自定义反序列化类将LocalDate时间格式转为 LocalDateTime

本文主要是介绍自定义反序列化类将LocalDate时间格式转为 LocalDateTime，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

从前端接收数据反序列化成类,如果时间格式不一致可能会反序列化失败

public class StorageDTO implements Serializable {private static final long serialVersionUID = 1L;......//实体类中格式为@JsonFormat(pattern = "yyyy-MM-dd")@JsonDeserialize(using = CustomLocalDateTimeDeserializer.class)@ApiModelProperty("产生时间")private LocalDateTime generateTime;}

//自定义反序列化类
package com......config;import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;import java.io.IOException;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;public class CustomLocalDateTimeDeserializer extends LocalDateTimeDeserializer {private static final long serialVersionUID = 1L;private static final DateTimeFormatter DEFAULT_FORMATTER = DateTimeFormatter.ISO_LOCAL_DATE_TIME;private CustomLocalDateTimeDeserializer() {super(DEFAULT_FORMATTER);}public CustomLocalDateTimeDeserializer(DateTimeFormatter formatter) {super(formatter);}@Overrideprotected LocalDateTimeDeserializer withDateFormat(DateTimeFormatter formatter) {return new CustomLocalDateTimeDeserializer(formatter);}@Overridepublic LocalDateTime deserialize(JsonParser p, DeserializationContext ctxt) throws IOException, JsonProcessingException {LocalDate localDate = new LocalDateDeserializer(_formatter).deserialize(p, ctxt);LocalDateTime localDateTime = localDate.atStartOfDay();return localDateTime;}
}

后端统一返回格式化后的日期

package com.......config;import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalTimeSerializer;
import com.......filters.ReHttpServletRequestFilter;
import com.......interceptor.DeviceHandlerInterceptor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.util.List;
import java.util.TimeZone;/*** 通用配置** @author balance*/
@Configuration
public class WebMvcConfig implements WebMvcConfigurer {public static final String DEFAULT_DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss";//默认日期时间格式public static final String DEFAULT_DATE_FORMAT = "yyyy-MM-dd";//默认日期格式public static final String DEFAULT_TIME_FORMAT = "HH:mm:ss";//默认时间格式@Autowiredprivate DeviceHandlerInterceptor deviceHandlerInterceptor;/*** 自定义拦截规则*/@Overridepublic void addInterceptors(InterceptorRegistry registry) {registry.addInterceptor(deviceHandlerInterceptor).addPathPatterns("/test/**").excludePathPatterns("/testPage/**");//设备端请求拦截器}@Beanpublic FilterRegistrationBean httpServletRequestReplacedRegistration() {FilterRegistrationBean registration = new FilterRegistrationBean();registration.setFilter(new ReHttpServletRequestFilter());registration.addUrlPatterns("/*");registration.addInitParameter("paramName", "paramValue");registration.setName("reHttpServletRequestFilter");registration.setOrder(1);return registration;}/*** 跨域配置*/@Beanpublic CorsFilter corsFilter() {CorsConfiguration config = new CorsConfiguration();config.setAllowCredentials(true);// 设置访问源地址config.addAllowedOriginPattern("*");// 设置访问源请求头config.addAllowedHeader("*");// 设置访问源请求方法config.addAllowedMethod("*");// 有效期 1800秒config.setMaxAge(1800L);// 添加映射路径，拦截一切请求UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();source.registerCorsConfiguration("/**", config);// 返回新的CorsFilterreturn new CorsFilter(source);}/*** 配置全局localDateTime输出格式* @return*/@Beanpublic MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() {MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();ObjectMapper objectMapper = new ObjectMapper();objectMapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); 忽略json字符串中不识别的属性objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);// 忽略无法转换的对象objectMapper.configure(SerializationFeature.INDENT_OUTPUT, true); // PrettyPrinter 格式化输出objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);// NULL不参与序列化objectMapper.setTimeZone(TimeZone.getTimeZone("GMT+8:00"));// 指定时区objectMapper.setDateFormat(new SimpleDateFormat(DEFAULT_DATE_TIME_FORMAT)); // 日期类型字符串处理// java8日期处理JavaTimeModule javaTimeModule = new JavaTimeModule();//序列化规则javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)));javaTimeModule.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)));javaTimeModule.addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)));//反序列化规则javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)));javaTimeModule.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)));javaTimeModule.addDeserializer(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)));objectMapper.registerModule(javaTimeModule);mappingJackson2HttpMessageConverter.setObjectMapper(objectMapper);return mappingJackson2HttpMessageConverter;}@Overridepublic void extendMessageConverters(List<HttpMessageConverter<?>> converters) {converters.add(mappingJackson2HttpMessageConverter());}}