解决springboot 实体类String转Date类型的坑
目录
- springboot 实体类String转Date类型
- Date解析String类型的参数
springboot 实体类String转Date类型
前端传入一个String的时间字符串如:2019-07-18 23:59:59
后端实体类要在头顶加注解:
@DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
不然会出现报错
Date解析String类型的参数
1.首先建立String to Date 的解析实现
import org.apache.commons.lang3.StringUtils; import org.springframework.core.convert.converter.Converter; import java.text.SimpleDateFormat; import java.util.Date; 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"; @Override public Date convert(String value) { if (StringUtils.isEmpty(value)) { return null; } value = value.trim(); try { if (value.contains("-")) { SimpleDateFormat formatter; if (value.contains(":")) { formatter = new SimpleDateFormat(dateFormat); } else { formatter = new SimpleDateFormat(shortDateFormat); } Date dtDate = formatter.parse(value); return dtDate; } else if (value.matches("^\\d+$")) { Long lDate = new Long(value); return new Date(lDate); } } catch (Exception e) { throw new RuntimeException(String.format("parser %s to Date failed", value)); } throw new RuntimeException(String.format("parser %s to Date failed", value)); } }
2.创建全局的解析配置
import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Configuration; import org.springframework.core.convert.support.GenericConversionService; import org.springframework.web.bind.support.ConfigurableWebBindingInitializer; import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter; import javax.annotation.PostConstruct; @Configuration public class DateHandlerAdapter { @Autowired private RequestMappingHandlerAdapter handlerAdapter; /** * 增加字符串转日期的全局适配器 */ @PostConstruct public void initEditableAvlidation() { ConfigurableWebBindingInitializer initializer = (ConfigurableWebBindingInitializer) handlerAdapter .getWebBindingInitializer(); if (initializer.getConversionService() != null) { GenericConversionService genericConversionService = (GenericConversionService) initializer .getConversionService(); genericConversionService.addConverter(new StringToDateConverter()); } } }
添加完这两个文件以后 在传参数类型为Date的参数时就不会再报 date解析失败的错误了。
以上为个人经验,希望能给大家一个参考,也希望大家多多支持我们。
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