Salve ho scritto il seguente codice
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<html>
<%@ page language="java" import="javazoom.upload.*,java.util.*" %>
<%@ page errorPage="ExceptionHandler.jsp" %>
<jsp:useBean id="upBean" scope="application" class="javazoom.upload.UploadBean" >
<%
Properties props = new Properties();
// Modify info below to fit to your database settings.
props.put("user","postgres");
props.put("password","postgres");
upBean.setDatabasestore("sun.jdbc.odbc.JdbcOdbcDri ver",
"jdbcostgresql://localhost:5432/cms", props);
// If you have get a JDBC Connection from a javax.sql.DataSource
// Then use upBean.setDatabasestore(YourConnection);
// Also, uncomment and modify variables below if you need to map to your own database schema.
//UploadBean.SQLUPLOADTABLE = "UPLOADS";
//UploadBean.SQLUPLOADID = "UPLOADID";
//UploadBean.SQLUPLOADFILENAME = "FILENAME";
//UploadBean.SQLUPLOADFILE = "BINARYFILE";
// Note that if you need to modify SQL request then see UploadBean
// add-ons section to plug a custom DBStore implementation (BLOB, ...).
%>
</jsp:useBean>
<jsp:setProperty name="upBean" property="overwrite" value="true" />
<head>
<title>Samples : Database Upload</title>
<style TYPE="text/css">
<!--
.style1 {
font-size: 12px;
font-family: Verdana;
}
-->
</style>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<ul class="style1">
<%
if (MultipartFormDataRequest.isMultipartFormData(requ est))
{
// Uses MultipartFormDataRequest to parse the HTTP request.
MultipartFormDataRequest mrequest = new MultipartFormDataRequest(request);
String todo = null;
if (mrequest != null) todo = mrequest.getParameter("todo");
if ( (todo != null) && (todo.equalsIgnoreCase("upload")) )
{
Hashtable files = mrequest.getFiles();
if ( (files != null) && (!files.isEmpty()) )
{
UploadFile file = (UploadFile) files.get("uploadfile");
if (file != null) out.println("[*]Form field : uploadfile"+"
Uploaded file : "+file.getFileName()+" ("+file.getFileSize()+" bytes)"+"
Content Type : "+file.getContentType());
// Store uploaded files in database now. Third parameter allows to pass options Map.
HashMap options = null;
// Sample advanced options.
//options = new HashMap();
//options.put("dbstore.uploadid","id."+System.curren tTimeMillis());
//options.put("dbstore.filesize","enabled");
//options.put("dbstore.filetype","enabled");
//options.put("dbstore.customcolumn.created_date",ne w Date());
upBean.store(mrequest, "uploadfile", options);
// int lastid = ((DefaultDBStore)upBean.getDatabasestoreimplementa tion()).getLastId();
}
else
{
out.println("[*]No uploaded files");
}
}
else out.println("
todo="+todo);
}
Vector history = upBean.getHistory();
int amount = 0;
if (history != null) amount = history.size();
%>
(Uploaded files : <%= amount %>)[/list]
<form method="post" action="DatabaseUpload.jsp" name="upform" enctype="multipart/form-data">
<table width="60%" border="0" cellspacing="1" cellpadding="1" align="center" class="style1">
<tr>
<td align="left">Select
a file to upload :</td>
</tr>
<tr>
<td align="left">
<input type="file" name="uploadfile" size="50">
</td>
</tr>
<tr>
<td align="left">
<input type="hidden" name="todo" value="upload">
<input type="submit" name="Submit" value="Upload">
<input type="reset" name="Reset" value="Cancel">
</td>
</tr>
</table>
"
dove vorrei fare l'upload di un file su un db postgres,ma mida il seguente errore java.lang.NullPointerException; chi mi aiuta a capire dove sbaglio??? grazie assai
Rispondi quotando
