SpringMVC带有头像的上传注册，及文件下载

版权声明：未经本人同意，不得私自转载 https://blog.csdn.net/weixin_41866744/article/details/88122515

环境搭建：

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <!-- 上下文参数 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:applicationContext.xml</param-value>
	</context-param>
	<!-- 监听器 -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	<!-- SpringMVC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>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	<!-- 字符编码过滤器 -->
	<filter>
		<filter-name>encoding</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>encoding</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
</web-app>

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" 
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx" 
	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/aop
        http://www.springframework.org/schema/aop/spring-aop.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" default-autowire="byName">
        
	<!-- 注解扫描 -->        
	<context:component-scan base-package="com.tao.service.impl"></context:component-scan>
	
	<!-- 加载属性配置文件 -->
	<context:property-placeholder location="classpath:db.properties"/>
	
	<!-- 数据源 -->
	<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
		<property name="driverClassName" value="${jdbc.driver}"></property>
    	<property name="url" value="${jdbc.url}"></property>
    	<property name="username" value="${jdbc.username}"></property>
    	<property name="password" value="${jdbc.password}"></property>
	</bean>
	
	 <!-- SqlSessionFactory -->
	 <bean id="factory" class="org.mybatis.spring.SqlSessionFactoryBean">
    	<property name="dataSource" ref="dataSource"></property>
    	<property name="typeAliasesPackage" value="com.tao.pojo"></property>
    </bean>
    
    <!-- 扫描器 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    	<property name="basePackage" value="com.tao.mapper"></property>
    	<property name="sqlSessionFactoryBeanName" value="factory"></property>
    </bean>
    
    <!-- 事务管理器 -->
    <bean id="txManage" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    	<property name="dataSource" ref="dataSource"></property>
    </bean>
    
    <!-- 声明式事务 -->
    <tx:advice id="txAdvice" transaction-manager="txManage">
    	<tx:attributes>
    		<tx:method name="ins*"/>
    		<tx:method name="del*"/>
    		<tx:method name="upd*"/>
    		<tx:method name="*" read-only="true"/>
    	</tx:attributes>
    </tx:advice>
    
    <!-- 配置aop -->
    <aop:config>
    	<aop:pointcut expression="execution(* com.tao.service.impl.*.*(..))" id="mypoint"/>
    	<aop:advisor advice-ref="txAdvice" pointcut-ref="mypoint"/>
    </aop:config>
        
</beans>

db.properties:

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url = jdbc:mysql://localhost:3306/ssm
jdbc.username = root
jdbc.password = root

log4j.properties:

log4j.rootCategory=ERROR, CONSOLE ,LOGFILE

log4j.logger.com.tao.mapper=DEBUG

log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%C %d{YYYY-MM-dd hh:mm:ss}  %m %n

log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=MyBatis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%C %m %L %n

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:mvc="http://www.springframework.org/schema/mvc"
	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
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
	
	<!-- 扫描注解 -->
    <context:component-scan base-package="com.tao.controller"></context:component-scan>
    
    <!-- 注解驱动 -->
    <mvc:annotation-driven></mvc:annotation-driven>
    
    <!-- 静态资源 -->
    <mvc:resources location="/js/" mapping="/js/**"></mvc:resources>
    <mvc:resources location="/images/" mapping="/images/**"></mvc:resources>
    <mvc:resources location="/files/" mapping="/files/**"></mvc:resources>
    
    <!-- Mutilpart解析器 -->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"></bean>

</beans>

实体：

package com.tao.pojo;

public class Files {
	
	private int id;
	private String name;
	private int count;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getCount() {
		return count;
	}
	public void setCount(int count) {
		this.count = count;
	}
	

}

package com.tao.pojo;

public class Users {

	private int id;
	private String username;
	private String password;
	private String photo;
	public int getId() {
		return id;
	}
	public void setId(int 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;
	}
	public String getPhoto() {
		return photo;
	}
	public void setPhoto(String photo) {
		this.photo = photo;
	}
	
}

package com.tao.pojo;

public class Users {

	private int id;
	private String username;
	private String password;
	private String photo;
	public int getId() {
		return id;
	}
	public void setId(int 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;
	}
	public String getPhoto() {
		return photo;
	}
	public void setPhoto(String photo) {
		this.photo = photo;
	}
	
}

数据层mapper:

package com.bjsxt.mapper;

import java.util.List;

import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;

import com.bjsxt.pojo.Files;

public interface FilesMapper {
	@Select("select * from files")
	List<Files> selAll();
	@Update("update files set count=count+1 where id=#{0}")
	int updCountById(int id);
}

package com.bjsxt.mapper;

import org.apache.ibatis.annotations.Insert;

import com.bjsxt.pojo.Users;

public interface UsersMapper {
	@Insert("insert into users values (default,#{username},#{password},#{photo})")
	int insUsers(Users users);
}

业务层及其实现类：

package com.tao.service;

import java.util.List;

import com.tao.pojo.Files;
import com.tao.pojo.Users;

public interface FilesService {
	/**
	 * 显示全部
	 * @return
	 */
	List<Files> show();
	/**
	 * 根据id修改资料下载次数
	 * @param id
	 * @return
	 */
	int updCount(int id,Users users,String name);
}

package com.tao.service;

import com.tao.pojo.Users;

public interface UsersService {
	
	int insRegister(Users users);

}

package com.tao.service.impl;

import java.util.List;

import javax.annotation.Resource;

import org.apache.log4j.Logger;
import org.springframework.stereotype.Service;

import com.tao.mapper.FilesMapper;
import com.tao.pojo.Files;
import com.tao.pojo.Users;
import com.tao.service.FilesService;

@Service
public class FilesServiceImpl implements FilesService {
	
	@Resource
	private FilesMapper filesMapper;

	@Override
	public List<Files> show() {
		return filesMapper.selAll();
	}

	@Override
	public int updCount(int id, Users users, String name) {
		Logger logger = Logger.getLogger(FilesServiceImpl.class);
		logger.info(users.getUsername()+"下载了"+name);
		return filesMapper.updCountById(id);
	}

}

package com.tao.service.impl;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import com.tao.mapper.UsersMapper;
import com.tao.pojo.Users;
import com.tao.service.UsersService;

@Service
public class UsersServiceImpl implements UsersService{
	
	@Resource
	private UsersMapper usersMapper;
	
	@Override
	public int insRegister(Users users) {
		return usersMapper.insUsers(users);
	}

}

controller:

package com.tao.controller;

import java.io.File;
import java.io.IOException;

import javax.annotation.Resource;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.io.FileUtils;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.tao.pojo.Users;
import com.tao.service.FilesService;

@Controller
public class FilesController {

	@Resource
	private FilesService filesServiceImpl;
	
	
	@RequestMapping("show")
	public String show(Model model){
		model.addAttribute("list", filesServiceImpl.show());
		return "/main.jsp";
	}
	
	@RequestMapping("download")
	public void download(int id,String name,HttpServletResponse res,HttpServletRequest req) throws IOException{
		filesServiceImpl.updCount(id,(Users)req.getSession().getAttribute("user"),name);
		res.setHeader("Content-Disposition", "attachment;filename="+name);
		ServletOutputStream os = res.getOutputStream();
		File file = new File(req.getServletContext().getRealPath("files"),name);
		os.write(FileUtils.readFileToByteArray(file));
		os.flush();
		os.close();
	}
}

package com.tao.controller;

import java.io.File;
import java.io.IOException;
import java.util.UUID;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

import org.apache.commons.io.FileUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;

import com.tao.pojo.Users;
import com.tao.service.UsersService;

@Controller
public class UsersController {

	@Resource
	private UsersService usersServiceImpl;
	
	
	@RequestMapping("register")
	public String register(Users users,MultipartFile file,HttpServletRequest req){
		String fileName = UUID.randomUUID().toString()+file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf("."));
		String path = req.getServletContext().getRealPath("images")+"/"+fileName;
		try {
			FileUtils.copyInputStreamToFile(file.getInputStream(), new File(path));
		} catch (IOException e) {
			e.printStackTrace();
		}
		//只能取到webapps文件夹内容
		users.setPhoto(fileName);
		int index = usersServiceImpl.insRegister(users);
		if(index>0){
			req.getSession().setAttribute("user", users);
			return "redirect:/show";
		}else{
			return "redirect:/register.jsp";
		}
	}
}

前台页面:register.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>Insert title here</title>
<script type="text/javascript" src="js/jquery-1.7.2.js"></script>
<script type="text/javascript">
	$(function(){
		var username = false;
		var password = false;
		var passwordSure = false;
		//用户名的验证
		$(":text:eq(0)").blur(function(){
			if($(this).val()==""){
				$(this).next().css("color","red").html("X");
				username = false;
			}else{
				$(this).next().css("color","green").html("√");
				username = true;
			}
		});
		//确认密码
		$(":password:eq(1)").blur(function(){
			if($(this).val()==""||$(this).val()!=$(":password:eq(0)").val()){
				$(this).next().css("color","red").html("X");
				passwordSure = false;
			}else{
				$(this).next().css("color","green").html("√");
				passwordSure = true;
			}
		});
		
		$(":submit").click(function(){
			if(username==false||password==false||passwordSure==false||$(":file").val()==""){
				alert("请添加完整信息");
				return false;
			}
		});
	});
</script>

</head>
<body>
<form action="register" method="post" enctype="multipart/form-data">
	用户名:<input type="text" name="username"/><span></span><br/>
	密码:<input type="password" name="password"/><span></span><br/>
	确认密码:<input type="password" name="passwordSure"/><span></span><br/>
	头像:<input type="file" name="file"/><br/>
	<input type="submit" value="注册"/>
</form>
</body>
</html>

main.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!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>Insert title here</title>
<script type="text/javascript" src="js/jquery-1.7.2.js"></script>
<script type="text/javascript">
	$(function(){
		$("a").click(function(){
			//parent() 父标签
			//prev() 前一个兄弟标签
			//jquery中规范,对象名以$开头
			var $td =$(this).parent().prev();
			//html()返回值字符串
			$td.html(parseInt($td.html())+1);
		});
	})
</script>
</head>
<body>
<table border="1">
	<tr>
		<td>资料名称</td>
		<td>下载次数</td>
		<td>操作</td>
	</tr>
	<c:forEach items="${list }" var="file">
		<tr>
			<td>${file.name }</td>
			<td>${file.count }</td>
			<td><a href="download?id=${file.id }&name=${file.name}">下载</a></td>
		</tr>
	</c:forEach>
</table>
</body>
</html>