SpringMVC日期参数转换问题Can not deserialize value of type java.util.Date from String 2018-07-19 15:59:34

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问题分析

报错日志

Caused by: com.fasterxml.jackson.databind.exc.InvalidFormatException: Can not deserializevalue of type java.util.Date from Stringto parse Date value '2018-07-19 15:59:34': Can not parse date "2018-07-19 15:59:34": while it seems to fit format 'yyyy-MM-dd'T'HH:mm:ss.SSS', 
parsing fails (leniency? null))

问题分析:
前端传过来的日期格式为yyyy-MM-dd HH:mm:ss.SSS由于前端传递过来的是日期字符串格式的值，而SpringMVC无法将日期字符串格式的值解析为日期格式

解决方案一

新增一个类继承 org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter 父类覆写父类的configureMessageConverters方法，增加MappingJackson2HttpMessageConverter类型的对象值

@Component
class WebConfigurer extends WebMvcConfigurerAdapter {@Overridepublic void configureMessageConverters(List  < HttpMessageConverter  <   ?     >     >      converters) {MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();//设置日期格式ObjectMapper objectMapper = new ObjectMapper();SimpleDateFormat smt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");objectMapper.setDateFormat(smt);mappingJackson2HttpMessageConverter.setObjectMapper(objectMapper);//设置中文编码格式List<MediaType> list = new ArrayList<MediaType>();list.add(MediaType.APPLICATION_JSON_UTF8);mappingJackson2HttpMessageConverter.setSupportedMediaTypes(list);converters.add(mappingJackson2HttpMessageConverter);super.configureMessageConverters(converters);}
}

方案二

 @Configuration
public class WebWeixinConfig {@Beanpublic MappingJackson2HttpMessageConverter getMappingJackson2HttpMessageConverter() {MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();//设置日期格式ObjectMapper objectMapper = new ObjectMapper();SimpleDateFormat smt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");objectMapper.setDateFormat(smt);mappingJackson2HttpMessageConverter.setObjectMapper(objectMapper);//设置中文编码格式List<MediaType> list = new ArrayList<MediaType>();list.add(MediaType.APPLICATION_JSON_UTF8);mappingJackson2HttpMessageConverter.setSupportedMediaTypes(list);return mappingJackson2HttpMessageConverter;}}