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回復(fù)內(nèi)容:
? ??? ?? PHP ???? thinkajax返回頁(yè)面session信息(PHP)

thinkajax返回頁(yè)面session信息(PHP)

Jul 06, 2016 pm 01:52 PM
php thinkphp

1.在嘗試仿寫(xiě)一個(gè)登錄程序。這個(gè)登錄表單在首頁(yè),要求登錄成功后在首頁(yè)使用ajax無(wú)刷新返回用戶(hù)名信息(保存的session值)以及自動(dòng)隱藏表單?,F(xiàn)在通過(guò)js的確能返回用戶(hù)信息,但是只要刷新,用戶(hù)信息和表單就會(huì)恢復(fù)原狀了,怎么可以維持長(zhǎng)久直到用戶(hù)點(diǎn)擊注銷(xiāo)或session消失后?
2.我通過(guò)F12的xhr模式能看到返回的用戶(hù)信息,通過(guò)jquery的append方法和remove()也確實(shí)可以實(shí)現(xiàn),不過(guò)問(wèn)題是刷新后信息不存在和表單恢復(fù)原狀。
2.關(guān)鍵代碼:
(1)IndexController.class.php:

<code>public function checkUser(){
    //接收值
    $userName=$_POST['username'];
    $userPass=$_POST['userpass'];
    //空值檢測(cè)->function
    if(!trim($userName)){
      return show(0,'用戶(hù)名不能為空');
    }
    if(!trim($userPass)){
      return show(0,'密碼不能為空');
    }
    //對(duì)用戶(hù)密碼真實(shí)性進(jìn)行檢驗(yàn)->Model
    $res=D("Stuser")->getUser($userName);
    if(!$res['username']){
      return show(0,'用戶(hù)名不存在');
    }
    //密碼處理->function
    if($res['userpass']!=getMd5Pass($userPass)){
      return show(0,'密碼不正確');
    }
    //echo $res['username'];
    //$_SESSION('username',$res);  //設(shè)置session
    $_SESSION['username']=$res;
    //dump($username) ;
    //var_dump($username);
    return show(1,'登錄成功',$this->getSessionNames());
  }
  //判斷session情況->index
  public function getSessionNames(){
    if($_SESSION['username']['username']){
      $username = $_SESSION['username']['username'];
      //$a=$this->ajaxReturn($username);
      //$this->assign('username',$username);
      return $username;
    }
  }請(qǐng)輸入代碼</code>

(2)function.php

<code>function show($status,$message,$data=array()){
    $result=array(
      'status' => $status,
      'message' => $message,
      'data' => $data,
    );
    //JSON編碼數(shù)據(jù)
    exit(json_encode($result));
  }請(qǐng)輸入代碼</code>

(3)login.js

<code>var login = {
  checkUser : function() {
      //獲取登錄頁(yè)面中的用戶(hù)名、密碼
      var userName=$('input[name="username"]').val();
      var userPass=$('input[name="userpass"]').val();

      if(!userName) {
        dialog.error("用戶(hù)名不能為空");
      }

      if(!userPass) {
        dialog.error("密碼不能為空");
      }

      var url="/stfjzd-12/index.php/Home/Index/checkUser";
      var data={'username':userName,'userpass':userPass};
      //執(zhí)行異步請(qǐng)求
      $.post(url,data,function(result){
        if(result.status==0) {
            return dialog.error(result.message);
        }
        if(result.status==1) {
        if(data!=""){
            //alert(data.username);
            $('#index_form2').remove();
            $('#test').append(data.username);
        }
            return dialog.success(result.message,"/stfjzd-12/index.php/Home/Index/checkUser");
        //alert(result.data['username']) ;
        }
      },'JSON');

  }
}請(qǐng)輸入代碼</code>

回復(fù)內(nèi)容:

1.在嘗試仿寫(xiě)一個(gè)登錄程序。這個(gè)登錄表單在首頁(yè),要求登錄成功后在首頁(yè)使用ajax無(wú)刷新返回用戶(hù)名信息(保存的session值)以及自動(dòng)隱藏表單?,F(xiàn)在通過(guò)js的確能返回用戶(hù)信息,但是只要刷新,用戶(hù)信息和表單就會(huì)恢復(fù)原狀了,怎么可以維持長(zhǎng)久直到用戶(hù)點(diǎn)擊注銷(xiāo)或session消失后?
2.我通過(guò)F12的xhr模式能看到返回的用戶(hù)信息,通過(guò)jquery的append方法和remove()也確實(shí)可以實(shí)現(xiàn),不過(guò)問(wèn)題是刷新后信息不存在和表單恢復(fù)原狀。
2.關(guān)鍵代碼:
(1)IndexController.class.php:

<code>public function checkUser(){
    //接收值
    $userName=$_POST['username'];
    $userPass=$_POST['userpass'];
    //空值檢測(cè)->function
    if(!trim($userName)){
      return show(0,'用戶(hù)名不能為空');
    }
    if(!trim($userPass)){
      return show(0,'密碼不能為空');
    }
    //對(duì)用戶(hù)密碼真實(shí)性進(jìn)行檢驗(yàn)->Model
    $res=D("Stuser")->getUser($userName);
    if(!$res['username']){
      return show(0,'用戶(hù)名不存在');
    }
    //密碼處理->function
    if($res['userpass']!=getMd5Pass($userPass)){
      return show(0,'密碼不正確');
    }
    //echo $res['username'];
    //$_SESSION('username',$res);  //設(shè)置session
    $_SESSION['username']=$res;
    //dump($username) ;
    //var_dump($username);
    return show(1,'登錄成功',$this->getSessionNames());
  }
  //判斷session情況->index
  public function getSessionNames(){
    if($_SESSION['username']['username']){
      $username = $_SESSION['username']['username'];
      //$a=$this->ajaxReturn($username);
      //$this->assign('username',$username);
      return $username;
    }
  }請(qǐng)輸入代碼</code>

(2)function.php

<code>function show($status,$message,$data=array()){
    $result=array(
      'status' => $status,
      'message' => $message,
      'data' => $data,
    );
    //JSON編碼數(shù)據(jù)
    exit(json_encode($result));
  }請(qǐng)輸入代碼</code>

(3)login.js

<code>var login = {
  checkUser : function() {
      //獲取登錄頁(yè)面中的用戶(hù)名、密碼
      var userName=$('input[name="username"]').val();
      var userPass=$('input[name="userpass"]').val();

      if(!userName) {
        dialog.error("用戶(hù)名不能為空");
      }

      if(!userPass) {
        dialog.error("密碼不能為空");
      }

      var url="/stfjzd-12/index.php/Home/Index/checkUser";
      var data={'username':userName,'userpass':userPass};
      //執(zhí)行異步請(qǐng)求
      $.post(url,data,function(result){
        if(result.status==0) {
            return dialog.error(result.message);
        }
        if(result.status==1) {
        if(data!=""){
            //alert(data.username);
            $('#index_form2').remove();
            $('#test').append(data.username);
        }
            return dialog.success(result.message,"/stfjzd-12/index.php/Home/Index/checkUser");
        //alert(result.data['username']) ;
        }
      },'JSON');

  }
}請(qǐng)輸入代碼</code>

如果你用tp寫(xiě)的在模板中用{$Think.session.username}這個(gè)賦值,通過(guò)js賦值刷新肯定沒(méi)有了

頁(yè)面搞個(gè)隱藏域放信息就好啦,session信息在頁(yè)面上只有你登錄成功以后會(huì)去請(qǐng)求,頁(yè)面刷新是不會(huì)觸發(fā)請(qǐng)求的

<code>public function index(){ //你顯示頁(yè)面的函數(shù)
    $user=$this->getSessionNames();
    $this->assing('user',$user);
    ...
}</code>
<code>//index.html
<script>
    $(function(){
        var username="{{$user}}";
        if(username != ""){
            $('#index_form2').remove();
            $('#test').append(username);
        }
    })
    
</script></code>
<code> //login.js</code>

樓主這個(gè)問(wèn)題,好像也不是很難嘛!把你存放用戶(hù)信息的表單弄成動(dòng)態(tài)的就可以了吧,具體如下:

<code>//這個(gè)是php的處理代碼塊
if($this->chen_user()) {   //這個(gè)是驗(yàn)證是否登陸成功
    $_SESSION['username'] = $username;  //這里把用戶(hù)信息存入session
    $_SESSION['sex] = $sex;
}

//這個(gè)是前端顯示的
<?php if($_SESSION['username']) { ?>  如果session中有username的值就輸出用戶(hù)信息 沒(méi)有就不輸出
    <td>姓名</td>
<td><?php echo $_SESSION['username'];?></td>

<?php } ?></code>

你看看是不是這樣?

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