从JavaScript转义的Unicode转换为Java Unicode [英] Conversion from javascript-escaped Unicode to Java Unicode
问题描述
我有一个通过HTTP请求传递的查询字符串,其中包含此字符:
%u54E6
我想生成一个包含实际汉字的字符串,所以我可以在应用程序的不同部分使用它,我试过使用这个代码:
String foo =%u54E6;
String ufoo = new String(foo.replaceAll(%u([a-zA-Z0-9] {4}),\\+u $ 1));
System.out.println(ufoo:+ ufoo);
不幸的是,我所获得的是'u54E6'打印到控制台的值,而不是中文字符。
有没有一种简单的方式将原始字符串转换为Java中的Unicode字符?
您正在尝试在运行时使用 \u
转义。这些只是编译时间。相反,您应该可以执行以下操作:
String foo =%u54E6;
模式p = Pattern.compile(%u([a-zA-Z0-9] {4}));
Matcher m = p.matcher(foo);
StringBuffer sb = new StringBuffer();
while(m.find()){
m.appendReplacement(sb,
String.valueOf((char)Integer.parseInt(m.group(1),16)));
}
m.appendTail(sb);
System.out.println(sb.toString());
I have a query string passed in through an HTTP request that has this character in it:
%u54E6
And I'd like to generate a string that contains the actual Chinese character so I can use it in a different part of the application, I've tried using this code:
String foo = "%u54E6";
String ufoo = new String(foo.replaceAll("%u([a-zA-Z0-9]{4})", "\\" + "u$1"));
System.out.println("ufoo: " + ufoo);
Unfortunately, all I'm getting is 'u54E6' printed to the console for the value, instead of the Chinese character.
Is there an easy way to convert the original string to a Unicode character in Java?
You're trying to use \u
escapes at run time. These are compile-time only. Instead, you should be able to do something like:
String foo = "%u54E6";
Pattern p = Pattern.compile("%u([a-zA-Z0-9]{4})");
Matcher m = p.matcher(foo);
StringBuffer sb = new StringBuffer();
while (m.find()) {
m.appendReplacement(sb,
String.valueOf((char) Integer.parseInt(m.group(1), 16)));
}
m.appendTail(sb);
System.out.println(sb.toString());
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