springboot全局日期格式化的两种方式

spring:
 jackson:
  #参数意义：
  #JsonInclude.Include.ALWAYS    默认
  #JsonInclude.Include.NON_DEFAULT  属性为默认值不序列化
  #JsonInclude.Include.NON_EMPTY   属性为 空（””） 或者为 NULL 都不序列化
  #JsonInclude.Include.NON_NULL   属性为NULL 不序列化
  default-property-inclusion: ALWAYS
  time-zone: GMT+8
  date-format: yyyy-MM-dd HH:mm:ss

#jackson相关配置
spring.jackson.date-format = yyyy-MM-dd HH:mm:ss
#时区必须要设置
spring.jackson.time-zone= GMT+8
#ALWAYS的意思是即时属性为null，仍然也会输出这个key，对应yml里面的注释里面的类型
spring.jackson.default-property-inclusion=ALWAYS

import org.apache.commons.lang.StringUtils;
import org.springframework.core.convert.converter.Converter;
import org.springframework.stereotype.Component;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

/**
 * 全局handler前日期统一处理
 * @author 
 * @date 2019-06-03
 */
@Component
public class DateConverterConfig implements Converter<String, Date> {

  private static final List<String> formarts = new ArrayList<>(4);

  private static final String YYYY_MM = "yyyy-MM";
  private static final String YYYY_MM_DD = "yyyy-MM-dd";
  private static final String YYYY_MM_DD_HH_MM = "yyyy-MM-dd HH:mm";
  private static final String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

  static{
    formarts.add(YYYY_MM);
    formarts.add(YYYY_MM_DD);
    formarts.add(YYYY_MM_DD_HH_MM);
    formarts.add(YYYY_MM_DD_HH_MM_SS);
  }

  @Override
  public Date convert(String source) {
    if (StringUtils.isBlank(source)) {
      return null;
    }
    source = source.trim();
    if(source.matches("^\\d{4}-\\d{1,2}$")){
      return parseDate(source, formarts.get(0));
    }else if(source.matches("^\\d{4}-\\d{1,2}-\\d{1,2}$")){
      return parseDate(source, formarts.get(1));
    }else if(source.matches("^\\d{4}-\\d{1,2}-\\d{1,2} {1}\\d{1,2}:\\d{1,2}$")){
      return parseDate(source, formarts.get(2));
    }else if(source.matches("^\\d{4}-\\d{1,2}-\\d{1,2} {1}\\d{1,2}:\\d{1,2}:\\d{1,2}$")){
      return parseDate(source, formarts.get(3));
    }else {
      throw new IllegalArgumentException("Invalid false value '" + source + "'");
    }
  }

  /**
   * 格式化日期
   * @param dateStr String 字符型日期
   * @param format String 格式
   * @return Date 日期
   */
  private Date parseDate(String dateStr, String format) {
    Date date;
    try {
      DateFormat dateFormat = new SimpleDateFormat(format);
      date = dateFormat.parse(dateStr);
    } catch (Exception e) {
      throw new IllegalArgumentException(e.getLocalizedMessage());
    }
    return date;
  }

}

import org.springframework.context.annotation.Configuration;
import org.springframework.format.FormatterRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {

  /**
   * 添加自定义的Converters和Formatters.
   */
  @Override
  protected void addFormatters(FormatterRegistry registry) {
    registry.addConverter(new DateConverterConfig());
  }

  /**
   * 如果继承了WebMvcConfigurationSupport，则在yml中配置的相关内容会失效。 需要重新指定静态资源
   *
   * @param registry
   */
  @Override
  public void addResourceHandlers(ResourceHandlerRegistry registry) {
    registry.addResourceHandler("/**")
        .addResourceLocations("classpath:/static/")
        .addResourceLocations("classpath:/resources/")
        .addResourceLocations("classpath:/META-INF/resources/");

    super.addResourceHandlers(registry);
  }

}