System.Text.StringBuilder sb = new System.Text.StringBuilder(text.Length); |
string filterText = "需要过滤的脏字 以|分开";//脏字 可根据自己的方式用分隔符 |
|
string[] filterData = filterText.Split(‘|‘); |
foreach (var item in filterData) |
{ |
char value = item[0]; |
if (dicList.ContainsKey(value)) |
dicList[value].Add(item); |
else |
dicList.Add(value, new List<string>() { item }); |
} |
|
int count = text.Length; |
for (int i = 0; i < count; i++) |
{ |
char word = text[i]; |
if (dicList.ContainsKey(word))//如果在字典表中存在这个key |
{ |
int num = 0;//是否找到匹配的关键字 1找到0未找到 |
var data = dicList[word].OrderBy(g => g.Length);//把该key的字典集合按 字符数排序(方便下面从少往多截取字符串查找) |
|
foreach (var wordbook in data) |
{ |
if (i + wordbook.Length <= count)//如果需截取的字符串的索引小于总长度 则执行截取 |
{ |
string result = text.Substring(i, wordbook.Length);//根据关键字长度往后截取相同的字符数进行比较 |
if (result == wordbook) |
{ |
num = 1; |
sb.Append(GetString(result)); |
i = i + wordbook.Length - 1;//比较成功 同时改变i的索引 |
break; |
} |
} |
} |
if (num == 0) |
sb.Append(word); |
} |
else |
sb.Append(word); |
} |
return sb.ToString(); |
} |
/// <summary> |
/// 替换星号 |
/// </summary> |
/// <param name="value"></param> |
/// <returns></returns> |
private static string GetString(string value) |
{ |
string starNum = string.Empty; |
for (int i = 0; i < value.Length; i++) |
{ |
starNum += "*"; |
} |
return starNum; |
} |
//该代码片段来自于: http://www.sharejs.com/codes/csharp/5486 |
原文：http://www.cnblogs.com/wwy224y/p/4730591.html