SpringFramework の RESTクライアント を使う場合.java

import java.util.LinkedHashMap;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.client.HttpClientErrorException;
import net.arnx.jsonic.JSON;
 
/*
 * (中略)
 */
 
        MultiValueMap<String, String> parts = new LinkedMultiValueMap<String, String>();
        parts.add("format", "json");
        RestTemplate rest = new RestTemplate();
        String response = rest.getForObject("http://ddbj.nig.ac.jp/wabi/blast/help/list_result", String.class, parts);
        /*
----  response の例 (ここから)  --------------------------------
{
    "result": [
        "www",
        "mail" 
    ]
}
----  response の例 (ここまで)  --------------------------------
         */
        LinkedHashMap<String, Object> result = JSON.decode(response, LinkedHashMap.class);
        String result0 = (List<String>)result.get(0);
        /*
         * 例:
         * result.size() == 2
         * result0 == "www" 
         */