SpringBoot复习：（59）自定义类型转换器

一、自定义类型转换器：

package cn.edu.tju.component;

import org.springframework.core.convert.converter.Converter;
import org.springframework.stereotype.Component;

import java.util.Date;

@Component
public class MyDateConverter implements Converter {
    @Override
    public Date convert(String source) {
        return new Date(source.replace("--", "/"));
    }
}

二、将自定义类型转换器注册到Spring boot

package cn.edu.tju.config;


import cn.edu.tju.component.MyDateConverter;
import org.springframework.context.annotation.Configuration;
import org.springframework.format.FormatterRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class MyWebMvcConfig implements WebMvcConfigurer {

    @Override
    public void addFormatters(FormatterRegistry registry) {
        System.out.println("My converter called......");
        registry.addConverter(new MyDateConverter());
    }
}

三、请求测试：

    @RequestMapping("/hi3")
    public String hi3(Date date){
        System.out.println(date);
        return "hi3";
    }

http://localhost:9908/hi3?date=2023--09--23