Salve,
dovrei creare su un sito web un form per caricare delle immagini, inserirle in un database e all'occorrenza visualizzare le immagini caricate per inserirle sul sito. Per ora mi soffermo solo sulla parte caricare le immagini sul server e database.
Per il form ho creato una pagina html di test, dove provaimg è la mia servlet:
La servet che ho per caricare le immagini è la seguente:Codice PHP:<html>
<head><title>Image Upload</title></head>
<body>
<form action="/CaricamentoImmagini/provaimg" method="post" enctype="multipart/form-data" name="productForm" id="productForm">
<table width="400px" align="center" border=0 style="background-color:ffeeff;">
<tr>
<td align="center" colspan=2 style="font-weight:bold;font-size:20pt;">Image Details</td>
</tr>
<tr>
<td align="center" colspan=2></td>
</tr>
<tr>
<td>Image Link: </td>
<td>
<input type="file" name="file" id="file">
<td>
</tr>
<tr>
<td></td>
<td><input type="submit" name="Submit" value="Submit"></td>
</tr>
<tr>
<td colspan="2"></td>
</tr>
</table>
</form>
</body>
</html>
Però quando vado a caricare il file ottengo un eccezione... qualcuno potrebbe dirmi dove sbaglio e nel caso aiutarmi a risolvere? Grazie!Codice PHP:package classes;
import java.io.*;
import java.sql.*;
import java.util.*;
import java.text.*;
import java.util.regex.*;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class caricamentoimg extends HttpServlet{
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out = response.getWriter();
boolean isMultipart = ServletFileUpload.isMultipartContent(
request);
System.out.println("request: "+request);
if (!isMultipart) {
System.out.println("File Not Uploaded");
} else {
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
List items = null;
try {
items = upload.parseRequest(request);
System.out.println("items: "+items);
} catch (FileUploadException e) {
e.printStackTrace();
}
Iterator itr = items.iterator();
while (itr.hasNext()) {
FileItem item = (FileItem) itr.next();
if (item.isFormField()){
String name = item.getFieldName();
System.out.println("name: "+name);
String value = item.getString();
System.out.println("value: "+value);
} else {
try {
String itemName = item.getName();
Random generator = new Random();
int r = Math.abs(generator.nextInt());
String reg = "[.*]";
String replacingtext = "";
System.out.println("Text before replacing is:-" +
itemName);
Pattern pattern = Pattern.compile(reg);
Matcher matcher = pattern.matcher(itemName);
StringBuffer buffer = new StringBuffer();
while (matcher.find()) {
matcher.appendReplacement(buffer, replacingtext);
}
int IndexOf = itemName.indexOf(".");
String domainName = itemName.substring(IndexOf);
System.out.println("domainName: "+domainName);
String finalimage = buffer.toString()+"_"+r+domainName;
System.out.println("Final Image==="+finalimage);
File savedFile = new File("/Users/danielepach/Documents/SPAZIOJAVA2/apache-tomcat-7.0.26/webapps/ROOT/"+"images\\"+finalimage);
item.write(savedFile);
out.println("<html>");
out.println("<body>");
out.println("<table><tr><td>");
out.println("<img src=images/"+finalimage+">");
out.println("</td></tr></table>");
Connection conn = null;
String url = "jdbc:mysql://localhost:3306/";
String dbName = "test";
String driver = "com.mysql.jdbc.Driver";
String username = "root";
String userPassword = "root";
String strQuery = null;
String strQuery1 = null;
String imgLen="";
try {
System.out.println("itemName::::: "+itemName);
Class.forName(driver).newInstance();
conn = DriverManager.getConnection(url+dbName,username,
userPassword);
Statement st = conn.createStatement();
strQuery = "insert into testimage set image='"+
finalimage+"'";
int rs = st.executeUpdate(strQuery);
System.out.println("Query Executed Successfully++++++++++++++");
out.println("image inserted successfully");
out.println("</body>");
out.println("</html>");
} catch (Exception e) {
System.out.println(e.getMessage());
} finally {
conn.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
}
}
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