网络请求测试之HttpUrlConnection【Android】

使用HttpConnection

1.URL：包含请求地址的类

url(path):包含请求路径的构造方法

openConnection():得到连接对象

2.HttpURLConnection：代表与服务器连接的类

setMethod("GET/POST"):设置请求方式

setConnectionTimeout(time):设置连接超时时间，单位为ms

setReadTimeout(time):设置读取服务器返回数据的时间

connect():连接服务器

int getResponseCode():得到服务器返回的结果吗

int getContentLength():得到服务器返回数据的长度（字节）

getOutputStream():返回一个指向服务器端的数据输出流

getInputStream():返回一个从服务器端返回的数据输入流

disconnect():断开连接

get请求

//显示ProgressDialog
                final ProgressDialog dialog = ProgressDialog.show(netActivity.this,null,"正在请求中...");
                //启动分线程
                new Thread() {
                    @Override
                    public void run() {
                        //在分线程，发送请求，得到响应数据
                        try {
                            //得到path
                            String path = et_net_url.getText().toString()+"?name=Tom&age=12";
                            //创建URL对象
                            URL url = new URL(path);
                            //打开连接，得到HttpURLConnection对象
                            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
//                            设置请求方式，连接超时，读取数据超时
                            connection.setRequestMethod("GET");
                            connection.setConnectTimeout(5000);
                            connection.setReadTimeout(6000);
                            //链接服务器
                            connection.connect();
                            //发送请求，得到响应数据
                            int responseCode = connection.getResponseCode();
                            //必须是200才读
                            if (responseCode==200) {
                                //得到InputStream，读取成string
                                InputStream is = connection.getInputStream();
                                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                                byte [] buffer = new byte[2014];
                                int len =-1;
                                while ((len=is.read(buffer))!=-1) {
                                    baos.write(buffer,0,len);
                                }
                                final String result = baos.toString();

                                baos.close();
                                is.close();
                                runOnUiThread(new Runnable() {
                                    @Override
                                    public void run() {
                                        et_net_show.setText(result);
                                        dialog.dismiss();
                                    }
                                });
                            }

                            connection.disconnect();
                        } catch (Exception e) {
                            e.printStackTrace();
                            dialog.dismiss();
                        }
                    }
                }.start();

post请求

 //显示ProgressDialog
                final ProgressDialog dialog = ProgressDialog.show(netActivity.this, null, "正在加载中....");
                //启动分线程
                new Thread(){
                    public void run() {
                        try {
                            String path = et_net_url.getText().toString(); //得到path
                            URL url = new URL(path);//创建URL对象
                            HttpURLConnection connection = (HttpURLConnection) url.openConnection();//打开链接，得到HttpURLConnection连接对象
                            connection.setRequestMethod("POST");//设置请求方式
                            connection.setConnectTimeout(5000);//设置连接时间
                            connection.setReadTimeout(5000);//设置读取时间
                            connection.connect();//打开链接
                            //发请求，得到响应数据
                            //得到输出流，写请求体：name=Tom&age=21
                            OutputStream os = connection.getOutputStream();
                            String data = "name=哈哈&age=21";
                            os.write(data.getBytes("utf-8"));
                            int responseCode = connection.getResponseCode();
                            if (responseCode==200) {
                                InputStream is = connection.getInputStream();
                                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                                byte[] buffer = new byte[2014];
                                int len=-1;
                                while ((len=is.read(buffer))!=-1) {
                                    baos.write(buffer,0,len);
                                }
                                final String result = baos.toString();
                                baos.close();
                                is.close();
                                runOnUiThread(new Runnable() {
                                    @Override
                                    public void run() {
                                        et_net_show.setText(result);
                                        dialog.dismiss();
                                    }
                                });
                                connection.disconnect();

                            }
                            os.close();
                        } catch (Exception e) {
                            e.printStackTrace();
                            dialog.dismiss();
                        }

                    }

                } .start();