搭建Spring Boot中使用Swagger2构建RESTful APIs的代码详情-代码-最代码

首页>代码>搭建Spring Boot中使用Swagger2构建RESTful APIs>/sm/.mvn/wrapper/MavenWrapperDownloader.java
001/*
002 * Copyright 2007-present the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016 
017import java.net.*;
018import java.io.*;
019import java.nio.channels.*;
020import java.util.Properties;
021 
022public class MavenWrapperDownloader {
023 
024    private static final String WRAPPER_VERSION = "0.5.6";
025    /**
026     * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
027     */
028    private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
029            + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
030 
031    /**
032     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
033     * use instead of the default one.
034     */
035    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
036            ".mvn/wrapper/maven-wrapper.properties";
037 
038    /**
039     * Path where the maven-wrapper.jar will be saved to.
040     */
041    private static final String MAVEN_WRAPPER_JAR_PATH =
042            ".mvn/wrapper/maven-wrapper.jar";
043 
044    /**
045     * Name of the property which should be used to override the default download url for the wrapper.
046     */
047    private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
048 
049    public static void main(String args[]) {
050        System.out.println("- Downloader started");
051        File baseDirectory = new File(args[0]);
052        System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
053 
054        // If the maven-wrapper.properties exists, read it and check if it contains a custom
055        // wrapperUrl parameter.
056        File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
057        String url = DEFAULT_DOWNLOAD_URL;
058        if (mavenWrapperPropertyFile.exists()) {
059            FileInputStream mavenWrapperPropertyFileInputStream = null;
060            try {
061                mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
062                Properties mavenWrapperProperties = new Properties();
063                mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
064                url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
065            } catch (IOException e) {
066                System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
067            } finally {
068                try {
069                    if (mavenWrapperPropertyFileInputStream != null) {
070                        mavenWrapperPropertyFileInputStream.close();
071                    }
072                } catch (IOException e) {
073                    // Ignore ...
074                }
075            }
076        }
077        System.out.println("- Downloading from: " + url);
078 
079        File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
080        if (!outputFile.getParentFile().exists()) {
081            if (!outputFile.getParentFile().mkdirs()) {
082                System.out.println(
083                        "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
084            }
085        }
086        System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
087        try {
088            downloadFileFromURL(url, outputFile);
089            System.out.println("Done");
090            System.exit(0);
091        } catch (Throwable e) {
092            System.out.println("- Error downloading");
093            e.printStackTrace();
094            System.exit(1);
095        }
096    }
097 
098    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
099        if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
100            String username = System.getenv("MVNW_USERNAME");
101            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
102            Authenticator.setDefault(new Authenticator() {
103                @Override
104                protected PasswordAuthentication getPasswordAuthentication() {
105                    return new PasswordAuthentication(username, password);
106                }
107            });
108        }
109        URL website = new URL(urlString);
110        ReadableByteChannel rbc;
111        rbc = Channels.newChannel(website.openStream());
112        FileOutputStream fos = new FileOutputStream(destination);
113        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
114        fos.close();
115        rbc.close();
116    }
117 
118}