Spring MVC——Spring MVC（4）

1.ssm整合

1.1.创建表

CREATE TABLE `account` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(20) DEFAULT NULL,
  `money` double DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

1.2.创建工程

1.3.pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.wt</groupId>
    <artifactId>ssm</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <properties>
        <spring.version>5.1.8.RELEASE</spring.version>
        <slf4j.version>1.6.6</slf4j.version>
        <log4j.version>1.2.12</log4j.version>
        <mysql.version>5.1.47</mysql.version>
        <mybatis.version>3.4.5</mybatis.version>
        <druid.version>1.1.0</druid.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--mybatis-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.0</version>
        </dependency>
        <!--mysql-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>
        <!--连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.0</version>
        </dependency>
		<!--jsp-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.0</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <!-- log start -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${slf4j.version}</version>
        </dependency>        
    </dependencies>
    <build>
        <plugins>
            <!-- 配置Tomcat插件 -->
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <!--端口号-->
                    <port>8080</port>
                    <!--项目名-->
                    <path>/</path>
                    <!--按UTF-8进行编码-->
                    <uriEncoding>UTF-8</uriEncoding>
                </configuration>
            </plugin>
            <!-- java编译插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.2</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
    </build>
</project>

1.4.log4j.properties

log4j.rootLogger=DEBUG,A1

log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} - %c%l%m%n

1.5.db.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm?characterEncoding=utf-8
jdbc.username=root
jdbc.password=1111

1.6.applicationContext-dao.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
       http://www.springframework.org/schema/aop
       https://www.springframework.org/schema/aop/spring-aop.xsd">
    <!-- 加载配置文件 -->
    <context:property-placeholder location="classpath:db.properties" />
    <!-- 数据库连接池 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
        <property name="driverClassName" value="${jdbc.driver}" />
        <property name="maxActive" value="10" />
        <property name="minIdle" value="5" />
    </bean>
    <!-- 让spring管理sqlsessionfactory 使用mybatis和spring整合包中的 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 数据库连接池 -->
        <property name="dataSource" ref="dataSource" />
        <!-- 别名-->
        <property name="typeAliasesPackage" value="com.wt.pojo"></property>
    </bean>
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.wt.mapper"></property>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>
</beans>

1.7.applicationContext-tx.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
       http://www.springframework.org/schema/aop
       https://www.springframework.org/schema/aop/spring-aop.xsd">
    <!-- 事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 数据源 -->
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!-- 通知 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <!-- 传播行为 -->
            <tx:method name="insert*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="select*" propagation="SUPPORTS" read-only="true"/>
            <tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
        </tx:attributes>
    </tx:advice>
    <!-- 切面 -->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.wt.service.*.*(..))" />
    </aop:config>
</beans>

1.8.applicationContext-service.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
       http://www.springframework.org/schema/aop
       https://www.springframework.org/schema/aop/spring-aop.xsd">
    <!-- 扫描service的包 -->
    <context:component-scan base-package="com.wt.service"></context:component-scan>
</beans>

1.9.springmvc.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:p="http://www.springframework.org/schema/p"
       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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
    <!-- 配置创建 spring 容器要扫描的包 -->
    <context:component-scan base-package="com.wt.controller"></context:component-scan>

    <!-- 配置视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

	<!--开启springmvc注解支持：配置HandlerMapping和HandlerAdapter-->
    <mvc:annotation-driven  conversion-service="cs"></mvc:annotation-driven>

    <!-- 配置类型转换器工厂 -->
    <bean id="cs" class="org.springframework.context.support.ConversionServiceFactoryBean">
        <!-- 给工厂注入一个新的类型转换器 -->
        <property name="converters">
            <set>
                <!-- 配置自定义类型转换器 -->
                <bean class="com.wantong.converter.DateConverter"></bean>
            </set>
        </property>
    </bean>

    <!--配置文件上传解析器-->
    <bean id="multipartResolver"
          class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="maxUploadSize" value="52428800" />
        <property name="defaultEncoding" value="UTF-8" />
    </bean>


    <!--配置静态资源映射器-->
    <!-- mapping:配置请求的 URL location:配置映射路径-->
    <mvc:resources mapping="/head/**" location="/head/"/>
<!--    <mvc:default-servlet-handler/>-->

    <!--配置拦截器 -->
    <mvc:interceptors>
        <mvc:interceptor>
            <!-- 匹配的是url路径 -->
            <mvc:mapping path="/**"></mvc:mapping>
            <mvc:exclude-mapping path="/user/login"/>
            <mvc:exclude-mapping path="/user/addUser"/>
            <mvc:exclude-mapping path="/user/register"/>
            <bean class="com.wantong.interceptor.LoginHandlerInterceptor"></bean>
        </mvc:interceptor>
    </mvc:interceptors>
</beans>

1.10.web.xml

<?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">
    <!--配置Spring的监听器 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext-*.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!--过滤器-->
    <!--解决中文乱码问题-->
    <filter>
        <filter-name>CharacterEncodingFilter</filter-name>
        <filter-class>
            org.springframework.web.filter.CharacterEncodingFilter
        </filter-class>
        <!-- 设置过滤器中的属性值 -->
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <!-- 过滤所有请求 -->
    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>


    <!-- springmvc的前端控制器 -->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <!-- 拦截/，例如：/user/add  -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

1.11.pojo

1.11.1 Account:

public class Account {
    private Integer id;
    private String name;
    private Double money;
    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 Double getMoney() {
        return money;
    }

    public void setMoney(Double money) {
        this.money = money;
    }

    @Override
    public String toString() {
        return "Account{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", money=" + money +
                '}';
    }
}

1.11.2 User:

package com.wantong.pojo;

public class User {

    private Integer id;
    private String username;
    private String password;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

1.12.mapper

1.12.1 Account:

public interface AccountMapper {
    List<Account> selectAccount();
    
    void addAccount(Account account);

    Account getAccountById(Integer id);

    void updateAccountById(Account account);

    void deleteAccountById(Integer id);
}

<?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.wt.mapper.AccountMapper">
    <select id="selectAccount" resultType="Account">
		select * from account
	</select>

	<insert id="addAccount" parameterType="Account">
        INSERT INTO account(name, money, date, head) VALUES(#{name}, #{money}, #{date}, #{head})
    </insert>

    <select id="getAccountById" parameterType="java.lang.Integer" resultType="Account">
        select * from account where id = #{id}
    </select>

    <update id="updateAccountById" parameterType="Account">
        UPDATE account
        <set>
            <if test="name!=null and name!=''">
                name=#{name},
            </if>
            <if test="money!=null">
                money=#{money},
            </if>
            <if test="date!=null">
                date=#{date},
            </if>
            <if test="head!=null and head!=''">
                head=#{head},
            </if>
        </set>
        WHERE id=#{id}
    </update>

    <delete id="deleteAccountById" parameterType="int">
        delete from account where id = #{id}
    </delete>
</mapper>

1.12.2 User

package com.wantong.mapper;

import com.wantong.pojo.User;

public interface UserMapper {
    void register(User user);

    User login(User user);
}

<?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.wantong.mapper.UserMapper">

    <insert id="register" parameterType="User">
        INSERT INTO user(username, password) VALUES(#{username}, #{password})
    </insert>

    <select id="login" parameterType="User" resultType="User">
        select * from user where username = #{username} and password = #{password}
    </select>

</mapper>

1.13.service

1.13.1 Account

@Service
@Transactional
public class AccountServiceImpl implements AccountService {

    @Autowired
    private AccountMapper accountMapper;

    @Override
    public List<Account> selectAccount() {
        return accountMapper.selectAccount();
    }

    @Override
    public void addAccount(Account account) {
        accountMapper.addAccount(account);
    }

    @Override
    public Account getAccountById(Integer id) {
        return accountMapper.getAccountById(id);
    }

    @Override
    public void updateAccountById(Account account) {
        accountMapper.updateAccountById(account);
    }

    @Override
    public void deleteAccountById(Integer id) {
        accountMapper.deleteAccountById(id);
    }
}

1.13.2 User

@Service
@Transactional
public class UserServiceImpl implements UserService {
    @Autowired
    private UserMapper userMapper;
    @Override
    public void register(User user) {
        userMapper.register(user);
    }

    @Override
    public User login(User user) {
        return userMapper.login(user);
    }
}

1.14.controller

1.14.1 Account

@Controller
@RequestMapping("/account")
public class AccountController {

    @Autowired
    private AccountService accountService;

    @RequestMapping("/selectAccount")
    public String selectAccount(Model model){
        List<Account> list = accountService.selectAccount();
        model.addAttribute("list",list);
        return "select_account";
    }

    @RequestMapping("/toAddAccount")
    public String toAddAccount(){
        return "add_account";
    }

    @RequestMapping("/addAccount")
    public String addAccount(Account account, MultipartFile img, HttpServletRequest request) throws IOException {
        //1.获得tomcat的路径
        String realPath = request.getSession().getServletContext().getRealPath("/head/");
        //2.创建目录
        File file = new File(realPath);
        if(!file.exists()){
            file.mkdirs();
        }
        //3.上传图片
        String filename = img.getOriginalFilename();
        img.transferTo(new File(realPath, filename));

        account.setHead(filename);
        accountService.addAccount(account);
        return "redirect:/account/selectAccount";
    }

    @RequestMapping("/toUpdateAccount")
    public String toUpdateAccount(Integer id ,Model model){
        Account account = accountService.getAccountById(id);
        model.addAttribute("account",account);
        return "update_account";
    }

    @RequestMapping("/updateAccount")
    public String updateAccount(MultipartFile img ,Account account ,HttpServletRequest request) throws IOException {
        if(!img.isEmpty()) {
            //1.获得tomcat的路径
            String realPath = request.getSession().getServletContext().getRealPath("/head/");
            //2.上传图片
            String filename = img.getOriginalFilename();
            img.transferTo(new File(realPath, filename));

            //修改account
            account.setHead(filename);
        }
        accountService.updateAccountById(account);
        return "redirect:/account/selectAccount";
    }

    @RequestMapping("/toDeleteAccount")
    public String toDeleteAccount(Integer id){
        accountService.deleteAccountById(id);
        return "redirect:/account/selectAccount";
    }
}

1.14.2 User

@Controller
@RequestMapping("/user")
public class UserController {


    @Autowired
    private UserService userService;

    @RequestMapping("/register")
    public String selectAccount(){
        return "register";
    }

    @RequestMapping("/addUser")
    public String addUser(User user){
        userService.register(user);
        return "redirect:/index.jsp";
    }

    @RequestMapping("/login")
    public String login(User user , HttpSession session){
        User loginUser = userService.login(user);
        if (loginUser != null){
            session.setAttribute("loginUser",loginUser);
            return "redirect:/account/selectAccount";
        }
        return "redirect:/index.jsp";
    }

}

1.15.converter

//日期数据转换器
public class DateConverter implements Converter<String, Date> {
    @Override
    public Date convert(String source) {
        try {
            DateFormat format = new SimpleDateFormat("yyyy-MM-dd");
            return format.parse(source);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}

1.16.interceptor

//登录拦截器
public class LoginHandlerInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //接收登录之后查询到的结果
        User user = (User) request.getSession().getAttribute("loginUser");
        if (user != null){
            //有值代表登录成功，则放行
            return true;
        }
        //无值代表没有登录，则不放行，重定向到登录页面，重新登录
        response.sendRedirect("/");
        return false;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }
}

1.17.jsp

1.17.1 select_account.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h2>查询所有账户</h2>
欢迎${sessionScope.loginUser.username}
<a href="/account/toAddAccount">新增</a>
<table width="50%" border="1" cellspacing="0" cellpadding="0">
    <tr>
        <th>id</th>
        <th>name</th>
        <th>money</th>
        <th>date</th>
        <th>head</th>
        <th>操作</th>
    </tr>
    <c:forEach var="list" items="${list}">
        <tr>
            <td>${list.id}</td>
            <td>${list.name}</td>
            <td>${list.money}</td>
            <td><fmt:formatDate value="${list.date}" pattern="yyyy-MM-dd"></fmt:formatDate></td>
            <td><img src="/head/${list.head}" height="40px" width="50px"></td>
            <td>
                <a href="/account/toUpdateAccount?id=${list.id}">修改</a>
                <a href="/account/toDeleteAccount?id=${list.id}">删除</a>
            </td>
        </tr>
    </c:forEach>

</table>
</body>
</html>

1.17.2 add_account.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h2>新增账户</h2>
<%-- enctype="multipart/form-data"--%>
<form action="/account/addAccount" method="post" enctype="multipart/form-data">
    账号：<input type="text" name="name"><br>
    金额：<input type="text" name="money"><br>
    日期：<input type="text" name="date"><br>
    头像：<input type="file" name="img"><br>
    <input type="submit" value=" 保  存 ">
</form>
</body>
</html>

1.17.3 update_account.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h2>修改账户</h2>
<%-- enctype="multipart/form-data"--%>
<form action="/account/updateAccount" method="post" enctype="multipart/form-data">
    <input type="hidden" name="id" value="${account.id}">
    账号：<input type="text" name="name" value="${account.name}"><br>
    金额：<input type="text" name="money" value="${account.money}"><br>
    日期：<input type="text" name="date" value="<fmt:formatDate value='${account.date}' pattern='yyyy-MM-dd'/>"><br>
    头像：<input type="file" name="img"><br>
    <img src="/head/${account.head}" width="80px" height="50px"><br>
    <input type="submit" value=" 修  改 ">
</form>
</body>
</html>

1.17.4 register.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h2>注册</h2>

<form action="/user/addUser" method="post">
    账户：<input type="text" name="username"><br>
    密码：<input type="text" name="password"><br>
    <input type="submit" value="注  册">
</form>
</body>
</html>

1.17.5 index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>$Title$</title>
  </head>
  <body>
  <h2>登录</h2>

    <form action="/user/login" method="post">
      账户：<input type="text" name="username"><br>
      密码：<input type="text" name="password"><br>
      没有账号？点击<a href="/user/register">这里</a>注册账号！
      <input type="submit" value="登  录">
    </form>

  </body>
</html>

1.18.测试

1.18.1 增删改查

1.18.2 登录注册

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