日期轉換器類
package com.b.springboot.util;
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;
//創建一個類型轉化器類
@Component
public class DateConverter implements Converter<string> {
private static final List<string> formarts = new ArrayList<>(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
public Date convert(String source) {
String value = source.trim();
if ("".equals(value)) {
return null;
}
if (source.matches("^\\d{4}-\\d{1,2}$")) {
return parseDate(source, formarts.get(0));
} else if (source.matches("^\\d{4}-\\d{1,2}-\\d{1,2}$")) {
return parseDate(source, formarts.get(1));
} else if (source.matches("^\\d{4}-\\d{1,2}-\\d{1,2} {1}\\d{1,2}:\\d{1,2}$")) {
return parseDate(source, formarts.get(2));
} else if (source.matches("^\\d{4}-\\d{1,2}-\\d{1,2} {1}\\d{1,2}:\\d{1,2}:\\d{1,2}$")) {
return parseDate(source, formarts.get(3));
} else {
throw new IllegalArgumentException("Invalid boolean value '" + source + "'");
}
}
/**
* 格式化日期
*
* @param dateStr String 字符型日期
* @param format String 格式
* @return Date 日期
*/
public Date parseDate(String dateStr, String format) {
Date date = null;
try {
DateFormat dateFormat = new SimpleDateFormat(format);
date = dateFormat.parse(dateStr);
} catch (Exception e) {
}
return date;
}
}
/<string>/<string>
配置類
package com.b.springboot.util;
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.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import java.util.HashSet;
import java.util.Set;
//創建一個配置類
@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter {
/**
* 配置全局日期轉換器
*/
@Bean
@Autowired
public ConversionService getConversionService(DateConverter dateConverter){
ConversionServiceFactoryBean factoryBean = new ConversionServiceFactoryBean();
Set<converter> converters = new HashSet<>();
converters.add(dateConverter);
factoryBean.setConverters(converters);
return factoryBean.getObject();
}
}
/<converter>
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