Java 8时间日期API（LocalDate等）的序列化应用

一 点睛

LocalDate、LocalTime、LocalDateTime是Java 8开始提供的时间日期API，主要用来优化Java 8以前对于时间日期的处理操作。然而，我们在使用Spring Boot，往往会发现使用请求参数或返回结果中有LocalDate、LocalTime、LocalDateTime的时候会发生各种问题。下面说说解决方案。

二 代码

1 新建依赖

    
        org.springframework.boot
        spring-boot-starter-test
        test
    

    
        org.springframework.boot
        spring-boot-starter-web
    
    
    
        com.fasterxml.jackson.datatype
        jackson-datatype-jsr310
    

    
        org.projectlombok
        lombok
        1.16.20
    

2 主类

package com.didispace;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

import java.time.LocalDate;


@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    @RestController
    class HelloController {

        @PostMapping("/user")
        public UserDto user(@RequestBody UserDto userDto) throws Exception {
            return userDto;
        }

    }

    @Data
    @NoArgsConstructor
    @AllArgsConstructor
    static class UserDto {

        private String userName;
        private LocalDate birthday;

    }
    //应用主类中增加这个序列化模块，并禁用对日期以时间戳方式输出的特性
    @Bean
    public ObjectMapper serializingObjectMapper() {
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
        objectMapper.registerModule(new JavaTimeModule());
        return objectMapper;
    }

}

三 测试

四  参考

http://blog.didispace.com/Spring-Boot-And-Feign-Use-localdate/