字符串用区分大小写的替换正则表达式

Question

I want to replace all matching occurrences of 'searchString' from 'targetString' (maintaining their case from targetString) with <span class="xyz">searchString</span> in JAVA

For example - targetString - "Super Sports" searchString - "s" and "S" and "Sp" and "SP" and "Sr" Resulting targetString should be -

for "s" - <span>S</span>uper <span>S</span>port<span>s</span>

for "S" - <span>S</span>uper <span>S</span>port<span>s</span>

for "Sp" - Super <span>Sp</span>orts

I've done it in Javascript- but need it in Java -

var applyHighlighting = function(productFilterKeyword) {
            if (productFilterKeyword != "") {
                for (var i = 0; i < $scope.highlightableElements.length; i++) {
                    var regexp = new RegExp(productFilterKeyword, 'ig');
                    $scope.highlightableElements[i].sourceHTML = $scope.highlightableElements[i].innerHTML;
                    $scope.highlightableElements[i].innerHTML = $scope.highlightableElements[i].sourceHTML.replace(regexp, '<span style="background-color: yellow">$&</span>');
                }
            }
        }

Answer 1

In case of details, you have post in comments, it is not as hard as you thinsk.

Just replace all of mathces to span them_self span:

  String original, result, regex;
  String your_search_string = "S";//for example
  original = .....
  regex = "(" + your_search_string + ")";
  result = original.replaceAll(regex, "<span>$1</span>");

$1 in java regex is link to a group. the zero group $0 is a whole regex.