英文:
Java FileWriter. How do you create a folder in the same directory as your .exe file?
问题
public void saveFile() {try {try (BufferedWriter save = new BufferedWriter(new FileWriter("Lessons\\" + tempTextField.getText() + ".txt"))) {save.write(lessonPane.getText());JOptionPane.showMessageDialog(null, "File Saved!");}} catch (IOException e) {JOptionPane.showMessageDialog(null, e);}}
这是您目前的代码，目前它运行得很好。但要使其工作，您必须在项目目录中创建一个名为"Lessons"的文件夹，否则它会报告找不到位置的错误。
问题在于，我想为这个项目制作一个.exe文件和安装程序（因为这是学校项目的要求）。在构建项目并使用L4J创建.exe文件以及使用ISC创建安装程序后，它会报告目标位置（即文件夹"Lessons"）无效/丢失的错误。
在尝试解决这个问题后，我认为它不再工作的原因是，我的.jar文件、.exe文件和JRE位于"dist"文件夹中（在我清理和构建项目以获取.jar文件后生成），而文件夹"Lessons"位于根目录中。
如何使文件夹在与.jar或.exe相同的位置自动生成，我不确定是否可能。是否有其他解决这个问题的方法？
非常感谢！
英文:
public void saveFile() {try {try (BufferedWriter save = new BufferedWriter (new FileWriter("Lessons\\" + tempTextField.getText() + ".txt"))) { // creates the filesave.write(lessonPane.getText()); // saves the contents of the text pane into fileJOptionPane.showMessageDialog(null, "File Saved!");}} catch (IOException e) {JOptionPane.showMessageDialog(null, e);}
this is what I currently have, and right now it's working just fine. But for this to work, I have to create a folder in the project directory or else it will throw me an error, saying the location is missing.
the problem is that I want to make an .exe file and installer for this project (because its a project requirement in school). And after I build, and make .exe using L4J, and installer using ISC, it will throw me an error saying that the target location (aka. the folder "Lessons") is invalid / missing.
after trying to solve it, I think the reason that its no longer working is because, my .jar .exe. and the JRE are in the folder "dist" (generated after I clean and build the project to get the .jar file) while the folder "Lessons" is on the root folder.
How can I make it that the folder will be automatically generated on the same location as the .jar or .exe. Honestly, I dont even know if that's possible. And is there any other way to work around this problem?
Thanks a lot!
答案1
得分: 0
public void saveFile() {
File fdir = new File("Lessons");
if (!fdir.exists()) {
if (fdir.mkdirs()) {
System.out.println("directory created");
} else {
System.out.println("folder creation failed");
}
} else {
System.out.println("directory already exists");
}
try {try (BufferedWriter save = new BufferedWriter(new FileWriter("Lessons\\" + tempTextField.getText() + ".txt"))) {save.write(lessonPane.getText());JOptionPane.showMessageDialog(null, "File Saved!");}} catch (IOException e) {JOptionPane.showMessageDialog(null, e);}
}
This is just silly, I just removed the slashes from the File and it worked. I don't know how or why it worked. But it worked.
英文:
public void saveFile() {File fdir = new File("Lessons");if (!fdir.exists()) {if(fdir.mkdirs()){System.out.println("directory created");} else {System.out.println("folder creation failed");}} else {System.out.println("directory already exists");}try {try (BufferedWriter save = new BufferedWriter (new FileWriter("Lessons\\" + tempTextField.getText() + ".txt"))) { // creates the filesave.write(lessonPane.getText()); // saves the contentsJOptionPane.showMessageDialog(null, "File Saved!");}} catch (IOException e) {JOptionPane.showMessageDialog(null, e);}
this is just silly, I just removed the slashes from the File and it worked. I dont know how or why did it worked. But it worked.
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