最后一條刪不了可以這樣
if(list!=null && list.size()>0){
session.setAttribute("students_list", list);
}
else{
session.setAttribute("students_list",null);
}
if(list!=null && list.size()>0){
session.setAttribute("students_list", list);
}
else{
session.setAttribute("students_list",null);
}
2016-04-19
public String add() throws ParseException{
//獲取前臺(tái)表單提交的學(xué)生姓名
String sname=this.request.getParameter("sname");
//獲取表單提交的學(xué)生性別.
String gender=this.request.getParameter("gender");
//獲取表單提交的出生日期,字符串形式.
String birthday=this.request.getParameter("birthday");
//獲取前臺(tái)表單提交的學(xué)生姓名
String sname=this.request.getParameter("sname");
//獲取表單提交的學(xué)生性別.
String gender=this.request.getParameter("gender");
//獲取表單提交的出生日期,字符串形式.
String birthday=this.request.getParameter("birthday");
2016-04-17
//獲取表單提交的地址
String address=this.request.getParameter("address");
//創(chuàng)建一個(gè)Student對(duì)象,為其初始化.
Student stu=new Student();
//初始化姓名
stu.setSname(sname);
//初始化性別
stu.setGender(gender);
//將前臺(tái)表單提交的出生日期(字符串形式)類(lèi)型,轉(zhuǎn)換為Date類(lèi)型,因此Student中保存的是Date類(lèi)型.
String address=this.request.getParameter("address");
//創(chuàng)建一個(gè)Student對(duì)象,為其初始化.
Student stu=new Student();
//初始化姓名
stu.setSname(sname);
//初始化性別
stu.setGender(gender);
//將前臺(tái)表單提交的出生日期(字符串形式)類(lèi)型,轉(zhuǎn)換為Date類(lèi)型,因此Student中保存的是Date類(lèi)型.
2016-04-17
SimpleDateFormat simpleDateFormat=new SimpleDateFormat("yyyy-MM-dd");
Date date=simpleDateFormat.parse(birthday);
//初始化出生日期
stu.setBirthday(date);
//初始化地址信息
stu.setAddress(address);
//調(diào)用添加學(xué)生的方法,把學(xué)生對(duì)象傳進(jìn)去,學(xué)號(hào)即主鍵會(huì)在Dao的方法中獲取并設(shè)置.
service.addStudent(stu);
return "add_success";
}
Date date=simpleDateFormat.parse(birthday);
//初始化出生日期
stu.setBirthday(date);
//初始化地址信息
stu.setAddress(address);
//調(diào)用添加學(xué)生的方法,把學(xué)生對(duì)象傳進(jìn)去,學(xué)號(hào)即主鍵會(huì)在Dao的方法中獲取并設(shè)置.
service.addStudent(stu);
return "add_success";
}
2016-04-17
StandardServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().configure().build();
Metadata metadata = new MetadataSources( serviceRegistry ).buildMetadata();
SchemaExport schemaExport = new SchemaExport();
schemaExport.create(EnumSet.of(TargetType.DATABASE), metadata);
Metadata metadata = new MetadataSources( serviceRegistry ).buildMetadata();
SchemaExport schemaExport = new SchemaExport();
schemaExport.create(EnumSet.of(TargetType.DATABASE), metadata);
2016-04-17
謝謝老師,收貨很大,老師的代碼很規(guī)范。。。
org.hibernate.exception.JDBCConnectionException: Error calling Driver#connect
2016-04-14
org.hibernate.MappingNotFoundException: resource: entity/Students.hbm.xml not found
2016-04-14