无Unity分享一个古老的Android通信http类

Posted 2021-08-30 avi9111

现在早不流行这么干了，下面代码是一些“祖传”的方法

随着android支持https，这样的方法，可能会带来一些 隐患

不过，为了避免引入第三方包，或者避免冲突

选了一个老人才会的“偏方”

调用方法

 String json = "";
 FormFieldKeyValuePair item = new FormFieldKeyValuePair();
        item.setKey("msgContent");
        item.setValue(json);
        arr.add(item);
        try {
            String url = DMMLaunchUtility.GetUrl();
            HttpUtility.sendHttpPost(url, arr);
        } catch (Exception e) {
            e.printStackTrace();
        }

源码

public class HttpUtils
{
 public static String sendHttpPost(String serverUrl, ArrayList<FormFieldKeyValuePair> generalFormFields) throws Exception {
        // 向服务器发送post请求
        URL url = new URL(serverUrl/* "http://127.0.0.1:8080/test/upload" */);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();

        // 发送POST请求必须设置如下两行
        connection.setDoOutput(true);
        connection.setDoInput(true);
        connection.setUseCaches(false);
        connection.setRequestMethod("POST");
        connection.setRequestProperty("Connection", "Keep-Alive");
        connection.setRequestProperty("Charset", "UTF-8");
        connection.setRequestProperty("Content-Type",
                "multipart/form-data; boundary=" + BOUNDARY);
        // 头
        String boundary = BOUNDARY;

        // 传输内容
        StringBuffer contentBody = new StringBuffer("--" + BOUNDARY);

        // 尾
        String endBoundary = "\\r\\n--" + boundary + "--\\r\\n";
        OutputStream out = connection.getOutputStream();
        // 处理文字形式的POST请求
        for (FormFieldKeyValuePair ffkvp : generalFormFields) {
            contentBody.append("\\r\\n")
                    .append("Content-Disposition: form-data; name=\\"")
                    .append(ffkvp.getKey() + "\\"")
                    .append("\\r\\n")
                    .append("\\r\\n")
                    .append(ffkvp.getValue())
                    .append("\\r\\n")
                    .append("--")
                    .append(boundary);
        }

        String boundaryMessage1 = contentBody.toString();
        out.write(boundaryMessage1.getBytes("utf-8"));
        out.write(endBoundary.getBytes("utf-8"));
        out.flush();
        out.close();

        // 从服务器获得回答的内容
        String strLine = "";
        String strResponse = "";
        InputStream in = connection.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(in));
        while ((strLine = reader.readLine()) != null) {
            strResponse += strLine + "\\n";
        }
        // System.out.print(strResponse);
        return strResponse;
    }

}