java后端访问第三方服务器

缺乏、安全感 2023-10-11 12:23 7阅读 0赞

public static String sendRequestManager(String url, String body) throws IOException {
      
        StringBuilder sb = new StringBuilder();
        String result = "";
        BufferedWriter writer = null;
        BufferedReader bd = null;
    
        URL u = new URL(url);
        HttpURLConnection hc = (HttpURLConnection) u.openConnection();
        // uc.setRequestMethod("GET");
        hc.setRequestMethod("POST");
        hc.setConnectTimeout(5000);
        hc.setReadTimeout(5000);
    
        hc.setRequestProperty("Content-Type", "application/Json; charset=UTF-8");
    
        hc.setDoInput(true);
        hc.setDoOutput(true);
    
        try {
    
            writer = new BufferedWriter(new OutputStreamWriter(hc.getOutputStream(), "UTF-8"));
            writer.write(body);
            writer.close();
    
            if (hc.getResponseCode() == 200){
                bd = new BufferedReader(new InputStreamReader(hc.getInputStream(), "utf-8"));
                String s = null;
                while ((s = bd.readLine()) != null) {
                    sb.append(s);
                }
                bd.close();
            }else if (hc.getResponseCode() == 301 || hc.getResponseCode() == 302) {
                // 得到重定向的地址
                String location = hc.getHeaderField("Location");
                URL u1 = new URL(location);
                HttpURLConnection hc1 = (HttpURLConnection) u1.openConnection();
                hc1.setRequestMethod("POST");
                hc1.setConnectTimeout(5000);
                hc1.setReadTimeout(5000);
                if (hc1.getResponseCode() == 200) {
                    bd = new BufferedReader(new InputStreamReader(hc1.getInputStream(), "utf-8"));
                    String s = null;
                    while ((s = bd.readLine()) != null) {
                        sb.append(s);
                    }
                    bd.close();
                }
            }
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            if (bd != null) {
                bd.close();
            }
            if (writer != null) {
    
                writer.close();
            }
        }
    
        result = sb.toString();
    
        return result;
    }