如何在java项目中构建和创建./parking_lot文件

Question

请看一下这个git回购：

https://github.com/rohitdang/ParkingLot

在根文件夹中，有一个名为"parking_lot“的名称。要运行这个文件，我所要做的就是输入终端：

./parking_lot <inputFile.path>

我希望创建一个类似的文件来执行maven项目，以便在根文件夹中以类似的方式运行我的项目。我使用的是java-11和IntelliJ的想法。

请帮帮我。谢谢。

Answer 1

parking_lot (https://github.com/rohitdang/ParkingLot/blob/master/parking_lot)是以以下内容开头的文件：

#!/bin/sh
MYSELF=`which "$0" 2>/dev/null`
[ $? -gt 0 -a -f "$0" ] && MYSELF="./$0"
java=java
if test -n "$JAVA_HOME"; then
    java="$JAVA_HOME/bin/java"
fi
java_args=-Xmx1g
exec "$java" $java_args -jar $MYSELF "$@"
exit 1 
PK^C^D

这是一个有效的shell脚本，重新启动java -jar本身。这将有效，因为parking_lot也是一个有效的jar文件，如

ravn@freewifi Downloads % jar tvf parking_lot
     0 Wed Oct 18 01:29:26 CEST 2017 META-INF/
   183 Wed Oct 18 01:29:24 CEST 2017 META-INF/MANIFEST.MF
     0 Wed Oct 18 01:29:24 CEST 2017 com/
     0 Wed Oct 18 01:29:24 CEST 2017 com/gojek/
     0 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/
     0 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/
     0 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/Exception/
     0 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/inputargconfigfactory/
     0 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/parkinglotfactory/
   720 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/Exception/InternalServerErrorException.class
   687 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/Exception/NotFoundException.class
  1680 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/inputargconfigfactory/FileParser.class
   988 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/inputargconfigfactory/InputArgumentConfigFactory.class
  1629 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/inputargconfigfactory/InputArgumentParser.class
   921 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/inputargconfigfactory/ParkingLotConfig.class
   809 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/ParkingLot.class
   898 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/parkinglotfactory/Car.class
  1877 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/parkinglotfactory/CreateParkingLot.class
  1942 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/parkinglotfactory/Leave.class
  2303 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/parkinglotfactory/Park.class
  1774 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/parkinglotfactory/ParkingLotConfigFactory.class
  2519 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/parkinglotfactory/RegistrationNumberForCarWithColours.class
  2986 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/parkinglotfactory/SlotNumberForCarWithColours.class
  3043 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/parkinglotfactory/SlotNumberForCarWithRegistrationNumber.class
  1998 Wed Oct 18 01:29:24 CEST 2017 com/gojek/parkinglot/ParkingLot/parkinglotfactory/Status.class
    60 Wed Oct 18 01:29:22 CEST 2017 file_input_invalid.txt
   418 Wed Oct 18 01:29:22 CEST 2017 file_inputs_valid.txt
   397 Wed Oct 18 01:29:22 CEST 2017 file_inputs_without_creating_parking_lot.txt
     0 Wed Oct 18 01:29:26 CEST 2017 META-INF/maven/
     0 Wed Oct 18 01:29:26 CEST 2017 META-INF/maven/com.gojek.parkinglot/
     0 Wed Oct 18 01:29:26 CEST 2017 META-INF/maven/com.gojek.parkinglot/ParkingLot/
  1666 Wed Oct 18 01:24:22 CEST 2017 META-INF/maven/com.gojek.parkinglot/ParkingLot/pom.xml
   124 Wed Oct 18 01:29:24 CEST 2017 META-INF/maven/com.gojek.parkinglot/ParkingLot/pom.properties

(这是可能的，因为jar文件是zip文件，它们是从文件末尾读取的。紧跟在PK之后的exit 1是压缩头的第一位)

我猜想该文件是通过将shell脚本与Maven生成的jar文件连接起来创建的。为此使用cat命令。