我是代码点火器的新手，我遵循了一个教程，其中编写了所有代码http://www.tutorialspoint.com/codeigniter/working_with_database.htm我一步一步地遵循它包含的内容，但是当使用 URL localhost/student/index.php/stud 访问我在 XAMPP 中的页面时，它显示了我们期望的输出，但在单击编辑或删除链接时，它将指向 localhost
/new/localhost/new/index.php/stud/delete/1 和 localhost/new/localhost/new/index.php/stud/edit/1 的 url，显示 404 错误我的托勒Stud_controller
<?php
defined('BASEPATH') or exit('no direct access script');
class Stud_controller extends CI_Controller {
function __construct() {
parent::__construct();
$this->load->helper('url');
$this->load->database();
}
public function index() {
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->helper('url');
$this->load->view('Stud_view',$data);
}
public function add_student_view() {
$this->load->helper('form');
$this->load->view('Stud_add');
}
public function add_student() {
$this->load->model('Stud_Model');
$data = array(
'roll_no' => $this->input->post('roll_no'),
'name' => $this->input->post('name')
);
$this->Stud_Model->insert($data);
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->view('Stud_view',$data);
}
public function update_student_view() {
$this->load->helper('form');
$roll_no = $this->uri->segment('3');
$query = $this->db->get_where("stud",array("roll_no"=>$roll_no));
$data['records'] = $query->result();
$data['old_roll_no'] = $roll_no;
$this->load->view('Stud_edit',$data);
}
public function update_student(){
$this->load->model('Stud_Model');
$data = array(
'roll_no' => $this->input->post('roll_no'),
'name' => $this->input->post('name')
);
$old_roll_no = $this->input->post('old_roll_no');
$this->Stud_Model->update($data,$old_roll_no);
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->view('Stud_view',$data);
}
public function delete_student() {
$this->load->model('Stud_Model');
$roll_no = $this->uri->segment('3');
$this->Stud_Model->delete($roll_no);
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->view('Stud_view',$data);
}
}
?>
我的模型Stud_Model
function __construct() {
parent::__construct();
}
public function insert($data) {
if ($this->db->insert("stud", $data)) {
return true;
}
}
public function delete($roll_no) {
if ($this->db->delete("stud", "roll_no = ".$roll_no)) {
return true;
}
}
public function update($data,$old_roll_no) {
$this->db->set($data);
$this->db->where("roll_no", $old_roll_no);
$this->db->update("stud", $data);
}
}
?>
我的视图stud_add
<html>
<head>
<meta charset = "utf-8">
<title>Students Example</title>
</head>
<body>
<form method = "" action = "">
<?php
echo form_open('Stud_controller/add_student');
echo form_label('Roll No.');
echo form_input(array('id'=>'roll_no','name'=>'roll_no'));
echo "<br/>";
echo form_label('Name');
echo form_input(array('id'=>'name','name'=>'name'));
echo "<br/>";
echo form_submit(array('id'=>'submit','value'=>'Add'));
echo form_close();
?>
</form>
Student_Edit
<!DOCTYPE html>
<html lang = "en">
<head>
<meta charset = "utf-8">
<title>Students Example</title>
</head>
<body>
<form method = "" action = "">
<?php
echo form_open('Stud_controller/update_student');
echo form_hidden('old_roll_no',$old_roll_no);
echo form_label('Roll No.');
echo form_input(array('id'=>'roll_no',
'name'=>'roll_no','value'=>$records[0]>roll_no));
echo "<br/>";
echo form_label('Name');
echo form_input(array('id'=>'name','name'=>'name',
'value'=>$records[0]->name));
echo "<br/>";
echo form_submit(array('id'=>'submit','value'=>'Edit'));
echo form_close();
?>
</form>
Stud_view
<!DOCTYPE html>
<html lang = "en">
<head>
<meta charset = "utf-8">
<title>Students Example</title>
</head>
<body>
<a href = "<?php echo base_url(); ?>
index.php/stud/add_view">Add</a>
<table border = "1">
<?php
$i = 1;
echo "<tr>";
echo "<td>Sr#</td>";
echo "<td>Roll No.</td>";
echo "<td>Name</td>";
echo "<td>Edit</td>";
echo "<td>Delete</td>";
echo "<tr>";
foreach($records as $r) {
echo "<tr>";
echo "<td>".$i++."</td>";
echo "<td>".$r->roll_no."</td>";
echo "<td>".$r->name."</td>";
echo "<td><a href = '".base_url()."index.php/stud/edit/"
.$r->roll_no."'>Edit</a></td>";
echo "<td><a href = '".base_url()."index.php/stud/delete/"
.$r->roll_no."'>Delete</a></td>";
echo "<tr>";
}
?>
</table>
在 application/config/routes 中.php添加以下行：
/*******学生路线**
$route['stud'] = "Stud_controller";
$route['stud/add'] = 'Stud_controller/add_student';
$route['stud/add_view'] = 'Stud_controller/add_student_view';
$route['stud/edit/('d+)'] = 'Stud_controller/update_student_view/$1';
$route['stud/delete/('d+)'] = 'Stud_controller/delete_student/$1';
问题可能出在 config.php 文件中：
// This is wrong
$config['base_url'] = 'localhost/codeIgniter/';
// This is right
$config['base_url'] = 'http://localhost/codeIgniter/';
我有同样的问题，并且进行了此更正。