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();
            }
        }
}