[android] 与PHP的session进行交互demo

2023-08-02 17:00:34

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);

}

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