java 敏感字过滤

 /**
     * 
     * @param src 要过滤的语句
     */
	@Override
	public Set<String> checkSensitiveWords(String src) {
		if(AppUtils.isBlank(src)){
			return null;
		}
                // 把数据库中的敏感字 塑造成list集合
		 List<String> sensitiveWordList = sensitiveWordDao.getWords(sortId, nsortId, subNsortId);
		 Map<Character,List<String>> wordMap=new HashMap<Character,List<String>>();
	        for (String s:sensitiveWordList){
	            char c=s.charAt(0);
	            List<String> strs=wordMap.get(c);
	            if (strs==null){
	                strs=new ArrayList<String>();
	                wordMap.put(c,strs);
	            }
	            strs.add(s);
	        }
	        String temp=null;
	        String find;
	        char c;
	        Set<String> findwords = new HashSet<String>();
	        for (int i=0;i<src.length();i++){
	        		c=src.charAt(i);
	             	find=null;
	            if (wordMap.containsKey(c)){
	                List<String> words=wordMap.get(c);
	                for (String s:words){
	                    temp=src.substring(i,(s.length()<=(src.length()-i))?i+s.length():i);
	                    if (s.equals(temp)){
	                        find=s;
	                        break;
	                    }
	                }
	            }
	            if (find!=null && findwords.size()<=10){           	
	            	findwords.add(find);
	                i+=(find.length()-1);  
	            }
	        }  
	        
		return findwords;
	}

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