继续上一篇剩下的例子
创建数据表user_info
create table 'user_info'（
user_id int(11) NOT NULL AUTO_INCREMENT,
user_name varchar(20) NOT NULL,
user_sex varchar(20) NOT NULL,
PRIMARY KEY (`user_id`)
）
写一个实体类UserInfo.java
package hover.chen.entity;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name="user_info")
public class UserInfo {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
@Column(name="user_id")
private int userId;
@Column(name="user_name")
private String userName;
@Column(name="user_sex")
private String userSex;
public int getUserId() {
return userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserSex() {
return userSex;
}
public void setUserSex(String userSex) {
this.userSex = userSex;
}
}
写一个 IUserDAO.java 接口
package hover.chen.dao;
import hover.chen.entity.UserInfo;
public interface IUserDAO {
public int addUser(UserInfo user);
}
UserDAOImpl 实现 IUserDAO.java
package hover.chen.dao;
import hover.chen.entity.UserInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.hibernate3.HibernateTemplate;
import org.springframework.stereotype.Repository;
//通过注解告诉spring这是DAO层
@Repository
public class UserDAOImpl implements IUserDAO{
//告诉spring容器自动将hibernateTemplate注入到DAO层
@Autowired
private HibernateTemplate hibernateTemplate;
public int addUser(UserInfo user){
String result = this.hibernateTemplate.save(user).toString();
if(result != null){
return Integer.parseInt(result);
}
return 0;
}
}
写一个 IUserService 接口
package hover.chen.service;
import hover.chen.entity.UserInfo;
public interface IUserService {
public boolean addUser(UserInfo user);
}
UserServiceImpl 实现 IUserService
package hover.chen.service;
import hover.chen.dao.IUserDAO;
import hover.chen.entity.UserInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
//告诉spring这是service层
@Service
public class UserServiceImpl implements IUserService{
//告诉spring容器自动将userDAO注入到Service层
@Autowired
private IUserDAO userDAO;
public boolean addUser(UserInfo user){
return this.userDAO.addUser(user) > 0 ? true : false;
}
}
写一个Controller
package hover.chen.controller;
import hover.chen.entity.UserInfo;
import hover.chen.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
//告诉spring这是controller
@Controller
//此类处理的是以/user路径的url请求
@RequestMapping
public class UserController {
@Autowired
private IUserService userService;
//处代表的是整个方法处理addUser的post请求
@RequestMapping(value="/addUser",method=RequestMethod.POST)
//处代表的是请求参数，其中value必须与页面元素的name值匹配，required=true则代表该参数必须要有
//return 是指跳转至相应的路径，在这里是指跳转至views/success.jsp或者views/fail.jsp
public String addUserAction(@RequestParam(value="userName",required=true)String userName,
@RequestParam(value="userSex",required=true)String userSex){
UserInfo user = new UserInfo();
user.setUserName(userName);
user.setUserSex(userSex);
return this.userService.addUser(user) == true ? "success" : "fail";
}
}
接下来是使视图层
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>index</title> </head> <body> <form action="addUser" method="post"> <table align="center"> <tr> <td>用户名：</td> <td><input type="text" name="userName" /></td> </tr> <tr> <td>性别：</td> <td> <input type="radio" name="userSex" checked="checked" value="男" /> 男 <input type="radio" name="userSex" value="女" /> 女 </td> </tr> <tr> <td colspan="2"> <input type="submit" value="注册"> </td> </tr> </table> </form> </body> </html>
在 WEB-INF 下新建 views 文件夹，还记得上一篇在 mvc-context.xml 下配置
<!-- 代表返回视图进行解析：前缀为prefix 后缀为suffix --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="WEB-INF/views/" /> <property name="suffix" value=".jsp" /> </bean>
这里指定了视图的访问地址前缀。
在 views 下创建 success.jsp 和 fail.jsp
到这里所有都做完了，现在执行 clean install jetty:run
右键项目 run》》configure 双击 Maven Build 新建 configure
点击Apply ，点击run
OK，就到这里。。。
如果遇到什么问题可以在评论里提出谢谢，我看到了如果会的话，会尽力回答！