spring EnvVariables 源码
springboot EnvVariables 代码
文件路径：/spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/main/java/org/springframework/boot/maven/EnvVariables.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.maven;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
/**
* Utility class for working with Env variables.
*
* @author Dmytro Nosan
*/
class EnvVariables {
private final Map<String, String> variables;
EnvVariables(Map<String, String> variables) {
this.variables = parseEnvVariables(variables);
}
private static Map<String, String> parseEnvVariables(Map<String, String> args) {
if (args == null || args.isEmpty()) {
return Collections.emptyMap();
}
Map<String, String> result = new LinkedHashMap<>();
for (Map.Entry<String, String> e : args.entrySet()) {
if (e.getKey() != null) {
result.put(e.getKey(), getValue(e.getValue()));
}
}
return result;
}
private static String getValue(String value) {
return (value != null) ? value : "";
}
Map<String, String> asMap() {
return Collections.unmodifiableMap(this.variables);
}
String[] asArray() {
List<String> args = new ArrayList<>(this.variables.size());
for (Map.Entry<String, String> arg : this.variables.entrySet()) {
args.add(arg.getKey() + "=" + arg.getValue());
}
return args.toArray(new String[0]);
}
}
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- 本文标签： Spring Boot Java Spring
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