开发JSP时碰到的问题,%u554a这样的编码格式用什么解码?

[Brunhild]

%u554a=啊

[piaopiao11]

好像%u554a 就是 '\u554a'

[Brunhild]

该如何解码呢?

[孟子E章]

unicode

[piaopiao11]

不知道你是什么情况
这样应该可以
String ss[]="%u554a".split("%u");
for(int i=0;i<ss.length;i++){
if(ss[i].length()>0){
char a=(char) Integer.parseInt(ss[i],16);
System.out.println(a);
}
}

[孟子E章]

public static String unescape (String src) {
StringBuffer tmp = new StringBuffer();
tmp.ensureCapacity(src.length());
int lastPos=0,pos=0;
char ch;
while (lastPos<src.length()) {
pos = src.indexOf("%",lastPos);
if (pos == lastPos){
if (src.charAt(pos+1)=='u') {
ch = (char)Integer.parseInt(src.substring(pos+2,pos+6),16);
tmp.append(ch);
lastPos = pos+6;
}
else
{
ch = (char)Integer.parseInt(src.substring(pos+1,pos+3),16);
tmp.append(ch);
lastPos = pos+3;
}
}
else
{
if (pos == -1)
{
tmp.append(src.substring(lastPos));
lastPos=src.length();
}
else
{
tmp.append(src.substring(lastPos,pos));
lastPos=pos;
}
}
}
return tmp.toString();
}

String a = "%u554a";
out.print(unescape(a));

java版本的escape和unescape函数

http://www.blogjava.net/emu/articles/4773.html

[Brunhild]

哦，原来要自己解啊！
多谢孟子，不过这种情况我比较喜欢用正则：
static String unescape(String src) {
//Pattern pattern=Pattern.compile("%u[0-9a-f]{4}", Pattern.CASE_INSENSITIVE);
Pattern pattern=Pattern.compile("%u[0-9a-fA-F]{4}");
Matcher macher=pattern.matcher(src);

StringBuffer buffer=new StringBuffer();
int start=0;
while(macher.find()) {
buffer.append(src, start, macher.start());
start=macher.start();
String code=src.substring(start+2, start+6);
char ch=(char)Integer.parseInt(code, 16);
buffer.append(ch);
start=macher.end();
}
buffer.append(src, start, src.length());
return buffer.toString();
}