Spring Boot2.0中使用json对LocalDateT

需求

需求主要是将前端通过json传上来的时间，通过@RequestBody自动绑定到Bean里的LocalDateTime成员上。

绑定方法

使用@JsonFormat 注解，示例：@JsonFormat(pattern="yyyy-MM-dd HH:mm:ss")

解决方法

添加Jackson对Java Time的支持后，就能解决这个问题。
在pom.xml中添加：

<dependency>
    <groupId>com.fasterxml.jackson.module</groupId>
    <artifactId>jackson-module-parameter-names</artifactId>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.datatype</groupId>
    <artifactId>jackson-datatype-jdk8</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-jsr310</artifactId>
</dependency>

添加JavaConfig，自动扫描新添加的模块：

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.fasterxml.jackson.databind.ObjectMapper;

@Configuration
public class JacksonConfig {

    @Bean
    public ObjectMapper serializingObjectMapper() {
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.findAndRegisterModules();
        return objectMapper;
    }
}

示例

controller

@GetMapping()
 public List<HiCourseSchedule> findAll(@ApiParam(name = "startDate", value = "上课时间", required = false)
                                          @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") LocalDateTime startDate,
                                          @ApiParam(name = "endDate", value = "下课时间", required = false)
                                          @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") LocalDateTime endDate) {

entity

@ApiModelProperty(value = "上课时间")
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private LocalDateTime classHourStart;

    @ApiModelProperty(value = "下课时间")
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private LocalDateTime classHourDown;