Android 开发工具类 28

Android 开发工具类 28_sendGETRequest

以 GET 方式上传数据，小于 2K，且安全性要求不高的情况下。

 1 package com.wangjialin.internet.userInformation.service;
 2 
 3 import java.net.HttpURLConnection;
 4 import java.net.URL;
 5 import java.net.URLEncoder;
 6 import java.util.HashMap;
 7 import java.util.Map;
 8 
 9 public class UserInformationService {
10     
11     public static boolean save(String title, String length) throws Exception{
12         
13         String path = "http://192.168.1.103:8080/ServerForGETMethod/ServletForGETMethod";
14         Map<String, String> params = new HashMap<String, String>();
15         params.put("name", title);
16         params.put("age", length);
17         
18         return sendGETRequest(path, params, "UTF-8");
19     }    
20     
21     /**
22      * 发送GET请求
23      * @param path 请求路径
24      * @param params 请求参数
25      * @return
26      */
27     private static boolean sendGETRequest(String path, Map<String, String> params, String encoding) throws Exception{
28         // http://192.178.1.103:8080/ServerForGETMethod/ServletForGETMethod?title=xxxx&length=90
29         StringBuilder sb = new StringBuilder(path);
30         
31         if(params != null && !params.isEmpty()){
32             sb.append("?");
33             for(Map.Entry<String, String> entry : params.entrySet()){
34                 sb.append(entry.getKey()).append("=");
35                 sb.append(URLEncoder.encode(entry.getValue(), encoding));
36                 sb.append("&");
37             }
38             sb.deleteCharAt(sb.length() - 1);
39         }
40         HttpURLConnection conn = (HttpURLConnection) new URL(sb.toString()).openConnection();
41         conn.setConnectTimeout(5000);
42         conn.setRequestMethod("GET");
43         
44         if(conn.getResponseCode() == 200){
45             return true;
46         }
47         return false;
48     }
49 }

UserInformationActivity

 1 package com.wangjialin.internet.userInformation.get;
 2 
 3 import android.app.Activity;
 4 import android.os.Bundle;
 5 import android.view.View;
 6 import android.widget.EditText;
 7 import android.widget.Toast;
 8 
 9 import com.wangjialin.internet.userInformation.service.UserInformationService;
10 
11 public class UserInformationActivity extends Activity {
12     
13      private EditText titleText;
14         private EditText lengthText;
15         
16         @Override
17         public void onCreate(Bundle savedInstanceState) {
18             super.onCreate(savedInstanceState);
19             setContentView(R.layout.main);
20             
21             titleText = (EditText) this.findViewById(R.id.title);
22             lengthText = (EditText) this.findViewById(R.id.length);
23         }
24         
25         public void save(View v){
26             String title = titleText.getText().toString();
27             String length = lengthText.getText().toString();
28             try {
29                 boolean result = false;
30                 
31                 result = UserInformationService.save(title, length);
32             
33                 if(result){
34                     Toast.makeText(this, R.string.success, 1).show();
35                 }else{
36                     Toast.makeText(this, R.string.fail, 1).show();
37                 }
38             } catch (Exception e) {
39                 e.printStackTrace();
40                 Toast.makeText(this, R.string.fail, 1).show();
41             }
42         }
43 }