如何在Java（IDE）中找到当前项目目录的路径？

path eclipse java

2022-08-31 13:14:25

我试图在Java中以编程方式找到当前正在运行/调试的项目的路径，我在Google中查找，我发现的是，这并没有让我获得项目的路径。System.getProperty("user.id")

我知道C#中的命令给出了当前正在运行/调试的项目的路径，所以我确信Java中也必须有类似的方式。Environment.currentDirectory

所以我在问是否有人可以告诉我或给我一个代码，以编程方式找到当前正在运行/调试的项目的路径？

编辑：我正在编写加载日食开始的插件。该插件在eclipse的工作台上添加了一个按钮，当我单击该按钮时，我在插件的代码中搜索当前目录路径。

我的目的是，例如，当我调试一个项目，然后单击按钮时，将弹出一个窗口，显示调试项目的路径，谢谢

答案 1

两种方式

System.getProperty("user.dir");

或者这个

File currentDirFile = new File(".");
String helper = currentDirFile.getAbsolutePath();
String currentDir = helper.substring(0, helper.length() - currentDirFile.getCanonicalPath().length());//this line may need a try-catch block

这个想法是获取带有“.”的当前文件夹，然后获取它的绝对位置并从中删除文件名，因此从类似

/home/shark/eclipse/workspace/project/src/com/package/name/bin/Class.class

当你删除类.class你会得到

/home/shark/eclipse/workspace/project/src/com/package/name/bin/

这有点像你想要的。

答案 2

使用键通过 java 获取项目位置。user.dir

法典：

System.out.println("Present Project Directory : "+ System.getProperty("user.dir"));

输出：

Present Project Directory :C:\workspace\MyEclipse 10\examples\MySqlMavenDomain

要显示所有系统属性，只需使用System.getProperties();

使用中的值获取输出。KeySystem.getProperty("java.version");

法典：

Properties properties = System.getProperties();
Enumeration<Object> enumeration = properties.keys();
for (int i = 0; i < properties.size(); i++) {
    Object obj = enumeration.nextElement();
    System.out.println("Key: "+obj+"\tOutPut= "+System.getProperty(obj.toString()));
}

输出：

Key: java.runtime.name  OutPut= Java(TM) SE Runtime Environment
Key: sun.boot.library.path  OutPut= C:\Program Files\Java\jdk1.7.0_45\jre\bin
Key: java.vm.version    OutPut= 24.45-b08
Key: java.vm.vendor OutPut= Oracle Corporation
Key: java.vendor.url    OutPut= http://java.oracle.com/
Key: path.separator OutPut= ;
Key: java.vm.name   OutPut= Java HotSpot(TM) Client VM
Key: file.encoding.pkg  OutPut= sun.io
Key: user.country   OutPut= US
Key: user.script    OutPut= 
Key: sun.java.launcher  OutPut= SUN_STANDARD
Key: sun.os.patch.level OutPut= Service Pack 3
Key: java.vm.specification.name OutPut= Java Virtual Machine Specification
Key: user.dir   OutPut= C:\workspace\MyEclipse 10\examples\MySqlMavenDomain
Key: java.runtime.version   OutPut= 1.7.0_45-b18
Key: java.awt.graphicsenv   OutPut= sun.awt.Win32GraphicsEnvironment
Key: java.endorsed.dirs OutPut= C:\Program Files\Java\jdk1.7.0_45\jre\lib\endorsed
Key: os.arch    OutPut= x86
Key: java.io.tmpdir OutPut= C:\DOCUME~1\UDAYP~2.PBS\LOCALS~1\Temp\
Key: line.separator OutPut= 

Key: java.vm.specification.vendor   OutPut= Oracle Corporation
Key: user.variant   OutPut= 
Key: os.name    OutPut= Windows XP
Key: sun.jnu.encoding   OutPut= Cp1252
Key: java.library.path  OutPut= C:\Program Files\Java\jdk1.7.0_45\bin;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:/Program Files/MyEclipse/Common/binary/com.sun.java.jdk.win32.x86_1.6.0.013/jre/bin/client;C:/Program Files/MyEclipse/Common/binary/com.sun.java.jdk.win32.x86_1.6.0.013/jre/bin;C:/Program Files/MyEclipse/Common/binary/com.sun.java.jdk.win32.x86_1.6.0.013/jre/lib/i386;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\system32\WindowsPowerShell\v1.0;D:\Program Files\Microsoft SQL Server\100\Tools\Binn\VSShell\Common7\IDE\;D:\Program Files\Microsoft SQL Server\100\Tools\Binn\;D:\Program Files\Microsoft SQL Server\100\DTS\Binn\;.
Key: java.specification.name    OutPut= Java Platform API Specification
Key: java.class.version OutPut= 51.0
Key: sun.management.compiler    OutPut= HotSpot Client Compiler
Key: os.version OutPut= 5.1
Key: user.home  OutPut= C:\Documents and Settings\uday.p.PBSYSTEMS
Key: user.timezone  OutPut= 
Key: java.awt.printerjob    OutPut= sun.awt.windows.WPrinterJob
Key: file.encoding  OutPut= UTF-8
Key: java.specification.version OutPut= 1.7
Key: java.class.path    OutPut= C:\workspace\MyEclipse 10\examples\MySqlMavenDomain\target\test-classes;C:\workspace\MyEclipse 10\examples\MySqlMavenDomain\target\classes;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\jstl\jstl\1.2\jstl-1.2.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\javax\servlet\javax.servlet-api\3.1.0\javax.servlet-api-3.1.0.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\mysql\mysql-connector-java\5.1.28\mysql-connector-java-5.1.28.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\javax\mail\mail\1.4.7\mail-1.4.7.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\javax\activation\activation\1.1\activation-1.1.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\junit\junit\4.11\junit-4.11.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\hamcrest\hamcrest-core\1.3\hamcrest-core-1.3.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\hibernate\hibernate-core\4.3.0.Final\hibernate-core-4.3.0.Final.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\jboss\logging\jboss-logging\3.1.3.GA\jboss-logging-3.1.3.GA.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\jboss\logging\jboss-logging-annotations\1.2.0.Beta1\jboss-logging-annotations-1.2.0.Beta1.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\jboss\spec\javax\transaction\jboss-transaction-api_1.2_spec\1.0.0.Final\jboss-transaction-api_1.2_spec-1.0.0.Final.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\dom4j\dom4j\1.6.1\dom4j-1.6.1.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\xml-apis\xml-apis\1.0.b2\xml-apis-1.0.b2.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\hibernate\common\hibernate-commons-annotations\4.0.4.Final\hibernate-commons-annotations-4.0.4.Final.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\hibernate\javax\persistence\hibernate-jpa-2.1-api\1.0.0.Final\hibernate-jpa-2.1-api-1.0.0.Final.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\javassist\javassist\3.18.1-GA\javassist-3.18.1-GA.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\antlr\antlr\2.7.7\antlr-2.7.7.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\jboss\jandex\1.1.0.Final\jandex-1.1.0.Final.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\hibernate\hibernate-entitymanager\4.3.0.Final\hibernate-entitymanager-4.3.0.Final.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\commons-dbcp\commons-dbcp\1.4\commons-dbcp-1.4.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\commons-fileupload\commons-fileupload\1.3\commons-fileupload-1.3.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\commons-net\commons-net\3.3\commons-net-3.3.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\commons-codec\commons-codec\1.9\commons-codec-1.9.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\commons-pool\commons-pool\1.6\commons-pool-1.6.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\commons-collections\commons-collections\3.2.1\commons-collections-3.2.1.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\commons-beanutils\commons-beanutils\1.9.0\commons-beanutils-1.9.0.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\log4j\log4j\1.2.16\log4j-1.2.16.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\springframework\spring-orm\3.2.6.RELEASE\spring-orm-3.2.6.RELEASE.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\aopalliance\aopalliance\1.0\aopalliance-1.0.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\springframework\spring-jdbc\3.2.6.RELEASE\spring-jdbc-3.2.6.RELEASE.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\springframework\spring-tx\3.2.6.RELEASE\spring-tx-3.2.6.RELEASE.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\springframework\spring-web\3.2.6.RELEASE\spring-web-3.2.6.RELEASE.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\springframework\spring-aop\3.2.6.RELEASE\spring-aop-3.2.6.RELEASE.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\springframework\spring-webmvc\3.2.6.RELEASE\spring-webmvc-3.2.6.RELEASE.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\springframework\spring-aspects\3.2.6.RELEASE\spring-aspects-3.2.6.RELEASE.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\aspectj\aspectjweaver\1.7.2\aspectjweaver-1.7.2.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\springframework\spring-beans\3.2.6.RELEASE\spring-beans-3.2.6.RELEASE.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\springframework\spring-context\3.2.6.RELEASE\spring-context-3.2.6.RELEASE.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\springframework\spring-context-support\3.2.6.RELEASE\spring-context-support-3.2.6.RELEASE.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\springframework\spring-core\3.2.6.RELEASE\spring-core-3.2.6.RELEASE.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\springframework\spring-expression\3.2.6.RELEASE\spring-expression-3.2.6.RELEASE.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\springframework\spring-instrument\3.2.6.RELEASE\spring-instrument-3.2.6.RELEASE.jar;C:\Documents and Settings\uday.p.PBSYSTEMS\.m2\repository\org\springframework\spring-instrument-tomcat\3.2.6.RELEASE\spring-instrument-tomcat-3.2.6.RELEASE.jar
Key: user.name  OutPut= uday.p
Key: java.vm.specification.version  OutPut= 1.7
Key: sun.java.command   OutPut= com.uk.mysqlmaven.domain.test.UserLoginDetails
Key: java.home  OutPut= C:\Program Files\Java\jdk1.7.0_45\jre
Key: sun.arch.data.model    OutPut= 32
Key: user.language  OutPut= en
Key: java.specification.vendor  OutPut= Oracle Corporation
Key: awt.toolkit    OutPut= sun.awt.windows.WToolkit
Key: java.vm.info   OutPut= mixed mode, sharing
Key: java.version   OutPut= 1.7.0_45
Key: java.ext.dirs  OutPut= C:\Program Files\Java\jdk1.7.0_45\jre\lib\ext;C:\WINDOWS\Sun\Java\lib\ext
Key: sun.boot.class.path    OutPut= C:\Program Files\Java\jdk1.7.0_45\jre\lib\resources.jar;C:\Program Files\Java\jdk1.7.0_45\jre\lib\rt.jar;C:\Program Files\Java\jdk1.7.0_45\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.7.0_45\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.7.0_45\jre\lib\jce.jar;C:\Program Files\Java\jdk1.7.0_45\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.7.0_45\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.7.0_45\jre\classes
Key: java.vendor    OutPut= Oracle Corporation
Key: file.separator OutPut= \
Key: java.vendor.url.bug    OutPut= http://bugreport.sun.com/bugreport/
Key: sun.io.unicode.encoding    OutPut= UnicodeLittle
Key: sun.cpu.endian OutPut= little
Key: sun.desktop    OutPut= windows
Key: sun.cpu.isalist    OutPut= pentium_pro+mmx pentium_pro pentium+mmx pentium i486 i386 i86

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