Android的HttpUrlConnection类的GET和POST请求

恢弘志士之气，不宜妄自菲薄。这篇文章主要讲述Android的HttpUrlConnection类的GET和POST请求相关的知识，希望能为你提供帮助。

1/** 2* get方法使用 3*/ 4private void httpGet() { 5new Thread() { 6@Override 7public void run() {
//此处的LOGIN是请求地址后面是拼接的参数 8String path = LOGIN + "?phone=12345678900& password=123456"; 9URL url; 10HttpURLConnection connection; 11try { 12url = new URL(path); 13connection = (HttpURLConnection) url.openConnection(); 14connection.setConnectTimeout(4000); //设置链接超时 15connection.setRequestMethod("GET"); //设置请求方法 16 17connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); //设置请求体的内容，处处默认也是一样表示请求的是文本内容 18 19int responseCode = connection.getResponseCode(); 20if (responseCode == HttpURLConnection.HTTP_OK) { 21InputStream inputStream = connection.getInputStream(); 22final String s = stremToString(inputStream); 23 24runOnUiThread(new Runnable() { 25@Override 26public void run() { 27Toast.makeText(MainActivity.this, s, Toast.LENGTH_SHORT).show(); 28} 29}); 30inputStream.close(); 31} 32 33} catch (Exception e) { 34e.printStackTrace(); 35} 36} 37}.start(); 38}

1/** 2* post方法 3*/ 4private void httpPost(final Map< String, String> prams) { 5new Thread() { 6@Override 7public void run() { 8if (prams == null) { 9runOnUiThread(new Runnable() { 10@Override 11public void run() { 12Toast.makeText(MainActivity.this, "缺少参数!", Toast.LENGTH_SHORT).show(); 13} 14}); 15return; 16} 17URL url; 18HttpURLConnection connection; 19try { 20//拼接传入的请求参数 21StringBuffer buffer = new StringBuffer(); 22//读取传入的map集合里参数 23for (Map.Entry< String, String> entry : prams.entrySet()) { 24String key = entry.getKey(); 25String value = https://www.songbingjia.com/android/entry.getValue(); 26//拼接参数例如：phone = 12345678900 & password = 123456 27buffer.append(key +"=" + URLEncoder.encode(value, "utf-8") + "& "); 28} 29//此处是删除末尾拼接的 & 符号 30buffer.deleteCharAt(buffer.length() - 1); 31//REGISTER 是我自己服务器的一个测试请求地址 32url = new URL(REGISTER); 33connection = (HttpURLConnection) url.openConnection(); 34connection.setConnectTimeout(4000); 35 36//此处的输出流表示服务器对客服端的响应输出流即InPutStream 37//此处的输入流表示客服端向服务器输入数据即 OutPutStream 38connection.setDoInput(true); //获取服务器的响应输出流此处默认是true 可以不用设置 39connection.setDoOutput(true); //设置允许向服务其写入数据，获取向服务器的输入流。 40connection.setRequestMethod("POST"); 41//此处设置向服务器请求的内容请求的是文本内容默认是可以不用设置的 42connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); 43//设置向服务器输入的请求体长度 44connection.setRequestProperty("Content-Length", String.valueOf(buffer.toString().getBytes().length)); 45//向服务器写入请求体 46connection.getOutputStream().write(buffer.toString().getBytes()); 47//获取请求状态吗 HttpURLConnection.HTTP_OK 为请求成功写200 也可以的 48int responseCode = connection.getResponseCode(); 49if (responseCode == HttpURLConnection.HTTP_OK) { 50InputStream inputStream = connection.getInputStream(); 51final String result = stremToString(inputStream); 52runOnUiThread(new Runnable() { 53@Override 54public void run() { 55Toast.makeText(MainActivity.this, result, Toast.LENGTH_SHORT).show(); 56} 57}); 58inputStream.close(); 59} 60 61} catch (Exception e) { 62e.printStackTrace(); 63} 64} 65}.start(); 66}

1/** 2* 把输入流转换成字符串 3* 4* @param inputStream 5* @return 6* @throws IOException 7*/ 8private String stremToString(InputStream inputStream) throws IOException { 9ByteArrayOutputStream bos = new ByteArrayOutputStream(); 10if (inputStream != null) { 11int len; 12byte[] bytes = new byte[1024]; 13while ((len = inputStream.read(bytes)) != -1) { 14bos.write(bytes, 0, len); 15} 16return bos.toString(); 17} else { 18return ""; 19} 20}

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