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();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?qq=" + qq+ "&pwd=" + pwd;new Thread() {public void run() {try {URL url = new URL(path);HttpURLConnection 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.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();}普通POST提交方式：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 {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")+"&pwd=" + URLEncoder.encode(pwd,"utf-8");conn.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 = SUCCESS;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httpclien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 = client.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号或密码为空", 0).show();return;}final String path = "http://192.168.1.114:8080/qqload/qqload?qq=" + qq + "&pwd=" + pwd;new Thread() {public void run() {try {HttpClient client = new DefaultHttpClient();HttpGet httpget = new HttpGet(path);HttpResponse response = client.execute(httpget);int code = response.getStatusLine().getStatusCode();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 (Exception 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 = new HttpPost(path);List<NameValuePair> parameter = new ArrayList();parameter.add(new BasicNameValuePair("qq", qq));parameter.add(new BasicNameValuePair("pwd", pwd));httppost.setEntity(new UrlEncodedFormEntity(parameter,"utf-8"));HttpResponse response = client.execute(httppost);int code = response.getStatusLine().getStatusCode();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 (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();Message msg = Message.obtain();msg.what = ERROR2;handler.sendMessage(msg);}}}.start();}复制代码使用开源框架实现get/post提交：利用框架实现get/post提交不需要再开启子线程。