1、利用System.getProperty()函数获取当前路径:
System.out.println(System.getProperty("user.dir"))//user.dir指定了当前的路径
2、使用File提供的函数获取当前路径:
File directory = new File("")//设定为当前文件夹 try{ System.out.println(directory.getCanonicalPath())//获取标准的路径 System.out.println(directory.getAbsolutePath())//获取绝对路径 }catch(Exceptin e){} File.getCanonicalPath()和File.getAbsolutePath()大约只是对于new File(".")和new File("..")两种路径有所区别。 # 对于getCanonicalPath()函数,“."就表示当前的文件夹,而”..“则表示当前文件夹的上一级文件夹 # 对于getAbsolutePath()函数,则不管”.”、“..”,返回当前的路径加上你在new File()时设定的路径 # 至于getPath()函数,得到的只是你在new File()时设定的路径 比如当前的路径为 C:/test : File directory = new File("abc") directory.getCanonicalPath() //得到的是C:/test/abc directory.getAbsolutePath() //得到的是C:/test/abc direcotry.getPath() //得到的是abc File directory = new File(".") directory.getCanonicalPath() //得到的是C:/test directory.getAbsolutePath() //得到的是C:/test/. direcotry.getPath() //得到的是. File directory = new File("..") directory.getCanonicalPath() //得到的是C:/ directory.getAbsolutePath() //得到的是C:/test/.. direcotry.getPath() //得到的是.. 另外:System.getProperty()中的字符串参数如下: System.getProperty()参数大全 # java.version Java Runtime Environment version # java.vendor Java Runtime Environment vendor # java.vendor.url Java vendor URL # java.home Java installation directory # java.vm.specification.version Java Virtual Machine specification version # java.vm.specification.vendor Java Virtual Machine specification vendor # java.vm.specification.name Java Virtual Machine specification name # java.vm.version Java Virtual Machine implementation version # java.vm.vendor Java Virtual Machine implementation vendor # java.vm.name Java Virtual Machine implementation name # java.specification.version Java Runtime Environment specification version # java.specification.vendor Java Runtime Environment specification vendor # java.specification.name Java Runtime Environment specification name # java.class.version Java class format version number # java.class.path Java class path # java.library.path List of paths to search when loading libraries # java.io.tmpdir Default temp file path # java.compiler Name of JIT compiler to use # java.ext.dirs Path of extension directory or directories # os.name Operating system name # os.arch Operating system architecture # os.version Operating system version # file.separator File separator ("/" on UNIX) # path.separator Path separator (":" on UNIX) # line.separator Line separator ("/n" on UNIX) # user.name User’s account name # user.home User’s home directory # user.dir User’s current working directory
JAVA中获取路径 关键字: java中获取路径
1、jsp中取得路径:
以工程名为TEST为例:
(1)得到包含工程名的当前页面全路径:request.getRequestURI() 结果:/TEST/test.jsp (2)得到工程名:request.getContextPath() 结果:/TEST (3)得到当前页面所在目录下全名称:request.getServletPath() 结果:如果页面在jsp目录下 /TEST/jsp/test.jsp (4)得到页面所在服务器的全路径:application.getRealPath("页面.jsp") 结果:D:/resin/webapps/TEST/test.jsp (5)得到页面所在服务器的绝对路径:absPath=new java.io.File(application.getRealPath(request.getRequestURI())).getParent() 结果:D:/resin/webapps/TEST
2、在类中取得路径: (1)类的绝对路径:Class.class.getClass().getResource("/").getPath() 结果:/D:/TEST/WebRoot/WEB-INF/classes/pack/ (2)得到工程的路径:System.getProperty("user.dir") 结果:D:/TEST
public File getFile(){
final JFileChooser fc = new JFileChooser()
fc setFileSelectionMode(JFileChooser FILES_AND_DIRECTORIES)
// JFileChooser FILES_ONLY
// JFileChooser DIRECTORIES_ONLY
int returnVal = fc showOpenDialog(this)
File file_choosed = fc getSelectedFile()
return file_choosed
lishixinzhi/Article/program/Java/hx/201311/27130
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