Java JFileChooser.showSaveDialog(...) - 如何设置建议的文件名
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/356671/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
JFileChooser.showSaveDialog(...) - how to set suggested file name
提问by yanchenko
The JFileChooserseems to be missing afeature: a way to suggest the file name when saving a file (the thing that usually gets selected so that it would get replaced when user starts typing).
在JFileChooser似乎缺少该FEATURE：一种方式保存文件（通常被选中，这样，当用户开始输入将被替换的东西）时，建议的文件名。
Is there a way around this?
有没有解决的办法？
采纳答案by bruno conde
If I understand you correctly, you need to use the setSelectedFilemethod.
如果我理解正确，您需要使用该setSelectedFile方法。
JFileChooser jFileChooser = new JFileChooser();
jFileChooser.setSelectedFile(new File("fileToSave.txt"));
jFileChooser.showSaveDialog(parent);
The file doesn't need to exist.
该文件不需要存在。
EDIT:If you pass a File with an absolute path, JFileChooserwill try to position itself in that directory (if it exists).
编辑：如果您传递带有绝对路径的文件，JFileChooser将尝试将自身定位在该目录中（如果存在）。
回答by Aaron Digulla
If that doesn't work, here is a workaround:
如果这不起作用，这里有一个解决方法：
dialog.getUI().setFileName( name )
But you should check whether the selection mode is FILES_ONLYor FILES_AND_DIRECTORIES. If it's DIRECTORIES_ONLY, then setSelectedFile()will strip the file name.
但是您应该检查选择模式是否为FILES_ONLY或FILES_AND_DIRECTORIES。如果是DIRECTORIES_ONLY，setSelectedFile()则将删除文件名。
回答by Erik Martino
setSelectedFile doesn't work with directories as mentioned above, a solution is
setSelectedFile 不适用于上述目录，解决方案是
try {
FileChooserUI fcUi = fileChooser.getUI();
fcUi.setSelectedFile(defaultDir);
Class<? extends FileChooserUI> fcClass = fcUi.getClass();
Method setFileName = fcClass.getMethod("setFileName", String.class);
setFileName.invoke(fcUi, defaultDir.getName());
} catch (Exception e) {
e.printStackTrace();
}
Unfortunately the setFileName is not included in the UI interface, thus the need to call it dynamically. Only tested on mac.
不幸的是 setFileName 没有包含在 UI 界面中，因此需要动态调用它。仅在 mac 上测试。
