核心代码:
参数格式:
“key1=value1&key2=value2”
/*** sendUrl (远程请求的URL)* param (远程请求参数)* JSONObject (远程请求返回的JSON)*/private JSONObject sendPostUrl(String url, String param){ PrintWriter out = null; BufferedReader in = null; JSONObject jsonObject = null; String result = ""; try { URL realUrl = new URL(url); // 打开和URL之间的连接 URLConnection conn = realUrl.openConnection(); // 发送POST请求必须设置如下两行 conn.setDoOutput(true); conn.setDoInput(true); // 获取URLConnection对象对应的输出流(设置请求编码为UTF-8) out = new PrintWriter(new OutputStreamWriter(conn.getOutputStream(), "UTF-8")); // 发送请求参数 out.print(param); // flush输出流的缓冲 out.flush(); // 获取请求返回数据(设置返回数据编码为UTF-8) in = new BufferedReader( new InputStreamReader(conn.getInputStream(), "UTF-8")); String line; while ((line = in.readLine()) != null) { result += line; } jsonObject = JSONObject.fromObject(result); System.out.println(jsonObject); } catch (IOException e) { e.printStackTrace(); } finally{ try{ if(out!=null){ out.close(); } if(in!=null){ in.close(); } } catch(IOException ex){ ex.printStackTrace(); } } return jsonObject; }
调用方法:
public JSONObject send(String username, String password){ String params = "username=" + username+ "&password=" + password; JSONObject jsonObject = sendPostUrl("https://www.ysy7.com/login/", params); return jsonObject; }
时间: 2024-09-27 22:40:19