Symfony2使用第三方库Upload制作图片上传实例详解

"codeguy/upload": "*"

composer update

<?php/** * @author Sun * By blogs.zmit.cn http://blogs.zmit.cn * 原创作品，允许转载，转载时请务必以超链接形式标明文章原始出处 http://blogs.zmit.cn/6544.html * 中梦博客，作者信息和本声明。否则将追究法律责任。 */namespace ZM/AdminBundle/Controller;use Symfony/Bundle/FrameworkBundle/Controller/Controller;use Symfony/Component/Filesystem/Filesystem;class DefaultController extends Controller {  public function indexAction($name) {    return $this->render('ZMAdminBundle:Default:index.html.twig', array('name' => $name));  }  /**   * 上传图片   *   * @param type $user_id 用户的id，用作文件名   * @param type $str   表单中file类型的input的name   * @param type $path  保存路径   * @return type   */  public function uploadPic($user_id, $str, $path) {    $fs = new Filesystem();    //检查路径是否存在    if (!$fs->exists($path)) {      //如果不存在，创建目录      $fs->mkdir($path, 0700);    }    //使用Upload库    $storage = new /Upload/Storage/FileSystem($path);    $file = new /Upload/File($str, $storage);    //如果文件名为空    if ($file->getName() != '') {      //设置文件名为用户的id      $file->setName($user_id);      //验证文件上传      $file->addValidations(array(        //指定文件类型        new /Upload/Validation/Mimetype(array('image/png', 'image/jpg', 'image/jpeg', 'image/gif')),        //指定文件大小        new /Upload/Validation/Size('2M')      ));      //上传文件      try {        //成功        $file->upload();        //文件名和扩展名        $file_name = $file->getNameWithExtension();      } catch (/Exception $e) {        //失败!        $errors = $file->getErrors();      }    }    //返回文件名和扩展名    return $file_name;  }}

<?php/** * 联系人控制器 * @author Sun * By blogs.zmit.cn http://blogs.zmit.cn * 原创作品，允许转载，转载时请务必以超链接形式标明文章原始出处 http://blogs.zmit.cn/6544.html * 中梦博客，作者信息和本声明。否则将追究法律责任。 */namespace ZM/ApiBundle/Controller;//引用写好的上传图片方法uploadPic的Controller，并命名为BaseControlleruse ZM/AdminBundle/Controller/DefaultController AS BaseController;use Symfony/Component/HttpFoundation/Request;use Symfony/Component/HttpFoundation/Response;//继承BaseControllerclass ContactController extends BaseController {  /**   * 用户上传头像   *   * @return Response   */  public function uploadHeadAction() {    $request = Request::createFromGlobals()->request;    $user_id = $request->get('user_id');    //判断是否有文件上传    if (isset($_FILES['head']) && $_FILES['head'] != '') {      $conn = $this->getDoctrine()->getConnection();      $data = $conn->fetchAssoc("SELECT id, head FROM contact WHERE id = ? LIMIT 1", array($user_id));      //判断用户是否存在      if(!empty($data['id'])) {        //设置图片保存路径        $path = 'image/head/';        //获取上传文件后返回的文件名和扩展名        $file_name = $this->uploadPic($user_id, 'head', $path);        //修改用户contact表head头像字段的值        $conn->executeUpdate("UPDATE contact SET head = ? WHERE id = ?", array($path . $file_name, $user_id));        $result['flag'] = 1;        $result['content'] = '上传头像成功！';      } else {        $result['flag'] = 3;        $result['content'] = '用户不存在！';      }    }else{      $result['flag'] = 2;      $result['content'] = '上传失败，没有选择图片！';    }    return new Response(json_encode($result), '200', array('Content-Type' => 'application/json'));  }}