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protected static class StrictMap
   
     extends HashMap
    
      {}
    
   

put

public V put(String key, V value) {      if (containsKey(key)) { //key: com.kq.mybatis.mapper.AccountMapper.getAccountList 完整的key,如果重复就会报错        throw new IllegalArgumentException(name + " already contains value for " + key            + (conflictMessageProducer == null ? "" : conflictMessageProducer.apply(super.get(key), value)));      }      if (key.contains(".")) {        final String shortKey = getShortName(key); // getAccountList        if (super.get(shortKey) == null) {          super.put(shortKey, value);        } else {          super.put(shortKey, (V) new Ambiguity(shortKey)); //shortKey有可能会重复的,重复就放Ambiguity        }      }      return super.put(key, value);    }

get

@Override    public V get(Object key) {      V value = super.get(key); // 根据key取,取不到报错      if (value == null) {        throw new IllegalArgumentException(name + " does not contain value for " + key);      }      if (value instanceof Ambiguity) { // 如果类型是Ambiguity,则报错        throw new IllegalArgumentException(((Ambiguity) value).getSubject() + " is ambiguous in " + name            + " (try using the full name including the namespace, or rename one of the entries)");      }      return value;    }

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