神领物流Day02复盘-运费业务 - 草稿

1️⃣

Validated自定义AOP

java


/**
 * 请求参数校验切面，统一对Controller中@RequestBody映射的对象进行校验，在Controller方法中无需单独处理
 */
@Aspect
@Slf4j
@EnableAspectJAutoProxy
@Component
public class ValidatedAspect {

    @Resource
    private Validator validator;

    @Around("execution(* com.sl..controller.*Controller.*(..))")
    public Object around(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
        // 获取@RequestBody映射的对象
        Object body = AspectUtil.getBody(proceedingJoinPoint);
        // 不为空的body进行拦截校验
        if (!ObjectUtil.isEmpty(body)) {
            // 进行校验
            Set<ConstraintViolation<Object>> validateResult = validator.validate(body);
            if (CollUtil.isNotEmpty(validateResult)) {
                //没有通过校验，抛出异常，由统一异常处理机制进行处理，响应400
                String info = JSONUtil.toJsonStr(validateResult.stream()
                        .map(ConstraintViolation::getMessage).collect(Collectors.toList()));
                throw new SLException(info, HttpStatus.BAD_REQUEST.value());
            }
        }
        //校验通过，执行原方法
        return proceedingJoinPoint.proceed(proceedingJoinPoint.getArgs());
    }
}

java


 /**
     * 获取请求体
     *
     * @param pjp {@link ProceedingJoinPoint}
     * @return {@code Object}
     */
    public static Object getBody(ProceedingJoinPoint pjp) {
        Object[] args = pjp.getArgs();
        Method method = getMethod(pjp);

        if (ObjectUtil.isNotEmpty(args)) {
            Annotation[][] parameterAnnotations = method.getParameterAnnotations();
            for (int count = 0; count < parameterAnnotations.length; count++) {
                for (Annotation annotation : parameterAnnotations[count]) {
                    if (annotation instanceof RequestBody) {
                        return args[count];
                    }
                }
            }
        }
        return null;
    }

两种异常 Advice全局异常处理

@RestControllerAdvice @ExceptionHandler(ValidationException.class)

@Resource @Autowired

Java标准vs Spring标准

Nacos配置共享与覆盖

单机日志logback.xml

通过加入一个@Builder

java


package com.sl.ms.carriage.domain.dto;

import io.swagger.annotations.ApiModelProperty;
import lombok.Builder;
import lombok.Data;

import javax.validation.constraints.*;
import java.time.LocalDateTime;
import java.util.List;

/**
 * 运费模板对象
 */
@Data
@Builder
public class CarriageDTO {

	/**
	 * 运费模板id
	 */
	@ApiModelProperty(value = "运费模板id")
	private Long id;

	/**
	 * 模板类型：1-同城寄，2-省内寄，3-经济区互寄，4-跨省
	 */
	@ApiModelProperty(value = "模板类型：1-同城寄，2-省内寄，3-经济区互寄，4-跨省", required = true)
	@Max(value = 4, message = "类型值必须是1、2、3、4")
	@Min(value = 1, message = "类型值必须是1、2、3、4")
	@NotNull(message = "模板类型不能为空")
	private Integer templateType;

	/**
	 * 运送类型：1-普快，2-特快
	 */
	@ApiModelProperty(value = "运送类型：1-普快，2-特快", required = true)
	@Max(value = 2, message = "类型值必须是1、2")
	@Min(value = 1, message = "类型值必须是1、2")
	@NotNull(message = "运送类型不能为空")
	private Integer transportType;

	/**
	 * 关联城市：1-全国，2-京津冀，3-江浙沪，4-川渝，5-黑吉辽
	 */

	@ApiModelProperty(value = "关联城市：1-全国，2-京津冀，3-江浙沪，4-川渝，5-黑吉辽", required = true)
	@NotNull(message = "关联城市不能为空")
	private List<String> associatedCityList;

	/**
	 * 首重价格
	 */
	@ApiModelProperty(value = "首重价格", required = true)
	@DecimalMin(value = "1.0", message = "首重价格必须大于等于1")
	@DecimalMax(value = "999.9", message = "首重价格必须小于等于999.9")
	@NotNull(message = "首重价格不能为空")
	private Double firstWeight;

	/**
	 * 续重价格
	 */
	@ApiModelProperty(value = "续重价格", required = true)
	@DecimalMin(value = "1.0", message = "续重价格必须大于等于1")
	@DecimalMax(value = "999.9", message = "续重价格必须小于等于999.9")
	@NotNull(message = "续重价格不能为空")
	private Double continuousWeight;

	/**
	 * 轻抛系数
	 */
	@ApiModelProperty(value = "轻抛系数", required = true)
	@Min(value = 1, message = "轻抛系数必须大于等于1")
	@Max(value = 99999, message = "轻抛系数必须小于等于99999")
	@NotNull(message = "轻抛系数不能为空")
	private Integer lightThrowingCoefficient;

	/**
	 * 创建时间
	 */
	@ApiModelProperty(value = "创建时间")
	private LocalDateTime created;

	/**
	 * 更新时间
	 */
	@ApiModelProperty(value = "更新时间")
	private LocalDateTime updated;

	@ApiModelProperty(value = "运费")
	private Double expense;

	@ApiModelProperty(value = "计费重量，单位：kg")
	private Double computeWeight;
}

会出现以下错误

java


org.springframework.http.converter.HttpMessageConversionException: Type definition error: [simple type, class com.sl.ms.carriage.domain.dto.CarriageDTO]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `com.sl.ms.carriage.domain.dto.CarriageDTO` (no Creators, like default constructor, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
 at [Source: (org.springframework.util.StreamUtils$NonClosingInputStream); line: 1, column: 2]
	at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:388)
	at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.read(AbstractJackson2HttpMessageConverter.java:343)
	at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver.readWithMessageConverters(AbstractMessageConverterMethodArgumentResolver.java:185)
	at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.readWithMessageConverters(RequestResponseBodyMethodProcessor.java:160)
	at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.resolveArgument(RequestResponseBodyMethodProcessor.java:133)
	at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:122)
	at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:179)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:146)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1067)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:681)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:889)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1743)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `com.sl.ms.carriage.domain.dto.CarriageDTO` (no Creators, like default constructor, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
 at [Source: (org.springframework.util.StreamUtils$NonClosingInputStream); line: 1, column: 2]
	at com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:67)
	at com.fasterxml.jackson.databind.DeserializationContext.reportBadDefinition(DeserializationContext.java:1904)
	at com.fasterxml.jackson.databind.DatabindContext.reportBadDefinition(DatabindContext.java:400)
	at com.fasterxml.jackson.databind.DeserializationContext.handleMissingInstantiator(DeserializationContext.java:1349)
	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1415)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:351)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:184)
	at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:322)
	at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4674)
	at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3682)
	at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:380)
	... 51 common frames omitted