spring boot 请求参数String类型自动转Date_请求参数字符串转date字段

转载自：http://cxytiandi.com/blog/detail/8101

叙述

今天在post添加数据时，由于接收参数的实体类中的日期是Date类型，导致提交到后台报错。

参数提交上来时是字符串，需要转换成日期类型才可以。

解决

代码实现：

import java.text.SimpleDateFormat;
import java.util.Date;
import org.apache.commons.lang3.StringUtils;
import org.springframework.core.convert.converter.Converter;
/**
 * 日期转换器，解决在post请求中日期类型参数自动转Date类型
 * @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;
    /**
     * 增加字符串转日期的功能
     */
    @PostConstruct
    public void initEditableValidation() {
        ConfigurableWebBindingInitializer initializer = (ConfigurableWebBindingInitializer) handlerAdapter.getWebBindingInitializer();
        if (initializer.getConversionService() != null) {
            GenericConversionService genericConversionService = (GenericConversionService) initializer.getConversionService();
            genericConversionService.addConverter(new StringToDateConverter());
        }
    }
}