MySQL: Result characters are all spaces!!!?
The field names and contents in Table are all English. Can connect to DB, the result row number is right also, but when using getString("name"), the following exception occur:
SQLException: Column 'name' not found.
getString(1) can work, but the result string is comprised of spaces, exactly the same length!
Why?
my code segment:
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql:///menagerie");
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("select * from pet");
while(rs.next()) {
System.out.println("Name = " + rs.getString("name") + "<br>");
Thanks for reply!
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GMcPlease read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software — potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions — they’re easy to carry out and won’t change anything on your Mac.
These steps are to be taken while booted in “normal” mode, not in safe mode. If you’re now running in safe mode, reboot as usual before continuing.
Below are instructions to enter some UNIX shell commands. The commands are harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of the procedure suggested here, search this site for other discussions in which it’s been followed without any report of ill effects.
Some of the commands will line-wrap or scroll in your browser, but each one is really just a single line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, and you can then copy it. The headings “Step 1” and so on are not part of the commands.
Note: If you have more than one user account, Step 2 must be taken as an administrator. Ordinarily that would be the user created automatically when you booted the system for the first time. The other steps should be taken as the user who has the problem, if different. Most personal Macs have only one user, and in that case this paragraph doesn’t apply.
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
When you launch Terminal, a text window will open with a line already in it, ending either in a dollar sign (“$”) or a percent sign (“%”). If you get the percent sign, enter “sh” and press return. You should then get a new line ending in a dollar sign.
Step 1
Triple-click the line of text below to select it:
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Copy the selected text to the Clipboard by pressing the key combination command-C. Then click anywhere in the Terminal window and paste (command-V). A TextEdit window will open with the output of the command. Post the contents of that window, if any — the text, please, not a screenshot. You can then close the TextEdit window. The title of the window doesn't matter, and you don't need to post that. No typing is involved in this step.
Step 2
Repeat with this line:
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Step 3
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Step 5
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Why are all the events in the XML SAX parser not activated?
Hi everyone,
I have written a mini server that parses XML files into SQL queries.
Below is a segment of my code;
try {
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}Where the constructor EventXMLParser constructs the following:
public EventXMLParser(File path, Connection connection) {
super();
try {
this.XMLpath = path;
this.db_connection = connection;
this.xr = XMLReaderFactory.createXMLReader();
this.XMLSAXhandler = new DefaultHandler(); //create a new own handler
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this.xr.setErrorHandler(XMLSAXhandler);
//System.out.println("DEBUG: db_connection is " + db_connection.toString());
catch (Exception e) {
System.out.println("Constructor Error!");
e.printStackTrace();
}Below are all my helper methods within EventXMLParser.java
public void XMLtoDB(String XMLpath) throws Exception {
try {
//Input
System.out.println("XMLpath is : " + XMLpath);
/*FileReader r = new FileReader(XMLpath); debug
InputSource in = new InputSource(r);
xr.parse(in);
xr.parse(XMLpath);
/* Note that while parsing, the end of each event, </event>
* will trigger sendSQL to execute the query on the database
catch (Exception e) {
throw new Exception("Error with XMLtoDB!! Exception: " + e);
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//JDBC part
try {
System.err.println("DEBUG sendSQL");
Statement sql_statement = sql_connection.createStatement();
ResultSet resultSet = sql_statement.executeQuery( event.toSQL() );
catch (SQLException e) {
e.printStackTrace();
/* Parsing XML
* From here onwards it's all designed for the SAX Parsing with different event calling methods
public void startDocument() {
System.err.println("Start Document");
public void endDocument() {
System.err.println("End Document");
public void startElement(String uri, String name, String qName, Attributes atts) {
CurrentElement= name;
System.out.println("This is parsing");
public void characters(char ch[], int start, int length) {
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
StringBuffer sb = new StringBuffer();
for (int i = start; i < start + length; i++)
sb.append(ch);
String content = sb.toString();
if (CurrentElement.equals("eid"))
temp.setEventID( (Integer.valueOf(content)).intValue() ) ;
else if (CurrentElement.equals("sd"))
temp.setShort_description(content);
else if (CurrentElement.equals("ld"))
temp.setLong_description(content);
else if ( (CurrentElement.equals("dt")))
temp.setDate_Time( formatter.parse(content, new ParsePosition(0)) );
else if (CurrentElement.equals("repeat"))
temp.setRepeat_pattern( (Integer.valueOf(content)).intValue() );
else if (CurrentElement.equals("valid"))
temp.setValid_period(content);
else if (CurrentElement.equals("status")) {
temp.setStatus( (Integer.valueOf(content)).intValue() );
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Where event is a public class Event {
//fields
private int userID = 1; // = 1 only applies for testing
private int eventID;
private String short_description;
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private int status; //1 for new, 0 for modification and -1 for delete
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//Constructors
//every event requires the following: userID eventID and short_Description
public Event(int uID, int eID, String shortDescrp) {
setUserID(uID);
setEventID(eID);
setShort_description(shortDescrp);
public Event(int uid, int eid, String sd,
String ld, Date d_t, int r_p, String v_p, int s) {
setUserID(uid);
setEventID(eid);
setShort_description(sd);
setLong_description(ld);
setDate_Time(d_t);
setRepeat_pattern(r_p);
setValid_period(v_p);
setStatus(s);
//set
public void setUserID (int x) { this.userID = x ;}
public void setEventID (int x) { this.eventID = x ;}
public void setShort_description (String x) { this.short_description = x ;}
public void setLong_description (String x) { this.long_description = x ;}
public void setDate_Time(Date x) { this.date_time = x ;}
public void setRepeat_pattern (int x) { this.repeat_pattern = x ;}
public void setValid_period (String x) { this.valid_period = x ;}
public void setStatus (int x) { this.status = x; }
//get
public int getUserID() { return this.userID;}
public int getEventID() { return this.eventID;}
public String getShort_description() { return this.short_description;}
public String getLong_description() { return this.long_description;}
public Date getDate_Time() { return this.date_time;}
public int getRepeat_pattern() { return this.repeat_pattern;}
public String getValid_period() { return this.valid_period;}
public int getStatus() { return this.status; }
//Event to SQL statements;
public String toSQL() {
StringBuffer sb = new StringBuffer();
///if ( status == 1) {
sb.append( "INSERT INTO events SET" );
sb.append( " userID = " + userID + ", ");
sb.append( "eventID = " + eventID + ", " );
sb.append( "short_description = " + "\'" + short_description + "\'" + ", "); //String
sb.append( "long_description = " + "\'" + long_description + "\'" + ", "); //String
sb.append( "date_time = " + "\'" + formatter.format(date_time) + "\'" + ", ");
sb.append( "repeat_pattern = " + repeat_pattern + ", " );
sb.append( "valid_period = " + "\'" + valid_period + "\'" ); //String
sb.append( ";");
//} else if ( status == 2) {
System.err.println(sb.toString());
return sb.toString();
} My question is: I have taken my SQL query generated by toSQL() method in events and it worked.
Here is the funny thing:
Everything is correct syntax wise: No complaints what soever
The mysql part works: Tested separately.
So I tend to think that the problem lies within the SAX parser. I have written SAX2 parsers on this machine before and they have worked too. I tried inserting println statements all over startElement endElement etc etc only to find out that the SAX parser did not call any of the methods that I overided!! Why is that so?
Can you guys spot where my SAX parser fails?I see.
I try to correct this problem by removing super();
so right now my code looks like this:
static Event temp = new Event(0, 0, "null", "null", new Date(), 0, "null", 0);
static String CurrentElement = null;
static File XMLpath;
static Connection db_connection;
static XMLReader xr;
static DefaultHandler XMLSAXhandler;
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public EventXMLParser(File path, Connection connection) {
try {
this.XMLpath = path;
this.db_connection = connection;
this.xr = XMLReaderFactory.createXMLReader();
this.XMLSAXhandler = new DefaultHandler(); //create a new own handler
this.xr.setContentHandler(XMLSAXhandler);
this.xr.setErrorHandler(XMLSAXhandler);
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catch (Exception e) {
System.out.println("Constructor Error!");
e.printStackTrace();
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Why are all my paths disappearing when I save some files as jpegs?
I have 2 identical PSD files. Both have 10 different paths that are identical for each file. When I flatten and save one file as a jpeg the paths stay in the file just fine as is usually the case. When I open the jpeg the paths are still there as they should be.
When I save the other file as a jpeg all the paths are there after I've saved the file and BEFORE I've closed the file. After closing and reopening the file the paths are all gone. If I save the same file as a tiff the paths all stay as usual.
I've never seen this happen in almost 20 years of using Photoshop.
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If I were, then the other image wouldn't be keeping any of its paths either.
I am using "Jpeg" in the Save As dialogue box.
If I edit the jpeg that lost its paths after opening it and hit "Save" it gives me the compression options dialogue box. Other jpegs just "save" when I hit save, I've never had a jpeg give me that dialogue box before when hitting just "Save".
If, after opening the image that lost its paths, I paste a path into that image and hit "Save"(using one of the same original paths from the same original psd file), it gives me the compression dialogue box. If I complete the "Save" and reopen the image, voila, the path I pasted into it is still there, and, if I edit the image and hit "Save" it becomes normal again and saves without showing the compression options dialogue box.
Photoshop CS6 version 13.0.5
iMAC 27"
12 gigs of RAM 5 gigs free
800 gigs of free space on the system drive
Snow Leopard 10.6.8
Disk Permissions Repaired
There really is no reason for this to happen. There are no differences in the images except for the content of the image and the file names.
I have tried new file names and still the same result.
I have tried working from the Desktop and still the same result.
This is a serious bug. -
Arabic characters are no longer displaying properly in NB 6.7
Hello all -
Up until NB 6.5.1, my GUI displayed Arabic characters properly as typed. As I shifted to NB 6.7 Beta today, all those Arabic characters are shown as funny binary-looking characters! But, this only occurs when I am running from within the NB space. When I run the application by clicking the jar files, the characters print OK.
Questions:
- Is this happening because it is a beta version may be?
- Is there a way or a place where I have to set some properties to display the Unicode characters correctly?
For example, I thought all I had to do was right-click the project --> Properties --> Source --> Encoding: UTF-8
Thank you for any help.
PS: I am posting this problem in the Internationalization forums.PS: I am posting this problem in the Internationalization forums.A more appropriate place might be a NetBeans forum.
db
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