java获取链接数据

package com.dongao.test;
import com.alibaba.fastjson.JSON;
import com.dongao.project.common.util.HttpPostUtil;
import java.util.*;
/**
 * @ClassName:MainTest
 * @author:test
 * @date 2021/7/5 17:34
 */
public class MainTest {
    public static void main(String[] args) {
        String url = "请求链接";
        StringBuffer sb = new StringBuffer();
        Set set = new HashSet();
        Map map = new HashMap(4);
        map.put("line","1");
        map.put("levelnum","0");
        for (int i = 1; i < 194; i++) {
            map.put("cpage",String.valueOf(i));
            String post = HttpPostUtil.post(url, map);
            Map maps = JSON.parseObject(post, Map.class);
            List<Map> chileds = (List<Map>) maps.get("chiled");
            for (Map m : chileds) {
                String drugname = (String) m.get("DRUGNAME");
                if (set.contains(drugname)) {
                }else {
                    set.add(drugname);
                    sb.append(m.get("DRUGNAME"));
                    sb.append(",");
                }
            }
        }
        System.out.println(sb.toString());
    }
}