get방식으로 서버에 요청

get방식으로 서버에 요청

안드로이드 버전을 구버전으로 낮춰서 작업함. (API 19)

1. 레이아웃

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.progdv.app2_network.MainActivity">

    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <EditText
            android:id="@+id/userId"
            android:layout_width="94dp"
            android:layout_height="wrap_content"
            android:ems="10"
            android:hint="아이디" />

        <EditText
            android:id="@+id/pwd"
            android:layout_width="110dp"
            android:layout_height="wrap_content"
            android:ems="10"
            android:hint="비밀번호" />
        
        <Button
            android:id="@+id/login"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="로그인"
            />

    </LinearLayout>

    <TextView
        android:id="@+id/result"
        android:text="로그인 응답 결과 출력"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

2. 메인 액티비티

package com.progdv.app2_network;

import android.app.Activity;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;

public class MainActivity extends Activity {
    EditText userId, pwd;
    Button login;
    TextView result;

    String tmpResult;

    Handler handler = new Handler();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        userId = (EditText)findViewById(R.id.userId);
        pwd = (EditText)findViewById(R.id.pwd);
        login = (Button)findViewById(R.id.login);
        result = (TextView)findViewById(R.id.result);

        login.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                final MyDialogFragment fragment = MyDialogFragment.newInstance();
                fragment.show(getFragmentManager(), "TAG");

                String id = userId.getText().toString();
                String password = pwd.getText().toString();

                ArrayList<NameValuePair> list = new ArrayList<NameValuePair>();

                list.add(new BasicNameValuePair("userid", id));
                list.add(new BasicNameValuePair("passwd", password));

                final String urlPath = "http://211.183.9.67:8095/loginTest/login.jsp?"
                        + URLEncodedUtils.format(list, "UTF-8");

                Thread thread = new Thread(new Runnable() {
                    @Override
                    public void run() {
                        InputStream is = requestGet(urlPath);
                        tmpResult = streamToString(is);

                        handler.post(new Runnable() {
                            @Override
                            public void run() {
                                result.setText(tmpResult);
                                fragment.dismiss();
                            }
                        });
                    }
                });

                thread.start();
            }
        });
    }

    public InputStream requestGet(String urlPath){

        try {
            HttpClient client = new DefaultHttpClient();
            HttpGet request = new HttpGet(urlPath);
            HttpResponse response = client.execute(request);

            HttpEntity entity = response.getEntity();
            InputStream is = entity.getContent();
            return is;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }

    public static class MyDialogFragment extends DialogFragment {

        public static MyDialogFragment newInstance(){
            return new MyDialogFragment();
        }

        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
            ProgressDialog dialog = new ProgressDialog(getActivity());
            dialog.setTitle("네트워크");
            dialog.setMessage("요청중...");
            dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);

            return dialog;
        }
    }

    private String streamToString(InputStream is){
        StringBuffer buffer = new StringBuffer();


        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(is));
            String str = reader.readLine();
            while (str != null){
                buffer.append(str);
                str = reader.readLine();
            }

            reader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

        return buffer.toString();
    }
}

3. 서버 구축

이클립스에서 다이나믹 웹 프로젝트 생성, 위에서 설정한대로 login.jsp라는 파일을 생성한다.

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<!DOCTYPE html>

<html>

<head>

<meta charset="UTF-8">

<title>안드로이드 연동 테스트</title>

</head>

<body>

<%

String id = request.getParameter("userId");

String pwd = request.getParameter("passwd");

String msg = "아이디 : " + id + ", 비밀번호 : " + pwd;

%>

</body>

</html>