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我有我的控制器，如下所示。 RelationType是Table類中的字段。我有以下例外。有任何想法嗎？無法讀取JSON
org.springframework.http.converter.HttpMessageNotReadableException: Could not read JSON: Can not construct instance of com.mycompany.myapp.core.domain.RelationType from String value 'unionetomany': value not one of declared Enum instance names: [unionetoone, unionetomany]
at [Source: [email protected]; line: 1, column: 435] (through reference chain: com.mycompany.myapp.core.domain.Table["relations"]->com.mycompany.myapp.core.domain.Relation["relationtype"]); nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Can not construct instance of com.mycompany.myapp.core.domain.RelationType from String value 'unionetomany': value not one of declared Enum instance names: [unionetoone, unionetomany, unimanytoone, unimanytomany, bionetoone, bionetomany, bimanytoone, bimanytomany]
at [Source: [email protected]; line: 1, column: 435] (through reference chain: com.mycompany.myapp.core.domain.Table["relations"]->com.mycompany.myapp.core.domain.Relation["relationtype"])
at org.springframework.http.converter.json.MappingJackson2HttpMessageConverter.readJavaType(MappingJackson2HttpMessageConverter.java:228)
at org.springframework.http.converter.json.MappingJackson2HttpMessageConverter.read(MappingJackson2HttpMessageConverter.java:220)
at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver.readWithMessageConverters(AbstractMessageConverterMethodArgumentResolver.java:138)
at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.readWithMessageConverters(RequestResponseBodyMethodProcessor.java:183)
at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.resolveArgument(RequestResponseBodyMethodProcessor.java:98)
at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:79)
@RequestMapping(method = RequestMethod.POST)
public void validateSchema(@RequestBody Table[] tables, HttpServletRequest request) {
......
}
public enum RelationType {
UNI_ONE_TO_ONE("unionetoone"),
UNI_ONE_TO_MANY("unionetomany");
private final String text;
private RelationType(final String text) {
this.text = text;
}
@Override
public String toString() {
return text;
}
}