英文:
How do I return a String Enum's value from a RESTful service using Spring Boot?
问题
这段代码中的问题是它返回了枚举值而不是字符串值。您可以尝试在控制器中使用枚举值的 getResult() 方法来获取字符串值，然后返回该字符串值。这将确保您得到的是字符串值而不是枚举值。例如：
// 在控制器中使用 getResult() 方法获取字符串值String resultString = resultEnum.getResult();// 然后返回 resultString
这样，在控制器中返回的将会是字符串值，而不是枚举值。
英文:
I have an enum that contains only three values, including one with spaces:
public enum ResultEnum {Sold("Sold"),No_deal_today("No deal today"),Appointment("Appointment");private String result;private ResultEnum(String result) {this.result = result;}public String getResult() {return result;}public static ResultEnum fromResult(String result) {switch (result) {case "Sold":return ResultEnum.Sold;case "No deal today":return ResultEnum.No_deal_today;case "Appointment":return ResultEnum.Appointment;default:throw new IllegalArgumentException("ResultEnum [" + result+ "] not supported.");}}}
I created a converter for it:
@Converter(autoApply = true)public class ResultConverter implements AttributeConverter<ResultEnum, String> {@Overridepublic String convertToDatabaseColumn(ResultEnum resultEnum) {return resultEnum.getResult();}@Overridepublic ResultEnum convertToEntityAttribute(String result) {return ResultEnum.fromResult(result);}}
This works great, except that it returns the Enum value in the results:
"result": "No_deal_today"
Is there a way to return the string value from the controller rather than the ENUM value?
"result": "No deal today"
Thanks!
答案1
得分: 2
只需将@JsonValue注解添加到getResult()方法中：
@JsonValuepublic String getResult() {return result;}
英文:
All I had to do was add the @JsonValue annotation to getResult():
@JsonValuepublic String getResult() {return result;}
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