找到正确的道路 [英] Finding the right Path

问题描述

我想使用 Apache PDFBox 生成PDF，并将其放在docs/file1.pdf下.文件夹docs已经创建，但是我不知道如何从Java访问该文件夹.

I want to generate a PDF with Apache PDFBox and put it under docs/file1.pdf. The folder docs is already created, but I don't know how to access it from Java.

我的项目结构如下:

• build
• nbprojects
• docs

• src<-这是生成的文件所属的地方

• build
• nbprojects
• docs

• src <-- this is where the generated files belong

• java
  • generator
    • generator.java<-这是生成文件的地方
    • java
      • generator
        • generator.java <-- this is where the files are being generated

        [其他一些文件夹]

        [some other folders]

        当我尝试时:

        System.getProperty("user.dir");
        

        我得到了(我在Linux上):

        I get (I'm on Linux):

        /home/user1/.netbeans/9.0/config/GF_5.0/domain1/config
        

        我的猜测上升了3个级别:

        My guess was going 3 levels up:

        ../../../docs/file1.pdf
        

        但它说

        java.io.FileNotFoundException:找不到../../../docs/file1.pdf

        java.io.FileNotFoundException: ../../../docs/file1.pdf was not found

        问题:如何从src/java/generator/generator.java访问docs?

        推荐答案

        一种方法是使用绝对路径.或者，您可以使用此打印语句根据您的Java程序来了解当前目录，

        One way is to use absolute path. Or you can use this print statement to know your current directory as per your java program,

        System.out.println("Current Dir: " + new File(".").getAbsolutePath());
        

        它将打印类似的内容，

        \pkr\work7\ws\test\.
        

        一旦您知道该路径，就可以通过放置..来正确构建路径，并能够正确读取文件.

        Once you know this path, you can build your path correctly by putting .. and be able to correctly read your file.

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