Springboot配置全域性日期轉換器
阿新 • • 發佈：2020-08-20
1.Json傳參方式
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package com.example.config;
import java.text.FieldPosition;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;import java.util.Date;
import com.fasterxml.jackson.databind.util.StdDateFormat;
import org.apache.commons.lang3.StringUtils;
/**
* JSON形式的全域性時間型別轉換器
*/
publicclassCustomDateFormat extends StdDateFormat {
privatestaticfinallongserialVersionUID = -3201781773655300201L;
publicstaticfinal CustomDateFormat instance =newCustomDateFormat();
@Override
/**
* 只要覆蓋parse(String)這個方法即可
*/
publicDate parse(String dateStr, ParsePosition pos) {
returngetDate(dateStr, pos);
}
@Override
publicDate parse(String dateStr) {
ParsePosition pos =newParsePosition(0);
returngetDate(dateStr, pos);
}
privateDate getDate(String dateStr, ParsePosition pos) {SimpleDateFormat sdf =null;
if(StringUtils.isBlank(dateStr)) {
returnnull;
}elseif(dateStr.matches("^\\d{4}-\\d{1,2}$")) {
sdf =newSimpleDateFormat("yyyy-MM");
returnsdf.parse(dateStr, pos);
}elseif(dateStr.matches("^\\d{4}-\\d{1,2}-\\d{1,2}$")) {
sdf =newSimpleDateFormat("yyyy-MM-dd");
returnsdf.parse(dateStr, pos);
}elseif(dateStr.matches("^\\d{4}-\\d{1,2}-\\d{1,2} {1}\\d{1,2}:\\d{1,2}$")) {
sdf =newSimpleDateFormat("yyyy-MM-dd HH:mm");
returnsdf.parse(dateStr, pos);
}elseif(dateStr.matches("^\\d{4}-\\d{1,2}-\\d{1,2} {1}\\d{1,2}:\\d{1,2}:\\d{1,2}$")) {
sdf =newSimpleDateFormat("yyyy-MM-dd HH:mm:ss");
returnsdf.parse(dateStr, pos);
}elseif(dateStr.length() == 23) {
sdf =newSimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
returnsdf.parse(dateStr, pos);
}
returnsuper.parse(dateStr, pos);
}
@Override
publicStringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition){
SimpleDateFormat sdf =newSimpleDateFormat("yyyy-MM-dd HH:mm:ss");
returnsdf.format(date, toAppendTo, fieldPosition);
}
@Override
publicCustomDateFormat clone() {
returnnewCustomDateFormat();
}
}
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2.表單傳參方式
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package com.example.config;
import org.springframework.core.convert.converter.Converter;
import org.springframework.stereotype.Component;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
/**
* 表單形式的全域性時間型別轉換器
*/
@Component
publicclassDateConverter implements Converter<String, Date> {
privatestaticfinal List<String> formarts =newArrayList<>(4);
static{
formarts.add("yyyy-MM");
formarts.add("yyyy-MM-dd");
formarts.add("yyyy-MM-dd HH:mm");
formarts.add("yyyy-MM-dd HH:mm:ss");
}
@Override
publicDate convert(String source) {
String value = source.trim();
if("".equals(value)) {
returnnull;
}
if(source.matches("^\\d{4}-\\d{1,2}$")) {
returnparseDate(source, formarts.get(0));
}elseif(source.matches("^\\d{4}-\\d{1,2}-\\d{1,2}$")) {
returnparseDate(source, formarts.get(1));
}elseif(source.matches("^\\d{4}-\\d{1,2}-\\d{1,2} {1}\\d{1,2}:\\d{1,2}$")) {
returnparseDate(source, formarts.get(2));
}elseif(source.matches("^\\d{4}-\\d{1,2}-\\d{1,2} {1}\\d{1,2}:\\d{1,2}:\\d{1,2}$")) {
returnparseDate(source, formarts.get(3));
}else{
thrownewIllegalArgumentException("Invalid boolean value '"+ source +"'");
}
}
/**
* 格式化日期
*
* @param dateStr String 字元型日期
* @param format String 格式
* @return Date 日期
*/
privateDate parseDate(String dateStr, String format) {
Date date =null;
try{
DateFormat dateFormat =newSimpleDateFormat(format);
date = dateFormat.parse(dateStr);
}catch(Exception e) {
e.printStackTrace();
}
returndate;
}
}
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3.配置
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package com.example.config;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.support.ConversionServiceFactoryBean;
import org.springframework.core.convert.ConversionService;
import org.springframework.core.convert.converter.Converter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.util.AntPathMatcher;
import org.springframework.web.servlet.config.annotation.PathMatchConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
@Configuration
publicclassWebMvcConfig implements WebMvcConfigurer {
/**
* 重寫url路徑匹配(忽略大小寫敏感)
*/
@Override
publicvoidconfigurePathMatch(PathMatchConfigurer configurer) {
AntPathMatcher antPathMatcher =newAntPathMatcher();
antPathMatcher.setCaseSensitive(false);
}
/**
* JSON全域性日期轉換器
*/
@Bean
publicMappingJackson2HttpMessageConverter getMappingJackson2HttpMessageConverter() {
MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter =newMappingJackson2HttpMessageConverter();
//設定日期格式
ObjectMapper objectMapper =newObjectMapper();
objectMapper.setDateFormat(CustomDateFormat.instance);
objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
mappingJackson2HttpMessageConverter.setObjectMapper(objectMapper);
//設定中文編碼格式
List<MediaType> list =newArrayList<MediaType>();
list.add(MediaType.APPLICATION_JSON_UTF8);
mappingJackson2HttpMessageConverter.setSupportedMediaTypes(list);
returnmappingJackson2HttpMessageConverter;
}
@Override
publicvoidconfigureMessageConverters(List<HttpMessageConverter<?>> converters){
converters.add(getMappingJackson2HttpMessageConverter());
}
/**
* 表單全域性日期轉換器
*/
@Bean
@Autowired
publicConversionService getConversionService(DateConverter dateConverter){
ConversionServiceFactoryBean factoryBean =newConversionServiceFactoryBean();
Set<Converter> converters =newHashSet<>();
converters.add(dateConverter);
factoryBean.setConverters(converters);
returnfactoryBean.getObject();
}
}
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從此不再糾結用@DateTimeFormat(patten = "yyyyy-MM-dd")還是@DateTimeForm