下面列出了java.util.jar.Attributes#containsKey ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
private Manifest jgitverManifestOrEmpty() {
try {
Enumeration<URL> resources = getClass().getClassLoader().getResources("META-INF/MANIFEST.MF");
while (resources.hasMoreElements()) {
URL url = resources.nextElement();
Manifest manifest = new Manifest(url.openStream());
Attributes mfAttrs = manifest.getMainAttributes();
Attributes.Name attributeName = new Attributes.Name(X_MAVEN_COORDINATES);
if (mfAttrs.containsKey(attributeName) && mfAttrs.getValue(attributeName).startsWith("fr.brouillard.oss:jgitver")) {
return manifest;
}
}
} catch (IOException ignore) {
// expected
}
return new Manifest();
}
static String getMainClassFromJar(String jarname) {
String mainValue = null;
try (JarFile jarFile = new JarFile(jarname)) {
Manifest manifest = jarFile.getManifest();
if (manifest == null) {
abort(null, "java.launcher.jar.error2", jarname);
}
Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
mainValue = mainAttrs.getValue(MAIN_CLASS);
if (mainValue == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
/*
* Hand off to FXHelper if it detects a JavaFX application
* This must be done after ensuring a Main-Class entry
* exists to enforce compliance with the jar specification
*/
if (mainAttrs.containsKey(
new Attributes.Name(FXHelper.JAVAFX_APPLICATION_MARKER))) {
return FXHelper.class.getName();
}
return mainValue.trim();
} catch (IOException ioe) {
abort(ioe, "java.launcher.jar.error1", jarname);
}
return null;
}
static String getMainClassFromJar(String jarname) {
String mainValue = null;
try (JarFile jarFile = new JarFile(jarname)) {
Manifest manifest = jarFile.getManifest();
if (manifest == null) {
abort(null, "java.launcher.jar.error2", jarname);
}
Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
mainValue = mainAttrs.getValue(MAIN_CLASS);
if (mainValue == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
/*
* Hand off to FXHelper if it detects a JavaFX application
* This must be done after ensuring a Main-Class entry
* exists to enforce compliance with the jar specification
*/
if (mainAttrs.containsKey(
new Attributes.Name(FXHelper.JAVAFX_APPLICATION_MARKER))) {
return FXHelper.class.getName();
}
return mainValue.trim();
} catch (IOException ioe) {
abort(ioe, "java.launcher.jar.error1", jarname);
}
return null;
}
static String getMainClassFromJar(String jarname) {
String mainValue = null;
try (JarFile jarFile = new JarFile(jarname)) {
Manifest manifest = jarFile.getManifest();
if (manifest == null) {
abort(null, "java.launcher.jar.error2", jarname);
}
Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
mainValue = mainAttrs.getValue(MAIN_CLASS);
if (mainValue == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
/*
* Hand off to FXHelper if it detects a JavaFX application
* This must be done after ensuring a Main-Class entry
* exists to enforce compliance with the jar specification
*/
if (mainAttrs.containsKey(
new Attributes.Name(FXHelper.JAVAFX_APPLICATION_MARKER))) {
return FXHelper.class.getName();
}
return mainValue.trim();
} catch (IOException ioe) {
abort(ioe, "java.launcher.jar.error1", jarname);
}
return null;
}
static String getMainClassFromJar(String jarname) {
String mainValue = null;
try (JarFile jarFile = new JarFile(jarname)) {
Manifest manifest = jarFile.getManifest();
if (manifest == null) {
abort(null, "java.launcher.jar.error2", jarname);
}
Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
mainValue = mainAttrs.getValue(MAIN_CLASS);
if (mainValue == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
/*
* Hand off to FXHelper if it detects a JavaFX application
* This must be done after ensuring a Main-Class entry
* exists to enforce compliance with the jar specification
*/
if (mainAttrs.containsKey(
new Attributes.Name(FXHelper.JAVAFX_APPLICATION_MARKER))) {
return FXHelper.class.getName();
}
return mainValue.trim();
} catch (IOException ioe) {
abort(ioe, "java.launcher.jar.error1", jarname);
}
return null;
}
public static String getAdapterVersion(File jarFile) throws IOException {
String version = null;
JarFile jar = new JarFile(jarFile);
Attributes attributes = jar.getManifest().getMainAttributes();
if (attributes.containsKey(ATTR_MODULE_IMPLEMENTATION)) {
version = attributes.getValue(ATTR_MODULE_IMPLEMENTATION);
}
jar.close();
return version;
}
static String getMainClassFromJar(String jarname) {
String mainValue = null;
try (JarFile jarFile = new JarFile(jarname)) {
Manifest manifest = jarFile.getManifest();
if (manifest == null) {
abort(null, "java.launcher.jar.error2", jarname);
}
Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
mainValue = mainAttrs.getValue(MAIN_CLASS);
if (mainValue == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
/*
* Hand off to FXHelper if it detects a JavaFX application
* This must be done after ensuring a Main-Class entry
* exists to enforce compliance with the jar specification
*/
if (mainAttrs.containsKey(
new Attributes.Name(FXHelper.JAVAFX_APPLICATION_MARKER))) {
return FXHelper.class.getName();
}
return mainValue.trim();
} catch (IOException ioe) {
abort(ioe, "java.launcher.jar.error1", jarname);
}
return null;
}
static String getMainClassFromJar(String jarname) {
String mainValue = null;
try (JarFile jarFile = new JarFile(jarname)) {
Manifest manifest = jarFile.getManifest();
if (manifest == null) {
abort(null, "java.launcher.jar.error2", jarname);
}
Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
mainValue = mainAttrs.getValue(MAIN_CLASS);
if (mainValue == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
/*
* Hand off to FXHelper if it detects a JavaFX application
* This must be done after ensuring a Main-Class entry
* exists to enforce compliance with the jar specification
*/
if (mainAttrs.containsKey(
new Attributes.Name(FXHelper.JAVAFX_APPLICATION_MARKER))) {
return FXHelper.class.getName();
}
return mainValue.trim();
} catch (IOException ioe) {
abort(ioe, "java.launcher.jar.error1", jarname);
}
return null;
}
static String getMainClassFromJar(String jarname) {
String mainValue = null;
try (JarFile jarFile = new JarFile(jarname)) {
Manifest manifest = jarFile.getManifest();
if (manifest == null) {
abort(null, "java.launcher.jar.error2", jarname);
}
Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
mainValue = mainAttrs.getValue(MAIN_CLASS);
if (mainValue == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
/*
* Hand off to FXHelper if it detects a JavaFX application
* This must be done after ensuring a Main-Class entry
* exists to enforce compliance with the jar specification
*/
if (mainAttrs.containsKey(
new Attributes.Name(FXHelper.JAVAFX_APPLICATION_MARKER))) {
return FXHelper.class.getName();
}
return mainValue.trim();
} catch (IOException ioe) {
abort(ioe, "java.launcher.jar.error1", jarname);
}
return null;
}
public static String getAdapterAlias(File jarFile) throws IOException {
String version = null;
JarFile jar = new JarFile(jarFile);
Attributes attributes = jar.getManifest().getMainAttributes();
if (attributes.containsKey(ATTR_MODULE_ALIAS)) {
version = attributes.getValue(ATTR_MODULE_ALIAS);
}
jar.close();
return version;
}
static String getMainClassFromJar(String jarname) {
String mainValue = null;
try (JarFile jarFile = new JarFile(jarname)) {
Manifest manifest = jarFile.getManifest();
if (manifest == null) {
abort(null, "java.launcher.jar.error2", jarname);
}
Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
mainValue = mainAttrs.getValue(MAIN_CLASS);
if (mainValue == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
/*
* Hand off to FXHelper if it detects a JavaFX application
* This must be done after ensuring a Main-Class entry
* exists to enforce compliance with the jar specification
*/
if (mainAttrs.containsKey(
new Attributes.Name(FXHelper.JAVAFX_APPLICATION_MARKER))) {
return FXHelper.class.getName();
}
return mainValue.trim();
} catch (IOException ioe) {
abort(ioe, "java.launcher.jar.error1", jarname);
}
return null;
}
static String getMainClassFromJar(String jarname) {
String mainValue = null;
try (JarFile jarFile = new JarFile(jarname)) {
Manifest manifest = jarFile.getManifest();
if (manifest == null) {
abort(null, "java.launcher.jar.error2", jarname);
}
Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
mainValue = mainAttrs.getValue(MAIN_CLASS);
if (mainValue == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
/*
* Hand off to FXHelper if it detects a JavaFX application
* This must be done after ensuring a Main-Class entry
* exists to enforce compliance with the jar specification
*/
if (mainAttrs.containsKey(
new Attributes.Name(FXHelper.JAVAFX_APPLICATION_MARKER))) {
return FXHelper.class.getName();
}
return mainValue.trim();
} catch (IOException ioe) {
abort(ioe, "java.launcher.jar.error1", jarname);
}
return null;
}
public static String getLibrary(ClassPath classPath, String resource) {
// Find as resource as a class
String classNameAsPath = resource.replace('.', '/') + ".class";
FileObject classResource = classPath.findResource(classNameAsPath);
if (classResource == null) {
// Find as resource as a package
classNameAsPath = resource.replace('.', '/');
classResource = classPath.findResource(classNameAsPath);
}
if (classResource != null) {
FileObject archiveFile = FileUtil.getArchiveFile(classResource);
if (archiveFile != null && FileUtil.isArchiveFile(archiveFile)) {
File toFile = FileUtil.toFile(archiveFile);
try {
JarFile jf = new JarFile(toFile);
Manifest manifest = jf.getManifest();
Attributes mainAttributes = manifest.getMainAttributes();
// Find library version by Bundle information (Eclipse/OSGi)
if (mainAttributes.containsKey(BUNDLE_NAME) && mainAttributes.containsKey(BUNDLE_VERSION)) {
if (!mainAttributes.getValue(BUNDLE_NAME).isEmpty()) {
return mainAttributes.getValue(BUNDLE_NAME);
}
}
// If unsuccessful, try by default Manifest Headers
if (mainAttributes.containsKey(Name.IMPLEMENTATION_TITLE) && mainAttributes.containsKey(Name.IMPLEMENTATION_VERSION)) {
if (!mainAttributes.getValue(Name.IMPLEMENTATION_TITLE).isEmpty()) {
return mainAttributes.getValue(Name.IMPLEMENTATION_TITLE);
}
}
} catch (IOException ex) {
Exceptions.printStackTrace(ex);
}
}
}
return null;
}
static String getMainClassFromJar(String jarname) {
String mainValue = null;
try (JarFile jarFile = new JarFile(jarname)) {
Manifest manifest = jarFile.getManifest();
if (manifest == null) {
abort(null, "java.launcher.jar.error2", jarname);
}
Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
mainValue = mainAttrs.getValue(MAIN_CLASS);
if (mainValue == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
/*
* Hand off to FXHelper if it detects a JavaFX application
* This must be done after ensuring a Main-Class entry
* exists to enforce compliance with the jar specification
*/
if (mainAttrs.containsKey(
new Attributes.Name(FXHelper.JAVAFX_APPLICATION_MARKER))) {
return FXHelper.class.getName();
}
return mainValue.trim();
} catch (IOException ioe) {
abort(ioe, "java.launcher.jar.error1", jarname);
}
return null;
}
static String getMainClassFromJar(String jarname) {
String mainValue = null;
try (JarFile jarFile = new JarFile(jarname)) {
Manifest manifest = jarFile.getManifest();
if (manifest == null) {
abort(null, "java.launcher.jar.error2", jarname);
}
Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
mainValue = mainAttrs.getValue(MAIN_CLASS);
if (mainValue == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
/*
* Hand off to FXHelper if it detects a JavaFX application
* This must be done after ensuring a Main-Class entry
* exists to enforce compliance with the jar specification
*/
if (mainAttrs.containsKey(
new Attributes.Name(FXHelper.JAVAFX_APPLICATION_MARKER))) {
return FXHelper.class.getName();
}
return mainValue.trim();
} catch (IOException ioe) {
abort(ioe, "java.launcher.jar.error1", jarname);
}
return null;
}
/**
* Returns <code>true</code> if this manifest has no entry or has only
* "Manifest-Version" entry.
*/
public boolean isEmpty() {
final Attributes mainAttributes = manifest.getMainAttributes();
if (mainAttributes.size() > 1) {
return false;
}
if (mainAttributes.size() == 1
&& !mainAttributes.containsKey(Attributes.Name.MANIFEST_VERSION)) {
return false;
}
return manifest.getEntries().size() == 0;
}
static String getMainClassFromJar(String jarname) {
String mainValue;
try (JarFile jarFile = new JarFile(jarname)) {
Manifest manifest = jarFile.getManifest();
if (manifest == null) {
abort(null, "java.launcher.jar.error2", jarname);
}
Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
// Main-Class
mainValue = mainAttrs.getValue(MAIN_CLASS);
if (mainValue == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
// Launcher-Agent-Class (only check for this when Main-Class present)
String agentClass = mainAttrs.getValue(LAUNCHER_AGENT_CLASS);
if (agentClass != null) {
ModuleLayer.boot().findModule("java.instrument").ifPresent(m -> {
try {
String cn = "sun.instrument.InstrumentationImpl";
Class<?> clazz = Class.forName(cn, false, null);
Method loadAgent = clazz.getMethod("loadAgent", String.class);
loadAgent.invoke(null, jarname);
} catch (Throwable e) {
if (e instanceof InvocationTargetException) e = e.getCause();
abort(e, "java.launcher.jar.error4", jarname);
}
});
}
// Add-Exports and Add-Opens
String exports = mainAttrs.getValue(ADD_EXPORTS);
if (exports != null) {
addExportsOrOpens(exports, false);
}
String opens = mainAttrs.getValue(ADD_OPENS);
if (opens != null) {
addExportsOrOpens(opens, true);
}
/*
* Hand off to FXHelper if it detects a JavaFX application
* This must be done after ensuring a Main-Class entry
* exists to enforce compliance with the jar specification
*/
if (mainAttrs.containsKey(
new Attributes.Name(JAVAFX_APPLICATION_MARKER))) {
FXHelper.setFXLaunchParameters(jarname, LM_JAR);
return FXHelper.class.getName();
}
return mainValue.trim();
} catch (IOException ioe) {
abort(ioe, "java.launcher.jar.error1", jarname);
}
return null;
}
static String getMainClassFromJar(String jarname) {
String mainValue;
try (JarFile jarFile = new JarFile(jarname)) {
Manifest manifest = jarFile.getManifest();
if (manifest == null) {
abort(null, "java.launcher.jar.error2", jarname);
}
Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
// Main-Class
mainValue = mainAttrs.getValue(MAIN_CLASS);
if (mainValue == null) {
abort(null, "java.launcher.jar.error3", jarname);
}
// Launcher-Agent-Class (only check for this when Main-Class present)
String agentClass = mainAttrs.getValue(LAUNCHER_AGENT_CLASS);
if (agentClass != null) {
ModuleLayer.boot().findModule("java.instrument").ifPresent(m -> {
try {
String cn = "sun.instrument.InstrumentationImpl";
Class<?> clazz = Class.forName(cn, false, null);
Method loadAgent = clazz.getMethod("loadAgent", String.class);
loadAgent.invoke(null, jarname);
} catch (Throwable e) {
if (e instanceof InvocationTargetException) e = e.getCause();
abort(e, "java.launcher.jar.error4", jarname);
}
});
}
// Add-Exports and Add-Opens
String exports = mainAttrs.getValue(ADD_EXPORTS);
if (exports != null) {
addExportsOrOpens(exports, false);
}
String opens = mainAttrs.getValue(ADD_OPENS);
if (opens != null) {
addExportsOrOpens(opens, true);
}
/*
* Hand off to FXHelper if it detects a JavaFX application
* This must be done after ensuring a Main-Class entry
* exists to enforce compliance with the jar specification
*/
if (mainAttrs.containsKey(
new Attributes.Name(JAVAFX_APPLICATION_MARKER))) {
FXHelper.setFXLaunchParameters(jarname, LM_JAR);
return FXHelper.class.getName();
}
return mainValue.trim();
} catch (IOException ioe) {
abort(ioe, "java.launcher.jar.error1", jarname);
}
return null;
}
private static MCRComponent buildComponent(Manifest manifest, URL manifestURL) throws IOException {
Attributes mainAttributes = manifest.getMainAttributes();
String artifactId = mainAttributes.getValue(ATT_MCR_ARTIFACT_ID);
String pomPropertiesPath = mainAttributes.getValue(ATT_POM);
boolean usePomProperties = false;
if (artifactId == null) {
if (!mainAttributes.containsKey(ATT_POM)) {
return null;
}
if (pomPropertiesPath == null) {
return null;
}
try (InputStream pi = MCRClassTools.getClassLoader().getResourceAsStream(
pomPropertiesPath)) {
if (pi == null) {
LOGGER.warn("Manifest entry {} set to \"{}\", but resource could not be loaded.", ATT_POM,
pomPropertiesPath);
return null;
}
Properties pomProperties = new Properties();
pomProperties.load(pi);
artifactId = (String) pomProperties.get("artifactId");
usePomProperties = true;
}
}
if (artifactId != null && artifactId.startsWith("mycore-")
|| mainAttributes.containsKey(ATT_MCR_APPLICATION_MODULE)) {
if (usePomProperties) {
LOGGER.warn("No Attribute \"{}\" in Manifest of {}.", ATT_MCR_ARTIFACT_ID,
mainAttributes.getValue(ATT_MCR_APPLICATION_MODULE));
LOGGER.warn("Change this in the future, pom.properties path definition is deprecated.");
LOGGER.info("Using artifactId in {}.", pomPropertiesPath);
}
return new MCRComponent(artifactId, manifest, extractJarFile(manifestURL));
}
return null;
}
private static boolean isValidBundle(Manifest manifest) {
Attributes atts = manifest.getMainAttributes();
return atts.containsKey(new Attributes.Name(Constants.BUNDLE_MANIFESTVERSION));
}