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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
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--该模块中封装对Java 8的时间日期API序列化的实现-->
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-jsr310</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.20</version>
</dependency>
</dependencies>
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/