• Android的HttpUrlConnection类的GET和POST请求


     1  /**
     2      * get方法使用
     3      */
     4     private void httpGet() {
     5         new Thread() {
     6             @Override
     7             public void run() {
                //此处的LOGIN是请求地址后面是拼接的参数
    8 String path = LOGIN + "?phone=12345678900&password=123456"; 9 URL url; 10 HttpURLConnection connection; 11 try { 12 url = new URL(path); 13 connection = (HttpURLConnection) url.openConnection(); 14 connection.setConnectTimeout(4000);//设置链接超时 15 connection.setRequestMethod("GET");//设置请求方法 16 17 connection.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 19 int responseCode = connection.getResponseCode(); 20 if (responseCode == HttpURLConnection.HTTP_OK) { 21 InputStream inputStream = connection.getInputStream(); 22 final String s = stremToString(inputStream); 23 24 runOnUiThread(new Runnable() { 25 @Override 26 public void run() { 27 Toast.makeText(MainActivity.this, s, Toast.LENGTH_SHORT).show(); 28 } 29 }); 30 inputStream.close(); 31 } 32 33 } catch (Exception e) { 34 e.printStackTrace(); 35 } 36 } 37 }.start(); 38 }
     1    /**
     2      * post方法
     3      */
     4     private void httpPost(final Map<String, String> prams) {
     5         new Thread() {
     6             @Override
     7             public void run() {
     8                 if (prams == null) {
     9                     runOnUiThread(new Runnable() {
    10                         @Override
    11                         public void run() {
    12                             Toast.makeText(MainActivity.this, "缺少参数!", Toast.LENGTH_SHORT).show();
    13                         }
    14                     });
    15                     return;
    16                 }
    17                 URL url;
    18                 HttpURLConnection connection;
    19                 try {
    20                     //拼接传入的请求参数
    21                     StringBuffer buffer = new StringBuffer();
    22                     //读取传入的map集合里参数
    23                     for (Map.Entry<String, String> entry : prams.entrySet()) {
    24                         String key = entry.getKey();
    25                         String value = entry.getValue();
    26                         //拼接参数 例如:phone = 12345678900 & password = 123456
    27                         buffer.append(key + "=" + URLEncoder.encode(value, "utf-8") + "&");
    28                     }
    29                     //此处是删除末尾拼接的 & 符号
    30                     buffer.deleteCharAt(buffer.length() - 1);
    31                     //REGISTER 是我自己服务器的一个测试请求地址
    32                     url = new URL(REGISTER);
    33                     connection = (HttpURLConnection) url.openConnection();
    34                     connection.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
    38                     connection.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
    39                     connection.setDoOutput(true);//设置允许向服务其写入数据,获取向服务器的输入流。
    40                     connection.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
    42                     connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
    43                     //设置向服务器输入的请求体长度
    44                     connection.setRequestProperty("Content-Length", String.valueOf(buffer.toString().getBytes().length));
    45                     //向服务器写入请求体
    46                     connection.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
    48                     int responseCode = connection.getResponseCode();
    49                     if (responseCode == HttpURLConnection.HTTP_OK) {
    50                         InputStream inputStream = connection.getInputStream();
    51                         final String result = stremToString(inputStream);
    52                         runOnUiThread(new Runnable() {
    53                             @Override
    54                             public void run() {
    55                                 Toast.makeText(MainActivity.this, result, Toast.LENGTH_SHORT).show();
    56                             }
    57                         });
    58                         inputStream.close();
    59                     }
    60 
    61                 } catch (Exception e) {
    62                     e.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      */
     8     private String stremToString(InputStream inputStream) throws IOException {
     9         ByteArrayOutputStream bos = new ByteArrayOutputStream();
    10         if (inputStream != null) {
    11             int len;
    12             byte[] bytes = new byte[1024];
    13             while ((len = inputStream.read(bytes)) != -1) {
    14                 bos.write(bytes, 0, len);
    15             }
    16             return bos.toString();
    17         } else {
    18             return "";
    19         }
    20     }

    最后 各位小伙伴们 又不懂或不清楚的可以给我留言 欢迎大家给我提出建议 或是指出问题 我们彼此都需要一个学习的过程

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  • 原文地址:https://www.cnblogs.com/hejiaoshou/p/7460714.html
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