Java IOUtil類代碼示例

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
private Manifest getManifest(FileObject root) {
    FileObject manifestFo = root.getFileObject("META-INF/MANIFEST.MF");
    if (manifestFo != null) {
        InputStream is = null;
        try {
            is = manifestFo.getInputStream();
            return new Manifest(is);
        } catch (IOException ex) {
            //Exceptions.printStackTrace(ex);
        } finally {
            IOUtil.close(is);
        }
    }
    return null;

}
 

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
private static List<Pattern> loadPublicPackagesPatterns(Project project) {
    List<Pattern> toRet = new ArrayList<Pattern>();
    String[] params = PluginPropertyUtils.getPluginPropertyList(project, 
            MavenNbModuleImpl.GROUPID_MOJO, MavenNbModuleImpl.NBM_PLUGIN, //NOI18N
            "publicPackages", "publicPackage", "manifest"); //NOI18N
    if (params != null) {
        toRet = prepareMavenPublicPackagesPatterns(params);
    } else {
        FileObject obj = project.getProjectDirectory().getFileObject(MANIFEST_PATH);
        if (obj != null) {
            InputStream in = null;
            try {
                in = obj.getInputStream();
                Manifest man = new Manifest();
                man.read(in);
                String value = man.getMainAttributes().getValue(ATTR_PUBLIC_PACKAGE);
                toRet = prepareManifestPublicPackagesPatterns(value);
            } catch (Exception ex) {
                Exceptions.printStackTrace(ex);
            } finally {
                IOUtil.close(in);
            }
        }
    }
    return toRet;
}
 

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
private FileObject copyToCacheDir(InputStream in) throws IOException {
    FileObject cacheDir = cacheDir();
    FileObject file = cacheDir.getFileObject("checkstyle-checker.xml");
    if (file == null) {
        file = cacheDir.createData("checkstyle-checker", "xml");
    }
    InputStream inst = in;
    OutputStream outst = null;
    try {
        outst = file.getOutputStream();
        FileUtil.copy(in, outst);
    } finally {
        IOUtil.close(inst);
        IOUtil.close(outst);
    }
    return file;
}
 

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
void extractJar(File jar, ManifestTransformer manifestTransformer) throws MojoExecutionException {
    try (JarFile jarFile = new JarFile(jar)) {
        for (Enumeration<JarEntry> jarEntries = jarFile.entries(); jarEntries.hasMoreElements(); ) {
            JarEntry jarEntry = jarEntries.nextElement();
            if (manifestTransformer.canTransform(jarEntry)) {
                jarEntry = manifestTransformer.transform(jarEntry);
            }
            if (!jarEntry.isDirectory() && !content.contains(jarEntry.getName())) {
                content.add(jarEntry.getName());
                makeDirsRecursively(jarEntry.getName());
                try (InputStream in = getInputStream(jarEntry, jarFile, manifestTransformer)) {
                    jarOutputStream.putNextEntry(jarEntry);
                    IOUtil.copy(in, jarOutputStream);
                }
            }
        }
    } catch (IOException e) {
        throw new MojoExecutionException("Error adding " + jar.getName() + " to target JAR: " + e.getMessage(), e);
    }
}
 

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
private void addJavaSource( Set<String> resources, JarOutputStream jos, String name, InputStream is,
                            List<Relocator> relocators, boolean consistentDates )
    throws IOException
{
    JarEntry jarEntry = new ConsistentJarEntry( name, consistentDates );
    jos.putNextEntry( jarEntry );

    String sourceContent = IOUtil.toString( new InputStreamReader( is, "UTF-8" ) );

    for ( Relocator relocator : relocators )
    {
        sourceContent = relocator.applyToSourceContent( sourceContent );
    }

    final Writer writer = new OutputStreamWriter( jos, "UTF-8" );
    IOUtil.copy( sourceContent, writer );
    writer.flush();

    resources.add( name );
}
 

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
public void testConfigurationMerging()
    throws Exception
{

    XMLUnit.setNormalizeWhitespace( true );

    InputStream resourceAsStream = getClass().getResourceAsStream( "/components-1.xml" );
    transformer.processResource( "components-1.xml", resourceAsStream,
                                 Collections.<Relocator> emptyList() );
    resourceAsStream.close();
    InputStream resourceAsStream1 = getClass().getResourceAsStream( "/components-2.xml" );
    transformer.processResource( "components-1.xml", resourceAsStream1,
                                 Collections.<Relocator> emptyList() );
    resourceAsStream1.close();
    final InputStream resourceAsStream2 = getClass().getResourceAsStream( "/components-expected.xml" );
    Diff diff = XMLUnit.compareXML(
        IOUtil.toString( resourceAsStream2, "UTF-8" ),
        IOUtil.toString( transformer.getTransformedResource(), "UTF-8" ) );
    //assertEquals( IOUtil.toString( getClass().getResourceAsStream( "/components-expected.xml" ), "UTF-8" ),
    //              IOUtil.toString( transformer.getTransformedResource(), "UTF-8" ).replaceAll("\r\n", "\n") );
    resourceAsStream2.close();
    XMLAssert.assertXMLIdentical( diff, true );
}
 

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
/**
 * Reads the {@link WebappStructure} from the specified file.
 *
 * @param file the file containing the webapp structure
 * @return the webapp structure
 * @throws IOException if an error occurred while reading the structure
 */
public WebappStructure fromXml( File file )
    throws IOException
{
    Reader reader = null;

    try
    {
        reader = ReaderFactory.newXmlReader( file );
        return (WebappStructure) XSTREAM.fromXML( reader );
    }
    finally
    {
        IOUtil.close( reader );
    }
}
 

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
/**
 * Saves the {@link WebappStructure} to the specified file.
 *
 * @param webappStructure the structure to save
 * @param targetFile the file to use to save the structure
 * @throws IOException if an error occurred while saving the webapp structure
 */
public void toXml( WebappStructure webappStructure, File targetFile )
    throws IOException
{
    // CHECKSTYLE_OFF: LineLength
    Writer writer = null;
    try
    {
        if ( !targetFile.getParentFile().exists() && !targetFile.getParentFile().mkdirs() )
        {
            throw new IOException( "Could not create parent [" + targetFile.getParentFile().getAbsolutePath() + "]" );
        }

        if ( !targetFile.exists() && !targetFile.createNewFile() )
        {
            throw new IOException( "Could not create file [" + targetFile.getAbsolutePath() + "]" );
        }
        writer = WriterFactory.newXmlWriter( targetFile );
        XSTREAM.toXML( webappStructure, writer );
    }
    finally
    {
        IOUtil.close( writer );
    }
    // CHECKSTYLE_ON: LineLength
}
 

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
private String interpolateBaseDirAndRepo( String content )
{
    StringReader sr = new StringReader( content );
    StringWriter result = new StringWriter();

    Map context = new HashMap();

    context.put( "BASEDIR", StringUtils.quoteAndEscape( getBasedir(), '"' ) );
    context.put( "REPO", StringUtils.quoteAndEscape( getRepo(), '"' ) );
    InterpolationFilterReader interpolationFilterReader = new InterpolationFilterReader( sr, context, "@", "@" );
    try
    {
        IOUtil.copy( interpolationFilterReader, result );
    }
    catch ( IOException e )
    {
        // shouldn't happen...
    }
    return result.toString();
}
 

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
private static void writeFile( File outputFile, Reader reader )
    throws DaemonGeneratorException
{
    FileWriter out = null;

    try
    {
        outputFile.getParentFile().mkdirs();
        out = new FileWriter( outputFile );

        IOUtil.copy( reader, out );
    }
    catch ( IOException e )
    {
        throw new DaemonGeneratorException( "Error writing output file: " + outputFile.getAbsolutePath(), e );
    }
    finally
    {
        IOUtil.close( reader );
        IOUtil.close( out );
    }
}
 

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
private static String getAppAssemblerBooterVersion()
    throws IOException, XmlPullParserException
{
    if ( appassemblerVersion == null )
    {
        MavenXpp3Reader reader = new MavenXpp3Reader();
        FileReader fileReader = new FileReader( getTestFile( "pom.xml" ) );
        try
        {
            appassemblerVersion = reader.read( fileReader ).getParent().getVersion();
        }
        finally
        {
            IOUtil.close( fileReader );
        }
    }
    return appassemblerVersion;
}
 

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
private void saveAndCompare( String expectedResource )
    throws IOException
{
    StringOutputStream string = new StringOutputStream();
    formattedProperties.save( string );

    StringOutputStream expected = new StringOutputStream();
    InputStream asStream = getClass().getResourceAsStream( expectedResource );
    try
    {
        IOUtil.copy( asStream, expected );
    }
    finally
    {
        IOUtil.close( asStream );
    }

    String unified = StringUtils.unifyLineSeparators( expected.toString() );
    assertEquals( unified, string.toString() );
}
 

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
@SuppressWarnings("unchecked")
@Override
public void execute() throws MojoExecutionException {
    final Log log = getLog();

    File usedTargetFile = new File(targetFile.getAbsolutePath());
    log.info("creating source list file '" + usedTargetFile.getAbsolutePath() + "'");

    try {
        if (!usedTargetFile.getParentFile().exists() && !usedTargetFile.getParentFile().mkdirs())
            throw new MojoExecutionException("cannot create targetdir: " + usedTargetFile.getParentFile().getAbsolutePath());
        BufferedWriter writer = new BufferedWriter(new FileWriter(usedTargetFile));

        scanDirectories(project.getCompileSourceRoots(), writer);
        scanDirectories(project.getTestCompileSourceRoots(), writer);
        IOUtil.close(writer);
    } catch (IOException e) {
        throw new MojoExecutionException("IO-Error while generating source list file '" + usedTargetFile + "'", e);
    }
}
 

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
private void createArgFile( String filePath, List<String> lines )
    throws IOException
{
    final String EOL = System.getProperty( "line.separator", "\\n" );
    
    FileWriter writer = null;
    try
    {
        writer = new FileWriter( filePath );
        for ( String line : lines )
        {
            writer.append( line ).append( EOL );
        }

    }
    finally
    {
        IOUtil.close( writer );
    }
}
 

import org.codehaus.plexus.util.IOUtil; //導入依賴的package包/類
protected String getEncoding( String requiredEncoding, File file, Log log )
    throws IOException
{
    FileInputStream fis = null;
    try
    {
        fis = new FileInputStream( file );
        CharsetDetector detector = new CharsetDetector();
        detector.setDeclaredEncoding( requiredEncoding );
        detector.setText( new BufferedInputStream( fis ) );
        CharsetMatch[] charsets = detector.detectAll();
        if ( charsets == null )
        {
            return null;
        }
        else
        {
            return charsets[0].getName();
        }
    }
    finally
    {
        IOUtil.close( fis );
    }
}