android http 本地 web服务(tomcat)

最新推荐文章于 2024-06-15 23:19:46 发布

转载最新推荐文章于 2024-06-15 23:19:46 发布 · 106 阅读

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原文链接：https://my.oschina.net/wjgood/blog/42487

文章标签：

#移动开发 #java

本文详细介绍了Android应用中如何进行网络请求及配置网络权限，包括使用DefaultHttpClient进行POST请求，封装数据，并处理响应结果。

1. Android代码

public class JobActivity extends Activity {
	private TextView show;
	private EditText txt;
	private Button btn;
	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        ConnectivityManager con=(ConnectivityManager)getSystemService(Activity.CONNECTIVITY_SERVICE);
        boolean wifi=con.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting();
        boolean internet=con.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).isConnectedOrConnecting();
        if(wifi ){
        	show = (TextView)findViewById(R.id.show);
            txt = (EditText)findViewById(R.id.txt);
            btn = (Button)findViewById(R.id.btn);
            btn.setOnClickListener(new OnClickListener() {
        	@Override
        	   public void onClick(View v) {
        		show.setText("dianjile");
        	    dopost(txt.getText().toString());
        	   }
        	  });
        }
    }
    
    private void dopost(String val){
        //封装数据
        Map<String, String> parmas = new HashMap<String, String>();
        parmas.put("name", val);

DefaultHttpClient client = new DefaultHttpClient();//http客户端

//这个地方需要注意：如果是调试器 10.0.2.2 本机地址；真机上：则是路由器中电脑地址


        HttpPost httpPost = new HttpPost("http://192.168.2.100:80/loowj/android$Android$go");
        ArrayList<BasicNameValuePair> pairs = new ArrayList<BasicNameValuePair>();
        if(parmas != null){
            Set<String> keys = parmas.keySet();
            for(Iterator<String> i = keys.iterator(); i.hasNext();) {
                 String key = (String)i.next();
                 pairs.add(new BasicNameValuePair(key, parmas.get(key)));
            }
       }
       
     try {
    	 	UrlEncodedFormEntity p_entity = new UrlEncodedFormEntity(pairs, "utf-8");
            /*
             *  将POST数据放入HTTP请求
             */
            httpPost.setEntity(p_entity);
            /*
             *  发出实际的HTTP POST请求
              */
            TextView tv = (TextView)findViewById(R.id.state);
            tv.setText("start post:");
            HttpResponse response = client.execute(httpPost);
            tv.setText((response.getStatusLine().getStatusCode() +""));
            	
            HttpEntity entity = response.getEntity();
            InputStream content = entity.getContent();
            String returnConnection = convertStreamToString(content);
            show.setText(returnConnection);
     } catch (IllegalStateException e) {
      e.printStackTrace();
     } catch (IOException e) {
      e.printStackTrace();
     }
    }

     private String convertStreamToString(InputStream is) {
      BufferedReader reader = new BufferedReader(new InputStreamReader(is));
            StringBuilder sb = new StringBuilder();
            String line = null;
            try {
                 while ((line = reader.readLine()) != null) {
                      sb.append(line);
                 }
            } catch (IOException e) {
                 e.printStackTrace();
            } finally {
                 try {
                      is.close();
                 } catch (IOException e) {
                      e.printStackTrace();
                 }
            }
            return sb.toString();
    }
}

2.android 配置文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.loowj.core"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="10" />

     //注意加上网络权限     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
	<uses-permission android:name="android.permission.INTERNET"/>
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name="loowj.JobActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

转载于:https://my.oschina.net/wjgood/blog/42487