JAVA如何编写全局的日期格式处理器

后端定义Date类型的数据，但是前端传date类型的时候会有问题。原因我也忘记了，之前做的，现在整理一下。

前端传过来的DATE数据是String类型的，首先需要 创建一个类去处理日期格式的String类型的数据。

CustomDateConverter 类

package com.gisquest.jsyd.business.common;

import org.springframework.core.convert.converter.Converter;
import org.springframework.util.StringUtils;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * 字符床转换日期的转换器
 *  要在mvc 配置文件中进行配置启动
 */

public class CustomDateConverter implements Converter<String, Date>  {
    private static final String dateFormat      = "yyyy-MM-dd HH:mm:ss";
    private static final String shortDateFormat = "yyyy-MM-dd";

    /**
     * @param source
     * @return
     */
    @Override
    public Date convert(String source) {
        if (StringUtils.isEmpty(source)) {
            return null;
        }
        source = source.trim();
        try {
            if (source.contains("-")) {
                SimpleDateFormat formatter;
                if (source.contains(":")) {
                    formatter = new SimpleDateFormat(dateFormat);
                } else {
                    formatter = new SimpleDateFormat(shortDateFormat);
                }
                Date dtDate = formatter.parse(source);
                return dtDate;
            } else if (source.matches("^\\d+$")) {
                Long lDate = new Long(source);
                return new Date(lDate);
            }
        } 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));
    }
}

进行配置

package com.gisquest.jsyd.business.common;

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 javax.annotation.PostConstruct;

@Configuration
public class WebConfigBeans {

    @Autowired
    private RequestMappingHandlerAdapter handlerAdapter;

    /**
     * 增加字符串转日期的功能
     */

    @PostConstruct
    public void initEditableAvlidation() {

        ConfigurableWebBindingInitializer initializer = (ConfigurableWebBindingInitializer)handlerAdapter.getWebBindingInitializer();
        if(initializer.getConversionService()!=null) {
            GenericConversionService genericConversionService = (GenericConversionService)initializer.getConversionService();

            genericConversionService.addConverter(new CustomDateConverter());

        }

    }

}