文件不删除

Question

正在尝试删除以名称TRTHIndicative_开头的文件夹中的特定文件。

但是文件没有删除，正在使用下面的代码

testMethod(inputDir);
testMethod(outputFile);


private static void testMethod(String dirName){
    File directory = new File(dirName);

    // Get all files in directory
    File[] files = directory.listFiles();
    for (File file : files) {

        if (file.getName().startsWith("Indicative_")) {
            // Delete each file
            if(file.exists()){
                System.out.println("File is there!");
            }
            if (file.delete()) {
                // Failed to delete file
                System.out.println("Failed to delete " + file);
            } else {
                System.out.println("Deleted file succsfully");
            }
        }

    }

请检查一下，如果有什么问题请告诉我。

Answer 1

我认为您试图删除的文件中有权限错误。埃托罗的回答对我也很好。尝试给予每个用户如何更改windows中的文件权限读/写权限

Answer 2

您的if和else混淆了--如果文件已成功删除，File#delete()将返回true。因此，这种情况应予以扭转：

if (file.delete()) {
    System.out.println("Deleted file succesfully");
} else {
    // Failed to delete file
    System.out.println("Failed to delete " + file);
}

Answer 3

莫里尼克是对的。我刚试过你的密码。效果很好。只需按以下方式进行更改：

public class Main {

public static void main(String[] args) {
    File directory = new File("C:/temp");
    File[] files = directory.listFiles();
    for (File file : files) {

        if (file.getName().toLowerCase().startsWith("blub")) {
            // Delete each file
            if (file.exists()) {
                System.out.println("File is there!");
            }
            if (file.delete()) {
                System.out.println("Deleted file succsfully");
            } else {
                // Failed to delete file
                System.out.println("Failed to delete " + file);
            }
        }
    }
}

}

注意我添加的toLowerCase()。它将使您的代码片段更易于使用。