android 實現簡單登入

android 實現簡單登入

一直知道WEB登入之後是通過session保持回話的，現在安卓卻不知道怎麼弄了。

研究了一下，記錄一下。直接上代碼：

伺服器端：

index.jsp

<%@page import="java.io.PrintWriter"%><%@page import="com.sun.org.apache.xml.internal.serialize.Printer"%><%@page import="com.google.gson.JsonObject"%><%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><%//測試，只用一個使用者名稱登入，不設密碼String userName = request.getParameter("userName");PrintWriter pw = response.getWriter();//只要使用者名稱符合集可登入if(userName.equals("miquan")) {//返回安卓端的jsonJsonObject json = new JsonObject();json.addProperty("success", true);json.addProperty("sessionId", request.getSession().getId());//儲存在伺服器端的sessionrequest.getSession().setAttribute("userName", "I am a test name.");pw.write(json.toString());pw.flush();} else {JsonObject obj = new JsonObject();obj.addProperty("success", false);pw.write(obj.toString());pw.flush();}%>

session.jsp

<%@page import="javax.websocket.Session"%><%@page import="java.io.PrintWriter"%><%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><%PrintWriter pw = response.getWriter();//擷取到同一個session，而不是從新產生一個session，這樣就達到我要的效果了pw.write((String)session.getAttribute("userName"));pw.flush();%>

安卓端：

//登入btnLogin.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {FinalHttp fh = new FinalHttp();fh.get("http://172.27.35.1:8080/login/index.jsp?userName=miquan", new AjaxCallBack() {@Overridepublic void onSuccess(Object t) {//擷取返回來的jsonString str = t.toString();str = str.trim();try {JSONObject obj = new JSONObject(str);boolean success = obj.getBoolean("success");//登入成功if(success) {//app = (MyApplication) this.getApplication();//MyApplication添加了屬性sessionId和isLoginapp.setLogin(true);app.setSessionId(obj.getString("sessionId"));Toast.makeText(app, "登入成功", Toast.LENGTH_SHORT).show();} else {Toast.makeText(app, "登入失敗", Toast.LENGTH_SHORT).show();}} catch (JSONException e) {e.printStackTrace();}super.onSuccess(t);}@Overridepublic void onFailure(Throwable t, int errorNo,String strMsg) {Log.e("miquan", "failure  " + strMsg);super.onFailure(t, errorNo, strMsg);}});}});
//測試btnSession.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {FinalHttp fh = new FinalHttp();//添加session，連請求一起發送，這裡伺服器用的是java開發的fh.addHeader("Cookie", "JSESSIONID=" + app.getSessionId());fh.get("http://172.27.35.1:8080/login/session.jsp", new AjaxCallBack() {@Overridepublic void onSuccess(Object t) {Log.e("miquan", t.toString());super.onSuccess(t);}@Overridepublic void onFailure(Throwable t, int errorNo,String strMsg) {Log.e("miquan", "failure  " + strMsg);super.onFailure(t, errorNo, strMsg);}});}});
馬上下班了，不多寫。。。