我有序列化为JSON数组而不是String的Spring Boot应用程序和LocalDateTime属性。
正如我在网络上搜索时所发现的,我只需要在 application.properties
中进行设置spring.jackson.serialization.write-dates-as-timestamps=false
我还尝试将 jackson-datatype-jsr310 设置为依赖项,但也没有运气
我也尝试添加注释:
@DateTimeFormat(iso = ISO.DATE_TIME)
它也无济于事。
我看到很多人遇到类似的情况,但是他们的解决方案似乎与Spring Boot 1.x有关,而我使用的是2.04
我也使用Lombok,但不确定是否会影响序列化格式。
如何跟踪日期序列化格式并将其固定为ISO日期字符串?
这里是响应示例(开始是LocalDateTime,我想将其作为ISO字符串):
{
"id": 3,
"enabled": true,
"outletId": 5,
"reason": "hello",
"start": [
2019,
9,
10,
10,
42,
11
],
"status": "AVAILABLE"
}
这里是REST控制器方法响应对象:
@Data
@Entity
@Table(indexes = { @Index(columnList = ("outletId"),name="outlet_id_index"),
@Index(columnList = ("start"),name="start_index"),
@Index(columnList = ("outletId, start"),name="outlet_id_start_index")})
public class OutletChron extends BaseEntity {
private Long outletId;
private String reason;
@DateTimeFormat(iso = ISO.DATE_TIME)
private LocalDateTime start;
@Enumerated(EnumType.STRING)
@Column(length = 30)
private OutletStatus status;
}
这是我的POM:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.banquets</groupId>
<artifactId>Banquet</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>Banquet</name>
<description></description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.4.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Finchley.SR1</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-jsr310</artifactId>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.9.2</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.9.2</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<!-- <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web-services</artifactId>
</dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency> -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
更新
我建立了一个新项目进行测试,结果发现 LocalDateTime 映射的默认格式为 String 。配置swagger后,我能够跟踪格式更改。因此,如果没有这种灵活的配置,我将具有String格式:
@Configuration
@EnableSwagger2
public class SwaggerConfig extends WebMvcConfigurationSupport {
@Autowired
ServletContext servletContext;
@Bean
public Docket productApi() {
return new Docket(DocumentationType.SWAGGER_2)
.select()
.apis(RequestHandlerSelectors.basePackage("com.demo"))
.build();
}
@Override
protected void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("swagger-ui.html")
.addResourceLocations("classpath:/META-INF/resources/");
registry.addResourceHandler("/webjars/**")
.addResourceLocations("classpath:/META-INF/resources/webjars/");
}
}
更新,此Swagger配置似乎可行(日期格式为String,我可以通过http://localhost:8000/api/swagger-ui.html访问Swagger UI
@Configuration
@EnableSwagger2
public class SwaggerConfig {
@Bean
public Docket apiDocket() {
return new Docket(DocumentationType.SWAGGER_2)
.select()
.apis(RequestHandlerSelectors.any())
.paths(PathSelectors.any())
.build();
}
}
答案 0 :(得分:3)
对我来说,以下作品:
@JsonFormat(pattern = "dd.MM.yyyy HH:mm")
private LocalDateTime startTime;
这将以字符串格式打印日期,例如就像 11.09.2018 15:44
答案 1 :(得分:3)
Spring boot 2.x不需要导入JSR310规范,因为它现在是spring框架的一部分,因此不需要导入它们,并且字符串格式将自动起作用。
如果您需要覆盖Spring Boot的某些默认配置,则需要实现WebMvcConfigurer
而不是扩展WebMvcConfigurationSupport
。
在您的情况下,如果要将静态文件放在默认资源文件夹中以外的其他位置,则可能需要覆盖addResourceHandlers
并注册路径。
如果默认路径中的资源不是必需的,则只需删除扩展名WebMvcConfigurationSupport
就可以使用默认字符串格式。
更新后的答案:
如果使用WebMvcConfigurationSupport
,则表明它不应该自动配置Spring MVC,这意味着默认设置将不起作用,您必须在此处通过覆盖其支持方法来定义所有内容。因此,请代替WebMvcConfigurationSupport
来实现WebMvcConfigurer
。
这是更新的配置。
@Configuration
@EnableSwagger2
public class SwaggerConfig implements WebMvcConfigurer {
@Bean
public Docket productApi() {
return new Docket(DocumentationType.SWAGGER_2)
.select()
.apis(RequestHandlerSelectors.basePackage("com.demo"))
.build();
}
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("swagger-ui.html")
.addResourceLocations("classpath:/META-INF/resources/");
registry.addResourceHandler("/webjars/**")
.addResourceLocations("classpath:/META-INF/resources/webjars/");
}
}
答案 2 :(得分:0)
手动创建对象映射器
@Bean
@Primary
public ObjectMapper objectMapper() {
ObjectMapper mapper = new ObjectMapper();
JavaTimeModule timeModule = new JavaTimeModule();
mapper.registerModule(timeModule);
mapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
mapper.configure(SerializationFeature.WRITE_DATE_TIMESTAMPS_AS_NANOSECONDS, false);
return mapper;
}