[Spring] RestTemplate 일반 웹 서버 통신 예제

Spring의 RestTemplate으로 일반 웹 서버와 통신하는 예제이다. 한글 정보를 잘 받기 위해 StringHttpMessageConverter 을 잘 활용한다. 

https://gist.github.com/knight1128/66f3e4817ab35c7397fd

package com.google.locationlab;

 

import com.google.common.collect.Lists;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.junit.Test;

import org.springframework.http.*;

import org.springframework.http.converter.HttpMessageConverter;

import org.springframework.http.converter.StringHttpMessageConverter;

import org.springframework.web.client.RestTemplate;

import org.springframework.web.util.UriComponentsBuilder;

 

import java.net.URI;

import java.nio.charset.Charset;

import java.util.List;

 

public class PortalRestTemplateIntegrationTest {

    private Log logger = LogFactory.getLog(PortalRestTemplateIntegrationTest.class);

 

    @Test

    public void test() throws Exception {

        RestTemplate restTemplate = new RestTemplate();

 

        HttpMessageConverter stringHttpMessageConverter = new StringHttpMessageConverter(Charset.forName("UTF-8"));

        List<HttpMessageConverter<?>> httpMessageConverter = Lists.newArrayList();

        httpMessageConverter.add(stringHttpMessageConverter);

        restTemplate.setMessageConverters(httpMessageConverter);

 

        URI targetUrl= UriComponentsBuilder.fromUriString("http://portal.net")

                .path("search")

                .queryParam("q", "잠실역")

                .build()

                .toUri();

 

        HttpHeaders headers = new HttpHeaders();

        Charset utf8 = Charset.forName("UTF-8");

        MediaType mediaType = new MediaType("text", "html", utf8);

        headers.setContentType(mediaType);

        headers.set("User-Agent", "mozilla");

        headers.set("Accept-Language", "ko"); 

        // gzip 사용하면 byte[] 로 받아서, 압축을 풀고 decoding 해야 한다. 

 

        HttpEntity<String> entity = new HttpEntity<String>("parameters", headers);

        ResponseEntity<String> responseEntity = restTemplate.exchange(targetUrl.toURL().toString(), HttpMethod.GET, entity, String.class);

        String result = responseEntity.getBody();

 

        logger.info(result);

 

    }

}