参数类型错误返回错误提示

import lombok.AllArgsConstructor;

import lombok.extern.slf4j.Slf4j;

import org.example.CommonResult;

import org.springframework.http.converter.HttpMessageNotReadableException;

import org.springframework.validation.BindException;

import org.springframework.validation.FieldError;

import org.springframework.web.bind.annotation.ExceptionHandler;

import org.springframework.web.bind.annotation.RestControllerAdvice;

import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;

import static org.example.GlobalErrorCodeConstants.BAD_REQUEST;

@RestControllerAdvice

@AllArgsConstructor

@Slf4j

public class GlobalExceptionHandler {

/**

* 处理 SpringMVC get请求参数类型错误

* 例如说,接口上设置了 @RequestParam("xx") 参数为 Integer,结果传递 xx 参数类型为 String

*/

@ExceptionHandler(MethodArgumentTypeMismatchException.class)

public CommonResult methodArgumentTypeMismatchExceptionHandler(MethodArgumentTypeMismatchException ex) {

log.warn("[missingServletRequestParameterExceptionHandler]", ex);

return CommonResult.error(BAD_REQUEST.getCode(), String.format("请求参数类型错误:%s", ex.getMessage()));

}

/**

* 处理 SpringMVC post请求参数类型错误

* 例如说,接口上设置了 @@RequestBody 参数为 Integer,结果传递 xx 参数类型为 String

*/

@ExceptionHandler(HttpMessageNotReadableException.class)

public CommonResult httpMessageNotReadableExceptionHandler(HttpMessageNotReadableException ex) {

log.warn("[missingServletRequestParameterExceptionHandler]", ex);

return CommonResult.error(BAD_REQUEST.getCode(), String.format("请求参数类型错误:%s", ex.getMessage()));

}

/**

* 处理 SpringMVC get请求参数类型错误

* 例如说,接口上设置乐对象类型接收参数 参数为 Integer,结果传递 xx 参数类型为 String

*/

@ExceptionHandler(BindException.class)

public CommonResult bindExceptionHandler(BindException ex) {

log.warn("[handleBindException]", ex);

FieldError fieldError = ex.getFieldError();

// 断言,避免告警

assert fieldError != null;

return CommonResult.error(BAD_REQUEST.getCode(), String.format("请求参数不正确:%s", fieldError.getDefaultMessage()));

}

}

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