java-上传文件与现实上传文件

/*
SQLyog Ultimate v12.09 (64 bit)
MySQL - 5.5.53 : Database - fileupload
*********************************************************************
*//*!40101 SET NAMES utf8 */;/*!40101 SET SQL_MODE=''*/;/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
CREATE DATABASE /*!32312 IF NOT EXISTS*/`fileupload` /*!40100 DEFAULT CHARACTER SET utf8 */;USE `fileupload`;/*Table structure for table `fileupload` */DROP TABLE IF EXISTS `fileupload`;CREATE TABLE `fileupload` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键',
`name` varchar(255) DEFAULT NULL COMMENT '产品名称',
`path` varchar(255) DEFAULT NULL COMMENT '产品存储路径',
`realname` varchar(255) DEFAULT NULL COMMENT '产品描述图片真实名称',
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=22 DEFAULT CHARSET=utf8;/*Data for the table `fileupload` */insert into `fileupload`(`id`,`name`,`path`,`realname`) values (20,'jack','/2017/8/16/cfd0d04e92714dcdb08c64c9db5fa638.jpg','jklh.jpg'),(21,'小米','/2017/8/16/72ee3800c2e44679a5df17a083f7759d.jpg','timg.jpg');/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

package com.gordon.dao;import java.sql.SQLException;
import java.util.List;import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;import com.gordon.domain.Product;
import com.gordon.utils.DataSourceUtil;public class ProductDao {/**
* 添加产品
* @param product_name
* @param fileRealName
* @param saveDbPath
* @return
* @throws SQLException
*/
public int addProduct(String product_name, String fileRealName, String saveDbPath) throws SQLException {
QueryRunner qr = new QueryRunner(DataSourceUtil.getDataSource());
String sql = "INSERT INTO fileupload (name,realname, path) VALUES (?, ?, ?)";
return qr.update(sql, product_name, fileRealName, saveDbPath);
}/**
*
* @return
* @throws SQLException
*/
public List<Product> getAllProduct() throws SQLException {
QueryRunner qr = new QueryRunner(DataSourceUtil.getDataSource());
String sql = "select * from fileupload";
return qr.query(sql, new BeanListHandler<Product>(Product.class));
}}

package com.gordon.domain;public class Product {private int id;
private String name;
private String realname;
private String path;public Product() {
}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 String getRealname() {
return realname;
}public void setRealname(String realname) {
this.realname = realname;
}public String getPath() {
return path;
}public void setPath(String path) {
this.path = path;
}
}

package com.gordon.service;import java.sql.SQLException;
import java.util.List;import com.gordon.dao.ProductDao;
import com.gordon.domain.Product;public class ProductService {/**
* 添加产品
* @param product_name
* @param fileRealName
* @param saveDbPath
* @return
* @throws SQLException
*/
public int addProduct(String product_name, String fileRealName, String saveDbPath) throws SQLException {
return new ProductDao().addProduct(product_name, fileRealName, saveDbPath);
}/**
* 获取所有商品
* @return
* @throws SQLException
*/
public List<Product> getAllProduct() throws SQLException {
return new ProductDao().getAllProduct();
}}

package com.gordon.utils;import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;import javax.sql.DataSource;import com.mchange.v2.c3p0.ComboPooledDataSource;public class DataSourceUtil {
private static ComboPooledDataSource ds = new ComboPooledDataSource();/**
* 获取数据源
*
* @return 连接池
*/
public static DataSource getDataSource() {
return ds;
}/**
* 获取连接
*
* @return 连接
* @throws SQLException
*/
public static Connection getConnection() throws SQLException {
return ds.getConnection();
}/**
* 释放资源
*
* @param conn
* 连接
* @param st
* 语句执行者
* @param rs
* 结果集
*/
public static void closeResource(Connection conn, Statement st, ResultSet rs) {
closeResultSet(rs);
closeStatement(st);
closeConn(conn);
}/**
* 释放连接
*
* @param conn
* 连接
*/
public static void closeConn(Connection conn) {
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
conn = null;
}}/**
* 释放语句执行者
*
* @param st
* 语句执行者
*/
public static void closeStatement(Statement st) {
if (st != null) {
try {
st.close();
} catch (SQLException e) {
e.printStackTrace();
}
st = null;
}}/**
* 释放结果集
*
* @param rs
* 结果集
*/
public static void closeResultSet(ResultSet rs) {
if (rs != null) {
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
rs = null;
}}
}

package com.gordon.web.servlet;import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Calendar;
import java.util.UUID;import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Part;import org.apache.commons.io.IOUtils;import com.gordon.service.ProductService;/**
* 添加产品
*/
@WebServlet("/addProduct")
@MultipartConfig
public class AddProductServlet extends HttpServlet {private static final long serialVersionUID = 1L;protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {request.setCharacterEncoding("utf-8");String product_name = request.getParameter("name");
Part part = request.getPart("file");// 获取真实文件名称
String fileRealName = this.getFileRealName(part);// 获取服务器上的绝对存储路径与数据库上的相对路径
String[] savePath = this.getSavePath(request, fileRealName);int res = 0;
try {
// 上传文件
this.uploadFile(part, savePath[0]);// 将数据存入数据库
res = new ProductService().addProduct(product_name, fileRealName, savePath[1]);
} catch (Exception e) {
e.printStackTrace();
}if (res != 1) {
request.setAttribute("msg", "添加文件失败！");
request.getRequestDispatcher("/error_page.jsp").forward(request, response);
}response.sendRedirect(request.getContextPath() + "/showProduct");
}/**
* 获取保存路径 [0] 服务器存储路径 [1]数据库存储路径
*
* @param request
* @param fileRealName
* @return
*/
private String[] getSavePath(HttpServletRequest request, String fileRealName) {
// 获取存储时的随机产品名称
String randomFilePath = this.getRandomFileName(fileRealName);// 获取存储绝对路径
String savepath = request.getServletContext().getRealPath("/upload");
// 获取存储目录 如：/2017/12/23/ 2017-12-23
String savedir = this.getSaveDir();// 最终存储路径
String saveWebPosition = savepath + savedir;
String saveDbPosition = savedir;// 服务器文件夹不存在则创建
File file = new File(saveWebPosition);
if (!file.exists()) {
file.mkdirs();
}String[] res = { saveWebPosition + randomFilePath, saveDbPosition + randomFilePath };
return res;
}/**
* 获取存储目录
*
* @return
*/
private String getSaveDir() {
Calendar now = Calendar.getInstance();
int year = now.get(Calendar.YEAR);
int month = now.get(Calendar.MONTH) + 1;
int day = now.get(Calendar.DAY_OF_MONTH);return ("/" + year + "/" + month + "/" + day + "/").toString();
}/**
* 获取上传文件名称
*
* @param part
* @return
*/
private String getFileRealName(Part part) {
String contentDisposition = part.getHeader("Content-Disposition");
String filerealname = contentDisposition.substring(contentDisposition.lastIndexOf("filename="));
return filerealname.substring(10, filerealname.length() - 1);
}/**
* 上传文件
*
* @param part
*/
private void uploadFile(Part part, String saveWebPath) throws Exception {
InputStream is = part.getInputStream();
FileOutputStream os = new FileOutputStream(saveWebPath);IOUtils.copy(is, os);is.close();
os.close();part.delete();
}/**
* 获取随机产品名称
*
* @param part
* @return
*/
private String getRandomFileName(String fileRealName) {
String fileSuffix = fileRealName.substring(fileRealName.lastIndexOf("."));
String randomName = UUID.randomUUID().toString().replace("-", "").toLowerCase();
return randomName + fileSuffix;
}
}

package com.gordon.web.servlet;import java.io.IOException;
import java.sql.SQLException;
import java.util.List;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import com.gordon.domain.Product;
import com.gordon.service.ProductService;/**
* 展示数据
*/
@WebServlet("/showProduct")
public class ShowProductServlet extends HttpServlet {private static final long serialVersionUID = 1L;protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {List<Product> list = null;
try {
list = new ProductService().getAllProduct();
} catch (SQLException e) {
e.printStackTrace();
}request.setAttribute("list", list);
request.getRequestDispatcher("/show_product.jsp").forward(request, response);
}protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
}

<c3p0-config>
<!-- 默认配置，如果没有指定则使用这个配置 -->
<default-config>
<!-- 基本配置 -->
<property name="driverClass">com.mysql.jdbc.Driver</property>
<property name="jdbcUrl">jdbc:mysql://localhost:3306/fileupload</property>
<property name="user">root</property>
<property name="password">root</property><!--扩展配置-->
<property name="checkoutTimeout">30000</property>
<property name="idleConnectionTestPeriod">30</property>
<property name="initialPoolSize">10</property>
<property name="maxIdleTime">30</property>
<property name="maxPoolSize">100</property>
<property name="minPoolSize">10</property>
<property name="maxStatements">200</property>
</default-config> <!-- 命名的配置 -->
<named-config name="itcast">
<property name="driverClass">com.mysql.jdbc.Driver</property>
<property name="jdbcUrl">jdbc:mysql://127.0.0.1:3306/xxxx</property>
<property name="user">root</property>
<property name="password">1234</property><!-- 如果池中数据连接不够时一次增长多少个 -->
<property name="acquireIncrement">5</property>
<property name="initialPoolSize">20</property>
<property name="minPoolSize">10</property>
<property name="maxPoolSize">40</property>
<property name="maxStatements">20</property>
<property name="maxStatementsPerConnection">5</property>
</named-config>
</c3p0-config>

<%@ 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>
</head>
<body>
<form action="${ pageContext.request.contextPath }/addProduct" method="post"
enctype="multipart/form-data">
<table>
<tr>
<td>产品名称：</td>
<td><input type="text" name="name" /></td>
</tr>
<tr>
<td>产品图片：</td>
<td><input type="file" name="file" /></td>
</tr>
<tr>
<td colspan="2"><input type="submit" value="添加产品" /></td>
</tr>
</table>
</form>
</body>
</html>

<%@ 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>
</head>
<body>
${ msg }
</body>
</html>

<%@ 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>
</head>
<body>
<a href="${ pageContext.request.contextPath }/add_product.jsp">添加产品</a>
</body>
</html>

<%@ 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>
</head>
<body>
<table border="1">
<tr>
<td>id</td>
<td>产品名称</td>
<td>产品展示</td>
</tr><c:forEach var="p" items="${ list }">
<tr>
<td>${ p.id }</td>
<td>${ p.name }</td>
<td><img alt="" width="100" height="100" src="${ pageContext.request.contextPath}/upload${ p.path }"></td>
</tr>
</c:forEach></table>
</body>
</html>