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SpringMVC数据库操作（向数据库写入）
将HelloWorld里的addUser2方法和resultpost方法剪贴到UserController
在resultpost方法里增加数据库写入代码
package SpringmvcDemo.Controllers;
import SpringmvcDemo.DB.DbConnector;
import SpringmvcDemo.DB.entity.UsersEntity;
import SpringmvcDemo.User;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.criterion.Order;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;
@Controller
public class UserController {@RequestMapping(value = "https://www.it610.com/users",method = RequestMethod.GET)
public String allUsers(ModelMap modelMap){
Session session = DbConnector.getSession();
//创建数据库连接List list =session.createCriteria(UsersEntity.class).addOrder(Order.desc("id")).list();
modelMap.addAttribute("users",list);
session.close();
//关闭数据库连接return "users";
}@RequestMapping(value = "https://www.it610.com/resultpost",method=RequestMethod.POST)
//参数里增加HttpServletRequest request
public String resultpost(ModelMap modelMap, @RequestParam String name, @RequestParam int age, HttpServletRequest request){
modelMap.addAttribute("name",name);
modelMap.addAttribute("age",age);
//连接数据库
Session session = DbConnector.getSession();
//开始事务
Transaction transaction = session.beginTransaction();
//创建一个实体对象，设置name，age
UsersEntity usersEntity = new UsersEntity();
usersEntity.setName(name);
usersEntity.setAge((byte) age);
//保存
session.save(usersEntity);
//提交
transaction.commit();
//关闭数据库连接
session.close();
return "resultpost";
}@RequestMapping(value="https://www.it610.com/addUser2",method = RequestMethod.GET)
public String addUser2(ModelMap modelMap){
User u = new User();
u.setName("hi");
modelMap.addAttribute("user",u);
return "adduser_springmvc";
}}
修改resultpost.jsp文件，增加重定向
通过post传递参数 - 锐客网
名字：${name}
年龄：${age}
【SpringMVC数据库操作（向数据库写入）】修改user.jsp，增加超链接功能，href里的“addUser2”对应的是UserController里的addUser2方法
用户列表 - 锐客网
- 姓名： 年龄：
添加用户
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