/*
 * Copyright 2002-2016 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
 *
 *      https://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
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package org.springframework.beans.propertyeditors;

import java.beans.PropertyEditorSupport;
import java.io.IOException;

import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceEditor;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

One-way PropertyEditor which can convert from a text String to a java.io.InputStream, interpreting the given String as a Spring resource location (e.g. a URL String).

Supports Spring-style URL notation: any fully qualified standard URL ("file:", "http:", etc.) and Spring's special "classpath:" pseudo-URL.

Note that such streams usually do not get closed by Spring itself!

Author:Juergen Hoeller
See Also:
Since:1.0.1
/** * One-way PropertyEditor which can convert from a text String to a * {@code java.io.InputStream}, interpreting the given String as a * Spring resource location (e.g. a URL String). * * <p>Supports Spring-style URL notation: any fully qualified standard URL * ("file:", "http:", etc.) and Spring's special "classpath:" pseudo-URL. * * <p>Note that such streams usually do not get closed by Spring itself! * * @author Juergen Hoeller * @since 1.0.1 * @see java.io.InputStream * @see org.springframework.core.io.ResourceEditor * @see org.springframework.core.io.ResourceLoader * @see URLEditor * @see FileEditor */
public class InputStreamEditor extends PropertyEditorSupport { private final ResourceEditor resourceEditor;
Create a new InputStreamEditor, using the default ResourceEditor underneath.
/** * Create a new InputStreamEditor, using the default ResourceEditor underneath. */
public InputStreamEditor() { this.resourceEditor = new ResourceEditor(); }
Create a new InputStreamEditor, using the given ResourceEditor underneath.
Params:
  • resourceEditor – the ResourceEditor to use
/** * Create a new InputStreamEditor, using the given ResourceEditor underneath. * @param resourceEditor the ResourceEditor to use */
public InputStreamEditor(ResourceEditor resourceEditor) { Assert.notNull(resourceEditor, "ResourceEditor must not be null"); this.resourceEditor = resourceEditor; } @Override public void setAsText(String text) throws IllegalArgumentException { this.resourceEditor.setAsText(text); Resource resource = (Resource) this.resourceEditor.getValue(); try { setValue(resource != null ? resource.getInputStream() : null); } catch (IOException ex) { throw new IllegalArgumentException("Failed to retrieve InputStream for " + resource, ex); } }
This implementation returns null to indicate that there is no appropriate text representation.
/** * This implementation returns {@code null} to indicate that * there is no appropriate text representation. */
@Override @Nullable public String getAsText() { return null; } }