SpringBoot提交日期参数失败的解决方法

Z时代
2024-01-10
分类：综合

前端或移动端向后台传递参数时，时间类型的参数通常会从转换成String类型来进行传递，而后台实体中对应的数据类型是Date类型就会发生强转异常。

@Configuration
public class FastJsonConfiguration {

   @Autowired
   private RequestMappingHandlerAdapter handlerAdapter;
@PostConstruct // @PostContruct是spring框架的注解，在方法上加该注解会在项目启动的时候执行该方法，也可以理解为在spring容器初始化的时候执行该方法。
    public void initEditableValidation() {
        ConfigurableWebBindingInitializer initializer = (ConfigurableWebBindingInitializer) handlerAdapter.getWebBindingInitializer();
        if (initializer.getConversionService() != null) {
            GenericConversionService genericConversionService = (GenericConversionService) initializer.getConversionService();
            // 将自定义得字符串转日期实现类交给springboot 处理
            genericConversionService.addConverter(new StringToDateConverter());
        }
    }
}

public class StringToDateConverter implements Converter<String, Date> {

   private static final String dateFormat = "yyyy-MM-dd HH:mm:ss";
   private static final String shortDateFormat = "yyyy-MM-dd";
   private static final String dateTimeFormat = "HH:mm:ss";
   @Override
   public Date convert(String source) {
       if (StrUtil.isBlank(source) || StrUtil.equalsIgnoreCase("undefined", source) || StrUtil.equalsIgnoreCase("null", source)) {
           return null;
       }
       source = source.trim();
       try {
           SimpleDateFormat formatter;
           if (source.contains("-")) {
               if (source.contains(":")) {
                   formatter = new SimpleDateFormat(dateFormat);
               } else {
                   formatter = new SimpleDateFormat(shortDateFormat);
               }
               Date dtDate = formatter.parse(source);
               return dtDate;
           } else if(source.contains(":")){
               formatter = new SimpleDateFormat(dateTimeFormat);
               Date dtDate = formatter.parse(source);
               return dtDate;
           }
       } catch (Exception e) {
           throw new RuntimeException(String.format("parser %s to Date fail", source));
       }

       throw new RuntimeException(String.format("parser %s to Date fail", source));
   }