如何检查字符串是否包含搜索项

Question

I have a String and a String[] filled with search items.

How can I check whether my String contains all of the search items?

Here is an example:

Case 1:

String text = "this is a stupid test";
String[] searchItems = new String[2];
searchItems[0] = "stupid";
searchItems[1] = "test";

Case 2:

String text = "this is a stupid test";
String[] searchItems = new String[2];
searchItems[0] = "stupid";
searchItems[1] = "tes";

In case 1, the method should return true , but in case 2 the method should return false .

Answer 1

You can do this using word boundaries in regex:

boolean result = true;
for (String item : searchItems) {
    String pattern = ".*\\b" + item + "\\b.*";
    // by using the &&, result will be true only if text matches all patterns.
    result = result && text.matches(pattern);
}

The boundaries ensure that the search terms will only be matched if the whole word is present in your text. So, "tes" will not match against "test" because "\\btes\\b" is not a substring of "\\btest\\b" .

Answer 2

I would try to split the string with spaces and then loop thought all the splinted parts.

Something like this for your code to work:

String text = "this is a stupid test";
List<String> searchItems = new ArrayList<String>();
searchItems.add("stupid");
searchItems.add("test");
for(String word : test.split(" ")) {
   if(searchItems.contains(word)){
      //do your stuff when the condition is true ...
   } else {
      //do your stuff when the condition is false ...
   }
}

Answer 3

I would make an array of all words in the text. Then check it with 2 for loops if the textArray contains all the searchterms.

public boolean search(String text, String[] searchItems) {

    String[] textArray = text.split(" ");

    for(String searchitem: searchItems) {

       boolean b = false;

       for(String word : textArray) {

           if(word.equals(searchitem)) {
               b = true;
               break;
           }

        }

     // text doesn't contain searchitem
     if(!b) return false;

     }

     return true;

}

Answer 4

text.matches(".*\\b" + searchItems[0] + "\\b.*")

注意： "\\\\b"将确保仅匹配“整个单词”。

Answer 5

public boolean findIfAllItemsMatch(String[] searchItems, String text) {
    boolean allItemsMatch = true;
    for (String item_ : searchItems) {
        if(!text.contains(item_)) {  
              allItemsMatch = false;
              break;
         }
    }
    return allItemsMatch;
}