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。

 package com.wangjialin.internet.userInformation.service;

 import java.net.HttpURLConnection;
 import java.net.URL;
 import java.net.URLEncoder;
 import java.util.HashMap;
 import java.util.Map;

 public class UserInformationService {

     public static boolean save(String title, String length) throws Exception{

         String path = "http://192.168.1.103:8080/ServerForGETMethod/ServletForGETMethod";
         Map<String, String> params = new HashMap<String, String>();
         params.put("name", title);
         params.put("age", length);

         return sendGETRequest(path, params, "UTF-8");
     }    

     /**
      * 发送GET请求
      * @param path 请求路径
      * @param params 请求参数
      * @return
      */
     private static boolean sendGETRequest(String path, Map<String, String> params, String encoding) throws Exception{
         // http://192.178.1.103:8080/ServerForGETMethod/ServletForGETMethod?title=xxxx&length=90
         StringBuilder sb = new StringBuilder(path);

         if(params != null && !params.isEmpty()){
             sb.append("?");
             for(Map.Entry<String, String> entry : params.entrySet()){
                 sb.append(entry.getKey()).append("=");
                 sb.append(URLEncoder.encode(entry.getValue(), encoding));
                 sb.append("&");
             }
             sb.deleteCharAt(sb.length() - 1);
         }
         HttpURLConnection conn = (HttpURLConnection) new URL(sb.toString()).openConnection();
         conn.setConnectTimeout(5000);
         conn.setRequestMethod("GET");

         if(conn.getResponseCode() == 200){
             return true;
         }
         return false;
     }
 }

UserInformationActivity

 package com.wangjialin.internet.userInformation.get;

 import android.app.Activity;
 import android.os.Bundle;
 import android.view.View;
 import android.widget.EditText;
 import android.widget.Toast;

 import com.wangjialin.internet.userInformation.service.UserInformationService;

 public class UserInformationActivity extends Activity {

      private EditText titleText;
         private EditText lengthText;

         @Override
         public void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
             setContentView(R.layout.main);

             titleText = (EditText) this.findViewById(R.id.title);
             lengthText = (EditText) this.findViewById(R.id.length);
         }

         public void save(View v){
             String title = titleText.getText().toString();
             String length = lengthText.getText().toString();
             try {
                 boolean result = false;

                 result = UserInformationService.save(title, length);

                 if(result){
                     Toast.makeText(this, R.string.success, 1).show();
                 }else{
                     Toast.makeText(this, R.string.fail, 1).show();
                 }
             } catch (Exception e) {
                 e.printStackTrace();
                 Toast.makeText(this, R.string.fail, 1).show();
             }
         }
 }