip) のルートにもある場合は、パスは必要なく、ファイル名だけが必要です。
編集: JAK オブジェクトを圧縮する前にファイルにマーシャリングする中間ステップを削除したことを実際に忘れていました。Kml以下のユーティリティ メソッドは、Kmlオブジェクトを直接ZipOutputStream.
ここで説明したことを実行するために作成したユーティリティ クラスを次に示します。他の誰かがJAKのみを使用する代替ソリューションを投稿して、将来このコードを廃止できることを期待して、ここに投稿しています。今のところ、これで作業は完了です。
注: slf4j、Apache Commons Lang、または Commons I/O を使用しない場合は、コードにいくつかの調整を加えて、それらのビットを削除/独自のコードに置き換えます。明らかに、このコードには JAK ライブラリが必要です。
package com.jimtough;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Collections;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.Validate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import de.micromata.opengis.kml.v_2_2_0.Kml;
/**
* Uses the classes in java.util.zip to package a KML file and its
* supplementary files as a ZIP-compressed KMZ file.
*
* @author JTOUGH
*/
public final class KMZPackager {
private final static Logger logger =
LoggerFactory.getLogger(KMZPackager.class);
/**
* Container for data that represents a single entry that will be added
* to a compressed archive.
* @author JTOUGH
*/
public static abstract class DataSource {
protected String archivedFileName;
/**
* Write the contents of this data source to the supplied
* zip output stream.
*
* @param zipOutputStream
* @throws IOException
*/
public abstract void writeToStream(ZipOutputStream zipOutputStream)
throws IOException;
}
/**
* Container for data that represents a single file that will be added
* to a compressed archive.
* @author JTOUGH
*/
public static final class FileDataSource extends DataSource {
private File sourceFile;
/**
* Constructor
*
* @param sourceFile Actual file that will be added to the
* compressed archive.
* @param archivedFileName Name that will be assigned to the compressed
* file within the archive. Caller must ensure that this value is
* unique within the archive otherwise an exception will be thrown
* when a name clash occurs during creation of the archive.
* This string must be non-null and non-empty. Any forward-slash
* characters in the string will be treated as directory separators
* when the KMZ/ZIP archive is created.
* @throws IllegalArgumentException If either of these parameters
* is a null reference
*/
public FileDataSource(
File sourceFile,
String archivedFileName)
throws IllegalArgumentException {
Validate.notNull(sourceFile);
Validate.notEmpty(archivedFileName);
this.sourceFile = sourceFile;
this.archivedFileName = archivedFileName;
}
@Override
public void writeToStream(ZipOutputStream zipOutputStream)
throws IOException {
Validate.notNull(zipOutputStream);
// Check that the file exists, and throw an appropriate exception
// before reading it
if (!sourceFile.exists()) {
throw new IllegalArgumentException(
"File referenced in parameter [" +
sourceFile.getAbsolutePath() + "] does not exist");
}
FileInputStream fis = new FileInputStream(sourceFile);
if (logger.isDebugEnabled()) {
logger.debug("Adding file to KMZ archive" +
" | archive name: " + archivedFileName +
" | original name: " +
sourceFile.getCanonicalPath());
}
// Mark the start of this new file in the ZIP stream
ZipEntry entry = new ZipEntry(archivedFileName);
zipOutputStream.putNextEntry(entry);
// Use the Apache commons-io library to do a buffered
// stream-to-stream copy
try {
IOUtils.copy(fis, zipOutputStream);
} finally {
fis.close();
}
}
}
/**
* Container for a single JAK Kml object that will be marshalled
* directly to a compressed KMZ archive as it is created
* @author JTOUGH
*/
public static final class KMLDataSource extends DataSource {
private Kml kml;
/**
* Constructor
*
* @param kml JAK Kml object that will be marshalled directly to the
* compressed archive.
* @param archivedFileName Name that will be assigned to the compressed
* file within the archive. Caller must ensure that this value is
* unique within the archive otherwise an exception will be thrown
* when a name clash occurs during creation of the archive.
* This string must be non-null and non-empty. Any forward-slash
* characters in the string will be treated as directory separators
* when the KMZ/ZIP archive is created.
* @throws IllegalArgumentException If either of these parameters
* is a null reference
*/
public KMLDataSource(
Kml kml,
String archivedFileName)
throws IllegalArgumentException {
Validate.notNull(kml);
Validate.notEmpty(archivedFileName);
this.kml = kml;
this.archivedFileName = archivedFileName;
}
@Override
public void writeToStream(ZipOutputStream zipOutputStream) throws IOException {
Validate.notNull(zipOutputStream);
// Mark the start of this new file in the ZIP stream
ZipEntry entry = new ZipEntry(archivedFileName);
zipOutputStream.putNextEntry(entry);
// Marshal the Kml object directly to the ZipOutputStream
if (logger.isDebugEnabled()) {
logger.debug("Marshalling KML to KMZ archive" +
" | archive name: " + archivedFileName);
}
kml.marshal(zipOutputStream);
}
}
/**
* Container for a stream holding a Kml document. This will be written
* directly to a compressed KMZ archive as it is created.
*/
public static final class StreamDataSource extends DataSource {
private InputStream inputStream;
/**
* Constructor
*
* @param inputStream the inputStream holding the KML text
* @param archivedFileName Name that will be assigned to the compressed
* file within the archive. Caller must ensure that this value is
* unique within the archive otherwise an exception will be thrown
* when a name clash occurs during creation of the archive.
* This string must be non-null and non-empty. Any forward-slash
* characters in the string will be treated as directory separators
* when the KMZ/ZIP archive is created.
* @throws IllegalArgumentException If either of these parameters
* is a null reference
*/
public StreamDataSource(
InputStream inputStream,
String archivedFileName)
throws IllegalArgumentException {
Validate.notNull(inputStream);
Validate.notEmpty(archivedFileName);
this.inputStream = inputStream;
this.archivedFileName = archivedFileName;
}
@Override
public void writeToStream(ZipOutputStream zipOutputStream) throws IOException {
Validate.notNull(zipOutputStream);
// Mark the start of this new file in the ZIP stream
ZipEntry entry = new ZipEntry(archivedFileName);
zipOutputStream.putNextEntry(entry);
// Use the Apache commons-io library to do a buffered
// stream-to-stream copy
if (logger.isDebugEnabled()) {
logger.debug("Copying KML from stream to KMZ archive" +
" | archive name: " + archivedFileName);
}
try {
IOUtils.copy(inputStream, zipOutputStream);
} finally {
inputStream.close();
}
}
}
/**
* Use ZIP compression to package a KML file and its supplementary files
* as a KMZ archive. The compressed archive will be written to the
* supplied output stream.
*
* @param os OutputStream to which the compressed archive will be written.
* This parameter must be a non-null reference to an OutputStream that
* is open for write operations.
* @param kmlDataSource KML to be added to the compressed archive.
* This parameter must not be null. The archivedFileName attribute must
* end with the .kml extension. The file is added to the compressed
* archive. The KMZ specification states that a KMZ archive must only
* contain a single KML file.
* @param supplementaryFileList List of file locations for supplementary
* files that will be included in the KMZ archive. A common example
* would be icons or image overlays that are referenced in the KML file.
* This parameter can be null or an empty list if there are no
* supplementary files to include in the KMZ. Each source that is included
* in the list must refer to an existing file that does NOT have the
* file extension '.kml'.
* @throws RuntimeException Thrown if anything unexpected occurs
* that prevents execution from continuing or if any of the stated
* conditions for the input parameters are violated
*/
public void packageAsKMZ(
OutputStream os,
DataSource kmlDataSource,
List<FileDataSource> supplementaryFileList)
throws RuntimeException {
ZipOutputStream zipOutputStream = null;
boolean isExceptionThrown = false;
Exception caughtException = null;
List<FileDataSource> supplFileList = supplementaryFileList;
try {
Validate.notNull(os, "os parameter cannot be null");
Validate.notNull(kmlDataSource,
"kmlFileDataSource parameter cannot be null");
// Treat a null parameter just like an empty list (which is OK)
if (supplFileList == null) {
supplFileList = Collections.emptyList();
}
if (logger.isDebugEnabled()) {
logger.debug(
"Creating KMZ archive" +
" | supplementary files: " + supplFileList.size());
}
// Create a buffered output stream for the new KMZ file
zipOutputStream = new ZipOutputStream(new BufferedOutputStream(os));
Validate.isTrue(
kmlDataSource.archivedFileName.endsWith(".kml"),
"KML archived file name must end with .kml");
kmlDataSource.writeToStream(zipOutputStream);
// Now process the list of supplementary files
if (logger.isDebugEnabled()) {
logger.debug("Adding supplementary files to KMZ archive" +
" | archive name: ");
}
for (FileDataSource ds : supplFileList) {
Validate.isTrue(
!ds.archivedFileName.endsWith(".kml"),
"Not legal to include .kml files in supplementary list");
ds.writeToStream(zipOutputStream);
}
// Close the output stream to complete the ZIP creation
zipOutputStream.flush();
zipOutputStream.close();
logger.info("KMZ archive created successfully");
} catch (IOException e) {
isExceptionThrown = true;
caughtException = e;
logger.error("IOException while creating ZIP stream");
} catch (IllegalArgumentException e) {
isExceptionThrown = true;
caughtException = e;
} catch (RuntimeException e) {
isExceptionThrown = true;
caughtException = e;
} finally {
if (isExceptionThrown) {
try {
if (zipOutputStream != null) {
zipOutputStream.close();
}
} catch (IOException ioe) {
// Don't care
}
throw new RuntimeException(caughtException);
}
}
}
}
于 2011-09-01T23:30:53.477 に答える