jsp때와 마찬가지로 데이터전송은 get방식과 post방식이 있습니다.
그래도 데이터가 공개되는 get방식보단 post방식을 사용하겠습니다.
먼저 login.jsp 이라는 jsp파일을 하나 생성합니다.
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%
request.setCharacterEncoding("euc-kr");
String name = request.getParameter("name");
%>
<% out.print(name); System.out.println("login.jsp 호출됨");%>
액티비티에서 데이터 name을 보낼 예정이고, 다시 name이라는 출력결과를 가져갈 예정입니다.
그리고 접근이 되면 'login.jsp 호출됨' 이라고 서버에 출력이 됩니다.
이제 서버와 연결이기 때문에
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
이 코드를 사용할 예정입니다. 안그러면 오류나요~
우선
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="@+id/btn_post"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="post"
/>
<TextView
android:id="@+id/tv_post"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text=""
/>
</LinearLayout>
MainActivity.java
package com.example.android_test1;
import java.util.ArrayList;
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.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.util.EntityUtils;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.os.StrictMode;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity implements OnClickListener {
TextView tv_post;
Button btn_post;
@SuppressLint({ "NewApi", "NewApi", "NewApi" })
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv_post = (TextView)findViewById(R.id.tv_post);
btn_post = (Button)findViewById(R.id.btn_post);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
btn_post.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String url = "http://xxx.xxx.xxx.xxx:xxxx/login.jsp";
HttpClient http = new DefaultHttpClient();
try {
ArrayList<NameValuePair> nameValuePairs =
new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("name", "유재석"));
HttpParams params = http.getParams();
HttpConnectionParams.setConnectionTimeout(params, 5000);
HttpConnectionParams.setSoTimeout(params, 5000);
HttpPost httpPost = new HttpPost(url);
UrlEncodedFormEntity entityRequest =
new UrlEncodedFormEntity(nameValuePairs, "EUC-KR");
httpPost.setEntity(entityRequest);
HttpResponse responsePost = http.execute(httpPost);
HttpEntity resEntity = responsePost.getEntity();
tv_post.setText( EntityUtils.toString(resEntity));
}catch(Exception e){e.printStackTrace();}
}
}
설명 생략....
