发布到Spring Boot 2自定义端点时的JSON解码错误

Question

我在Spring Boot 2.0.4.RELEASE中使用自定义端点

我的自定义端点如下，

@Endpoint(id = "mycaches" ,enableByDefault=true)
@Component
public class CacheEndpoint {
@WriteOperation
    public String invalidateCacheKeys(@Selector String arg0,List<String> cacheList) {
        System.out.println(cacheList);
        return "Success";
    }
}

基本上，我想接收一组键并进行相应的处理。

当我尝试通过其余客户通过以下方式提交请求

[
"1","2","3"
]

我收到以下错误。

Response status 400 with reason "Failed to read HTTP message"; nested exception is org.springframework.core.codec.DecodingException: JSON decoding error: Cannot deserialize instance of `java.util.LinkedHashMap` out of VALUE_STRING token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.util.LinkedHashMap` out of VALUE_STRING token
 at [Source: UNKNOWN; line: -1, column: -1]

如果我使用以下输入内容提交，

 {
    "cacheList": ["1","2","3"]
}

我收到以下错误，

 Response status 400 with reason "Failed to read HTTP message"; nested exception is org.springframework.core.codec.DecodingException: JSON decoding error: Cannot deserialize instance of `java.lang.String` out of VALUE_STRING token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.lang.String` out of VALUE_STRING token
 at [Source: UNKNOWN; line: -1, column: -1] (through reference chain: java.util.LinkedHashMap["cacheList"])

有人可以帮助我解决问题。