Can not deserialize value of type java.util.Date from String异常解决办法

3 月，跳不动了？>>>

添加webConfigurer类

类中实现WebMvcConfigurer接口中的extendMessageConverters接口

1、初始化一个Jackson2Http消息转换器类（MappingJackson2HttpMessageConverter）

2、初始化一个ObjectMapper对象

3、将objectMapper赋值到mappingJackson2HttpMessageConverter中的ObjectMapper中，如果要自定义格式，可以先使用ObjectMapper.setDateFormat方法，自定义日期格式

4、设置中文编码，初始化一个MediaType列表List<MediaType> list = new ArrayList<>()

5、list.add(MediaType.APPLICATION_JSON_UTF8)

6、mappingJave2HttpMessageConverter.setSupportedMediatypes(list)

7、converters.add(mappingJave2HttpMessageConverter)

具体代码如下：


import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.util.ArrayList;
import java.util.List;

/**
 * Can not deserialize value of type java.util.Date from String异常解决办法
 * @program: ld-zkzx-web
 * @description
 * @author: ZhangXu
 * @create: 2020-03-21 14:28
 **/
@Component
public class WebConfigurer implements WebMvcConfigurer {

    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {

        MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
        //设置日期格式
        ObjectMapper objectMapper = new ObjectMapper();
    	/*SimpleDateFormat smt = new SimpleDateFormat("yyyy-MM-dd");
    	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);
    }
}

来源：oschina

链接：https://my.oschina.net/u/3358860/blog/3208917

标签

ObjectMapper

java

jackson