/*
?*?Copyright?2007-present?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.
?*/

import?java.net.*;
import?java.io.*;
import?java.nio.channels.*;
import?java.util.Properties;

public?class?MavenWrapperDownloader?{

????private?static?final?String?WRAPPER_VERSION?=?“0.5.6“;
????/**
?????*?Default?URL?to?download?the?maven-wrapper.jar?from?if?no?‘downloadUrl‘?is?provided.
?????*/
????private?static?final?String?DEFAULT_DOWNLOAD_URL?=?“https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/“
????????????+?WRAPPER_VERSION?+?“/maven-wrapper-“?+?WRAPPER_VERSION?+?“.jar“;

????/**
?????*?Path?to?the?maven-wrapper.properties?file?which?might?contain?a?downloadUrl?property?to
?????*?use?instead?of?the?default?one.
?????*/
????private?static?final?String?MAVEN_WRAPPER_PROPERTIES_PATH?=
????????????“.mvn/wrapper/maven-wrapper.properties“;

????/**
?????*?Path?where?the?maven-wrapper.jar?will?be?saved?to.
?????*/
????private?static?final?String?MAVEN_WRAPPER_JAR_PATH?=
????????????“.mvn/wrapper/maven-wrapper.jar“;

????/**
?????*?Name?of?the?property?which?should?be?used?to?override?the?default?download?url?for?the?wrapper.
?????*/
????private?static?final?String?PROPERTY_NAME_WRAPPER_URL?=?“wrapperUrl“;

????public?static?void?main（String?args[]）?{
????????System.out.println（“-?Downloader?started“）;
????????File?baseDirectory?=?new?File（args[0]）;
????????System.out.println（“-?Using?base?directory:?“?+?baseDirectory.getAbsolutePath（））;

????????//?If?the?maven-wrapper.properties?exists?read?it?and?check?if?it?contains?a?custom
????????//?wrapperUrl?parameter.
????????File?mavenWrapperPropertyFile?=?new?File（baseDirectory?MAVEN_WRAPPER_PROPERTIES_PATH）;
????????String?url?=?DEFAULT_DOWNLOAD_URL;
????????if?（mavenWrapperPropertyFile.exists（））?{
????????????FileInputStream?mavenWrapperPropertyFileInputStream?=?null;
????????????try?{
????????????????mavenWrapperPropertyFileInputStream?=?new?FileInputStream（mavenWrapperPropertyFile）;
????????????????Properties?mavenWrapperProperties?=?new?Properties（）;
????????????????mavenWrapperProperties.load（mavenWrapperPropertyFileInputStream）;
????????????????url?=?mavenWrapperProperties.getProperty（PROPERTY_NAME_WRAPPER_URL?url）;
????????????}?catch?（IOException?e）?{
????????????????System.out.println（“-?ERROR?loading?‘“?+?MAVEN_WRAPPER_PROPERTIES_PATH?+?“‘“）;
????????????}?finally?{
????????????????try?{
????????????????????if?（mavenWrapperPropertyFileInputStream?!=?null）?{
?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2020-09-14?21:41??ems_vue\
?????目錄???????????0??2020-10-21?11:24??ems_vue\.idea\
?????文件?????????184??2020-09-12?14:43??ems_vue\.idea\.gitignore
?????文件?????????876??2020-09-13?20:36??ems_vue\.idea\compiler.xml
?????目錄???????????0??2020-09-21?22:22??ems_vue\.idea\dataSources\
?????文件?????????977??2020-09-16?19:33??ems_vue\.idea\dataSources.local.xml
?????文件?????????592??2020-09-16?19:28??ems_vue\.idea\dataSources.xml
?????目錄???????????0??2020-09-16?19:28??ems_vue\.idea\dataSources\305626a1-32a1-42fe-a99f-aaf4ba807da2\
?????文件???????30110??2020-09-21?22:22??ems_vue\.idea\dataSources\305626a1-32a1-42fe-a99f-aaf4ba807da2.xml
?????目錄???????????0??2020-09-16?19:28??ems_vue\.idea\dataSources\305626a1-32a1-42fe-a99f-aaf4ba807da2\storage_v2\
?????目錄???????????0??2020-09-16?19:28??ems_vue\.idea\dataSources\305626a1-32a1-42fe-a99f-aaf4ba807da2\storage_v2\_src_\
?????目錄???????????0??2020-09-16?19:28??ems_vue\.idea\dataSources\305626a1-32a1-42fe-a99f-aaf4ba807da2\storage_v2\_src_\schema\
?????文件??????????76??2020-09-16?19:28??ems_vue\.idea\dataSources\305626a1-32a1-42fe-a99f-aaf4ba807da2\storage_v2\_src_\schema\information_schema.FNRwLQ.meta
?????文件?????????191??2020-09-12?14:46??ems_vue\.idea\encodings.xml
?????文件?????????864??2020-09-12?14:46??ems_vue\.idea\jarRepositories.xml
?????目錄???????????0??2020-09-14?21:41??ems_vue\.idea\libraries\
?????文件?????????568??2020-09-12?14:46??ems_vue\.idea\libraries\Maven__ch_qos_logback_logback_classic_1_2_3.xml
?????文件?????????547??2020-09-12?14:46??ems_vue\.idea\libraries\Maven__ch_qos_logback_logback_core_1_2_3.xml
?????文件?????????591??2020-09-12?14:54??ems_vue\.idea\libraries\Maven__commons_fileupload_commons_fileupload_1_4.xml
?????文件?????????503??2020-09-12?14:54??ems_vue\.idea\libraries\Maven__commons_io_commons_io_2_2.xml
?????文件?????????493??2020-09-12?14:54??ems_vue\.idea\libraries\Maven__com_alibaba_druid_1_1_19.xml
?????文件?????????651??2020-09-14?21:41??ems_vue\.idea\libraries\Maven__com_fasterxml_jackson_core_jackson_annotations_2_11_2.xml
?????文件?????????602??2020-09-14?21:41??ems_vue\.idea\libraries\Maven__com_fasterxml_jackson_core_jackson_core_2_11_2.xml
?????文件?????????630??2020-09-14?21:41??ems_vue\.idea\libraries\Maven__com_fasterxml_jackson_core_jackson_databind_2_11_2.xml
?????文件?????????681??2020-09-14?21:41??ems_vue\.idea\libraries\Maven__com_fasterxml_jackson_datatype_jackson_datatype_jdk8_2_11_2.xml
?????文件?????????695??2020-09-14?21:41??ems_vue\.idea\libraries\Maven__com_fasterxml_jackson_datatype_jackson_datatype_jsr310_2_11_2.xml
?????文件?????????736??2020-09-14?21:41??ems_vue\.idea\libraries\Maven__com_fasterxml_jackson_module_jackson_module_parameter_names_2_11_2.xml
?????文件?????????546??2020-09-12?14:46??ems_vue\.idea\libraries\Maven__com_jayway_jsonpath_json_path_2_4_0.xml
?????文件?????????700??2020-09-12?14:46??ems_vue\.idea\libraries\Maven__com_vaadin_external_google_android_json_0_0_20131108_vaadin1.xml
?????文件?????????503??2020-09-14?21:41??ems_vue\.idea\libraries\Maven__com_zaxxer_HikariCP_3_4_5.xml
?????文件?????????633??2020-09-12?14:46??ems_vue\.idea\libraries\Maven__jakarta_activation_jakarta_activation_api_1_2_2.xml
............此處省略219個文件信息