/**
* 添加一个教师信息
*
* @return
*/
public String addT() throws Exception {
if (pictureUpload() != null) {
teacher.setPictureUrl(pictureUpload());
}
personService.saveTeacher(teacher);
request.setAttribute("SUCCESS", "添加教师成功");
return "addSuccess";
}
/**
* 对教师信息的修改，可以是教师本身或者管理员
*
* @return
*/
public String updateT() {
init();
String teacherId = request.getParameter("teacherId"); // 从请求参数过来的是老师更改
if (teacherId == null) {
teacherId = request.getSession().getAttribute("USER_ID").toString(); // 从session获得的是老师更改的
}
Teacher teacher = personService.getTeacher(teacherId);
String imageUrl = teacher.getPictureUrl(); // 服务器绝对地址
if (imageUrl != null) {
oldPicturePath = imageUrl; // 保存一个地址，用于和更新后的比较是否有变化，有变化就删除原来的图片
imageUrl = imageUrl.substring(imageUrl.lastIndexOf("\\") + 1);
String relativeUrl = "File/images/" + imageUrl; // 浏览器相对地址
teacher.setPictureUrl(relativeUrl);
}
request.setAttribute("teacher", teacher);
return "updateTSuccess";
}
/**
* 处理教师信息的修改
*
* @return
* @throws IOException
* @throws Exception
*/
public String updateTDeal() throws Exception {
init();
if (pictureUpload() != null) {
teacher.setPictureUrl(pictureUpload());
if (oldPicturePath != null) { // 设置了新的图片就删除原来的图片
File file = new File(oldPicturePath);
if (file.exists()) {
file.delete();
}
}
}
personService.updateTeacher(teacher);
response.getWriter().write("<script type='text/javascript'> alert('修改教师信息成功')</script>");
response.flushBuffer();
response.getWriter().close();
return NONE;
}