package com.zgr.controller;
import com.zgr.domain.User;
import com.zgr.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
@Controller
public class UserController {
@Autowired
private IUserService userService;
@RequestMapping(value="/showname",method= RequestMethod.GET)
public String getUserById (@RequestParam("uid") int id,
Model model) {
if (id > 0) {
User user = userService.getUserById(id);
model.addAttribute("name", user.getName());
return "user/info";
}
return "user/error";
}
}
IUserDao.java
package com.zgr.dao;
import com.zgr.domain.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import java.util.List;
@Mapper
public interface IUserDao {
List getUsers();
User getUserById(@Param("id") Integer id);
/*List getUserByPage(Integer pageCurr, Integer pageSize);*/
Integer insert (@Param("user") User user);
Integer update (@Param("user") User user);
Integer delete (@Param("id") Integer id);
}
User.java
package com.zgr.domain;
public class User {
private Integer id;
private String name;
private Integer age;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", name="" + name + """ +
", age=" + age +
"}";
}
}
IUserService.java
package com.zgr.service;
import com.zgr.domain.User;
import java.util.List;
public interface IUserService {
List getUsers();
User getUserById(Integer id);
Integer insert (User user);
Integer update (User user);
Integer delete (Integer id);
}
UserService.java
package com.zgr.service.impl;
import com.zgr.dao.IUserDao;
import com.zgr.domain.User;
import com.zgr.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UserService implements IUserService {
@Autowired
private IUserDao userDao;
public List getUsers () {
List users = userDao.getUsers();
if (users != null)
return users;
return null;
}
}
UserMapper.xml
INSERT INTO (name, age)
VALUE (#{user.name}, #{user.age})
UPDATE
name = #{user.name},
age = #{user.age}
WHERE id = #{user.id}
DELETE FROM
WHERE id = #{id}
user
id, name, age
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關于springMVC的配置，可以參考這篇文章的第一個小節：【java】intellij idea SpringMVC 配置FreeMarker模板引...
