spring JavaExecutable 源码
springboot JavaExecutable 代码
文件路径：/spring-boot-project/spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/JavaExecutable.java
/*
* Copyright 2012-2019 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.util.Arrays;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* Provides access to the java binary executable, regardless of OS.
*
* @author Phillip Webb
* @since 1.1.0
*/
public class JavaExecutable {
private File file;
public JavaExecutable() {
String javaHome = System.getProperty("java.home");
Assert.state(StringUtils.hasLength(javaHome), "Unable to find java executable due to missing 'java.home'");
this.file = findInJavaHome(javaHome);
}
private File findInJavaHome(String javaHome) {
File bin = new File(new File(javaHome), "bin");
File command = new File(bin, "java.exe");
command = command.exists() ? command : new File(bin, "java");
Assert.state(command.exists(), () -> "Unable to find java in " + javaHome);
return command;
}
/**
* Create a new {@link ProcessBuilder} that will run with the Java executable.
* @param arguments the command arguments
* @return a {@link ProcessBuilder}
*/
public ProcessBuilder processBuilder(String... arguments) {
ProcessBuilder processBuilder = new ProcessBuilder(toString());
processBuilder.command().addAll(Arrays.asList(arguments));
return processBuilder;
}
@Override
public String toString() {
try {
return this.file.getCanonicalPath();
}
catch (IOException ex) {
throw new IllegalStateException(ex);
}
}
}
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- 所属分类： 后端技术
- 本文标签： Spring Boot Java Spring
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