同一账号只写第一次，不同账号第一次爆炸 ，就因为下面部分得到逻辑有问题

修改后的代码如下：1.成功完成角色注册信息的数据库化记录。2.每个账号上限3个角色。3.角色是可以重名的，但是角色的id不会重名。

internal class UserCache
{private ConcurrentDictionary<string, List<string>> userPlayerIds = dataUserPlayerIds();//private ConcurrentDictionary<string, List<string>> userPlayerIds = new ConcurrentDictionary<string, List<string>>();//private ConcurrentDictionary<string, PlayerModel> players = new ConcurrentDictionary<string, PlayerModel>();private ConcurrentDictionary<string, PlayerModel> players = dataPlayers();//所有账号的角色信息，虽然角色信息中不包含账号idpublic static ConcurrentDictionary<string, List<string>> dataUserPlayerIds()//这样好像就行了{StreamReader file = new StreamReader("userPlayerIds.txt");string all = file.ReadToEnd();file.Close();ConcurrentDictionary<string, List<string>> results = new ConcurrentDictionary<string, List<string>>();try{//ConcurrentDictionary<string, List<string>> results = JsonConvert.DeserializeObject<ConcurrentDictionary<string, List<string>>>(JsonConvert.DeserializeObject(all).ToString());results = JsonConvert.DeserializeObject<ConcurrentDictionary<string, List<string>>>(JsonConvert.DeserializeObject(all).ToString());}catch {Console.WriteLine("dataUserPlayerIds()中出现问题");}return results;//return JsonConvert.DeserializeObject(all);}public static ConcurrentDictionary<string, PlayerModel> dataPlayers()//这样好像就行了{StreamReader file = new StreamReader("players.txt");string all = file.ReadToEnd();file.Close();ConcurrentDictionary<string, PlayerModel> results = new ConcurrentDictionary<string, PlayerModel>();try{results = JsonConvert.DeserializeObject<ConcurrentDictionary<string, PlayerModel>>(JsonConvert.DeserializeObject(all).ToString());}catch {Console.WriteLine("dataPlayers()中出现问题");}return results;//return JsonConvert.DeserializeObject(all);}public void put(string accId, PlayerModel model)//逻辑刚开始有些小问题，问题不大{bool ur = false;if (this.userPlayerIds.ContainsKey(accId))//这里出了问题了，同在一个put函数中{List<string> stringList;List<string> stringList_out;this.userPlayerIds.TryGetValue(accId, out stringList);//得到已有的角色id（player）stringList.Add(model.id);//给账号新加一个角色//如果已存账号信息--//重复的键，TryAdd是家不进去的ur = this.userPlayerIds.TryRemove(accId, out stringList_out);ur = this.userPlayerIds.TryAdd(accId, stringList);//同名 键 应该是可以覆盖的--不是第一次先用字符串修改值，再增加到对应键值对中}else{//重来没有，自然不会重复ur = this.userPlayerIds.TryAdd(accId, new List<string>() { model.id });//第一次只加1个}if (ur)//这次应该没问题了{StreamWriter file = new StreamWriter("userPlayerIds.txt");string json = JsonConvert.SerializeObject(this.userPlayerIds);Console.WriteLine("userPlayerIds.TryAdd：" + json);file.Write(json);file.Close();}bool pr=this.players.TryAdd(model.id, model);//最后真正怎加角色信息 player=角色 account=账号//将角色详细信息写入文件if (pr){StreamWriter file = new StreamWriter("players.txt");string json = JsonConvert.SerializeObject(this.players);Console.WriteLine("players.TryAdd：" + json);file.Write(json);  file.Close();}}