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How to use Session attributes in Spring-mvc
... attribute to session:
@RequestMapping(method = RequestMethod.GET)
public String testMestod(HttpServletRequest request){
ShoppingCart cart = (ShoppingCart)request.getSession().setAttribute("cart",value);
return "testJsp";
}
and you can get it from controller like this :
ShoppingCart cart =...
Test if a variable is a list or tuple
...ometimes you need to behave differently if someone, for instance, passes a string. My preference there would be to explicitly check for str or unicode like so:
import types
isinstance(var, types.StringTypes)
N.B. Don't mistake types.StringType for types.StringTypes. The latter incorporates str ...
Java - get the current class name?
...
Try,
String className = this.getClass().getSimpleName();
This will work as long as you don't use it in a static method.
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Delete specified file from document directory
...rror you are getting using the modified code below
- (void)removeImage:(NSString *)filename
{
NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *fi...
How to round a number to n decimal places in Java
What I would like is a method to convert a double to a string which rounds using the half-up method - i.e. if the decimal to be rounded is 5, it always rounds up to the next number. This is the standard method of rounding most people expect in most situations.
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Why does Java have transient fields?
...ava.io.Serializable;
class NameStore implements Serializable{
private String firstName;
private transient String middleName;
private String lastName;
public NameStore (String fName, String mName, String lName){
this.firstName = fName;
this.middleName = mName;
...
Best timestamp format for CSV/Excel?
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For anyone using Ruby's strftime, the equivalent argument string is "%Y-%m-%d %H:%M:%S"
– madevident
Jan 27 '16 at 15:37
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Converting Java objects to JSON with Jackson
...
ObjectWriter ow = new ObjectMapper().writer().withDefaultPrettyPrinter();
String json = ow.writeValueAsString(object);
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Double decimal formatting in Java
...
Use String.format:
String.format("%.2f", 4.52135);
As per docs:
The locale always used is the one returned by Locale.getDefault().
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Inline SVG in CSS
... and if it doesn't work (it might complain about invalid characters in the string), you can simply use https://www.base64encode.org/.
Example to set a div background:
var mySVG = "<svg xmlns='http://www.w3.org/2000/svg' width='10' height='10'><linearGradient id='gradient'><stop ...