@RestControllerを使用して、戻り値の統一処理

2218 ワード 
@ControllerAdvice
public class RestControllerResponseAdvice implements ResponseBodyAdvice {

    @Override
    public boolean supports(MethodParameter returnType, Class extends HttpMessageConverter>> converterType) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType,
            Class extends HttpMessageConverter>> selectedConverterType, ServerHttpRequest request,
            ServerHttpResponse response) {
        //  body 
        if (body instanceof String) {
            String msg = (String) body;
            ResultJson resultJson = new ResultJson("-1", msg);
            //  controller String ， ResultJson ， StringMessageConverter ， 
            return JSON.toJSONString(resultJson);
        } else if (body instanceof Object) {
            Object data = (Object) body;
            ResultJson resultJson = new ResultJson(data);
            return resultJson;
        }

        return body;
    }
}



/**
 * 
 *  ：  
 * 
 * @author JiaJiCheng
 * @date 2018 8 24 
 */
public class ResultJson implements Serializable{

    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    //    0
    private String code = "0";
    //  
    private String msg = "";
    //  
    private Object data = "";

    public ResultJson() {
    }

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public Object getData() {
        return data;
    }

    public void setData(Object data) {
        this.data = data;
    }

    public ResultJson(String code) {
        this.code = code;
    }

    public ResultJson(String code, String msg) {
        this.code = code;
        this.msg = msg;
    }

    public ResultJson(Object data) {
        this.data = data;
    }

    public ResultJson(String code, String msg, Object data) {
        this.code = code;
        this.msg = msg;
        this.data = data;
    }

}
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