springboot 全局 Date参数接收 String格式转换异常报错

news2024/9/22 6:49:41

报错：

.w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deserialize value of type `java.util.Date` from String "2022-12-13 11:22:11": not a valid representation (error: Failed to parse Date value '2022-12-13 11:22:11': Cannot parse date "2022-12-13 11:22:11": while it seems to fit format 'yyyy-MM-dd'T'HH:mm:ss.SSSX', parsing fails (leniency? null)); nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type `java.util.Date` from String "2022-12-13 11:22:11": not a valid representation (error: Failed to parse Date value '2022-12-13 11:22:11': Cannot parse date "2022-12-13 11:22:11": while it seems to fit format 'yyyy-MM-dd'T'HH:mm:ss.SSSX', parsing fails (leniency? null))<EOL> at [Source: (org.springframework.util.StreamUtils$NonClosingInputStream); line: 4, column: 14] (through reference chain: com.example.doatest.pojo.Car["createDate"])]

原因：
json序列化类没对上，参数接收用的Date ,传参拿到是 String 。需要做个转换。

场景：
接收参数是 Date类型

传参是 String格式：

这个其实已经是很久很久很久之前就已经做过解决方案介绍了：

Springboot 全局日期格式化，只需要几行小代码_小目标青年的博客-CSDN博客_spring 日期格式

我还是推荐 yml配置的方案：

#时区，默认为格林尼治时间，即少8小时，所以我们需要+8
spring.jackson.time-zone=GMT+8
#时间格式转换定义
spring.jackson.date-format=yyyy-MM-dd HH:mm:ss

轻松搞掂：

可能有人就是执拗啊，就是不想写配置，就是喜欢写代码，然后又要全局生效转换，那怎么办？

也很好办，复制粘贴代码送给你：

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import java.text.SimpleDateFormat;
import java.util.List;

/**
 * @Author: JCccc
 * @Date: 2022-4-11 18:45
 * @Description:
 */
@Configuration
public class MyWebMvcConfigurer implements WebMvcConfigurer {

    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        MappingJackson2HttpMessageConverter jackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
        ObjectMapper objectMapper = jackson2HttpMessageConverter.getObjectMapper();
        objectMapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));
        SimpleModule simpleModule = new SimpleModule();
        objectMapper.registerModule(simpleModule);
        jackson2HttpMessageConverter.setObjectMapper(objectMapper);
        converters.add(0, jackson2HttpMessageConverter);
    }
    
}

直接把这个类丢到你的项目里面：