httpurl下载-蒲公英云

httpurl下载

小咪咪 2022-12-17 07:20 254阅读 0赞

httpurl下载
File descFile = new File(MainActivity.this.getCacheDir(), fileName);
            // Android 4.0 之后不能在主线程中请求HTTP请求
            if (downflag){
                download(descFile);
            }
            new Thread(new Runnable(){
                @Override
                public void run() {
                    try {
                        HttpURLConnection conn = null;
                        trustAllHosts();
                        URL httpUrl = new URL(url);
                        HttpsURLConnection https = (HttpsURLConnection)httpUrl.openConnection();
                        if (httpUrl.getProtocol().toLowerCase().equals("https")) {
                            https.setHostnameVerifier(new HostnameVerifier() {
                                public boolean verify(String hostname, SSLSession session) {
                                    return true;
                                }
                            });
                            conn = https;
                        } else {
                            conn = (HttpURLConnection)httpUrl.openConnection();
                        }
                        conn.setRequestProperty("Cookie",cookieStr);
                        conn.setRequestProperty("Host","mail.ejianlong.com");
                        // 设置连接主机超时时间
                        conn.setConnectTimeout(5 * 1000);
                        //设置从主机读取数据超时
                        conn.setReadTimeout(5 * 1000);
                        // 设置是否使用缓存  默认是true
                        conn.setUseCaches(true);
                        // 设置为Post请求
                        conn.setRequestMethod("GET");
//                        conn.connect();
                        // 判断请求是否成功
                        if (conn.getResponseCode() == 200) {
                            FileOutputStream fos = new FileOutputStream(descFile);;
                            byte[] buffer = new byte[1024];
                            int len;
                            InputStream inputStream = conn.getInputStream();
                            while ((len = inputStream.read(buffer)) != -1) {
                                // 写到本地
                                fos.write(buffer, 0, len);
                            }
                            Log.e("文件下载完成", "文件下载完成");
//                            Intent handlerIntent = new Intent(Intent.ACTION_VIEW);
                            downflag = true;
                            handlerIntent.setDataAndType(uri, mimeType);
//                            // 以下固定写法
//                            final Intent intent = new Intent(Intent.ACTION_VIEW,
//                                    uri);
//                            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
//                                    | Intent.FLAG_ACTIVITY_SINGLE_TOP);
//                            startActivity(intent);
                            startActivity(handlerIntent);
                        } else {
                            Log.e("文件下载失败", "文件下载失败");
                        }
                        // 关闭连接
                        conn.disconnect();
                    } catch (Exception e) {
                        Log.e("文件下载失败", e.toString());
                    }
                }
                private  void trustAllHosts() {
                    final String TAG = "trustAllHosts";
                    // Create a trust manager that does not validate certificate chains
                    TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {
                        public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                            return new java.security.cert.X509Certificate[] {};
                        }
                        public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
                            Log.i(TAG, "checkClientTrusted");
                        }
                        public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
                            Log.i(TAG, "checkServerTrusted");
                        }
                    } };
                    // Install the all-trusting trust manager
                    try {
                        SSLContext sc = SSLContext.getInstance("TLS");
                        sc.init(null, trustAllCerts, new java.security.SecureRandom());
                        HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
                }).start();