I'm working on a mini-project that can upload certain files to a server. I'm using java and mysql. According to things I read the 'right way' is to save the file to a folder in my server and put the file path in mysql.
A Part of my code:
File source = new File(fileChooser.getSelectedFile().getPath());
File dest = new File(destChooser.getSelectedFile().getPath());
String tempUpdate1 = "Insert into images (ID, file_name, file_path)"
+ "VALUES ('"+ID+"' , '"+fileChooser.getSelectedFile().getName()+"' , '"+destChooser.getSelectedFile().getPath()+"')";
conn = Connect.ConnectDB();
Statement stemt2 = conn.createStatement();
stemt2.executeUpdate(tempUpdate1);
FileUtils.copyFileToDirectory(source, dest);
JOptionPane.showMessageDialog(null, "File Uploaded Successfully!");
then i tried running it. It successfully copied the file to my desired folder. The problem is in my
mysql table where i save the path of the file.
The table's like this:
| ID | file_name | file_path |
| 1 | sample.docx | C:UsersMEDesktopest |
| 2 | sample.jpg | C:UsersMEDesktopest |
I tried seeing the output of the file path myself using JOptionPane it returned normal with the separators, but using the same variable and puting it in mysql, that's what i get as seen above, no separators.
Am i really doing it right? I did what is instructed on the topics related to this but no one seems to be complaining with the path. I'm wondering if did something wrong somewhere.
I'm planning to access the file using the file path as my project progress. Just would like to ask if the path file is accessible since i dont see any separator such as '//', '/' or '\'
it is almost good.
imagine that you have two files named same way. you can have only one of them on your server. I would save file under coded name like time in milis at moment of saving action.
Your table would contain then original name sample.jpg and file name 49473996034732 for example (in separate column of course). This way you can save as many sample.jpg as you like. Request link should point to file name 49473996034732 so you always will know for which file is request.
Then in response, when you set content to proper type you can set user friendly name.
modified table
| ID | file_name | server_file_name | file_path |
| 1 | sample.docx | 49473996034732 | C:UsersMEDesktopest |
| 3 | sample.jpg | 49473996034850| C:UsersMEDesktopest |
| 2 | sample.jpg | 49473996034988 | C:UsersMEDesktopest |
second thing is that i noticed is that you allow user to pick destination folder for containing file. Shouldn't is be fixed location? This way it would be more like server behavior. But im guessing this is just an example code fast codded in Swing
Related
When I use table column in "scenario outline" line in cucumber feature file, not in any step, using java and intellij-idea such as the following:
Scenario Outline: my test <lastname>
Given Customer Ask Chatbot "My name is <fname>"
When Verify Chatbot responses contain
"""
Hello <fname>!
"""
Then Customer clicks on "Yes"
Examples:
| fname | lastname |
| ahmed | amir |
| saad | sameh |
| mohamed | morad |
"fname" is acting normal, but "lastname" column is marked as unused, as it is only used in the "scenario outline" line and not in any step.
My question is, does this happen with you? and if so, is this the intended behavior? or is it an issue that needs to be reported and fixed? and if so, is it a problem within intellij or cucumber or something else?
Thank you
There's an open ticket for this issue in IDEA: https://youtrack.jetbrains.com/issue/IDEA-261249, you can vote for it
Most likely, the feature file is not placed in "expected" (by Intellij) place.
Put it under resources folder.
To have a correct display in Intellij, sometimes it is needed to mark that directory as "test resources root"
there is also a small timeout to display the column as "used"
I have files with data (file1_01032021, file2_02032021) and corresponding information files (info1_01032020, info2_02032020).
file1 belongs to info1 and file2 belongs to info2. They arrive in hdfs and the filenames are logged in a database when a file arrived. In the information file, the name to the data file is pointed.
So info1 has content for example:
"blabla" : "blabla"
"dataFile" : "info1_01032020"
I have created a variable r which is a ResultSet of the data from this table where the type of the file is information.
The table looks like:
date | filePath | type
01032020 | info1 | information
02032020 | info2 | information
01032021 | file1 | data
02032021 | file2 | data
In the ResultSet (r) the following rows are stored:
01032020 | info1 | information
02032020 | info2 | information
For me the column "filePath" is interesting. I have to find the corresponding information filename for each data file.
I need some kind of Iterator through this ResultSet and look into the file and see to which file with data belongs. I have the following code:
if (r.next())
informationFile = r.getString("filePath");
but it takes only the last loaded file and does not check to which data file it belongs.
Can anyone help me with the iteration with some example code?
If I understand correctly, you can do this like that :
while (r.next()) {
informationFile = r.getString("filePath");
String file = "file"+informationFile.substring(4);
readFile(file); // You need to create this method
}
I have two machines that will be an application server in each.
The machine X is dynamic sources. The machine Y is static sources.
Thus, the user is always connected to "x.com".
When he does one upload an image, I need to send this information to "y.com".
How can I pass (at the time of upload) the byte image server x.com to save on y.com ?
See here what I started doing:
http://forum.primefaces.org/viewtopic.php?f=3&t=30239&p=96776#p96776
Balusc answered very well here:
Simplest way to serve static data from outside the application server in a Java web application
But my case is slightly diferent.
I appreciate any help!
Thank you!
I think the simplest way is to create a database table on X.com to track all images your user store on Y.com, for example:
+----------+-------------------------+
| user_id | image_path |
+----------+-------------------------+
| 0 | /images/image_xxxxx.jpg |
| 0 | /images/image_xxxxx.jpg |
| 2 | /images/image_xxxxx.jpg |
| 2 | /images/image_xxxxx.jpg |
| 3 | /images/image_xxxxx.jpg |
+----------+-------------------------+
and then serve on X.com all your images redirecting the browser to Y.com
X.com:
<img src="Y.com/images/image.xxxxx.jpg" />
Use share network disk like: samba or NFS.
Ootionaly you can consider to setup rsyncs if you have Linux/U*x hosts
I'm interested in a way of outputting some objects to a table like way the objects. Concrete example would be something like:
-------------------------------------------
| Name | foo | bar |
-------------------------------------------
| asdas | dsfsd |1233.23 |
| adasdasd | fsdfs |3.23 |
| sdasjd | knsdfsd |13.23 |
| lkkkj | dsfsd |2343.23 |
-------------------------------------------
Or an ms office / open office excel file.(is there an api doc for this type of outputting data in specific editors? like how to define a table in OpenPffice)?
I'm asking this because I would like to know the best way doing this.
PS: there is no need to deserialise.
docx4j is a library for creating and manipulating .docx,pptx and excel files.
If you do not feel like using docx4java or it does not fit your needs you can try these
Apache Poi
Open Office API
The easiest is to export to a comma-separated values which you can open in Excel.
You can use the data-exporter library.
I am working for a log analyzer system,which read the log of tomcat and display them by a chart/table in web page.
(I know there are some existed log analyzer system,I am recreating the wheel. But this is my job,my boss want it.)
Our tomcat log are saved by day. For example:
2011-01-01.txt
2011-01-02.txt
......
The following is my manner for export logs to db and read them:
1 The DB structure
I have three tables:
1)log_current:save the logs generated today.
2)log_past:save the logs generated before today.
The above two tables own the SAME schema.
+-------+-----------+----------+----------+--------+-----+----------+----------+--------+---------------------+---------+----------+-------+
| Id | hostip | username | datasend | method | uri | queryStr | protocol | status | time | browser | platform | refer |
+-------+-----------+----------+----------+--------+-----+----------+----------+--------+---------------------+---------+----------+-------+
| 44359 | 127.0.0.1 | - | 0 | GET | / | | HTTP/1.1 | 404 | 2011-02-17 08:08:25 | Unknown | Unknown | - |
+-------+-----------+----------+----------+--------+-----+----------+----------+--------+---------------------+---------+----------+-------+
3)log_record:save the information of log_past,it record the days whose logs have been exported to the log_past table.
+-----+------------+
| Id | savedDate |
+-----+------------+
| 127 | 2011-02-15 |
| 128 | 2011-02-14 |
..................
+-----+------------+
The table shows log of 2011-02-15 have been exported.
2 Export(to db)
I have two schedule work.
1) day work.
at 00:05:00,check the tomcat log directory(/tomcat/logs) to find all the latest 30 days log files(of course it include logs of yesterday.
check the log_record table to see if logs of one day is exported,for example,2011-02-16 is not find in the log_record,so I will read the 2011-02-16.txt,and export them to log_past.
After export log of yesterday,I start the file monitor for today's log(2011-02-17.txt) not matter it exist or not.
2)the file monitor
Once the monitor is started,it will read the file hour by hour. Each log it read will be saved in the log_current table.
3 tomcat server restart.
Sometimes we have to restart the tomcat,so once the tomcat is started,I will delete all logs of log_current,then do the day work.
4 My problem
1) two table (log_current and log_past).
Because if I save the today's log to log_past,I can not make sure all the log file(xxxx-xx-xx.txt) are exported to db. Since I will do a check in 00:05:00 every day which make sure that logs before today must be exported.
But this make it difficult to query logs accros yestersay and today.
For example,query from 2011-02-14 00:00:00 to 2011-02-15 00:00:00,these log must be at log_past.
But how about from 2011-02-14 00:00:00 to 2011-02-17 08:00:00 ?(suppose it is 2011-02-17 09:00:00 now).
It is complex to query across tables.
Also,I always think my desing for the table and work manner(schedule work of export/read) are not perfect,so anyone can give a good suggestion?
I just need to export and read log and can do a almost real-time analysis where real-time means I have to make logs of current day visiable by chart/table and etc.
First of all, IMO you don't need 2 different tables log_current and log_past. You can insert all the rows in the same table, say logs and retrieve using
select * from logs where id = (select id from log_record where savedDate = 'YOUR_DATE')
This will give you all the logs of the particular day.
Now, once you are able to remove the current and past distinction between tables using above way, I think the problem you are asking here would be solved. :)