深圳企业网站建设费用明细,深圳龙岗网站制作,加盟装修公司怎么合作,深圳市福田区公司一. 场景描述
在进行前后端交互时#xff0c;发现实体的LocalDateTime返回的格式是这样的#xff1a; 这不符合我们日常习惯的格式 “年-月-日 时:分:秒”#xff0c;于是上网学习了前辈 励碼的文章SSM项目中LocalDateTime格式化最佳实践_localdatetime 格式化-CSDN博客解决…一. 场景描述
在进行前后端交互时发现实体的LocalDateTime返回的格式是这样的 这不符合我们日常习惯的格式 “年-月-日 时:分:秒”于是上网学习了前辈 励碼的文章SSM项目中LocalDateTime格式化最佳实践_localdatetime 格式化-CSDN博客解决了问题。
二. 解决方案
用到的和 jackson 相关的依赖有
!-- Json序列化ObjectMapper --
dependencygroupIdcom.fasterxml.jackson.core/groupIdartifactIdjackson-databind/artifactIdversion2.18.1/version
/dependency
!--用于适配JAVA的时间类型比如LocalDateTime--
!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.datatype/jackson-datatype-jsr310 --
dependencygroupIdcom.fasterxml.jackson.datatype/groupId artifactIdjackson-datatype-jsr310/artifactIdversion2.18.2/version
/dependency
2.1 创建配置类
千万别忘了注册 JavaTimeModule()否则会报错转换不了 LocalDateTime类型
/*** author yamu* version 1.0* description 配置响应的 Json 字符串的时间格式* date 2025/1/24 9:54*/
Configuration
public class JacksonConfig {public static final String DEFAULT_DATETIME_FORMAT yyyy-MM-dd HH:mm:ss;public static final String DEFAULT_DATE_FORMAT yyyy-MM-dd;public static final String DEFAULT_TIME_FORMAT HH:mm:ss;Bean(name myObjectMapper)public ObjectMapper myObjectMapper() {ObjectMapper objectMapper new ObjectMapper();//适用于java8的时间模块JavaTimeModule javaTimeModule new JavaTimeModule();//年-月-日 时:分:秒DateTimeFormatter localDateTimeFormatter DateTimeFormatter.ofPattern(DEFAULT_DATETIME_FORMAT);javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(localDateTimeFormatter));javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(localDateTimeFormatter));//年-月-日DateTimeFormatter dateFormatter DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT);javaTimeModule.addSerializer(LocalDate.class, new LocalDateSerializer(dateFormatter));javaTimeModule.addDeserializer(LocalDate.class, new LocalDateDeserializer(dateFormatter));//时:分:秒DateTimeFormatter timeFormatter DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT);javaTimeModule.addSerializer(LocalTime.class, new LocalTimeSerializer(timeFormatter));javaTimeModule.addDeserializer(LocalTime.class, new LocalTimeDeserializer(timeFormatter));//注册时间模块(不注册的话会报错Java 8 date/time type java.time.LocalDateTime not supported by default: add Module com.fasterxml.jackson.datatype:jackson-datatype-jsr310 to enable handling... )objectMapper.registerModule(javaTimeModule);// 配置其他特性objectMapper.setTimeZone(TimeZone.getTimeZone(GMT8));//设置东八区return objectMapper;}
}
2.2 在响应类中注册
这里有个注意点由于我的响应类是通过R.success(T)去返回给前端的所以自定义的ObjectMapper需要静态注入但是Autowired是不支持自动静态注入的所以我定义了一个工具类去进行注入。
/*** description: 自定义消息响应类* author yamu* date 2024/11/12 11:22* version 1.0*/
Data
public class RT {private Integer code; //0失败1成功private String message; //错误信息private T data; //数据public static ObjectMapper objectMapper;//静态代码块注入JacksonConfig定义的objectMapperstatic{objectMapper ObjectMapperUtil.getObjectMapper();}/*** description: 带返回值成功* param: object* returns: RT* author yamu* date: 2024/11/12 11:24*/public static T String success(T object) {RT r new RT();r.data object;r.code 1;try {return objectMapper.writeValueAsString(r);} catch (JsonProcessingException e) {throw new RuntimeException(e);}}
}2.3 定义工具类静态注入ObjectMapper
/*** author yamu* version 1.0* description 获取自定义序列化器的 ObjectMapper* date 2025/1/24 17:06*/
Component
public class ObjectMapperUtil implements ApplicationContextAware {private static ApplicationContext context;Overridepublic void setApplicationContext(ApplicationContext applicationContext) throws BeansException {context applicationContext;}public static ObjectMapper getObjectMapper() {return (ObjectMapper) context.getBean(myObjectMapper);}
} public static ObjectMapper getObjectMapper() {return (ObjectMapper) context.getBean(myObjectMapper);}
} 结果如下
