org.springframework.boot.maven.SpringBootApplicationClassFinder Maven / Gradle / Ivy
/*
* Copyright 2012-2023 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.maven;
import java.io.File;
import java.io.IOException;
import java.util.List;
import org.apache.maven.plugin.MojoExecutionException;
import org.springframework.boot.loader.tools.MainClassFinder;
/**
* Find a single Spring Boot Application class match based on directory.
*
* @author Stephane Nicoll
* @see MainClassFinder
*/
abstract class SpringBootApplicationClassFinder {
private static final String SPRING_BOOT_APPLICATION_CLASS_NAME = "org.springframework.boot.autoconfigure.SpringBootApplication";
static String findSingleClass(File classesDirectory) throws MojoExecutionException {
return findSingleClass(List.of(classesDirectory));
}
static String findSingleClass(List classesDirectories) throws MojoExecutionException {
try {
for (File classesDirectory : classesDirectories) {
String mainClass = MainClassFinder.findSingleMainClass(classesDirectory,
SPRING_BOOT_APPLICATION_CLASS_NAME);
if (mainClass != null) {
return mainClass;
}
}
throw new MojoExecutionException("Unable to find a suitable main class, please add a 'mainClass' property");
}
catch (IOException ex) {
throw new MojoExecutionException(ex.getMessage(), ex);
}
}
}