下面列出了org.springframework.util.ResourceUtils#useCachesIfNecessary ( ) 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。
/**
* This implementation opens an InputStream for the given URL.
* <p>It sets the {@code useCaches} flag to {@code false},
* mainly to avoid jar file locking on Windows.
* @see java.net.URL#openConnection()
* @see java.net.URLConnection#setUseCaches(boolean)
* @see java.net.URLConnection#getInputStream()
*/
@Override
public InputStream getInputStream() throws IOException {
URLConnection con = this.url.openConnection();
ResourceUtils.useCachesIfNecessary(con);
try {
return con.getInputStream();
}
catch (IOException ex) {
// Close the HTTP connection (if applicable).
if (con instanceof HttpURLConnection) {
((HttpURLConnection) con).disconnect();
}
throw ex;
}
}
/**
* This implementation opens an InputStream for the given URL.
* <p>It sets the {@code useCaches} flag to {@code false},
* mainly to avoid jar file locking on Windows.
* @see java.net.URL#openConnection()
* @see java.net.URLConnection#setUseCaches(boolean)
* @see java.net.URLConnection#getInputStream()
*/
@Override
public InputStream getInputStream() throws IOException {
URLConnection con = this.url.openConnection();
ResourceUtils.useCachesIfNecessary(con);
try {
return con.getInputStream();
}
catch (IOException ex) {
// Close the HTTP connection (if applicable).
if (con instanceof HttpURLConnection) {
((HttpURLConnection) con).disconnect();
}
throw ex;
}
}
/**
* This implementation opens an InputStream for the given URL.
* <p>It sets the {@code useCaches} flag to {@code false},
* mainly to avoid jar file locking on Windows.
* @see java.net.URL#openConnection()
* @see java.net.URLConnection#setUseCaches(boolean)
* @see java.net.URLConnection#getInputStream()
*/
@Override
public InputStream getInputStream() throws IOException {
URLConnection con = this.url.openConnection();
ResourceUtils.useCachesIfNecessary(con);
try {
return con.getInputStream();
}
catch (IOException ex) {
// Close the HTTP connection (if applicable).
if (con instanceof HttpURLConnection) {
((HttpURLConnection) con).disconnect();
}
throw ex;
}
}
/**
* This implementation opens an InputStream for the given URL.
* <p>It sets the {@code useCaches} flag to {@code false},
* mainly to avoid jar file locking on Windows.
* @see java.net.URL#openConnection()
* @see java.net.URLConnection#setUseCaches(boolean)
* @see java.net.URLConnection#getInputStream()
*/
@Override
public InputStream getInputStream() throws IOException {
URLConnection con = this.url.openConnection();
ResourceUtils.useCachesIfNecessary(con);
try {
return con.getInputStream();
}
catch (IOException ex) {
// Close the HTTP connection (if applicable).
if (con instanceof HttpURLConnection) {
((HttpURLConnection) con).disconnect();
}
throw ex;
}
}
/**
* Load all properties from the specified class path resource
* (in ISO-8859-1 encoding), using the given class loader.
* <p>Merges properties if more than one resource of the same name
* found in the class path.
* @param resourceName the name of the class path resource
* @param classLoader the ClassLoader to use for loading
* (or {@code null} to use the default class loader)
* @return the populated Properties instance
* @throws IOException if loading failed
*/
public static Properties loadAllProperties(String resourceName, @Nullable ClassLoader classLoader) throws IOException {
Assert.notNull(resourceName, "Resource name must not be null");
ClassLoader classLoaderToUse = classLoader;
if (classLoaderToUse == null) {
classLoaderToUse = ClassUtils.getDefaultClassLoader();
}
Enumeration<URL> urls = (classLoaderToUse != null ? classLoaderToUse.getResources(resourceName) :
ClassLoader.getSystemResources(resourceName));
Properties props = new Properties();
while (urls.hasMoreElements()) {
URL url = urls.nextElement();
URLConnection con = url.openConnection();
ResourceUtils.useCachesIfNecessary(con);
InputStream is = con.getInputStream();
try {
if (resourceName.endsWith(XML_FILE_EXTENSION)) {
props.loadFromXML(is);
}
else {
props.load(is);
}
}
finally {
is.close();
}
}
return props;
}
/**
* Load all properties from the specified class path resource
* (in ISO-8859-1 encoding), using the given class loader.
* <p>Merges properties if more than one resource of the same name
* found in the class path.
* @param resourceName the name of the class path resource
* @param classLoader the ClassLoader to use for loading
* (or {@code null} to use the default class loader)
* @return the populated Properties instance
* @throws IOException if loading failed
*/
public static Properties loadAllProperties(String resourceName, @Nullable ClassLoader classLoader) throws IOException {
Assert.notNull(resourceName, "Resource name must not be null");
ClassLoader classLoaderToUse = classLoader;
if (classLoaderToUse == null) {
classLoaderToUse = ClassUtils.getDefaultClassLoader();
}
Enumeration<URL> urls = (classLoaderToUse != null ? classLoaderToUse.getResources(resourceName) :
ClassLoader.getSystemResources(resourceName));
Properties props = new Properties();
while (urls.hasMoreElements()) {
URL url = urls.nextElement();
URLConnection con = url.openConnection();
ResourceUtils.useCachesIfNecessary(con);
InputStream is = con.getInputStream();
try {
if (resourceName.endsWith(XML_FILE_EXTENSION)) {
props.loadFromXML(is);
}
else {
props.load(is);
}
}
finally {
is.close();
}
}
return props;
}
/**
* Load all properties from the specified class path resource
* (in ISO-8859-1 encoding), using the given class loader.
* <p>Merges properties if more than one resource of the same name
* found in the class path.
* @param resourceName the name of the class path resource
* @param classLoader the ClassLoader to use for loading
* (or {@code null} to use the default class loader)
* @return the populated Properties instance
* @throws IOException if loading failed
*/
public static Properties loadAllProperties(String resourceName, ClassLoader classLoader) throws IOException {
Assert.notNull(resourceName, "Resource name must not be null");
ClassLoader classLoaderToUse = classLoader;
if (classLoaderToUse == null) {
classLoaderToUse = ClassUtils.getDefaultClassLoader();
}
Enumeration<URL> urls = (classLoaderToUse != null ? classLoaderToUse.getResources(resourceName) :
ClassLoader.getSystemResources(resourceName));
Properties props = new Properties();
while (urls.hasMoreElements()) {
URL url = urls.nextElement();
URLConnection con = url.openConnection();
ResourceUtils.useCachesIfNecessary(con);
InputStream is = con.getInputStream();
try {
if (resourceName.endsWith(XML_FILE_EXTENSION)) {
props.loadFromXML(is);
}
else {
props.load(is);
}
}
finally {
is.close();
}
}
return props;
}
/**
* Load all properties from the specified class path resource
* (in ISO-8859-1 encoding), using the given class loader.
* <p>Merges properties if more than one resource of the same name
* found in the class path.
* @param resourceName the name of the class path resource
* @param classLoader the ClassLoader to use for loading
* (or {@code null} to use the default class loader)
* @return the populated Properties instance
* @throws IOException if loading failed
*/
public static Properties loadAllProperties(String resourceName, ClassLoader classLoader) throws IOException {
Assert.notNull(resourceName, "Resource name must not be null");
ClassLoader classLoaderToUse = classLoader;
if (classLoaderToUse == null) {
classLoaderToUse = ClassUtils.getDefaultClassLoader();
}
Enumeration<URL> urls = (classLoaderToUse != null ? classLoaderToUse.getResources(resourceName) :
ClassLoader.getSystemResources(resourceName));
Properties props = new Properties();
while (urls.hasMoreElements()) {
URL url = urls.nextElement();
URLConnection con = url.openConnection();
ResourceUtils.useCachesIfNecessary(con);
InputStream is = con.getInputStream();
try {
if (resourceName != null && resourceName.endsWith(XML_FILE_EXTENSION)) {
props.loadFromXML(is);
}
else {
props.load(is);
}
}
finally {
is.close();
}
}
return props;
}
/**
* Customize the given {@link URLConnection}, obtained in the course of an
* {@link #exists()}, {@link #contentLength()} or {@link #lastModified()} call.
* <p>Calls {@link ResourceUtils#useCachesIfNecessary(URLConnection)} and
* delegates to {@link #customizeConnection(HttpURLConnection)} if possible.
* Can be overridden in subclasses.
* @param con the URLConnection to customize
* @throws IOException if thrown from URLConnection methods
*/
protected void customizeConnection(URLConnection con) throws IOException {
ResourceUtils.useCachesIfNecessary(con);
if (con instanceof HttpURLConnection) {
customizeConnection((HttpURLConnection) con);
}
}
/**
* Customize the given {@link URLConnection}, obtained in the course of an
* {@link #exists()}, {@link #contentLength()} or {@link #lastModified()} call.
* <p>Calls {@link ResourceUtils#useCachesIfNecessary(URLConnection)} and
* delegates to {@link #customizeConnection(HttpURLConnection)} if possible.
* Can be overridden in subclasses.
* @param con the URLConnection to customize
* @throws IOException if thrown from URLConnection methods
*/
protected void customizeConnection(URLConnection con) throws IOException {
ResourceUtils.useCachesIfNecessary(con);
if (con instanceof HttpURLConnection) {
customizeConnection((HttpURLConnection) con);
}
}
/**
* Customize the given {@link URLConnection}, obtained in the course of an
* {@link #exists()}, {@link #contentLength()} or {@link #lastModified()} call.
* <p>Calls {@link ResourceUtils#useCachesIfNecessary(URLConnection)} and
* delegates to {@link #customizeConnection(HttpURLConnection)} if possible.
* Can be overridden in subclasses.
* @param con the URLConnection to customize
* @throws IOException if thrown from URLConnection methods
*/
protected void customizeConnection(URLConnection con) throws IOException {
ResourceUtils.useCachesIfNecessary(con);
if (con instanceof HttpURLConnection) {
customizeConnection((HttpURLConnection) con);
}
}
/**
* Customize the given {@link URLConnection}, obtained in the course of an
* {@link #exists()}, {@link #contentLength()} or {@link #lastModified()} call.
* <p>Calls {@link ResourceUtils#useCachesIfNecessary(URLConnection)} and
* delegates to {@link #customizeConnection(HttpURLConnection)} if possible.
* Can be overridden in subclasses.
* @param con the URLConnection to customize
* @throws IOException if thrown from URLConnection methods
*/
protected void customizeConnection(URLConnection con) throws IOException {
ResourceUtils.useCachesIfNecessary(con);
if (con instanceof HttpURLConnection) {
customizeConnection((HttpURLConnection) con);
}
}
/**
* Customize the given {@link URLConnection}, obtained in the course of an
* {@link #exists()}, {@link #contentLength()} or {@link #lastModified()}
* call.
* <p>
* Calls {@link ResourceUtils#useCachesIfNecessary(URLConnection)} and
* delegates to {@link #customizeConnection(HttpURLConnection)} if possible.
* Can be overridden in subclasses.
*
* @param con
* the URLConnection to customize
* @throws IOException
* if thrown from URLConnection methods
*/
protected void customizeConnection(URLConnection con) throws IOException {
ResourceUtils.useCachesIfNecessary(con);
if (con instanceof HttpURLConnection) {
customizeConnection((HttpURLConnection) con);
}
}