使用Spring注解
使用spring自带注解@DateTimeFormat(pattern = "yyyy-MM-dd"),如下:
@DateTimeFormat(pattern = "yyyy-MM-dd") private Date startDate;
如果使用了自定义参数转化器,Spring会优先使用该方式进行处理,即Spring注解不生效。
使用ControllerAdvice配合initBinder
@ControllerAdvice
public class GlobalExceptionHandler {
@InitBinder
protected void initBinder(WebDataBinder binder) {
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(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(LocalTime.class, new PropertyEditorSupport() {
@Override
public void setAsText(String text) throws IllegalArgumentException {
setValue(LocalTime.parse(text, DateTimeFormatter.ofPattern("HH:mm:ss")));
}
});
}
}
从名字就可以看出来,这是在controller做环切(这里面还可以全局异常捕获),在参数进入handler之前进行转换;转换为我们相应的对象。
JSON入参及返回值全局处理
请求类型为:post,content-type=application/json, 后台用@RequestBody接收,默认接收及返回值格式为: yyyy-MM-dd HH:mm:ss
修改 application.yml 文件
在application.propertities文件中增加如下内容:
spring:
jackson:
date-format: yyyy-MM-dd HH:mm:ss
time-zone: GMT+8
-
支持(content-type=application/json)请求中格式为 yyyy-MM-dd HH:mm:ss的字符串,后台用@RequestBody接收,及返回值date转为yyyy-MM-dd HH:mm:ss格式string;
不支持(content-type=application/json)请求中yyyy-MM-dd等类型的字符串转为date;
不支持java8日期api;
利用Jackson的JSON序列化和反序列化
@Configuration
public class JacksonConfig {
/** 默认日期时间格式 */
public static final String DEFAULT_DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
/** 默认日期格式 */
public static final String DEFAULT_DATE_FORMAT = "yyyy-MM-dd";
/** 默认时间格式 */
public static final String DEFAULT_TIME_FORMAT = "HH:mm:ss";
@Bean
public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() {
MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
ObjectMapper objectMapper = new ObjectMapper();
// 忽略json字符串中不识别的属性
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
// 忽略无法转换的对象
objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
// PrettyPrinter 格式化输出
objectMapper.configure(SerializationFeature.INDENT_OUTPUT, true);
// NULL不参与序列化
objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
// 指定时区
objectMapper.setTimeZone(TimeZone.getTimeZone("GMT+8:00"));
// 日期类型字符串处理
objectMapper.setDateFormat(new SimpleDateFormat(DEFAULT_DATE_TIME_FORMAT));
// java8日期日期处理
JavaTimeModule javaTimeModule = new JavaTimeModule();
javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)));
javaTimeModule.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)));
javaTimeModule.addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)));
javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)));
javaTimeModule.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)));
javaTimeModule.addDeserializer(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)));
objectMapper.registerModule(javaTimeModule);
converter.setObjectMapper(objectMapper);
return converter;
}
}










