spring ExtractResources 源码
springboot ExtractResources 代码
文件路径：/buildSrc/src/main/java/org/springframework/boot/build/ExtractResources.java
/*
* Copyright 2012-2022 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.build;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.gradle.api.DefaultTask;
import org.gradle.api.GradleException;
import org.gradle.api.Task;
import org.gradle.api.file.DirectoryProperty;
import org.gradle.api.tasks.Input;
import org.gradle.api.tasks.OutputDirectory;
import org.gradle.api.tasks.TaskAction;
import org.springframework.util.FileCopyUtils;
import org.springframework.util.PropertyPlaceholderHelper;
/**
* {@link Task} to extract resources from the classpath and write them to disk.
*
* @author Andy Wilkinson
*/
public class ExtractResources extends DefaultTask {
private final PropertyPlaceholderHelper propertyPlaceholderHelper = new PropertyPlaceholderHelper("${", "}");
private final Map<String, String> properties = new HashMap<>();
private final DirectoryProperty destinationDirectory;
private List<String> resourceNames = new ArrayList<>();
public ExtractResources() {
this.destinationDirectory = getProject().getObjects().directoryProperty();
}
@Input
public List<String> getResourceNames() {
return this.resourceNames;
}
public void setResourcesNames(List<String> resourceNames) {
this.resourceNames = resourceNames;
}
@OutputDirectory
public DirectoryProperty getDestinationDirectory() {
return this.destinationDirectory;
}
public void property(String name, String value) {
this.properties.put(name, value);
}
@Input
public Map<String, String> getProperties() {
return this.properties;
}
@TaskAction
void extractResources() throws IOException {
for (String resourceName : this.resourceNames) {
InputStream resourceStream = getClass().getClassLoader().getResourceAsStream(resourceName);
if (resourceStream == null) {
throw new GradleException("Resource '" + resourceName + "' does not exist");
}
String resource = FileCopyUtils.copyToString(new InputStreamReader(resourceStream, StandardCharsets.UTF_8));
resource = this.propertyPlaceholderHelper.replacePlaceholders(resource, this.properties::get);
FileCopyUtils.copy(resource,
new FileWriter(this.destinationDirectory.file(resourceName).get().getAsFile()));
}
}
}
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- 所属分类： 后端技术
- 本文标签： Spring Boot Spring Java
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