Feign接口方法返回类型为R<String>,接口实现用R.fail(""),会报反序列化异常

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chenrc 剑童 2023-01-05 00:33

"Error while extracting response for type [org.springblade.core.tool.api.R<java.lang.String>] and content type [application/json;charset=UTF-8]; nested exception is org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deserialize instance of `java.lang.String` out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.lang.String` out of START_OBJECT token\n at [Source: (PushbackInputStream); line: 1, column: 36] (through reference chain: org.springblade.core.tool.api.R[\"data\"])

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chenrc

2023-01-05 00:35

代码具体是这样的
public R<String> test(){
return R.fail("异常");
}

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