@ExceptionHandler与@Validated @RequestBody 三者配合使用可以很好的做到入参校验,具体demo如下:
接口
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import com.xx.common.core.CommonResult;
import com.xx.product.input.dto.ProductDetailCollectParam;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
@Api(tags = "商品详情页接口")
@RequestMapping(value = "/product")
public interface ProductDetailService {
@PostMapping("/collect")
@ApiOperation(value = "收藏商品接口")
public CommonResult collectProduct(@RequestBody @Validated ProductDetailCollectParam productDetailCollectParam);
}
入参类
import javax.validation.constraints.NotBlank;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
@Data
@ApiModel(value = "商品详情页入参")
public class ProductDetailCollectParam {
@NotBlank(message = "用户openid不能为空")
@ApiModelProperty(value = "用户openid")
private String openid;
@NotBlank(message = "商品id不能为空")
@ApiModelProperty(value = "商品id")
private String id;
}
全局捕获异常类
import org.springframework.web.bind.annotation.RestControllerAdvice;
import java.util.List;
import javax.validation.ConstraintViolationException;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import com.xx.common.core.CommonResult;
import cn.hutool.core.util.StrUtil;
import lombok.extern.slf4j.Slf4j;
@Slf4j
@RestControllerAdvice
public class GlobalExecptionHandler {
/**
* 全局异常拦截
* @param e
* @return
*/
@ExceptionHandler(Exception.class)
public CommonResult handler(Exception exception) {
StringBuilder errMsg = new StringBuilder();
// 方法参数无效 异常
if(exception instanceof MethodArgumentNotValidException) {
BindingResult bindResult = ((MethodArgumentNotValidException) exception).getBindingResult();
List<FieldError> fieldErrorList = bindResult.getFieldErrors();
fieldErrorList.forEach(fieldErrors -> {
FieldError fieldError = fieldErrors;
if (StrUtil.isNotBlank(errMsg.toString())) {
errMsg.append(",");
}
errMsg.append(fieldError.getDefaultMessage());
}
);
}else if (exception instanceof ConstraintViolationException) {
// 约束冲突异常
}
// log.error("异常:",exception);
return CommonResult.failed(errMsg.toString());
}
参考链接:https://www.cnblogs.com/cjyboy/p/11465876.html
参考链接:https://blog.csdn.net/lzhcoder/article/details/98870852 |