springboot2中使用@JsonFormat注解不生效的解决

<dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>${fastjson.version}</version>
        </dependency>
<dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>${jackson-mapper-asl.version}</version>
        </dependency> 
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>${jackson-core.version}</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>${jackson-core.version}</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>${jackson-core.version}</version>
        </dependency>

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.time.DateUtils;
 
import java.io.IOException;
import java.text.ParseException;
import java.util.Date;
 
/**
 * 自定义Jackson反序列化日期类型时应用的类型转换器,一般用于@RequestBody接受参数时使用
 *  次类是借用网上别的人的，增加了一个日期格式化的类型
 */
public class DateJacksonConverter extends JsonDeserializer<Date> {
    //此处尤为重要，请查找自己控制台报错的日期格式化类型是啥样的
    //我的是2020-04-29T16:23:44.999Z 所以我在下面的数组中添加了 "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'" 格式；如果下面数组中没有你要的格式化类型，其他的可自行根据自己的情况去添加即可
    private static String[] pattern =
            new String[]{"yyyy-MM-dd", "yyyy-MM-dd HH:mm", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm:ss.S",
                    "yyyy.MM.dd", "yyyy.MM.dd HH:mm", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm:ss.S",
                    "yyyy/MM/dd", "yyyy/MM/dd HH:mm", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm:ss.S", "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"};
 
    @Override
    public Date deserialize(JsonParser p, DeserializationContext ctxt) throws IOException, JsonProcessingException {
 
        Date targetDate = null;
        String originDate = p.getText();
        if (StringUtils.isNotEmpty(originDate)) {
            try {
                long longDate = Long.valueOf(originDate.trim());
                targetDate = new Date(longDate);
            } catch (NumberFormatException e) {
                try {
                    targetDate = DateUtils.parseDate(originDate, DateJacksonConverter.pattern);
                } catch (ParseException pe) {
                    throw new IOException(String.format(
                            "'%s' can not convert to type 'java.util.Date',just support timestamp(type of long) and following date format(%s)",
                            originDate,
                            StringUtils.join(pattern, ",")));
                }
            }
        } 
        return targetDate;
    } 
    @Override
    public Class<?> handledType() {
        return Date.class;
    }
}

import com.fasterxml.jackson.databind.annotation.JsonDeserialize; 

@JsonDeserialize(using=DateJacksonConverter.class)
private Date startDate;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
 
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fx.base.serializer.DateJacksonConverter;
 
@Configuration
public class ConverterConfig {
    @Bean
    public DateJacksonConverter dateJacksonConverter() {
        return new DateJacksonConverter();
    }
 
    @Bean
    public Jackson2ObjectMapperFactoryBean jackson2ObjectMapperFactoryBean(
            @Autowired
                    DateJacksonConverter dateJacksonConverter) {
        Jackson2ObjectMapperFactoryBean jackson2ObjectMapperFactoryBean = new Jackson2ObjectMapperFactoryBean();
 
        jackson2ObjectMapperFactoryBean.setDeserializers(dateJacksonConverter);
        return jackson2ObjectMapperFactoryBean;
    }
 
    @Bean
    public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter(
            @Autowired
                    ObjectMapper objectMapper) {
        MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter =
                new MappingJackson2HttpMessageConverter();
        mappingJackson2HttpMessageConverter.setObjectMapper(objectMapper);
        return mappingJackson2HttpMessageConverter;
    }
}

    import org.springframework.format.annotation.DateTimeFormat;
    /**
     * 前台传后台时, 字符串自动封装成日期
     */
    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private Date birth;

    import com.fasterxml.jackson.annotation.JsonFormat;
    /**
     * 后台返给前台时, 日期自动格式化
     */
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private Date birth;