Android 网络通信 HTTP

摘要

1. Http GET 方法访问网站

2. Http POST访问网站

3. HttpClient进行Get方式通信

4. HttpClient进行Post方式通信

--------------------------------------------------------

工程代码：

HttpClientPost.zip

HttpGet.zip

HttpClentGet.zip

HttpPost.zip

--------------------------------------------------------

1. Http GET 方法访问网站

使用Get方式与网络通信是最常见的Http通信，建立链接之后就可以通过输入流读取网络数据。

new AsyncTask<String, Void, Void>() {

    @Override
    protected Void doInBackground(String... params) {
        // TODO Auto-generated method stub
        try {
            URL url = new URL(params[0]);
            URLConnection conn = url.openConnection();
            InputStream is = conn.getInputStream();
            InputStreamReader isr = new InputStreamReader(is,
                    "utf-8");

            BufferedReader br = new BufferedReader(isr);
            String line;
            while ((line = br.readLine()) != null) {
                Log.d("CARLOZ", line);
            }
            br.close();
            isr.close();
            is.close();
            is = conn.getInputStream();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return null;
    }

}.execute("http://carloz.duapp.com");

运行结果

08-25 12:56:24.160: D/CARLOZ(27942): <!DOCTYPE html>
08-25 12:56:24.160: D/CARLOZ(27942): <html>
08-25 12:56:24.160: D/CARLOZ(27942): <head>
08-25 12:56:24.160: D/CARLOZ(27942):     <title>CARLOZ</title>
08-25 12:56:24.160: D/CARLOZ(27942):     <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" />
08-25 12:56:24.160: D/CARLOZ(27942):     <link href="/static/favicon.ico" rel="shortcut icon" type="image/x-icon" />
08-25 12:56:24.160: D/CARLOZ(27942):     <link href="/static/favicon.ico" rel="icon" type="image/x-icon"  />
08-25 12:56:24.160: D/CARLOZ(27942):     <link href="/static/default/css/base.css" rel="stylesheet" type="text/css" />
08-25 12:56:24.160: D/CARLOZ(27942):     <link href="/static/default/css/index.css" rel="stylesheet" type="text/css" />
08-25 12:56:24.160: D/CARLOZ(27942):     <link href="/static/default/css/moudle_g_search_bar.css" rel="stylesheet" type="text/css" />
08-25 12:56:24.160: D/CARLOZ(27942):     <link href="/static/default/css/moudle_g_taglist.css" rel="stylesheet" type="text/css" />
08-25 12:56:24.160: D/CARLOZ(27942):     <script src="/static/default/js/jquery-2.1.3.min.js" type="text/javascript"></script>
08-25 12:56:24.160: D/CARLOZ(27942): </head>
08-25 12:56:24.160: D/CARLOZ(27942): <body>
08-25 12:56:24.160: D/CARLOZ(27942):     <div class="wrap">
08-25 12:56:24.160: D/CARLOZ(27942):         <div class="main" class="clearfix">
08-25 12:56:24.160: D/CARLOZ(27942):             <div class="header">
08-25 12:56:24.160: D/CARLOZ(27942):                 <div class="top-bar">
08-25 12:56:24.160: D/CARLOZ(27942):                     <div class="top-bar">
08-25 12:56:24.160: D/CARLOZ(27942):     <span class="index-page"><a href="/">CARLOZ</a>&nbsp;|&nbsp;</span>
08-25 12:56:24.170: D/CARLOZ(27942):     
08-25 12:56:24.170: D/CARLOZ(27942):     <span class="login-btn"><a href="/auth/login">Log in</a>&nbsp;|&nbsp;</span>
08-25 12:56:24.170: D/CARLOZ(27942):     <span class="register-btn"><a href="/auth/regist">Register</a></span>
08-25 12:56:24.170: D/CARLOZ(27942):     
08-25 12:56:24.170: D/CARLOZ(27942): </div>
08-25 12:56:24.170: D/CARLOZ(27942):                 </div>
08-25 12:56:24.170: D/CARLOZ(27942):                 <div class="g_search_bar">
08-25 12:56:24.170: D/CARLOZ(27942):     <a href="/">
08-25 12:56:24.170: D/CARLOZ(27942):         <span class="logo">
08-25 12:56:24.170: D/CARLOZ(27942):             <span class="logo_name">CARLO</span><span class="logo_rear">Z</span>
08-25 12:56:24.170: D/CARLOZ(27942):         </span>
08-25 12:56:24.170: D/CARLOZ(27942):     </a>
08-25 12:56:24.170: D/CARLOZ(27942):     <form class="search_form" action="/search/">
08-25 12:56:24.170: D/CARLOZ(27942):         <input class="search_text" name="keywords" type="text"  value=""/>
08-25 12:56:24.170: D/CARLOZ(27942):         <input class="btn_submit" type="submit" value="search" />
08-25 12:56:24.170: D/CARLOZ(27942):     </form>
08-25 12:56:24.170: D/CARLOZ(27942): </div>
08-25 12:56:24.170: D/CARLOZ(27942): <div class="clear"></div>
08-25 12:56:24.170: D/CARLOZ(27942):             </div>
08-25 12:56:24.170: D/CARLOZ(27942):             <div class="g_taglist">
08-25 12:56:24.170: D/CARLOZ(27942):                 <div id="personal_tag" class="tag-list hidden">
08-25 12:56:24.170: D/CARLOZ(27942): </div>
08-25 12:56:24.170: D/CARLOZ(27942): <div id="public_tag" class="tag-list">
08-25 12:56:24.170: D/CARLOZ(27942):     <dl> 
08-25 12:56:24.170: D/CARLOZ(27942):         <dt> <a href="/tag/?tag_name=Android">Android</a> </dt>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=ActivityManagerService">ActivityManagerService</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=WindowManagerService">WindowManagerService</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=PackageManagerService">PackageManagerService</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=SystemServer">SystemServer</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=PopupWindow">PopupWindow</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=PhoneWindow">PhoneWindow</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=ActivityThread">ActivityThread</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=Handler">Handler</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=mk">mk</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):     </dl>
08-25 12:56:24.170: D/CARLOZ(27942):     <dl> 
08-25 12:56:24.170: D/CARLOZ(27942):         <dt> <a href="/tag/?tag_name=Python">Python</a> </dt>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=Flask">Flask</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=Web.py">Web.py</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=Django">Django</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):     </dl>
08-25 12:56:24.170: D/CARLOZ(27942):     <dl> 
08-25 12:56:24.170: D/CARLOZ(27942):         <dt> <a href="/tag/?tag_name=ios">IOS</a> </dt>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=object-c">Object-c</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):     </dl>
08-25 12:56:24.170: D/CARLOZ(27942):     <dl> 
08-25 12:56:24.170: D/CARLOZ(27942):         <dt> <a href="/tag/?tag_name=J2EE">J2EE</a> </dt>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=Struts">Struts</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=Spring">Spring</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=Hibernate">Hibernate</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):     </dl>
08-25 12:56:24.170: D/CARLOZ(27942):     <dl> 
08-25 12:56:24.170: D/CARLOZ(27942):         <dt> Web </dt>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=CSS">CSS</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=jQuery">jQuery</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=YUI">YUI</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=Bootstrap">Bootstrap</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="/tag/?tag_name=Xml">Xml</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):     </dl>
08-25 12:56:24.170: D/CARLOZ(27942):     <dl> 
08-25 12:56:24.170: D/CARLOZ(27942):         <dt> Cloud </dt>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="http://bce.baidu.com/">BCE</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="http://sae.sina.com.cn/">SAE</a> </dd>
08-25 12:56:24.170: D/CARLOZ(27942):         <dd> . <a href="#">GAE</a> </dd>
08-25 12:56:24.190: D/CARLOZ(27942):         <dd> . <a href="http://www.qiniu.com">Qiniu</a> </dd>
08-25 12:56:24.190: D/CARLOZ(27942):         <dd> . <a href="http://www.aliyun.com/">Aliyun</a> </dd>
08-25 12:56:24.190: D/CARLOZ(27942):         <dd> . <a href="http://www.qcloud.com/">QCloud</a> </dd>
08-25 12:56:24.190: D/CARLOZ(27942):     </dl>
08-25 12:56:24.190: D/CARLOZ(27942):     <dl> 
08-25 12:56:24.190: D/CARLOZ(27942):         <dt> Domain </dt>
08-25 12:56:24.190: D/CARLOZ(27942):         <dd> . <a href="http://www.xinnet.com/">XinNet</a> </dd>
08-25 12:56:24.190: D/CARLOZ(27942):         <dd> . <a href="https://www.dnspod.cn/">DNSPod</a> </dd>
08-25 12:56:24.190: D/CARLOZ(27942):     </dl>
08-25 12:56:24.190: D/CARLOZ(27942): </div>
08-25 12:56:24.190: D/CARLOZ(27942):             </div>
08-25 12:56:24.190: D/CARLOZ(27942):         </div>
08-25 12:56:24.190: D/CARLOZ(27942):     </div>
08-25 12:56:24.190: D/CARLOZ(27942):     <div class="footer">
08-25 12:56:24.190: D/CARLOZ(27942):         <div class="copyright">
08-25 12:56:24.190: D/CARLOZ(27942):             Copyright ?
08-25 12:56:24.190: D/CARLOZ(27942):             <strong><a href="/" target="_blank">CZLIB</a></strong>&nbsp;
08-25 12:56:24.190: D/CARLOZ(27942):             All Rights Reversed.
08-25 12:56:24.190: D/CARLOZ(27942):             
08-25 12:56:24.190: D/CARLOZ(27942):         </div>
08-25 12:56:24.190: D/CARLOZ(27942):     </div>
08-25 12:56:24.190: D/CARLOZ(27942): </body>
08-25 12:56:24.190: D/CARLOZ(27942): </html>

2. Http POST访问网站

Post方式需要向网络传输一部分数据，同时具有输入流和输出流

3. HttpClient进行Get方式通信
通过HttpClient建立网络链接，使用HttpGet方法读取数据，并且通过Response获取Entity返回值。

<EditText
    android:id="@+id/et"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" />

<Button
    android:id="@+id/btnGetData"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/httpclient_get" />

<ScrollView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" >

    <TextView
        android:id="@+id/tvResult"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />
</ScrollView>

public void readNet(String url) {
    new AsyncTask<String, Void, String>() {

        @Override
        protected String doInBackground(String... params) {
            String urlString = params[0];

            HttpGet get = new HttpGet(urlString);
            try {
                HttpResponse response = client.execute(get);
                String value = EntityUtils.toString(response.getEntity());
                Log.d("CARLOZ", value);
                return value;
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            return null;
        }

        protected void onPostExecute(String result) {
            tv.setText(result);
        };
    }.execute(url);
}

readNet("http://carloz.duapp.com/search/?keywords=" + et.getText());

效果如下：

4. HttpClient进行Post方式通信

通过HttpClient建立网络链接，使用HttpPost方法传出数据与读取数据，传出和传入的数据都是Entity的子类。

布局与3一样

public void readNet(String url, String keyword) {
    new AsyncTask<String, Void, String>() {

        @Override
        protected String doInBackground(String... params) {
            String urlString = params[0];

            HttpPost post = new HttpPost(urlString);
            // StringEntity entity;
            List<BasicNameValuePair> list = new ArrayList<BasicNameValuePair>();
            list.add(new BasicNameValuePair("keywords", params[1]));
            try {
                // BasicNameValuePair 用于提交表单数据
                post.setEntity(new UrlEncodedFormEntity(list));
            } catch (UnsupportedEncodingException e1) {
                e1.printStackTrace();
            }

            try {
                HttpResponse response = client.execute(post);
                String value = EntityUtils.toString(response.getEntity());
                Log.d("CARLOZ", value);
                return value;
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            return null;
        }

        protected void onPostExecute(String result) {
            tv.setText(result);
        };
    }.execute(url, keyword);
}

readNet("http://carloz.duapp.com/search", et.getText().toString());

posted @ 2015-08-25 13:02 carlo-z 阅读(295) 评论(0) 编辑收藏举报

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