1、通過控制臺創(chuàng)建相應(yīng)的數(shù)據(jù)庫，PICTURES表以及數(shù)據(jù)庫連接池：
其中表的創(chuàng)建語句如下：
create table pictures(name varchar(32) not null primary key, pic blob(16M));
更多具體內(nèi)容請參考：http://cwiki.apache.org/GMOxDOC21/web-application-for-jdbc-access.html
2、實現(xiàn)圖片上傳：
package jdbc;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import javax.annotation.Resource;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;
public class ImageUpload extends javax.servlet.http.HttpServlet implements
javax.servlet.Servlet 
{
@Resource(name = "jdbc/usersds")
private DataSource ds;
static final long serialVersionUID = 1L;
public ImageUpload() {
super();
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
doProcess(request, response);
}
protected void doProcess(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
Connection dbconnect = null;
PreparedStatement stmnt = null;
String pic = request.getParameter("ImageLoc");
String name = request.getParameter("ImageName");
try {
File f = new File(pic);
FileInputStream fis = new FileInputStream(f);
dbconnect = ds.getConnection();
stmnt = dbconnect.prepareStatement("INSERT INTO PICTURES ("
+ "NAME," + "PIC )" + " VALUES(?,?)");
stmnt.setString(1, name);
stmnt.setBinaryStream(2, fis, (int) f.length());
stmnt.execute();
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<body>");
out
.println("Congratulations your image has been successfully uploaded");
String html = "<a href='/WebJDBC/ImageDownload?ImageName=" + name
+ ">view the image</a>";
out.println(html);
out.println("</body>");
out.println("</html>");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
dbconnect.close();
stmnt.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
doProcess(request, response);
}
}
3、實現(xiàn)圖片下載：
package jdbc;
import java.io.IOException;
import java.io.OutputStream;
import java.sql.Blob;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.annotation.Resource;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;
public class ImageDownload extends javax.servlet.http.HttpServlet implements
javax.servlet.Servlet {
@Resource(name = "jdbc/usersds")
private DataSource ds;
static final long serialVersionUID = 1L;
public ImageDownload() {
super();
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
doProcess(request, response);
}
protected void doProcess(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
Connection dbconnect = null;
ResultSet rs = null;
PreparedStatement stmnt = null;
try {
dbconnect = ds.getConnection();
String s = request.getParameter("ImageName");
stmnt = dbconnect
.prepareStatement("SELECT PIC FROM PICTURES WHERE NAME=?");
stmnt.setString(1, s);
rs = stmnt.executeQuery();
if (rs.next()) {
// Get as a BLOB
Blob aBlob = rs.getBlob(1);
byte[] b = new byte[4096];
java.io.InputStream ip = aBlob.getBinaryStream();
OutputStream out = null;
int c = 0;
out = response.getOutputStream();
response.setContentType("image/jpeg");
while (c != -1) {
c = ip.read(b);
out.write(b);
out.flush();
}
ip.close();
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
dbconnect.close();
stmnt.close();
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
doProcess(request, response);
}
}
4、圖片上傳JSP頁面：
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!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=ISO-8859-1">
<title>Image Upload</title>
</head>
<body>
<h2>Select a Image and Upload it</h2>
<form action="/WebJDBC/ImageUpload">
<table>
<tr>
<td>Location of the Image(full path)</td>
<td><Input type="text" name="ImageLoc"></td>
</tr>
<tr>
<td>Name of the Image(Unique Name)</td>
<td><Input type="text" name="ImageName"></td>
</tr>
<tr>
<td><Input type="submit" value="submit"></td>
<tr>
</table>
</form>
</body>
</html>
5、圖片下載JSP頁面：
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!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=ISO-8859-1">
<title>Download Image</title>
</head>
<body>
<h2>Name a Image to download</h2>
<form action="/WebJDBC/ImageDownload">
<table>
<tr>
<td>
Name of the Image
</td>
<td>
<Input type="text" name="ImageName">
</td>
</tr>
<tr>
<td>
<Input type="submit" value="submit">
</td>
<tr>
</table>
</form>
</body>
</html>
6、geronimo-web.xml的配置：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://geronimo.apache.org/xml/ns/j2ee/web-2.0.1"
xmlns:nam="http://geronimo.apache.org/xml/ns/naming-1.2"
xmlns:sec="http://geronimo.apache.org/xml/ns/security-2.0"
xmlns:sys="http://geronimo.apache.org/xml/ns/deployment-1.2">
<sys:environment>
<sys:moduleId>
<sys:groupId>default</sys:groupId>
<sys:artifactId>WebJDBC</sys:artifactId>
<sys:version>1.0</sys:version>
<sys:type>car</sys:type>
</sys:moduleId>
<sys:dependencies>
<sys:dependency>
<sys:groupId>console.dbpool</sys:groupId>
<sys:artifactId>jdbc_usersds</sys:artifactId>
</sys:dependency>
</sys:dependencies>
</sys:environment>
<context-root>/WebJDBC</context-root>
<nam:resource-ref>
<nam:ref-name>jdbc/usersds</nam:ref-name>
<nam:pattern>
<nam:groupId>console.dbpool</nam:groupId>
<nam:artifactId>jdbc_usersds</nam:artifactId>
<nam:name>jdbc/usersds</nam:name>
</nam:pattern>
</nam:resource-ref>
</web-app>
7、WEB.XML文件的配置：
<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>WebJDBC</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<description></description>
<display-name>ImageUpload</display-name>
<servlet-name>ImageUpload</servlet-name>
<servlet-class>jdbc.ImageUpload</servlet-class>
</servlet>
<servlet>
<description></description>
<display-name>ImageDownload</display-name>
<servlet-name>ImageDownload</servlet-name>
<servlet-class>jdbc.ImageDownload</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ImageUpload</servlet-name>
<url-pattern>/ImageUpload</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>ImageDownload</servlet-name>
<url-pattern>/ImageDownload</url-pattern>
</servlet-mapping>
</web-app>
8、發(fā)布及測試：
將應(yīng)用打包成WebJDBC.war，發(fā)布之后通過訪問
http://localhost:8080/WebJDBC/即可看到程序運行效果，附件請點擊此處下載http://www.tkk7.com/Files/kinkding/WebJDBC.rar