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1、三种 POST 和 GET 的提交方式向服务器提交数据有两种方式，post 和 get。两者的区别主要有三点，安全性、长度限制、数据结构。其中 get 请求安全性相比较而言较差，数据长度受浏览器地址栏限制，没有方法体。两种都是较为重要的数据提交方式。现简单介绍一下三种 post 和 get 的提交方式。无论是哪种方法实现 post 和 get，get 的访问路径都要携带数据，而 post 提交是把数据放在方法体中。普通方法实现 get/post 提交： 严格遵照 Http 协议进行数据传输。在安卓开发环境下，由于主线程不能进行网络访问，因此需要在开启一个子线程向服务器提交数据。为了更加直观的观
2、察数据，可以在程序屏幕上显示服务器反馈信息。又由于子线程无法更改 UI 界面，因此需要引入 Hnndler 代理器。实现 get/post 提交基本步骤就是，获取 URL 路径，根据路径得到 Http 连接，用 HttpURLConnection 对象设置相关的 http 配置信息、提交方式以及获取反馈码。当响应码为 200 时表示提交成功，可以通过 HttpURLConnection 以流的形式获取反馈信息。 普通 GRT 提交方式：public void load(View view)final String qq = et_qq.getText().toString().trim();f
3、inal String pwd = et_pwd.getText().toString().trim();if (TextUtils.isEmpty(qq) | TextUtils.isEmpty(pwd) Toast.makeText(MainActivity.this, qq 号或密码为空, 0).show();return;final String path = http:/192.168.1.114:8080/qqload/qqload?qq= + qq+ new Thread() public void run() try URL url = new URL(path);HttpUR
4、LConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod(GET);conn.setReadTimeout(5000);int code = conn.getResponseCode();if (code = 200) InputStream is = conn.getInputStream();String result = StreamTools.ReadStream(is);Message msg = Message.obtain();msg.what = SUCCESS;msg.o
5、bj = result;handler.sendMessage(msg); else Message msg = Message.obtain();msg.what = ERROR1;handler.sendMessage(msg); catch (Exception e) / TODO Auto-generated catch blocke.printStackTrace();Message msg = Message.obtain();msg.what = ERROR2;handler.sendMessage(msg);.start();普通 POST 提交方式：复制代码public vo
6、id load(View view)final String qq = et_qq.getText().toString().trim();final String pwd = et_pwd.getText().toString().trim();if (TextUtils.isEmpty(qq) | TextUtils.isEmpty(pwd) Toast.makeText(MainActivity.this, qq 号或密码为空, 0).show();return;final String path = http:/192.168.1.114:8080/qqload/qqload;new
7、Thread() public void run() try URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod(POST);conn.setReadTimeout(5000);conn.setRequestProperty(Content-Type, application/x-www-form-urlencoded);String data = qq=+URLEncoder.encode(qq,utf-8)+ conn.
8、setRequestProperty(Content-Length,String.valueOf(data.length();etDoOutput(true);conn.getOutputStream().write(data.getBytes();int code = conn.getResponseCode();if (code = 200) InputStream is = conn.getInputStream();String result = StreamTools.ReadStream(is);Message msg = Message.obtain();msg.what = S
9、UCCESS;msg.obj = result;handler.sendMessage(msg); else Message msg = Message.obtain();msg.what = ERROR1;handler.sendMessage(msg); catch (Exception e) / TODO Auto-generated catch blocke.printStackTrace();Message msg = Message.obtain();msg.what = ERROR2;handler.sendMessage(msg);.start();复制代码用 httpclie
10、n 实现 get/post 提交的只需要一下几个步骤：1. 创建 HttpClient 对象，实现打开浏览器的功能HttpClient client = new DefaultHttpClient();2. 输入地址或者数据 ，用到 HttpGet()或 HttpPost(),传入要访问的路径，得到 HttpGet 或 HttpPost 对象。HttpGet httpGet = new HttpGet(path);3. 把获得的 HttpGet 或 HttpPost 对象发送到服务器，实现敲回车的功能，得到 HttpResponse 对象。HttpResponse response = cli
11、ent.execute(httpGet);4. 得到 HttpResponse 对象获取状态行中的状态码，判断状态码状态码。int code = response.getStatusLine().getStatusCode();5. 同样用 HttpResponse 对象获取相应内容，存入流对象。最后将得到的流对象转为字符串进行显示。InputStream is = response.getEntity().getContent();其中要注意的一点是用 post 请求时要传递值所以要多出一个步骤。具体而言，先创建一个 list 集合，集合的泛型用 NameValuePair 表示，类似于键值
12、对的形式存储要传递的数据。接着向集合中添加要提交数据。最后用 HttpPost 对象把集合存入请求体中。用 HttpClient 实现 GET 提交：复制代码public void load(View view)final String qq = et_qq.getText().toString().trim();final String pwd = et_pwd.getText().toString().trim();if (TextUtils.isEmpty(qq) | TextUtils.isEmpty(pwd) Toast.makeText(MainActivity.this, qq
13、号或密码为空, 0).show();return;final String path = http:/192.168.1.114:8080/qqload/qqload?qq= + qq+ new Thread() public void run() try HttpClient client = new DefaultHttpClient();HttpGet httpget = new HttpGet(path);HttpResponse response = client.execute(httpget);int code = response.getStatusLine().getStat
14、usCode();if (code = 200) InputStream is = response.getEntity().getContent();String result = StreamTools.ReadStream(is);Message msg = Message.obtain();msg.what = SUCCESS;msg.obj = result;handler.sendMessage(msg); else Message msg = Message.obtain();msg.what = ERROR1;handler.sendMessage(msg); catch (E
15、xception e) / TODO Auto-generated catch blocke.printStackTrace();Message msg = Message.obtain();msg.what = ERROR2;handler.sendMessage(msg);.start();复制代码用 HttpClient 实现 POST 提交： 复制代码public void load(View view)final String qq = et_qq.getText().toString().trim();final String pwd = et_pwd.getText().toString().trim();if (TextUtils.isEmpty(qq) | TextUtils.isEmpty(pwd) Toast.makeText(MainActivity.this, qq 号或密码为空, 0).show();return;final String path = http:/192.168.1.114:8080/qqload/qqload;new Thread() public void run() try HttpClient client = new DefaultHttpClient();HttpPost httppost = ne
