spring JarModeLibrary 源码
springboot JarModeLibrary 代码
文件路径：/spring-boot-project/spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/JarModeLibrary.java
/*
* Copyright 2012-2021 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
* limitations under the License.
*/
package org.springframework.boot.loader.tools;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* {@link Library} implementation for internal jarmode jars.
*
* @author Phillip Webb
* @since 2.3.0
*/
public class JarModeLibrary extends Library {
/**
* {@link JarModeLibrary} for layer tools.
*/
public static final JarModeLibrary LAYER_TOOLS = new JarModeLibrary("spring-boot-jarmode-layertools");
JarModeLibrary(String artifactId) {
this(createCoordinates(artifactId));
}
public JarModeLibrary(LibraryCoordinates coordinates) {
super(getJarName(coordinates), null, LibraryScope.RUNTIME, coordinates, false, false, true);
}
private static LibraryCoordinates createCoordinates(String artifactId) {
String version = JarModeLibrary.class.getPackage().getImplementationVersion();
return LibraryCoordinates.of("org.springframework.boot", artifactId, version);
}
private static String getJarName(LibraryCoordinates coordinates) {
String version = coordinates.getVersion();
StringBuilder jarName = new StringBuilder(coordinates.getArtifactId());
if (StringUtils.hasText(version)) {
jarName.append('-');
jarName.append(version);
}
jarName.append(".jar");
return jarName.toString();
}
@Override
public InputStream openStream() throws IOException {
String path = "META-INF/jarmode/" + getCoordinates().getArtifactId() + ".jar";
URL resource = getClass().getClassLoader().getResource(path);
Assert.state(resource != null, () -> "Unable to find resource " + path);
return resource.openStream();
}
@Override
long getLastModified() {
return 0L;
}
@Override
public File getFile() {
throw new UnsupportedOperationException("Unable to access jar mode library file");
}
}
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- 本文标签： Spring Boot Java Spring
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