Android 使用HttpClient提交表单数据

说明：httpclient有两种方式
1）HttpGet
直接把数据放在url里传输
String url = mUrl + “?name=” + URLEncoder.encode(name, “utf-8”)
+ “&password=” + URLEncoder.encode(password, “utf-8”);
2）HttpPost
使用HttpEntity 封装数据
List parameters = new ArrayList();
parameters.add(new BasicNameValuePair(“name”, URLEncoder.encode(name, “utf-8”)));
parameters.add(new BasicNameValuePair(“password”, URLEncoder.encode(password, “utf-8”)));
HttpEntity entity = new UrlEncodedFormEntity(parameters, “utf-8”);
request.setEntity(entity);

public class ClientActivity extends BaseActivity {
    private String mUrl = "http://192.168.0.20:8080/Web/login";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_http);
    }

    public void getMethod(View view) {
        try {
            ByteArrayOutputStream bos = null;
            String name = "tom";
            String password = "123";
            String url = mUrl + "?name=" + URLEncoder.encode(name, "utf-8")
                    + "&password=" + URLEncoder.encode(password, "utf-8");
            HttpClient client = new DefaultHttpClient();
            HttpGet request = new HttpGet(url);
            HttpResponse response = client.execute(request);
            if (response.getStatusLine().getStatusCode() == 200) {
                InputStream inputStream = response.getEntity().getContent();
                bos = new ByteArrayOutputStream();
                int len = 0;
                byte[] buffer = new byte[1024];
                while ((len = inputStream.read(buffer)) != -1) {
                    bos.write(buffer, 0, len);
                }
                bos.flush();
                inputStream.close();
                bos.close();
            }
            String result = new String(bos.toByteArray(), "utf-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IllegalStateException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void postMethod(View view) {
        try {
            ByteArrayOutputStream bos = null;
            String name = "tom";
            String password = "123";
            HttpClient client = new DefaultHttpClient();
            HttpPost request = new HttpPost(mUrl);
            List<NameValuePair> parameters = new ArrayList<NameValuePair>();
            parameters.add(new BasicNameValuePair("name", URLEncoder.encode(name, "utf-8")));
            parameters.add(new BasicNameValuePair("password", URLEncoder.encode(password, "utf-8")));
            HttpEntity entity = new UrlEncodedFormEntity(parameters, "utf-8");
            request.setEntity(entity);
            HttpResponse response = client.execute(request);
            if (response.getStatusLine().getStatusCode() == 200) {
                InputStream inputStream = response.getEntity().getContent();
                bos = new ByteArrayOutputStream();
                int len = 0;
                byte[] buffer = new byte[1024];
                while ((len = inputStream.read(buffer)) != -1) {
                    bos.write(buffer, 0, len);
                }
                bos.flush();
                inputStream.close();
                bos.close();
            }
            String result = new String(bos.toByteArray(), "utf-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IllegalStateException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}