[android] 与PHP的session进行交互demo

从MainActivity跳转到MailIndexActivity,第一个请求接口设置session,第二个activity请求接口获取session

java代码中获取header头里面的Set-Cookie

请求的时候,设置头信息Cookie,就可以相当于浏览器获取session

MainActivity.java

package com.tsh.test;

import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {
public Button loginBtn;
public TextView loginUserName;
public TextView loginPassword;
public static String API="http://mail.sina.net/test.php";
public LoginHandler loginHandler;
public String sessionIdString;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//获取View对象
loginBtn=(Button) findViewById(R.id.loginBtn);
loginUserName=(TextView) findViewById(R.id.loginUsername);
loginPassword=(TextView) findViewById(R.id.loginPassword);
//给View对象设置点击事件
loginBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
//开启新线程
Thread loginThread=new Thread(new LoginRunable());
loginThread.start();
}
});
loginHandler=new LoginHandler();
}
//实现Runable接口,开启新线程
class LoginRunable implements Runnable{
@Override
public void run() {
try {
URL url=new URL(API);
HttpURLConnection http=(HttpURLConnection) url.openConnection();
http.setRequestMethod("POST");
http.setDoInput(true);
http.setDoOutput(true);

OutputStream ops=http.getOutputStream();
PrintWriter pw=new PrintWriter(ops);
String username=loginUserName.getText().toString();
String password=loginPassword.getText().toString();
pw.write("email="+username+"&psw="+password+"&loginfrom=app&output=json");
pw.flush();

String responseCookie = http.getHeaderField("Set-Cookie");
if (responseCookie != null) {
sessionIdString = responseCookie.substring(0, responseCookie.indexOf(";"));
}

InputStream ins=http.getInputStream();
byte[] buffer = new byte[1024];
int length=0;
StringBuilder sb=new StringBuilder();
while((length=ins.read(buffer))!=-1){
sb.append(new String(buffer,0,length));
}

Message msg=new Message();
msg.what=1;
msg.obj=sb.toString();
loginHandler.sendMessage(msg);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}
}
//传递消息的handle
class LoginHandler extends Handler{
@Override
public void handleMessage(Message msg) {
String loginResponse=(String) msg.obj;
System.out.println(loginResponse);
Toast.makeText(MainActivity.this, loginResponse, 10).show();
Intent intent=new Intent(MainActivity.this, MailIndexActivity.class);
intent.putExtra("PHPSESSIONID",sessionIdString);
startActivity(intent);
}
}
}

MailIndexActivity.java

package com.tsh.test;

import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.Toast;

public class MailIndexActivity extends Activity {
public static String API="http://mail.sina.net/test.php";
public Handler sessionHandler;
public String sessionIdString;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

Intent intent = getIntent();
sessionIdString= intent.getStringExtra("PHPSESSIONID");

setContentView(R.layout.mail_index);
sessionHandler=new SessionHandler();
Thread sessionThread=new Thread(new SessionRunable());
sessionThread.start();

}
class SessionRunable implements Runnable{

@Override
public void run() {
URL url;
try {
url = new URL(API);
HttpURLConnection http=(HttpURLConnection) url.openConnection();
http.setRequestProperty("Cookie", sessionIdString);
InputStream ins=http.getInputStream();
byte[] buffer = new byte[1024];
int length=0;
StringBuilder sb=new StringBuilder();
while((length=ins.read(buffer))!=-1){
sb.append(new String(buffer,0,length));
}

Message msg=new Message();
msg.what=1;
msg.obj=sb.toString();
sessionHandler.sendMessage(msg);
} catch (Exception e) {
e.printStackTrace();
}

}
}
class SessionHandler extends Handler{
@Override
public void handleMessage(Message msg) {
String str=(String) msg.obj;
System.out.println("222");
System.out.println(str);
Toast.makeText(MailIndexActivity.this, str, 10).show();
}
}
}

PHP文件:

<?php
session_start();
if(empty($_SESSION)){
echo "设置session";
$_SESSION['name']=1;
echo session_id();
}else{
echo "获取session";
print_r($_SESSION);
}