SpringBoot 请求参数增加String 转Date全局转换器

SpringBoot 请求参数增加String 转Date全局转换器

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配置方法

1、新增一个转换类

新增一个string转换成date的类，实现Converter接口，代码如下：

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

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

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";

    @Override
    public Date convert(String value) {

        if(StringUtils.isEmpty(value)) {
            return null;
        }

        value = value.trim();

        try {
            if(value.contains("-")) {
                SimpleDateFormat formatter;
                if(value.contains(":")) {
                    formatter = new SimpleDateFormat(dateFormat);
                }else {
                    formatter = new SimpleDateFormat(shortDateFormat);
                }

                Date dtDate = formatter.parse(value);
                return dtDate;              
            }else if(value.matches("^\\d+$")) {
                Long lDate = new Long(value);
                return new Date(lDate);
            }
        } catch (Exception e) {
            throw new RuntimeException(String.format("parser %s to Date fail", value));
        }
        throw new RuntimeException(String.format("parser %s to Date fail", value));
    }


}

2、注册转换器

新增一个类，配置为Configuration，把第一步新增的类注册为转换器，代码如下：

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;

@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 StringToDateConverter());

        }

    }

}