开发环境
- 64位的Windows系统
- Server version: 5.5.58
- MySQL Community Server (GPL)
- java version “1.8.0_211”
- SQLyog
- IDEA
- Apache Maven 3.6.0
具体实现
.java文件
package com.ldb.dao;
import com.ldb.bean.User;
import java.util.List;
public interface UserDao {
List<User> findAllUser();
int save(User user);
int delete(User user);
int update(User user);
}
package com.ldb.service;
import com.ldb.bean.User;
import java.util.List;
public interface UserService {
List<User> findAllUser();
int save(User user);
int delete(User user);
int update(User user);
}
package com.ldb.service.impl;
import com.ldb.bean.User;
import com.ldb.dao.UserDao;
import com.ldb.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserDao userDao;
@Override
public List<User> findAllUser() {
return userDao.findAllUser();
}
@Override
public int save(User user) {
return userDao.save(user);
}
public int delete(User user){
return userDao.delete(user);
}
public int update(User user){
return userDao.update(user);
}
}
package com.ldb.controller;
import com.ldb.bean.User;
import com.ldb.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import or