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HttpClient执行Get和Post请求.md

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HttpClient执行Get和Post请求

  1. Get

    /**
 * 采用httpclient的方式 用get提交数据到服务器
 */
public void loginByClientGet(View view) {
    String password = et_password.getText().toString().trim();
    String name = et_username.getText().toString().trim();
    if (TextUtils.isEmpty(name) || TextUtils.isEmpty(password)) {
        Toast.makeText(this, "用户名密码不能为空", 1).show();
        return;
    }
    // 1.打开浏览器
    HttpClient client = new DefaultHttpClient();
    // 2.输入浏览器的地址
    String uri = "http://192.168.1.100:8080/web/LoginServlet?" + "name="
            + URLEncoder.encode(name) + "&password="
            + URLEncoder.encode(password);
    HttpGet httpGet = new HttpGet(uri);
    // 3.敲回车.
    try {
        HttpResponse response = client.execute(httpGet);
        int code = response.getStatusLine().getStatusCode();
        if (code == 200) {
            InputStream is = response.getEntity().getContent();
            String result = StreamTools.readFromStream(is);
            Toast.makeText(this, result, 1).show();
        } else {
            Toast.makeText(this, "服务器异常", 1).show();
        }
    } catch (Exception e) {
        e.printStackTrace();
        Toast.makeText(this, "访问网络异常", 1).show();
    }
}

  2. Post

    /**
 * 采用httpclient post数据到服务器
 */
public void loginByClientPost(View view) {
    String password = et_password.getText().toString().trim();
    String name = et_username.getText().toString().trim();
    if (TextUtils.isEmpty(name) || TextUtils.isEmpty(password)) {
        Toast.makeText(this, "用户名密码不能为空", 1).show();
        return;
    }
    try {
        // 1.创建一个浏览器
        HttpClient client = new DefaultHttpClient();
        // 2.准备一个连接
        HttpPost post = new HttpPost(
                "http://192.168.1.100:8080/web/LoginServlet");
        // 要向服务器提交的数据实体
        List<NameValuePair> parameters = new ArrayList<NameValuePair>();
        parameters.add(new BasicNameValuePair("name", name));
        parameters.add(new BasicNameValuePair("password", password));
        UrlEncodedFormEntity entity = new UrlEncodedFormEntity(parameters,
                "utf-8");
        post.setEntity(entity);
        // 3.敲回车
        HttpResponse response = client.execute(post);
        int code = response.getStatusLine().getStatusCode();
        if (code == 200) {
            InputStream is = response.getEntity().getContent();
            String result = StreamTools.readFromStream(is);
            Toast.makeText(this, result, 1).show();
        } else {
            Toast.makeText(this, "服务器异常", 1).show();
        }
    } catch (Exception e) {
        e.printStackTrace();
        Toast.makeText(this, "client post 失败", 1).show();
    }
}