android 关于 发送post请求的代码总结（包含加上参数）
16lz
2021-01-23
public String testhttps(String myurl,String str) { responseresult = postjson(myurl, str, AppContext.getContext()); Log.e("aa", "第一次服务器返回数据 " + responseresult); return responseresult;// JSONObject jsonObject= JSONObject.parseObject(responseresult);// int aa=(Integer) jsonObject.get("result");// Log.e("aa", "testhttps: "+ aa); } public String testhttps2(String myurl,String str) { try { responseresult = readContentFromPost(myurl, str); } catch (IOException e) { e.printStackTrace(); } Log.e("aa", "服务器返回数据 " + responseresult); return responseresult; } private String readContentFromPost(final String getUrl, final String datajson) throws IOException { // Post请求的url，与get不同的是不需要带参数 URL postUrl = new URL(getUrl); // 打开连接 HttpURLConnection connection = (HttpURLConnection) postUrl.openConnection(); // http正文内，因此需要设为true connection.setDoOutput(true); // Read from the connection. Default is true. connection.setDoInput(true); // 默认是 GET方式 connection.setRequestMethod("POST"); // Post 请求不能使用缓存 connection.setUseCaches(false); //设置本次连接是否自动重定向 connection.setInstanceFollowRedirects(true); // 配置本次连接的Content-type，配置为application/x-www-form-urlencoded的 connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded"); // 连接，从postUrl.openConnection()至此的配置必须要在connect之前完成， // 要注意的是connection.getOutputStream会隐含的进行connect。 connection.connect(); DataOutputStream out = new DataOutputStream(connection .getOutputStream()); // 正文，正文内容其实跟get的URL中 '? '后的参数字符串一致 String content = "Command=" + URLEncoder.encode(datajson, "UTF-8"); // DataOutputStream.writeBytes将字符串中的16位的unicode字符以8位的字符形式写到流里面 out.writeBytes(content); //流用完记得关 out.flush(); out.close(); //获取响应 BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream())); String line; StringBuilder stringBuilder=new StringBuilder(); while ((line = reader.readLine()) != null){ System.out.println(line); stringBuilder.append(line); } reader.close(); //该干的都干完了,记得把连接断了 connection.disconnect(); return stringBuilder.toString(); } private String postjson(final String getUrl, final String datajson, final Context context) { try { System.out.println("Send to:"+getUrl); System.out.println("Send data:"+datajson); URL connectUrl = new URL(getUrl); HttpURLConnection conn = (HttpURLConnection) connectUrl.openConnection(); conn.setRequestProperty("Content-Type", "application/json;charset=utf-8"); conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); conn.setConnectTimeout(5000); conn.setReadTimeout(45000); conn.setRequestMethod("POST"); conn.setDoInput(true); conn.setDoOutput(true); conn.connect(); BufferedWriter oWriter = new BufferedWriter(new OutputStreamWriter(conn.getOutputStream(), "UTF-8")); oWriter.write(datajson); oWriter.flush(); InputStreamReader isr = new InputStreamReader(conn.getInputStream(), "UTF-8"); BufferedReader reader = new BufferedReader(isr); int code = conn.getResponseCode(); String myresult = "无结果返回"; if (200 == code) { String temp = reader.readLine(); reader.close(); if (temp != null) { return temp; } } return myresult; } catch (Exception e) { e.printStackTrace(); return null; } }
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