我要做的就是加载我保存到纯文本文件中的关于JInternalFrame位置的信息,并将框架设置为它保存的状态。出于某种原因,我无法将捕获组与字符串进行比较;也就是说,matcher.group("state")
与应该是 ( "min"
, "max"
, or "normal"
) 的字符串相比,它没有返回 true,同样如此matcher.group("vis")
。
String fileArrayStr = "WINDOW_LAYOUT:0,0|779x768|max|show"
我的代码是:
byte[] fileArray = null;
String fileArrayStr = null;
try {
fileArray = Files.readAllBytes(PathToConfig);
} catch (IOException e) {
e.printStackTrace();
}
try {
fileArrayStr = new String(fileArray, "UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
// checking the value of fileArrayStr here by outputting it
// confirms the data is read correctly from the file
pattern = Pattern.compile(
"WINDOW_LAYOUT:\\s*" +
"(?<x>[0-9\\-]+),(?<y>[0-9\\-]+)\\|" +
"(?<length>\\d+)x(?<height>\\d+)\\|" +
"(?<state>[minaxorl]+)\\|" +
"(?<vis>[showide]+)\\s*");
matcher = pattern.matcher(fileArrayStr);
if (matcher.find()) {
frame.setLocation(Integer.parseInt(matcher.group("x")),
Integer.parseInt(matcher.group("y")));
frame.setSize(Integer.parseInt(matcher.group("length")),
Integer.parseInt(matcher.group("height")));
DialogMsg("state: " + matcher.group("state") + "\n" + "vis: "
+ matcher.group("vis"));
// the above DialogMsg call (my own function to show a popup dialog)
// shows the
// data is being read correctly, as the values are "max" and "show"
// for state
// and vis, respectively. Same with the DialogMsg calls below.
if (matcher.group("state") == "min") {
try {
frame.setIcon(true);
} catch (PropertyVetoException e) {
e.printStackTrace();
}
} else if (matcher.group("state") == "max") {
try {
frame.setMaximum(true);
} catch (PropertyVetoException e) {
e.printStackTrace();
}
} else {
DialogMsg("matcher.group(\"state\") = \""
+ matcher.group("state") + "\"");
}
if (matcher.group("vis") == "show") {
frame.setVisible(true);
} else if (matcher.group("vis") == "hide") {
frame.setVisible(false);
} else {
DialogMsg("matcher.group(\"vis\") = \"" + matcher.group("vis")
+ "\"");
}
}
代码总是回退到else
语句。我究竟做错了什么?matcher.group应该返回一个字符串,不是吗?