Question

想利用java里pattern功能处理对多个关键字的匹配查询

例如
Pattern pattern = Pattern.compile("切");
Matcher matcher = pattern.matcher(txt);
while (matcher.find()) {
String msg = ":" + matcher.group() + ":";
System.out.println(msg);
}
程序会从txt中把“切”提取出来，可是我不仅相提切，还想提取蒸煮炖炸等多个关键词，怎么办？
谢谢

Answer 1

Pattern pattern = Pattern.compile("切");
Matcher matcher = pattern.matcher(txt);
Matcher matcher2 = Pattern.compile("蒸").matcher(txt);
Matcher matcher3 = Pattern.compile("煮").matcher(txt);
Matcher matcher4 = Pattern.compile("炖").matcher(txt);
Matcher matcher5 = Pattern.compile("炸").matcher(txt);

boolean a = false;
boolean b = false;
boolean c = false;
boolean d = false;
boolean e = false;
while ((a = matcher.find())|| (b = matcher2.find())||(c = matcher3.find())||( d = matcher4.find())||(e = matcher5.find())) {
String msg ="";
if(a){
msg = ":" + matcher.group() + ":";
}else if(b){
msg = ":" + matcher2.group() + ":";
}else if(c){
msg = ":" + matcher3.group() + ":";
}else if(d){
msg = ":" + matcher4.group() + ":";
}else if(e){
msg = ":" + matcher5.group() + ":";
}
System.out.println(msg);
}

只不过这样比较麻烦，你可以自己精炼下，我想知道，你提取关键字是不是只是想确定是否包含，如果是你可以不用这个方法

Answer 2

Pattern pattern = Pattern.compile("[切蒸煮炖炸]");