SSM(Spring+Springmvc+Mybatis)增删改查的创建及整合步骤
1、创建web工程
2、导入相关jar包
在WebContext/WEB-INF/lib中导入jar包
3、创建User类
创建Getter和setter方法
public class User {
private Integer userId;
private String userName;
private String userPwd;
private Integer userAge;
private String userHobby;
public Integer getUserId() {
return userId;
}
public void setUserId(Integer userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserPwd() {
return userPwd;
}
public void setUserPwd(String userPwd) {
this.userPwd = userPwd;
}
public Integer getUserAge() {
return userAge;
}
public void setUserAge(Integer userAge) {
this.userAge = userAge;
}
public String getUserHobby() {
return userHobby;
}
public void setUserHobby(String userHobby) {
this.userHobby = userHobby;
}
}4、编写Mapper接口
public interface UserMapper {
/**
* 注册用户
* @param user
* @return
*/
public int reg(User user);
/**
* 删除用户
* @param user
* @return
*/
public int delUser(User user);
/**
* 修改用户
* @param user
* @return
*/
public int updateUser(User user);
/**
* 获取所有用户
* @return
*/
public List getAllUser();
/**
* 根据id查询用户
* @param user
* @return
*/
public User getUserById(User user);
/**
* 登录
* @param user
* @return
*/
public User login(User user);
}
5、编写Mapper.xml文件
sql语句
sql语句
sql语句
6、编写控制层Service层
public interface UserService {
/**
* 增加用户
* @param user
* @return
*/
public int reg(User user);
/**
* 删除用户
* @param user
* @return
*/
public int delUser(User user);
/**
* 修改用户
* @param user
* @return
*/
public int updateUser(User user);
/**
* 获取所有用户
* @return
*/
public List getAllUser();
/**
* 根据id查询用户
* @param user
* @return
*/
public User getUserById(User user);
/**
* 登录
* @param user
* @return
*/
public User login(User user);
}
7、编写Service的实现类ServiceImp，继承Service接口
@Autowired注解代表注入。
public class UserServiceImp implements UserService {
//在实现类ServiceImp中注入Mapper接口
@Autowired
private UserMapper userMapper;
public int reg(User user) {
System.out.println("reg");
return userMapper.reg(user);
}
public int delUser(User user) {
System.out.println("delUser");
return userMapper.delUser(user);
}
public int updateUser(User user) {
System.out.println("updateUser");
return userMapper.updateUser(user);
}
public List getAllUser() {
System.out.println("getAllUser");
return userMapper.getAllUser();
}
public User getUserById(User user) {
System.out.println("getUserById");
return userMapper.getUserById(user);
}
public User login(User user) {
System.out.println("login");
return userMapper.login(user);
}
}
8、编写控制层Controller
1、@Controller注解用于指示该类是一个控制器
2、@RequestMapping是一个用来处理请求地址映射的注解，可用于类或方法上。用于类上，表示类中的所有响应请求的方法都是以该地址作为父路径。
@Controller
@RequestMapping("user")
public class UserController {
//注入UserService
@Autowired
private UserService userServiceImp;
/**
* 增加用户
* @param user
* @return
*/
@RequestMapping("reg")
public ModelAndView reg(User user) {
//调用增加方法
int i = userServiceImp.reg(user);
//创建ModelAndView对象
ModelAndView mav = new ModelAndView();
if(i==0) {
//设置跳转页面名称，交由图形解析器
mav.setViewName("reg");
return mav;
}
//跳转登录页面
mav.setViewName("forward:/Login.jsp");
return mav;
}
/**
* 用户删除
* @param user
* @return
*/
@RequestMapping("delUser")
public ModelAndView delUser(User user) {
//调用删除方法
userServiceImp.delUser(user);
//创建ModelAndView对象
ModelAndView mav = new ModelAndView();
//跳转至查询所有用户方法
mav.setViewName("forward:/user/getAllUser.action");
return mav;
}
/**
* 用户更新
* @param user
* @return
*/
@RequestMapping("updateUser")
public ModelAndView updateUser(User user) {
//调用修改方法
userServiceImp.updateUser(user);
//创建ModelAndView对象
ModelAndView mav = new ModelAndView();
//跳转至查询所有用户方法
mav.setViewName("forward:/user/getAllUser.action");
return mav;
}
/**
* 获取所有用户
* @param user
* @return
*/
@RequestMapping("getAllUser")
public ModelAndView getAllUser() {
//创建ModelAndView对象
ModelAndView mav = new ModelAndView();
//调用查询所有用户方法，用List接住
List allUser = userServiceImp.getAllUser();
放入ModelAndView中，标识为list
mav.addObject("list", allUser);
mav.setViewName("showAll");
return mav;
}
/**
* 根据id查询用户
* @param user
* @return
*/
@RequestMapping("getUserById")
public ModelAndView getUserById(User user) {
//调用查询所有用户方法
User userss = userServiceImp.getUserById(user);
//创建ModelAndView对象
ModelAndView mav = new ModelAndView();
放入ModelAndView中，标识为list
mav.addObject("user", userss);
//设置跳转页面名称，交由图形解析器
mav.setViewName("updatePage");
return mav;
}
/**
* 登录
* @param user
* @return
*/
@RequestMapping("login")
public ModelAndView login(User user) {
ModelAndView mav = new ModelAndView();
User users = userServiceImp.login(user);
if(users==null) {
mav.addObject("ma","账户或密码错误" );
mav.setViewName("Login");
}
mav.addObject("user", users);
mav.setViewName("forward:/user/getAllUser.action");
return mav;
}
} 9、编写springmvc.xml
10、编写mybatis-config.xml文件
11、编写applicationContext.xml文件
1、applicationContext-service.xml
2、applicationContext-dao.xml
12、配置web.xml文件
ssm01
index.html
index.htm
index.jsp
default.html
default.htm
default.jsp
ssm1
org.springframework.web.servlet.DispatcherServlet
contextConfigLocation
classpath:spring/springmvc.xml
1
ssm1
//访问方法时需加上后缀
*.action
org.springframework.web.context.ContextLoaderListener
contextConfigLocation
classpath*:spring/applicationContext-*.xml
13、增加用户jsp页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
Insert title here
14、获取所有用户jsp页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
Insert title here
userId
userName
userAge
userHobby
${user.userId}
${user.userName}
${user.userAge}
${user.userHobby}
删除修改
15、修改用户jsp页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
Insert title here