java构造http请求

####【在java后台调用接口，发送http请求获取数据–GET】

public static void initmap(){
        //发送http请求获取用于初始化的数据
        BufferedReader in = null;
        String result="";
        try {
            System.out.println("正在获取初始化所需数据---");
            URL url=new URL("http://localhost:1188/border/website/indexrecord");
            // 打开和URL之间的连接
            URLConnection connection = url.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
            List<Website> websiteList= ResultContent.ResultStringtoList(result);
            System.out.println("数据获取成功-----正在初始化----");
            for(int i=0;i<websiteList.size();i++){
                map.put(websiteList.get(i).getKeynum(),websiteList.get(i).getCounts());
            }
            System.out.println(map);
            System.out.println("计数线程初始化完毕");
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            System.out.println("请求初始化所需数据失败++");
            e.printStackTrace();
        }finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

####【请求数据包含在url中】

public static void TimerUpdatemysql(Long counts,Long keynum){
        //发送http请求获取用于初始化的数据
        try {
            System.out.println("正在更新数据库---");
            String updateurl="http://localhost:1188/border/website/updatecounts?counts="+counts+"&keynum="+keynum;
            System.out.println(updateurl);
            URL url=new URL(updateurl);
            // 打开和URL之间的连接
            URLConnection connection = url.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            System.out.println("数据已更新");
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            System.out.println("存储数据库失败++");
            e.printStackTrace();
        }
    }