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Spring Framework example source code file (URIEditor.java)

This example Spring Framework source code file (URIEditor.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

bean, classloader, classpathresource, illegalargumentexception, illegalargumentexception, invalid, io, ioexception, javabean, net, network, propertyeditorsupport, string, string, uri, uri, urieditor, urisyntaxexception, urisyntaxexception

The Spring Framework URIEditor.java source code

/*
 * Copyright 2002-2007 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.beans.propertyeditors;

import java.beans.PropertyEditorSupport;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;

import org.springframework.core.io.ClassPathResource;
import org.springframework.util.ClassUtils;
import org.springframework.util.ResourceUtils;
import org.springframework.util.StringUtils;

/**
 * Editor for <code>java.net.URI, to directly populate a URI property
 * instead of using a String property as bridge.
 *
 * <p>Supports Spring-style URI notation: any fully qualified standard URI
 * ("file:", "http:", etc) and Spring's special "classpath:" pseudo-URL,
 * which will be resolved to a corresponding URI.
 *
 * <p>Note: A URI is more relaxed than a URL in that it does not require
 * a valid protocol to be specified. Any scheme within a valid URI syntax
 * is allowed, even without a matching protocol handler being registered.
 *
 * @author Juergen Hoeller
 * @since 2.0.2
 * @see java.net.URI
 * @see URLEditor
 */
public class URIEditor extends PropertyEditorSupport {

	private final ClassLoader classLoader;


	/**
	 * Create a new URIEditor, converting "classpath:" locations into
	 * standard URIs (not trying to resolve them into physical resources).
	 */
	public URIEditor() {
		this.classLoader = null;
	}

	/**
	 * Create a new URIEditor, using the given ClassLoader to resolve
	 * "classpath:" locations into physical resource URLs.
	 * @param classLoader the ClassLoader to use for resolving "classpath:" locations
	 * (may be <code>null to indicate the default ClassLoader)
	 */
	public URIEditor(ClassLoader classLoader) {
		this.classLoader = (classLoader != null ? classLoader : ClassUtils.getDefaultClassLoader());
	}


	public void setAsText(String text) throws IllegalArgumentException {
		if (StringUtils.hasText(text)) {
			String uri = text.trim();
			if (this.classLoader != null && uri.startsWith(ResourceUtils.CLASSPATH_URL_PREFIX)) {
				ClassPathResource resource =
						new ClassPathResource(uri.substring(ResourceUtils.CLASSPATH_URL_PREFIX.length()), this.classLoader);
				try {
					String url = resource.getURL().toString();
					setValue(createURI(url));
				}
				catch (IOException ex) {
					throw new IllegalArgumentException("Could not retrieve URI for " + resource + ": " + ex.getMessage());
				}
				catch (URISyntaxException ex) {
					throw new IllegalArgumentException("Invalid URI syntax: " + ex);
				}
			}
			else {
				try {
					setValue(createURI(uri));
				}
				catch (URISyntaxException ex) {
					throw new IllegalArgumentException("Invalid URI syntax: " + ex);
				}
			}
		}
		else {
			setValue(null);
		}
	}

	/**
	 * Create a URI instance for the given (resolved) String value.
	 * <p>The default implementation uses the URI(String)
	 * constructor, replacing spaces with "%20" quotes first.
	 * @param value the value to convert into a URI instance
	 * @return the URI instance
	 * @throws URISyntaxException if URI conversion failed
	 */
	protected URI createURI(String value) throws URISyntaxException {
		return new URI(StringUtils.replace(value, " ", "%20"));
	}


	public String getAsText() {
		URI value = (URI) getValue();
		return (value != null ? value.toString() : "");
	}

}

Other Spring Framework examples (source code examples)

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