The project was made in 2020-05-05~2020-05-10html
谨以此片博文记录下个人第一个Java小Demo
代码请见GitHub前端
用户登陆页java
用户注册页mysql
用户主页git
用户购买健身卡(商城)页github
管理员登陆页web
管理员主页spring
管理员添加用户页sql
管理员编辑用户页数据库
细节1:常驻工具栏(内含搜索栏)
细节2:登陆帐号密码实时反馈(AJAX)
**细节3:翻页功能&可选每页显示条数 **
细节4:人性化的交互设计
JDK: 1.8
IDE: IDEA 201903
DataBase: MySQL 8.0
Mybatis: 3.5.2
POM: Maven
Tomcat 9
Bootstrap 3
JQuery 2
lombok 插件
分页插件: PageHelper 5.1.11
涉及技术 MySQL数据库,Spring,JavaWeb及MyBatis,简单的前端知识
大二没有好好学系统设计与分析,画的图一塌糊涂。
包含两个实体类,用户&管理员
生成该数据库的sql文件 在该GitHub跳转GitHub /sql 目录下
生成表如图示
应该叫作用例图吧,但个人好多符号都是错的,再次后悔没有好好学习!
设计该图的网址
其实这一步放在后面也合适,我为了让本身吃大饼,就先设计了一下。
项目文件结构如图所示
新建Maven项目,添加web支持
导入pom依赖
<dependencies> <!--Junit--> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <!--数据库驱动--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.47</version> </dependency> <!-- 数据库链接池 --> <dependency> <groupId>com.mchange</groupId> <artifactId>c3p0</artifactId> <version>0.9.5.2</version> </dependency> <!--Servlet - JSP --> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.2</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!--Mybatis--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.5.2</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>2.0.2</version> </dependency> <!--Spring--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.1.9.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>5.1.9.RELEASE</version> </dependency> </dependencies>
Maven资源过滤
<build> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> </resources> </build>
创建基本结构框架 (如上所示[点此跳转](# 环境配置)
创建基本配置
mybatis-config.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> </configuration>
applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> </beans>
Mybatis层编写
数据库配置文件 database.properties
jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8 jdbc.username=root jdbc.password=123456IDEA关联数据库
IDEA关联数据库
编写MyBatis的核心配置文件
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <typeAliases> <package name="com.kuang.pojo"/> </typeAliases> <mappers> <mapper resource="com/kuang/dao/BookMapper.xml"/> </mappers> </configuration>
User
@Data //使用lombok插件便可省写get set @AllArgsConstructor @NoArgsConstructor public class User { private int id; private String username; private String password; private String name; private String sex; private String telephone; private int age; private String begintime; private String endtime; private int remainday; private int addday; public static void main(String[] args) { User u = new User(); u.getTelephone(); } }
Admin
@Data @NoArgsConstructor @AllArgsConstructor public class Admin { private int id; private String username; private String password; private String name; private String telephone; }
编写DAO层的Mapper接口
public interface UserMapper { //经过id查询 User queryUserById(int id); // 查询到期时间 Date queryDateById(int id); //修改帐号密码 int updateNP(User user); //login User userLogin(User user); //会员注册 int userRegister(User user); }
2 adminMapper
@Mapper @Component public interface AdminMapper{ //查询会员 List<User> queryUser(); //新增会员 int addUser(User user); //删除会员 int deleteUserById(int id); //更新会员 int updateUser(User user); //根据id查询一个会员 User queryUserById(int id); //根据姓名查询一个会员 User queryUserByName(String name); //login Admin adminLogin(Admin admin); //查询用户总数 int selectTotal(); // 分页 @Select("select * from gymms.user") @Results({ // 用户信息,只要指定id列与属性的映射关系,其余列会自动封装(属性与列一致) @Result(property = "id", column = "id"), // 信息 @Result(property = "id", column = "id"), @Result(property = "username", column = "username"), @Result(property = "password", column = "password"), @Result(property = "name", column = "name"), @Result(property = "sex", column = "sex"), @Result(property = "telephone", column = "telephone"), @Result(property = "age", column = "age"), @Result(property = "begintime", column = "begintime"), @Result(property = "endtime", column = "endtime"), @Result(property = "remainday", column = "remainday") }) List<User> findAll(); }
编写接口对应的 Mapper.xml 文件
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.cc.dao.UserMapper"> <select id="queryDate" resultType="User"> select remainday from gymms.user where id = #{id} </select> <!-- 查询用户--> <select id="queryUserById" resultType="User"> select * from gymms.user where id = #{id} </select> <!--更新User--> <update id="updateUser" parameterType="User"> update gymms.user set username = #{username},password = #{password} where id = #{id} </update> <!--根据帐号密码查询,返回一个User--> <select id="userLogin" resultType="User"> select * from gymms.user where username = #{username} and password = #{password} </select> <!-- 会员注册--> <!--增长一个会员--> <insert id="userRegister" parameterType="User"> insert into gymms.user(username,password,name,sex,telephone,age,begintime,endtime,remainday) values (#{username},#{password},#{name},#{sex},#{telephone},#{age},#{begintime},#{endtime},#{remainday}) </insert> </mapper>
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.cc.dao.AdminMapper"> <!--增长一个会员--> <insert id="addUser" parameterType="User"> insert into gymms.user(username,password,name,sex,telephone,age,begintime,endtime,remainday) values (#{username},#{password},#{name},#{sex},#{telephone},#{age},#{begintime},#{endtime},#{remainday}) </insert> <!--根据id删除一个User--> <delete id="deleteUserById" parameterType="int"> delete from gymms.user where id=#{id} </delete> <!--更新User--> <update id="updateUser" parameterType="User"> update gymms.user set username = #{username},password = #{password},name = #{name},sex = #{sex},telephone = #{telephone}, age = #{age},endtime = #{endtime},remainday = #{remainday} where id = #{id} </update> <!--根据id查询,返回一个User--> <select id="queryUserById" resultType="User"> select * from gymms.user where id = #{id} </select> <!--根据姓名查询,返回一个User--> <select id="queryUserByName" resultType="User"> select * from gymms.user where name = #{name} </select> <!--查询所有Book--> <select id="queryUser" resultType="User"> SELECT * from gymms.user </select> <!--根据帐号密码查询,返回一个Admin--> <select id="adminLogin" resultType="Admin"> select * from gymms.admin where username = #{username} and password = #{password} </select> <select id="selectTotal" resultType="int"> select count(*) from gymms.user </select> </mapper>
编写Service层的接口和实现类
public interface UserService { // 查询到期时间 Date queryDateById(int id); //修改帐号密码 int updateNP(User user); //login User userLogin(User user); //经过id查询 User queryUserById(int id); //会员注册 int userRegister(User user); }
public interface AdminService { //查询会员 List<User> queryUser(); //新增会员 int addUser(User user); //删除会员 int deleteUserById(int id); //更新会员 int updateUser(User user); //根据id查询一个会员 User queryUserById(int id); //根据姓名查询一个会员 User queryUserByName(String name); //login Admin adminLogin(Admin admin); //查询用户总数 int selectTotal(); // 分页 List<User> findAll(); /** * 分页查询 * @param pageNum 固然页 * @param pageSize 页大小 * @return 返回PageHelper提供的封装分页参数的PageInfo对象 */ PageInfo<User> findByPage(int pageNum, int pageSize); }
public class UserServiceImpl implements UserService { private UserMapper userMapper; public void setUserMapper(UserMapper userMapper) { this.userMapper = userMapper; } public Date queryDateById(int id) { return userMapper.queryDateById(id); } public int updateNP(User user) { return userMapper.updateNP(user); } public User userLogin(User user) { return userMapper.userLogin(user); } public User queryUserById(int id) { return userMapper.queryUserById(id); } public int userRegister(User user) { return userMapper.userRegister(user); } }
public class AdminServiceImpl implements AdminService { private AdminMapper adminMapper; public void setAdminMapper(AdminMapper adminMapper) { this.adminMapper = adminMapper; } public List<User> queryUser() { return adminMapper.queryUser(); } public int addUser(User user) { return adminMapper.addUser(user); } public int deleteUserById(int id) { return adminMapper.deleteUserById(id); } public int updateUser(User user) { return adminMapper.updateUser(user); } public User queryUserById(int id) { return adminMapper.queryUserById(id); } public User queryUserByName(String name) { return adminMapper.queryUserByName(name); } public Admin adminLogin(Admin admin) { return adminMapper.adminLogin(admin); } public int selectTotal() { return adminMapper.selectTotal(); } public List<User> findAll() { return adminMapper.findAll(); } public PageInfo<User> findByPage(int pageNum, int pageSize) { PageHelper.startPage(pageNum, pageSize); List<User> list = adminMapper.findAll(); PageInfo<User> pageInfo = new PageInfo<>(list); return pageInfo; } }
配置Spring整合MyBatis,咱们这里数据源使用c3p0链接池;
编写Spring整合Mybatis的相关的配置文件;
spring-dao.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd"> <!-- 配置整合mybatis --> <!-- 1.关联数据库文件 --> <context:property-placeholder location="classpath:database.properties"/> <!-- 2.数据库链接池 --> <!--数据库链接池 dbcp 半自动化操做 不能自动链接 c3p0 自动化操做(自动的加载配置文件 而且设置到对象里面) --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <!-- 配置链接池属性 --> <property name="driverClass" value="${jdbc.driver}"/> <property name="jdbcUrl" value="${jdbc.url}"/> <property name="user" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> <!-- c3p0链接池的私有属性 --> <property name="maxPoolSize" value="30"/> <property name="minPoolSize" value="10"/> <!-- 关闭链接后不自动commit --> <property name="autoCommitOnClose" value="false"/> <!-- 获取链接超时时间 --> <property name="checkoutTimeout" value="10000"/> <!-- 当获取链接失败重试次数 --> <property name="acquireRetryAttempts" value="2"/> </bean> <!-- 3.配置SqlSessionFactory对象 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 注入数据库链接池 --> <property name="dataSource" ref="dataSource"/> <!-- 配置MyBaties全局配置文件:mybatis-config.xml --> <property name="configLocation" value="classpath:mybatis-config.xml"/> </bean> <!-- 4.配置扫描Dao接口包,动态实现Dao接口注入到spring容器中 --> <!--解释 :https://www.cnblogs.com/jpfss/p/7799806.html--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 注入sqlSessionFactory --> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> <!-- 给出须要扫描Dao接口包 --> <property name="basePackage" value="com.cc.dao"/> </bean> </beans>
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 扫描service相关的bean --> <context:component-scan base-package="com.cc.service" /> <!--AdminServiceImpl注入到IOC容器中--> <bean id="AdminServiceImpl" class="com.cc.service.AdminServiceImpl"> <property name="adminMapper" ref="adminMapper"/> </bean> <!--UserServiceImpl注入到IOC容器中--> <bean id="UserServiceImpl" class="com.cc.service.UserServiceImpl"> <property name="userMapper" ref="userMapper"/> </bean> <!-- 配置事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 注入数据库链接池 --> <property name="dataSource" ref="dataSource" /> </bean> </beans>
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" version="4.0"> <!--DispatcherServlet--> <servlet> <servlet-name>DispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <!--必定要注意:咱们这里加载的是总的配置文件,以前被这里坑了!--> <param-value>classpath:applicationContext.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>DispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!--encodingFilter--> <filter> <filter-name>encodingFilter</filter-name> <filter-class> org.springframework.web.filter.CharacterEncodingFilter </filter-class> <init-param> <param-name>encoding</param-name> <param-value>utf-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!--Session过时时间--> <session-config> <session-timeout>15</session-timeout> </session-config> </web-app>
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd"> <!-- 配置SpringMVC --> <!-- 1.开启SpringMVC注解驱动 --> <mvc:annotation-driven> </mvc:annotation-driven> <!-- 2.静态资源默认servlet配置--> <mvc:default-servlet-handler/> <!-- 3.配置jsp 显示ViewResolver视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value=".jsp" /> </bean> <!-- 日期转换 --> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"> <property name="webBindingInitializer"> <bean class="com.cc.utils.convertDate"/> </property> </bean> <!-- 4.扫描web相关的bean --> <context:component-scan base-package="com.cc.controller" /> </beans>
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <!--3. 建立SqlSessionFactoryBean,注入链接池--> <bean class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"></property> </bean> <import resource="classpath:spring/spring-dao.xml"/> <import resource="classpath:spring/spring-service.xml"/> <import resource="classpath:spring/spring-mvc.xml"/> </beans>
package com.cc.controller; import com.cc.pojo.User; import com.cc.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.servlet.ModelAndView; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; @Controller @RequestMapping("/user") public class UserController { @Autowired @Qualifier("UserServiceImpl") private UserService userService; @RequestMapping("/toLogin") public String toLoginUser(Model model, HttpServletRequest request ) { try { String username = request.getParameter("username"); String password = request.getParameter("password"); System.out.println(username+" "+password); User user =new User(); user.setUsername(username); user.setPassword(password); User users = userService.userLogin(user); if (users.getId() > 0) { // model.addAttribute("user", users); model.addAttribute("user", users); return "userMain"; } } catch (Exception e) { model.addAttribute("error","Wrong username or password!"); return "redirect:/"; } return "redirect:/"; } @ResponseBody @RequestMapping("/toLogintest") public String userLogin(String name,String pwd) { String msg = "Wrong username or password!"; //模拟数据库中存在数据 if ((name != null) && (pwd != null)) { // 从数据库检索是否存在该用户 User user = new User(); user.setUsername(name); user.setPassword(pwd); try { User users = userService.userLogin(user); if (users.getUsername().equals(name) && users.getPassword().equals(pwd)) { msg = "Login Success"; } return msg; }catch (Exception e){} return msg; //g } return msg; } @RequestMapping("/userBuy") public String userBuyCard(Model model,int id) throws ParseException { User user = userService.queryUserById(id); System.out.println(user); model.addAttribute("user",user ); return "userMall"; } @RequestMapping("/userMianPage") public String userMianPage(Model model,int id) throws ParseException { User user = userService.queryUserById(id); System.out.println(user); model.addAttribute("user",user ); return "userMain"; } // 跳转注册页面 @RequestMapping("/toUserRegister") public String toAddPaper() { return "register"; } //注册 @RequestMapping("/userRegister") public String registerUser(User user) throws ParseException { SimpleDateFormat sp = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss"); String date = sp.format(new Date()); user.setBegintime(date); user.setEndtime(date); user.setRemainday(0); userService.userRegister(user); return "redirect:/user/toLogin"; } }
package com.cc.controller; import com.cc.pojo.Admin; import com.cc.pojo.User; import com.cc.service.AdminService; import com.github.pagehelper.PageInfo; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.servlet.ModelAndView; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.List; @Controller @RequestMapping("/admin") public class AdminController { @Autowired @Qualifier("AdminServiceImpl") private AdminService adminService; @RequestMapping("/toAddUser") public String toAddPaper() { return "register"; } @RequestMapping("/addUser") public String addPaper(User user) throws ParseException { System.out.println(user); SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd"); // 日期格式 Date date = dateFormat.parse(user.getBegintime()); // 指定日期 Calendar cl = Calendar.getInstance(); cl.setTime(date); cl.add(Calendar.DATE, user.getRemainday()); String temp = ""; temp = dateFormat.format(cl.getTime()); user.setEndtime(temp); adminService.addUser(user); return "redirect:/admin/findByPage"; } @RequestMapping("/toUpdateUser") public String toUpdateUser(Model model, int id) { User user = adminService.queryUserById(id); System.out.println(user); model.addAttribute("user",user ); return "updateUser"; } @RequestMapping("/updateUser") public String updateUser(Model model, User user) throws ParseException { SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); // 日期格式 Date date = dateFormat.parse(user.getBegintime()); // 指定日期 Calendar cl = Calendar.getInstance(); cl.setTime(date); int allday = user.getRemainday()+user.getAddday(); cl.add(Calendar.DATE, allday); String temp = ""; temp = dateFormat.format(cl.getTime()); user.setEndtime(temp); user.setRemainday(allday); adminService.updateUser(user); User users = adminService.queryUserById(user.getId()); model.addAttribute("user", users); return "redirect:/admin/findByPage"; } @RequestMapping("/del/{userId}") public String deleteBook(@PathVariable("userId") int id) { adminService.deleteUserById(id); return "redirect:/admin/findByPage"; } @RequestMapping("/toaLogin") public String toaLogin() { return "/aLogin"; } @RequestMapping("/aLogin") public String toLoginUser(Admin admin) { System.out.println(admin.getUsername()+admin.getPassword()); try { Admin admins = adminService.adminLogin(admin); if (admins.getId() > 0) { // model.addAttribute("user", users); return "redirect:/admin/findByPage"; } }catch (Exception e){ return "/aLogin"; } return "/aLogin"; } @RequestMapping("/findAll") public ModelAndView findAll() { //1.1 调用service List<User> list = adminService.findAll(); //1.2 返回结果 ModelAndView mv = new ModelAndView(); mv.setViewName("order-list"); mv.addObject("list", list); return mv; } @RequestMapping("/findByPage") public String findByPage(Model model, @RequestParam(defaultValue = "1") int pageNum, @RequestParam(defaultValue = "11") int pageSize) { PageInfo<User> pageInfo = adminService.findByPage(pageNum, pageSize); // PageInfo pageInfo = adminService.findByPage(pageNum, pageSize); //1.1 调用service //1.2 返回结果 model.addAttribute("list", pageInfo.getList()); model.addAttribute("pageInfo", pageInfo); return "allUserPage"; } @RequestMapping("/searchUser") public String searchUser(Model model, String name) { try { User user = adminService.queryUserByName(name); System.out.println(user); model.addAttribute("user", user); if (user.getName() == null) { return "redirect:/admin/findByPage"; } return "updateUser"; }catch (Exception e){ return "redirect:/admin/findByPage"; } } // 商城 @RequestMapping("/buy") public String buyCard() throws ParseException { return "mall"; } }
详情见GitHub
如下功能在之后可拓展开发
这个小Demo作了五六天,分页那里卡了接近两天,无数的坑等着踩。
期间也体会到了编程的乐趣,天天晚上都肝的快快乐乐。
全部代码放在GitHub供你们交流学习。
今天母亲节呀,祝我妈妈母亲节快乐! 晚安!