spring boot 請求參數String類型自動轉Date

轉載自：http://cxytiandi.com/blog/detail/8101

叙述

今天在post添加資料時，由于接收參數的實體類中的日期是Date類型，導緻送出到背景報錯。

參數送出上來時是字元串，需要轉換成日期類型才可以。

解決

代碼實作：

import java.text.SimpleDateFormat;
import java.util.Date;
import org.apache.commons.lang3.StringUtils;
import org.springframework.core.convert.converter.Converter;
/**
 * 日期轉換器，解決在post請求中日期類型參數自動轉Date類型
 * @author yinjihuan
 *
 */
public class StringToDateConverter implements Converter<String, Date> {
    private static final String dateFormat = "yyyy-MM-dd HH:mm:ss";
    private static final String shortDateFormat = "yyyy-MM-dd";
    private static final String dateFormat2 = "yyyy/MM/dd HH:mm:ss";
    private static final String shortDateFormat2 = "yyyy/MM/dd";
    @Override
    public Date convert(String source) {
        if (StringUtils.isBlank(source)) {
            return null;
        }
        source = source.trim();
        try {
            SimpleDateFormat formatter;
            if (source.contains("-")) {
                if (source.contains(":")) {
                    formatter = new SimpleDateFormat(dateFormat);
                } else {
                    formatter = new SimpleDateFormat(shortDateFormat);
                }
                Date dtDate = formatter.parse(source);
                return dtDate;
            } else if (source.contains("/")) {
                if (source.contains(":")) {
                    formatter = new SimpleDateFormat(dateFormat2);
                } else {
                    formatter = new SimpleDateFormat(shortDateFormat2);
                }
                Date dtDate = formatter.parse(source);
                return dtDate;
            }
        } catch (Exception e) {
            throw new RuntimeException(String.format("parser %s to Date fail", source));
        }
        throw new RuntimeException(String.format("parser %s to Date fail", source));
    }
}
           

import javax.annotation.PostConstruct;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.convert.support.GenericConversionService;
import org.springframework.web.bind.support.ConfigurableWebBindingInitializer;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter;
import com.fangjia.amp.common.StringToDateConverter;
@Configuration
public class WebConfigBeans {
    @Autowired
    private RequestMappingHandlerAdapter handlerAdapter;
    /**
     * 增加字元串轉日期的功能
     */
    @PostConstruct
    public void initEditableValidation() {
        ConfigurableWebBindingInitializer initializer = (ConfigurableWebBindingInitializer) handlerAdapter.getWebBindingInitializer();
        if (initializer.getConversionService() != null) {
            GenericConversionService genericConversionService = (GenericConversionService) initializer.getConversionService();
            genericConversionService.addConverter(new StringToDateConverter());
        }
    }
}