下传图片和文件保存到数据库中-数据库教程-爱易网页

下传图片和文件保存到数据库中

日期：2014-05-16　浏览次数：20528 次

上传图片和文件保存到数据库中

package demo;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.jspsmart.upload.File;
import com.jspsmart.upload.Request;
import com.jspsmart.upload.SmartUpload;
import com.jspsmart.upload.SmartUploadException;

import demo.sql.DaoTest;
import demo.sql.SQlConnectionTest;

public class UploadFile extends HttpServlet {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private PreparedStatement ps = null;

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		// TODO Auto-generated method stub
		super.doGet(req, resp);
	}

	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		DaoTest dt = new DaoTest();
		SmartUpload su = new SmartUpload();
		su.initialize(this.getServletConfig(), req, resp);
		su.setMaxFileSize(500 * 1024 * 1024);
		try {
			su.upload("GBK");
		} catch (SmartUploadException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
		Request smartRequest = su.getRequest();
		String name = smartRequest.getParameter("name");

		try {

			int count = su.getFiles().getCount();
			for (int i = 0; i < count; i++) {
				File myFile = su.getFiles().getFile(i);
				String fileName = myFile.getFieldName();
				String path = this.getServletContext().getRealPath("/");
				path = path + fileName;
				int fileSize = myFile.getSize();
				myFile.saveAs(path, su.SAVE_PHYSICAL);
				java.io.File file = new java.io.File(path);
				FileInputStream fis = new FileInputStream(file);
				InputStreamReader isr = new InputStreamReader(
						new FileInputStream(file));

				String sql = "insert into filetest (name,content) values(?,?)";
				System.out.println(sql);

				try {
					PreparedStatement ps = dt.getConn().prepareStatement(sql);
					ps.setString(1, name);
					// ps.setBinaryStream(2, fis, (int) fileSize);
					// ps.setBlob(2, fis,(long)fileSize);
					// ps.setCharacterStream(2, isr, (int) fileSize);
					ps.setBinaryStream(2, fis, (int) fileSize);
					dt.getConn().setAutoCommit(true);
					ps.executeUpdate();
					dt.getConn().commit();

				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} finally {
					fis.close();
					isr.close();
					file.delete();
					try {
						SQlConnectionTest.closeAll(dt.getConn(), ps, null);
						ps = null;
					} catch (SQLException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}
			}
		} catch (SmartUploadException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		
	}

}

<%@ page language="java" contentType="text/html; charset=GBK"
    pageEncoding="GBK"%>
<!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=GBK">
<title>Insert title here</title>
</head>
<body>
	<form id="myForm" method="post" action="UploadFile.action" enctype="multipart/form-data">
		<table>
			<tr>
			<td>
				用户名：<input type="text" id="name" name="name"/>
			</td>
			</tr>
			<tr>
				<td>
					<input type="file" id="content" name="content"/>
				</td>
			</tr>
		</table>
		<input type="submit" id="commit" name="commit"/>
	</form>
&

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下传图片和文件保存到数据库中

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