正则表达式使用Java String.replaceAll

我想要替换如下的 java字符串值.下面的代码不起作用.

cleanInst.replaceAll("[<i>]","");
        cleanInst.replaceAll("[</i>]","");
        cleanInst.replaceAll("[//]","/");
        cleanInst.replaceAll("[\bPhysics Dept.\b]","Physics Department");
        cleanInst.replaceAll("[\b/n\b]",";");
        cleanInst.replaceAll("[\bDEPT\b]","The Department");
        cleanInst.replaceAll("[\bDEPT.\b]","The Department");
        cleanInst.replaceAll("[\bThe Dept.\b]","The Department");
        cleanInst.replaceAll("[\bthe dept.\b]","The Department");
        cleanInst.replaceAll("[\bThe Dept\b]","The Department");
        cleanInst.replaceAll("[\bthe dept\b]","The Department");
        cleanInst.replaceAll("[\bDept.\b]","The Department");
        cleanInst.replaceAll("[\bdept.\b]","The Department");
        cleanInst.replaceAll("[\bdept\b]","The Department");

实现上述替换的最简单方法是什么？

如果它是您正在使用的功能,则存在问题.每次调用都会再次编译每个正则表达式.最好将它们创建为常量.你可以有这样的东西.

private static final Pattern[] patterns = {
    Pattern.compile("</?i>"),Pattern.compile("//"),// Others
};

private static final String[] replacements = {
    "","/",// Others
};

public static String cleanString(String str) {
    for (int i = 0; i < patterns.length; i++) {
        str = patterns[i].matcher(str).replaceAll(replacements[i]);
    }
    return str;
}

原文地址：https://www.jb51.cc/regex/357030.html