post get請求的運用----android篇
GET是從服務器上獲取數據，POST是向服務器傳送數據。get，post在PHP網絡編程中常常會運用到。 php
get post請求在Android如何運用呢？
html
GET是把參數數據隊列加到提交表單的ACTION屬性所指的URL中，值和表單內各個字段一一對應，在URL中能夠看到。
POST是經過HTTP post機制，將表單內各個字段與其內容放置在HTML HEADER內一塊兒傳送到ACTION屬性所指的URL地址。用戶看不到這個過程
next，
下面分別用Post和
GET
方法來實現
Android
應用的
人員登入
，首先咱們搭建一個服務器，這裏我使用WAMP環境，以使用ThinkPHP框架爲例。響應代碼以下（response code）
code： java
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<?php
namespace Home\Controller;
use Think\Controller;
class <a title="Android" href="
http://www.android-study.com/wangluobiancheng/628.html">Android</a>Controller extends Controller {
public function index()
{
//獲取帳號密碼
$id=I('username');
$pwd=I('password');
$User=M('user');
//查詢數據庫
$data = $User->where("NAME='$id' AND PASSWORD='$pwd' ")->find();
//登入成功
if($data)
{
$response = array('success' => true,'msg'=>'登入成功');
$response=json_encode($response);
echo $response;//返回json格式
}
//登入失敗
else
{
$response = array('success' => false,'msg'=>'帳號或密碼錯誤');
$response=json_encode($response);
echo $response;//返回json格式
}
}
}
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<uses-permission android:name="android.permission.INTERNET"></uses-permission>
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package com.dream.apm;
import android.app.Activity;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
public class MyActivity extends Activity {
//請求地址
private static String url="
http://10.0.2.2:8080/think/index.php/Home/<a title="Android" href="
http://www.android-study.com/wangluobiancheng/628.html">Android</a>";
public Button start;
public EditText username,password;
public URL http_url;
public String data;
public Handler handler;
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
//設置全屏
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
//去除應用程序標題
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
//設置豎屏
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
setContentView(R.layout.main);
start=(Button)findViewById(R.id.start_one);
username=(EditText)findViewById(R.id.username);
password=(EditText)findViewById(R.id.password);
//消息處理器
handler=new Handler(Looper.getMainLooper())
{
@Override
public void handleMessage(Message msg)
{
super.handleMessage(msg);
switch(msg.what)
{
//登入成功
case 1:
Toast.makeText(MyActivity.this, msg.getData().getString("msg"),
Toast.LENGTH_SHORT).show();
break;
//登入失敗
case 2:
Toast.makeText(MyActivity.this, msg.getData().getString("msg"),
Toast.LENGTH_SHORT).show();
break;
}
}
};
start.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//是否輸入帳號密碼
if(username.getText().toString().length()>0&&password.getText().toString().length()>0){
//子線程能夠獲取UI的值，不能更改
new Thread(new Runnable() {
@Override
public void run() {
try {
http_url=new URL(url);
if(http_url!=null)
{
//打開一個HttpURLConnection鏈接
HttpURLConnection conn = (HttpURLConnection) http_url.openConnection();
conn.setConnectTimeout(5* 1000);//設置鏈接超時
conn.setRequestMethod("<a title="POST" href="http://www.android-study.com/wangluobiancheng/628.html">POST</a>");//以get方式發起請求
//容許輸入輸出流
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);//使用Post方式不能使用緩存
//獲取帳號密碼
String params = "username=" + username.getText().toString()
+ "&password=" + password.getText().toString();
//設置請求體的類型是文本類型
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
//設置請求體的長度--字節長度
conn.setRequestProperty("Content-Length",String.valueOf(params.getBytes().length) );
//發送post參數
BufferedWriter bw=new BufferedWriter(newOutputStreamWriter(conn.getOutputStream()));
bw.write(params);
bw.close();
//接收服務器響應
if (conn.getResponseCode() == 200) {
InputStream is = conn.getInputStream();//獲得網絡返回的輸入流
BufferedReader buf=new BufferedReader(newInputStreamReader(is));//轉化爲字符緩衝流
data=buf.readLine();
buf.close();is.close();
//判斷登入結果
analyse(data);
}
}
} catch( Exception e) {
e.printStackTrace();
}
}
}).start();
}
else
{
Toast.makeText(MyActivity.this, "請完整輸入帳號密碼",
Toast.LENGTH_SHORT).show();
}
}
});
}
public void analyse (String data)
{
System.out.println(data);
try {
JSONObject json_data=new JSONObject(data);
Boolean state=json_data.getBoolean("success");
String msg=json_data.getString("msg");
//登入成功
if(state)
{
//發送消息
Message message= new Message();
message.what=1;
Bundle temp = new Bundle();
temp.putString("msg",msg);
message.setData(temp);
handler.sendMessage(message);
}
//登入失敗
else
{
Message message= new Message();
message.what=2;
Bundle temp = new Bundle();
temp.putString("msg",msg);
message.setData(temp);
handler.sendMessage(message);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}
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package com.dream.apm;
import android.app.Activity;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
public class MyActivity extends Activity {
public Button start;
public EditText username,password;
public URL http_url;
public String data;
public Handler handler;
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
//設置全屏
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
//去除應用程序標題
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
//設置豎屏
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
setContentView(R.layout.main);
start=(Button)findViewById(R.id.start_one);
username=(EditText)findViewById(R.id.username);
password=(EditText)findViewById(R.id.password);
//消息處理器
handler=new Handler(Looper.getMainLooper())
{
@Override
public void handleMessage(Message msg)
{
super.handleMessage(msg);
switch(msg.what)
{
//登入成功
case 1:
Toast.makeText(MyActivity.this, msg.getData().getString("msg"),
Toast.LENGTH_SHORT).show();
break;
//登入失敗
case 2:
Toast.makeText(MyActivity.this, msg.getData().getString("msg"),
Toast.LENGTH_SHORT).show();
break;
}
}
};
start.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//是否輸入帳號密碼
if(username.getText().toString().length()>0&&password.getText().toString().length()>0){
//子線程能夠獲取UI的值，不能更改
new Thread(new Runnable() {
@Override
public void run() {
try {
//請求地址--
String url="
http://10.0.2.2:8080/think/index.php/Home/<a title="Android" href="
http://www.android-study.com/wangluobiancheng/628.html">Android</a>?"+"username=" + URLEncoder.encode(username.getText().toString(), "UTF-8")
+ "&password=" + URLEncoder.encode(password.getText().toString(), "UTF-8");
http_url=new URL(url);
if(http_url!=null)
{
//打開一個HttpURLConnection鏈接
HttpURLConnection conn = (HttpURLConnection) http_url.openConnection();
conn.setConnectTimeout(5* 1000);//設置鏈接超時
conn.setRequestMethod("<a title="GET" href="http://www.android-study.com/wangluobiancheng/628.html">GET</a>");//以get方式發起請求
//容許輸入流
conn.setDoInput(true);
//接收服務器響應
if (conn.getResponseCode() == 200) {
InputStream is = conn.getInputStream();//獲得網絡返回的輸入流
BufferedReader buf=new BufferedReader(newInputStreamReader(is));//轉化爲字符緩衝流
data=buf.readLine();
buf.close();is.close();
//判斷登入結果
analyse(data);
}
}
} catch( Exception e) {
e.printStackTrace();
}
}
}).start();
}
else
{
Toast.makeText(MyActivity.this, "請完整輸入帳號密碼",
Toast.LENGTH_SHORT).show();
}
}
});
}
public void analyse (String data)
{
System.out.println(data);
try {
JSONObject json_data=new JSONObject(data);
Boolean state=json_data.getBoolean("success");
String msg=json_data.getString("msg");
//登入成功
if(state)
{
//發送消息
Message message= new Message();
message.what=1;
Bundle temp = new Bundle();
temp.putString("msg",msg);
message.setData(temp);
handler.sendMessage(message);
}
//登入失敗
else
{
Message message= new Message();
message.what=2;
Bundle temp = new Bundle();
temp.putString("msg",msg);
message.setData(temp);
handler.sendMessage(message);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
} 數據庫 能夠看到界面啦 編程 |
OK，adiOS json
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