下面列出了java.nio.charset.Charset#availableCharsets ( ) 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 void initCharsets() {
SortedMap m = Charset.availableCharsets();
Set k = m.keySet();
names = new String[m.size()];
Iterator iterator = k.iterator();
int i = 0;
while (iterator.hasNext()) {
String n = (String) iterator.next();
// Charset e = (Charset) m.get(n);
// String d = e.displayName();
// boolean c = e.canEncode();
// System.out.print(n+", "+d+", "+c);
// Set s = e.aliases();
// Iterator j = s.iterator();
// while (j.hasNext()) {
// String a = (String) j.next();
// System.out.print(", "+a);
// }
// System.out.println("");
names[i++] = n;
}
}
public static void main(String[] args) throws IOException {
SortedMap<String, Charset> map = Charset.availableCharsets();
for (String name : map.keySet()) {
Charset charset = map.get(name);
if (charset.canEncode() && !charset.name().equals("x-COMPOUND_TEXT")) {
testNormalSurrogate(charset, NORMAL_SURROGATE);
testMalformedSurrogate(charset, MALFORMED_SURROGATE);
testMalformedSurrogate(charset, REVERSED_SURROGATE);
testMalformedSurrogate(charset, SOLITARY_HIGH_SURROGATE);
testMalformedSurrogate(charset, SOLITARY_LOW_SURROGATE);
testSurrogateWithReplacement(charset, NORMAL_SURROGATE);
testSurrogateWithReplacement(charset, MALFORMED_SURROGATE);
testSurrogateWithReplacement(charset, REVERSED_SURROGATE);
testSurrogateWithReplacement(charset, SOLITARY_HIGH_SURROGATE);
testSurrogateWithReplacement(charset, SOLITARY_LOW_SURROGATE);
}
}
}
/**
* Creates the code pages.
*/
public void createCodePages() {
// Get supported encodings from JVM
Map<String, Charset> charsetMap = Charset.availableCharsets();
String sysCodePage = Charset.defaultCharset().name();
this.codePages = new ArrayList<>();
if (sysCodePage != null) {
this.codePages.add(sysCodePage);
if (this.codePage == null) {
this.codePage = sysCodePage;
}
}
for (String charsetName : charsetMap.keySet()) {
if (!this.codePages.contains(charsetName)) {
this.codePages.add(charsetName);
}
}
}
/**
* Test printout the JVM's supported charsets.
*/
@Test
public void testPrintoutSupportedCharsets() {
SortedMap<String, Charset> charsetMap = Charset.availableCharsets();
debugPrint("------------- availableCharsets ----------------");
for (Map.Entry<String, Charset> entry : charsetMap.entrySet()) {
String canonicalCharsetName = entry.getKey();
debugPrint(canonicalCharsetName);
Charset charset = entry.getValue();
Set<String> aliases = charset.aliases();
for (String alias : aliases) {
debugPrint("\t" + alias);
}
}
debugPrint("-----------------------------------------");
String[] perforceCharsets = PerforceCharsets.getKnownCharsets();
debugPrint("------------- perforceCharsets ----------------");
for (String perforceCharset : perforceCharsets) {
debugPrint(perforceCharset + " ... "
+ PerforceCharsets.getJavaCharsetName(perforceCharset));
}
debugPrint("-----------------------------------------");
debugPrint("-----------------------------------------");
debugPrint("Charset.defaultCharset().name(): " + Charset.defaultCharset().name());
debugPrint("-----------------------------------------");
}
public static void main(String[] args) throws IOException {
SortedMap<String, Charset> map = Charset.availableCharsets();
for (String name : map.keySet()) {
Charset charset = map.get(name);
if (charset.canEncode() && !charset.name().equals("x-COMPOUND_TEXT")) {
testNormalSurrogate(charset, NORMAL_SURROGATE);
testMalformedSurrogate(charset, MALFORMED_SURROGATE);
testMalformedSurrogate(charset, REVERSED_SURROGATE);
testMalformedSurrogate(charset, SOLITARY_HIGH_SURROGATE);
testMalformedSurrogate(charset, SOLITARY_LOW_SURROGATE);
testSurrogateWithReplacement(charset, NORMAL_SURROGATE);
testSurrogateWithReplacement(charset, MALFORMED_SURROGATE);
testSurrogateWithReplacement(charset, REVERSED_SURROGATE);
testSurrogateWithReplacement(charset, SOLITARY_HIGH_SURROGATE);
testSurrogateWithReplacement(charset, SOLITARY_LOW_SURROGATE);
}
}
}
public static CEncoding[] list()
{
if(encodings == null)
{
SortedMap<String,Charset> m = Charset.availableCharsets();
CEncoding[] a = new CEncoding[m.size()];
int ix = 0;
for(Charset cs: m.values())
{
a[ix++] = new CEncoding(cs);
}
encodings = a;
}
return encodings;
}
private static void printAllCharsets() {
Map<String, Charset> all = Charset.availableCharsets();
System.out.println("\n=========================================\n");
for (String can : all.keySet()) {
System.out.println(can + ": " + all.get(can).aliases());
}
}
private static void printAllCharsets() {
Map<String, Charset> all = Charset.availableCharsets();
System.out.println("\n=========================================\n");
for (String can : all.keySet()) {
System.out.println(can + ": " + all.get(can).aliases());
}
}
public static void main(String[] args) {
// System.out.println(CheckPassword.checkPassword("123aA!"));
// DateTime dateTime = DateUtil.parseUTC("2019-04-04T10:11:21Z");
// System.out.println(dateTime);
// dateTime.setTimeZone(TimeZone.getDefault());
// System.out.println(dateTime);
Pattern pattern = Pattern.compile("(https://|http://)?([\\w-]+\\.)+[\\w-]+(:\\d+|/)+([\\w- ./?%&=]*)?");
String url = "http://192.168.1.111:2122/node/index.html?nodeId=dyc";
System.out.println(ReUtil.isMatch(pattern, url));
System.out.println(ReUtil.isMatch(PatternPool.URL_HTTP, url));
// System.out.println(FileUtil.file("/a", null, "", "ss"));
System.out.println(Math.pow(1024, 2));
System.out.println(Integer.MAX_VALUE);
while (true) {
SortedMap<String, Charset> x = Charset.availableCharsets();
Collection<Charset> values = x.values();
boolean find = false;
for (Charset charset : values) {
String name = charset.name();
if ("utf-8".equalsIgnoreCase(name)) {
find = true;
break;
}
}
if (!find) {
System.out.println("没有找utf-8");
}
}
// System.out.println(x);
}
private static void printAllCharsets() {
Map<String, Charset> all = Charset.availableCharsets();
System.out.println("\n=========================================\n");
for (String can : all.keySet()) {
System.out.println(can + ": " + all.get(can).aliases());
}
}
/**
* Test printout the JVM's supported charsets.
*/
@Test
public void testPrintoutSupportedCharsets() {
SortedMap<String, Charset> charsetMap = Charset.availableCharsets();
debugPrint("------------- availableCharsets ----------------");
for (Map.Entry<String, Charset> entry : charsetMap.entrySet()) {
String canonicalCharsetName = entry.getKey();
debugPrint(canonicalCharsetName);
Charset charset = entry.getValue();
Set<String> aliases = charset.aliases();
for (String alias : aliases) {
debugPrint("\t" + alias);
}
}
debugPrint("-----------------------------------------");
String[] perforceCharsets = PerforceCharsets.getKnownCharsets();
debugPrint("------------- perforceCharsets ----------------");
for (String perforceCharset : perforceCharsets) {
debugPrint(perforceCharset + " ... " + PerforceCharsets.getJavaCharsetName(perforceCharset));
}
debugPrint("-----------------------------------------");
debugPrint("-----------------------------------------");
debugPrint("Charset.defaultCharset().name(): " + Charset.defaultCharset().name());
debugPrint("-----------------------------------------");
}
@Override
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException,
IOException {
try {
response.setContentType("text/xml");
response.setCharacterEncoding("UTF-8");
String locale = request.getParameter("locale");
// Avoid resource caching
response.setHeader("Pragma", "no-cache");
response.setHeader("Cache-Control", "no-store");
response.setDateHeader("Expires", 0);
PrintWriter writer = response.getWriter();
writer.print("<list>");
writer.print("<charset>");
writer.print("<code>auto</code>");
writer.print("<name>auto</name>");
writer.print("</charset>");
Map<String, Charset> charsets = Charset.availableCharsets();
for (String name : charsets.keySet()) {
writer.print("<charset>");
writer.print("<code><![CDATA[" + name + "]]></code>");
writer.print("<name><![CDATA[" + charsets.get(name).displayName(LocaleUtil.toLocale(locale))
+ "]]></name>");
writer.print("</charset>");
}
writer.print("</list>");
} catch (Throwable e) {
log.error(e.getMessage(), e);
if (e instanceof ServletException)
throw (ServletException) e;
else if (e instanceof IOException)
throw (IOException) e;
else
throw new ServletException(e.getMessage(), e);
}
}
CompMenuForm(final UserRequest ureq, final WindowControl wControl, final Boolean compMenuConfig, final String contentEncoding, final String jsEncoding) {
super(ureq, wControl);
this.compMenuConfig = compMenuConfig == null ? true : compMenuConfig.booleanValue();
this.contentEncoding = contentEncoding;
this.jsEncoding = jsEncoding;
final Map<String, Charset> charsets = Charset.availableCharsets();
final int numOfCharsets = charsets.size() + 1;
encodingContentKeys = new String[numOfCharsets];
encodingContentKeys[0] = NodeEditController.CONFIG_CONTENT_ENCODING_AUTO;
encodingContentValues = new String[numOfCharsets];
encodingContentValues[0] = translate("encoding.auto");
encodingJSKeys = new String[numOfCharsets];
encodingJSKeys[0] = NodeEditController.CONFIG_JS_ENCODING_AUTO;
encodingJSValues = new String[numOfCharsets];
encodingJSValues[0] = translate("encoding.same");
int count = 1;
final Locale locale = ureq.getLocale();
for (final Map.Entry<String, Charset> charset : charsets.entrySet()) {
encodingContentKeys[count] = charset.getKey();
encodingContentValues[count] = charset.getValue().displayName(locale);
encodingJSKeys[count] = charset.getKey();
encodingJSValues[count] = charset.getValue().displayName(locale);
count++;
}
initForm(ureq);
}
private static void printAllCharsets() {
Map<String, Charset> all = Charset.availableCharsets();
System.out.println("\n=========================================\n");
for (String can : all.keySet()) {
System.out.println(can + ": " + all.get(can).aliases());
}
}
/**
* Constructor
*/
public ShapeFileChooser() {
super();
encodingCB = new JComboBox();
SortedMap m = Charset.availableCharsets();
DefaultComboBoxModel cbm = new DefaultComboBoxModel();
cbm.addElement("System");
Iterator ir = m.keySet().iterator();
while (ir.hasNext()) {
String n = (String) ir.next();
Charset e = (Charset) m.get(n);
cbm.addElement(e.displayName());
}
encodingCB.setModel(cbm);
panel = new JPanel(new GridBagLayout());
GridBagConstraints constraints = new GridBagConstraints();
constraints.anchor = GridBagConstraints.WEST;
constraints.insets = new Insets(5, 10, 0, 0);
constraints.gridx = 0;
constraints.gridy = 0;
panel.add(new JLabel("Encoding:"), constraints);
constraints.gridy = 1;
panel.add(encodingCB, constraints);
setAccessory(panel);
//panel.setVisible(false);
this.addPropertyChangeListener(new PropertyChangeListener() {
@Override
public void propertyChange(PropertyChangeEvent pce) {
String prop = pce.getPropertyName();
//If a file became selected, find out which one.
if (JFileChooser.SELECTED_FILE_CHANGED_PROPERTY.equals(prop)) {
File file = (File) pce.getNewValue();
if (file != null && file.isFile()){
String fn = file.getAbsolutePath();
if (fn.toLowerCase().endsWith(".shp")) {
String encoding = IOUtil.encodingDetectShp(fn);
if (encoding.equals("ISO8859_1"))
encoding = "UTF-8";
encodingCB.setSelectedItem(encoding);
panel.setVisible(true);
} else {
panel.setVisible(false);
}
repaint();
}
}
}
});
}
/**
* 当前Java虚拟机支持的charset.
*/
public static SortedMap<String, Charset> availableCharsets() {
return Charset.availableCharsets();
}
/**
* Test sync utf16-le encoded files: UTF-16LE BOM: ff fe
*/
@Test
public void testSyncUtf16leFiles() {
String depotFile = null;
try {
IClient client = server.getClient("p4TestUserWS20112Windows");
server.setCurrentClient(client);
SortedMap<String, Charset> charsetMap = Charset.availableCharsets();
debugPrint("------------- availableCharsets ----------------");
for (Map.Entry<String, Charset> entry : charsetMap.entrySet()) {
String canonicalCharsetName = entry.getKey();
debugPrint(canonicalCharsetName);
Charset charset = entry.getValue();
Set<String> aliases = charset.aliases();
for (String alias : aliases) {
debugPrint("\t" + alias);
}
}
debugPrint("-----------------------------------------");
String[] perforceCharsets = PerforceCharsets.getKnownCharsets();
debugPrint("------------- perforceCharsets ----------------");
for (String perforceCharset : perforceCharsets) {
debugPrint(perforceCharset + " ... "
+ PerforceCharsets.getJavaCharsetName(perforceCharset));
}
debugPrint("-----------------------------------------");
debugPrint("-----------------------------------------");
debugPrint("Charset.defaultCharset().name(): "
+ Charset.defaultCharset().name());
debugPrint("-----------------------------------------");
depotFile = "//depot/152Bugs/utf16-be/utf16-be.xbit";
List<IFileSpec> files = client.sync(
FileSpecBuilder.makeFileSpecList(depotFile),
new SyncOptions().setForceUpdate(true));
assertNotNull(files);
} catch (P4JavaException e) {
fail("Unexpected exception: " + e.getLocalizedMessage());
}
}
/**
* Test sync utf16-le encoded files: UTF-16LE BOM: ff fe
*/
@Test
public void testSyncUtf16leFiles() {
String depotFile = null;
try {
IClient client = server.getClient("p4TestUserWS20112Windows");
server.setCurrentClient(client);
SortedMap<String, Charset> charsetMap = Charset.availableCharsets();
debugPrint("------------- availableCharsets ----------------");
for (Map.Entry<String, Charset> entry : charsetMap.entrySet()) {
String canonicalCharsetName = entry.getKey();
debugPrint(canonicalCharsetName);
Charset charset = entry.getValue();
Set<String> aliases = charset.aliases();
for (String alias : aliases) {
debugPrint("\t" + alias);
}
}
debugPrint("-----------------------------------------");
String[] perforceCharsets = PerforceCharsets.getKnownCharsets();
debugPrint("------------- perforceCharsets ----------------");
for (String perforceCharset : perforceCharsets) {
debugPrint(perforceCharset + " ... "
+ PerforceCharsets.getJavaCharsetName(perforceCharset));
}
debugPrint("-----------------------------------------");
debugPrint("-----------------------------------------");
debugPrint("Charset.defaultCharset().name(): "
+ Charset.defaultCharset().name());
debugPrint("-----------------------------------------");
depotFile = "//depot/152Bugs/utf16-be/utf16-be.xbit";
List<IFileSpec> files = client.sync(
FileSpecBuilder.makeFileSpecList(depotFile),
new SyncOptions().setForceUpdate(true));
assertNotNull(files);
} catch (P4JavaException e) {
fail("Unexpected exception: " + e.getLocalizedMessage());
}
}
/**
* Test sync utf16-le encoded files: UTF-16LE BOM: ff fe
*/
@Test
public void testSyncUtf16leFiles() {
String depotFile = null;
try {
IClient client = server.getClient("p4TestUserWS20112Windows");
server.setCurrentClient(client);
SortedMap<String, Charset> charsetMap = Charset.availableCharsets();
debugPrint("------------- availableCharsets ----------------");
for (Map.Entry<String, Charset> entry : charsetMap.entrySet()) {
String canonicalCharsetName = entry.getKey();
debugPrint(canonicalCharsetName);
Charset charset = entry.getValue();
Set<String> aliases = charset.aliases();
for (String alias : aliases) {
debugPrint("\t" + alias);
}
}
debugPrint("-----------------------------------------");
String[] perforceCharsets = PerforceCharsets.getKnownCharsets();
debugPrint("------------- perforceCharsets ----------------");
for (String perforceCharset : perforceCharsets) {
debugPrint(perforceCharset + " ... "
+ PerforceCharsets.getJavaCharsetName(perforceCharset));
}
debugPrint("-----------------------------------------");
debugPrint("-----------------------------------------");
debugPrint("Charset.defaultCharset().name(): "
+ Charset.defaultCharset().name());
debugPrint("-----------------------------------------");
depotFile = "//depot/152Bugs/utf16-be/utf16-be.xbit";
List<IFileSpec> files = client.sync(
FileSpecBuilder.makeFileSpecList(depotFile),
new SyncOptions().setForceUpdate(true));
assertNotNull(files);
} catch (P4JavaException e) {
fail("Unexpected exception: " + e.getLocalizedMessage());
}
}
/**
* org.olat.presentation.framework.control.Controller, org.olat.presentation.framework.UserRequest)
*/
@Override
protected void initForm(final FormItemContainer formLayout, final Controller listener, final UserRequest ureq) {
setFormTitle("title.prefs");
setFormContextHelp(this.getClass().getPackage().getName(), "home-prefs.html", "help.hover.prefs");
// load preferences
final Preferences prefs = tobeChangedIdentity.getUser().getPreferences();
// Username
final StaticTextElement username = uifactory.addStaticTextElement("form.username", tobeChangedIdentity.getName(), formLayout);
username.setEnabled(false);
// Language
final Map<String, String> languages = I18nManager.getInstance().getEnabledLanguagesTranslated();
final String[] langKeys = StringHelper.getMapKeysAsStringArray(languages);
final String[] langValues = StringHelper.getMapValuesAsStringArray(languages);
ArrayHelper.sort(langKeys, langValues, false, true, false);
language = uifactory.addDropdownSingleselect("form.language", formLayout, langKeys, langValues, null);
final String langKey = prefs.getLanguage();
// Preselect the users language if available. Maye not anymore enabled on
// this server
if (prefs.getLanguage() != null && I18nModule.getEnabledLanguageKeys().contains(langKey)) {
language.select(prefs.getLanguage(), true);
} else {
language.select(I18nModule.getDefaultLocale().toString(), true);
}
// Font size
final String[] cssFontsizeValues = new String[] { translate("form.fontsize.xsmall"), translate("form.fontsize.small"), translate("form.fontsize.normal"),
translate("form.fontsize.large"), translate("form.fontsize.xlarge"), translate("form.fontsize.presentation") };
fontsize = uifactory.addDropdownSingleselect("form.fontsize", formLayout, cssFontsizeKeys, cssFontsizeValues, null);
fontsize.select(prefs.getFontsize(), true);
fontsize.addActionListener(this, FormEvent.ONCHANGE);
// Text encoding
final Map<String, Charset> charsets = Charset.availableCharsets();
final String currentCharset = getUserService().getUserCharset(tobeChangedIdentity);
final String[] csKeys = StringHelper.getMapKeysAsStringArray(charsets);
charset = uifactory.addDropdownSingleselect("form.charset", formLayout, csKeys, csKeys, null);
charset.select(currentCharset, true);
// Submit and cancel buttons
final FormLayoutContainer buttonLayout = FormLayoutContainer.createButtonLayout("button_layout", getTranslator());
formLayout.add(buttonLayout);
uifactory.addFormSubmitButton("submit", buttonLayout);
uifactory.addFormCancelButton("cancel", buttonLayout, ureq, getWindowControl());
}