Java发送HTTP请求

最新推荐文章于 2023-01-04 09:52:08 发布

okiwilldoit

最新推荐文章于 2023-01-04 09:52:08 发布

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分类专栏： Java学习

本文链接：https://blog.youkuaiyun.com/okiwilldoit/article/details/42773841

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/**
	 * send http request
	 */
    public static JSONObject sendGet(URL url){
    	String result = "";
        BufferedReader in = null;
        JSONObject jsonObject = null;
        try {            
            HttpURLConnection oConn = null;
            if(Config.USE_PROXY){
	            Proxy oProxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(Config.PROXY_ADDR, Config.PROXY_PORT));
	            oConn = (HttpURLConnection) url.openConnection(oProxy);
            }else{
            	oConn = (HttpURLConnection) url.openConnection();
            }
            oConn.setConnectTimeout(5000);
            oConn.connect();
            if(oConn.getResponseCode()==200){
	            in = new BufferedReader(new InputStreamReader(oConn.getInputStream(), "UTF-8"));
	            String line;
	            while ((line = in.readLine()) != null) {
	                result += line;
	            }
            }            
            jsonObject = new JSONObject(result);
        } catch (Exception e) {
            System.err.println(url.toString()+"---get fail!");
            e.printStackTrace();
            jsonObject = null;
        }finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return jsonObject;
    }

上面的例子将请求返回的数据转化成了json格式，Config.USE_PROXY判断是否需要设置代理。