Result Maps collection does not contain value
时间: 2023-11-27 09:58:43 浏览: 28
This error message usually occurs when you are trying to retrieve a value from a `Map` but the key you are using does not exist in the `Map`.
To fix this error, you should first check that you are using the correct key to retrieve the value from the `Map`. If you are not sure, you can print out the keys in the `Map` to see what keys are available.
Here is an example of how to print out the keys in a `Map`:
```
Map<String, String> map = new HashMap<>();
// add some values to the map
map.put("key1", "value1");
map.put("key2", "value2");
// print out the keys in the map
for (String key : map.keySet()) {
System.out.println(key);
}
```
Once you have confirmed that you are using the correct key, you should also check that the `Map` actually contains the key by using the `containsKey` method:
```
if (map.containsKey("key1")) {
// do something with the value
} else {
// handle the case where the key does not exist in the map
}
```
By checking that the key exists in the `Map`, you can avoid the "Result Maps collection does not contain value" error.