프로젝트에는 생성 시간, 업데이트 시간 등과 같은 프런트엔드 및 백엔드 시간 변환 장면이 종종 있습니다. 일반적으로 프론트엔드와 백엔드에서는 타임스탬프나 연도, 월, 일 형식을 사용하여 전송합니다.
신청할 수 있는 기회가 주어졌습니다.
두 가지 시나리오(다른 콘텐츠 유형에 따라)로 구성해야 합니다:
1.application/x-www-form-urlencoded 및 multipart/form-data
이 문서 상황은 다음과 같이 기록됩니다: @RequestBody를 사용하지 않음
2.application/json
즉: @RequestBody 인터페이스를 사용함
이 상황은 다음과 같이 기록됩니다: @RequestBody를 사용하여
Remarks
어떤 사람들은 다음과 같이 구성할 수 있다고 말합니다:
spring:
jackson:
date-format: yyyy-MM-dd HH:mm:ss
time-zone: GMT+8
serialization:
write-dates-as-timestamps: false
이 구성은 Date에만 적용 가능하며 LocalDateTime 등에는 적용되지 않습니다.
날짜 직렬화/역직렬화는 "2020-08-19T16:30:18.823+00:00" 형식을 사용합니다.
구성 클래스
package com.example.config; import org.springframework.web.bind.WebDataBinder; import org.springframework.web.bind.annotation.ControllerAdvice; import org.springframework.web.bind.annotation.InitBinder; import java.beans.PropertyEditorSupport; import java.time.LocalDate; import java.time.LocalDateTime; import java.time.LocalTime; import java.time.format.DateTimeFormatter; @ControllerAdvice public class LocalDateTimeAdvice { @InitBinder protected void initBinder(WebDataBinder binder) { binder.registerCustomEditor(LocalDateTime.class, new PropertyEditorSupport() { @Override public void setAsText(String text) throws IllegalArgumentException { setValue(LocalDateTime.parse(text, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"))); } }); binder.registerCustomEditor(LocalDate.class, new PropertyEditorSupport() { @Override public void setAsText(String text) throws IllegalArgumentException { setValue(LocalDate.parse(text, DateTimeFormatter.ofPattern("yyyy-MM-dd"))); } }); binder.registerCustomEditor(LocalTime.class, new PropertyEditorSupport() { @Override public void setAsText(String text) throws IllegalArgumentException { setValue(LocalTime.parse(text, DateTimeFormatter.ofPattern("HH:mm:ss"))); } }); } }
Entity
package com.example.business.entity; import lombok.AllArgsConstructor; import lombok.Data; import java.time.LocalDateTime; @Data @AllArgsConstructor public class User { private Long id; private String userName; private LocalDateTime createTime; }
Controller
package com.example.business.controller; import com.example.business.entity.User; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("user") public class UserController { @PostMapping("save") public User save(User user) { System.out.println("保存用户:" + user); return user; } }
Test
우체부 방문: http://localhost: 8080/user/save?userName=Tony&createTime=2021-09-16 21:13:21
postman 결과:
백엔드 결과:
구현 org.springframework.core.convert.converter.Converter, 사용자 정의 매개변수 변환기.
구성 클래스
package com.example.config; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.core.convert.converter.Converter; import java.time.LocalDateTime; import java.time.format.DateTimeFormatter; @Configuration public class LocalDateTimeConfig { @Bean public Converter<String, LocalDateTime> localDateTimeConverter() { return new LocalDateTimeConverter(); } public static class LocalDateTimeConverter implements Converter<String, LocalDateTime> { @Override public LocalDateTime convert(String s) { return LocalDateTime.parse(s, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")); } } }
Entity
package com.example.business.entity; import lombok.AllArgsConstructor; import lombok.Data; import java.time.LocalDateTime; @Data @AllArgsConstructor public class User { private Long id; private String userName; private LocalDateTime createTime; }
Controller
package com.example.business.controller; import com.example.business.entity.User; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("user") public class UserController { @PostMapping("save") public User save(User user) { System.out.println("保存用户:" + user); return user; } }
Test
postman 방문: http://localhost:8080/user/save?userName=Tony&createTime=20 21 -09- 16 21:13:21
postman 결과:
백엔드 결과
이 방법은 ObjectMapper만 구성합니다. 그 예, 엔터티는 @JsonFormat을 추가할 필요가 없습니다.
구성 클래스
package com.knife.example.config; import com.fasterxml.jackson.core.JsonParser; import com.fasterxml.jackson.databind.DeserializationContext; import com.fasterxml.jackson.databind.MapperFeature; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.deser.std.DateDeserializers; import com.fasterxml.jackson.databind.ser.std.DateSerializer; 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 lombok.SneakyThrows; import org.springframework.boot.autoconfigure.jackson.JacksonProperties; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder; import java.text.SimpleDateFormat; import java.time.LocalDate; import java.time.LocalDateTime; import java.time.LocalTime; import java.time.format.DateTimeFormatter; import java.util.Date; @Configuration public class JacksonConfig { @Bean public ObjectMapper objectMapper(Jackson2ObjectMapperBuilder builder, JacksonProperties jacksonProperties) { ObjectMapper objectMapper = builder.build(); // 把“忽略重复的模块注册”禁用,否则下面的注册不生效 objectMapper.disable(MapperFeature.IGNORE_DUPLICATE_MODULE_REGISTRATIONS); objectMapper.registerModule(configTimeModule()); // 重新设置为生效,避免被其他地方覆盖 objectMapper.enable(MapperFeature.IGNORE_DUPLICATE_MODULE_REGISTRATIONS); return objectMapper; } private JavaTimeModule configTimeModule() { JavaTimeModule javaTimeModule = new JavaTimeModule(); String localDateTimeFormat = "yyyy-MM-dd HH:mm:ss"; String localDateFormat = "yyyy-MM-dd"; String localTimeFormat = "HH:mm:ss"; String dateFormat = "yyyy-MM-dd HH:mm:ss"; // 序列化 javaTimeModule.addSerializer( LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(localDateTimeFormat))); javaTimeModule.addSerializer( LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern(localDateFormat))); javaTimeModule.addSerializer( LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern(localTimeFormat))); javaTimeModule.addSerializer( Date.class, new DateSerializer(false, new SimpleDateFormat(dateFormat))); // 反序列化 javaTimeModule.addDeserializer( LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(localDateTimeFormat))); javaTimeModule.addDeserializer( LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern(localDateFormat))); javaTimeModule.addDeserializer( LocalTime.class, new LocalTimeDeserializer(DateTimeFormatter.ofPattern(localTimeFormat))); javaTimeModule.addDeserializer(Date.class, new DateDeserializers.DateDeserializer(){ @SneakyThrows @Override public Date deserialize(JsonParser jsonParser, DeserializationContext dc){ String text = jsonParser.getText().trim(); SimpleDateFormat sdf = new SimpleDateFormat(dateFormat); return sdf.parse(text); } }); return javaTimeModule; } }
Entity
package com.example.business.entity; import lombok.Data; import java.time.LocalDateTime; @Data public class User { private Long id; private String userName; private LocalDateTime createTime; }
Controller
package com.example.business.controller; import com.example.business.entity.User; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("user") public class UserController { @PostMapping("save") public User save(@RequestBody User user) { System.out.println("保存用户:" + user); return user; } }
Testing
백엔드 결과
사용자 저장: ID=null, userName=Tony, createTime= 2021 -09-16T21:13:21)
이 방법은 ObjectMapper를 구성해야 하며, Entity도 @JsonFormat을 추가해야 합니다.
구성 클래스
import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.datatype.jdk8.Jdk8Module; import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule; import com.fasterxml.jackson.module.paramnames.ParameterNamesModule; import org.springframework.boot.autoconfigure.jackson.JacksonProperties; import org.springframework.boot.jackson.JsonComponent; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder; @Configuration public class JacksonConfig { @Bean public ObjectMapper serializingObjectMapper(Jackson2ObjectMapperBuilder builder, JacksonProperties jacksonProperties) { ObjectMapper objectMapper = builder.build(); // 把“忽略重复的模块注册”禁用,否则下面的注册不生效 objectMapper.disable(MapperFeature.IGNORE_DUPLICATE_MODULE_REGISTRATIONS); // 自动扫描并注册相关模块 objectMapper.findAndRegisterModules(); // 手动注册相关模块 // objectMapper.registerModule(new ParameterNamesModule()); // objectMapper.registerModule(new Jdk8Module()); // objectMapper.registerModule(new JavaTimeModule()); // 重新设置为生效,避免被其他地方覆盖 objectMapper.enable(MapperFeature.IGNORE_DUPLICATE_MODULE_REGISTRATIONS); return objectMapper; } }
Entity
package com.example.business.entity; import com.fasterxml.jackson.annotation.JsonFormat; import lombok.Data; import java.time.LocalDateTime; @Data public class User { private Long id; private String userName; @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8") private LocalDateTime createTime; }
Controller
package com.example.business.controller; import com.example.business.entity.User; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("user") public class UserController { @PostMapping("save") public User save(@RequestBody User user) { System.out.println("保存用户:" + user); return user; } }
Testing
백엔드 결과
사용자 저장: ID=null, userName=Tony, createTime= 2021 -09-16T21:13:21)
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 org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import java.time.LocalDate; import java.time.LocalDateTime; import java.time.LocalTime; import java.time.format.DateTimeFormatter; @Configuration public class LocalDateTimeConfig { private final String localDateTimeFormat = "yyyy-MM-dd HH:mm:ss"; private final String localDateFormat = "yyyy-MM-dd"; private final String localTimeFormat = "HH:mm:ss"; @Bean public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() { return builder -> { // 反序列化(接收数据) builder.deserializerByType(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(localDateTimeFormat))); builder.deserializerByType(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern(localDateFormat))); builder.deserializerByType(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatter.ofPattern(localTimeFormat))); // 序列化(返回数据) builder.serializerByType(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(localDateTimeFormat))); builder.serializerByType(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern(localDateFormat))); builder.serializerByType(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern(localTimeFormat))); }; } }
위 내용은 SpringBoot LocalDateTime 형식 변환 방법은 무엇입니까?의 상세 내용입니다. 자세한 내용은 PHP 중국어 웹사이트의 기타 관련 기사를 참조하세요!