스프링에 Converter 적용하기

Converter 객체 생성

package hello.typeconverter.type;

import lombok.EqualsAndHashCode;
import lombok.Getter;

@Getter
@EqualsAndHashCode
public class IpPort {
    private String ip;
    private int port;

    public IpPort(String ip, int port) {
        this.ip = ip;
        this.port = port;
    }
}

 

Converter 생성

package hello.typeconverter.converter;

import hello.typeconverter.type.IpPort;
import lombok.extern.slf4j.Slf4j;
import org.springframework.core.convert.converter.Converter;

@Slf4j
public class StringToIpPortConverter implements Converter<String, IpPort> {
    @Override
    public IpPort convert(String source) {
        log.info("covert source={}", source);
        String[] split = source.split(":");
        String ip = split[0];
        int port = Integer.parseInt(split[1]);
        return new IpPort(ip, port);

    }
}

 

Converter 등록

package hello.typeconverter;

import hello.typeconverter.converter.IntegerToStringConverter;
import hello.typeconverter.converter.IpPortToStringConverter;
import hello.typeconverter.converter.StringToIntegerConverter;
import hello.typeconverter.converter.StringToIpPortConverter;
import org.springframework.context.annotation.Configuration;
import org.springframework.format.FormatterRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class WebConfig implements WebMvcConfigurer {
    @Override
    public void addFormatters(FormatterRegistry registry) {
        registry.addConverter(new StringToIntegerConverter());
        registry.addConverter(new IntegerToStringConverter());
        registry.addConverter(new StringToIpPortConverter());
        registry.addConverter(new IpPortToStringConverter());


    }
}

컨트롤러

    @GetMapping("/ip-port")
    public String ipPort(@RequestParam IpPort ipPort) {
        System.out.println("ipPort.getIp() = " + ipPort.getIp());
        System.out.println("ipPort.getPort() = " + ipPort.getPort());
        return "ok";
    }