org.lightningj.paywall.spring.controller

Class GenerateQRCodeController

java.lang.Object

org.lightningj.paywall.spring.controller.GenerateQRCodeController

@Controller
public class GenerateQRCodeController
extends java.lang.Object

Controller to generate a QR Code and return a PNG Image. Has the following parameters:

• d: the string to generate qr code for (Required).
• w: custom width of generated image (Optional).
• h: custom height of generated image (Optional).

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.util.logging.Logger	log
static java.lang.String	PARAMETER_DATA
static java.lang.String	PARAMETER_HEIGHT
static java.lang.String	PARAMETER_WIDTH
static java.lang.String	PNG_CONTENT_TYPE

Constructor Summary

Constructors

Constructor and Description
GenerateQRCodeController()

Method Summary

Modifier and Type	Method and Description
void	generateQRCode(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Main controller action generating a QR Code image for a given qr code
org.springframework.http.ResponseEntity<java.lang.Object>	handleException(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.lang.Exception e) Exception handler for this controller.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

log

protected static java.util.logging.Logger log

PARAMETER_DATA

public static final java.lang.String PARAMETER_DATA

See Also:

Constant Field Values

PARAMETER_WIDTH

public static final java.lang.String PARAMETER_WIDTH

See Also:

Constant Field Values

PARAMETER_HEIGHT

public static final java.lang.String PARAMETER_HEIGHT

See Also:

Constant Field Values

PNG_CONTENT_TYPE

public static final java.lang.String PNG_CONTENT_TYPE

See Also:

Constant Field Values

Constructor Detail

GenerateQRCodeController

public GenerateQRCodeController()

Method Detail

generateQRCode

@GetMapping(value="${paywall.qrcode.url:/paywall/genqrcode}")
public void generateQRCode(javax.servlet.http.HttpServletRequest request,
                                                                                         javax.servlet.http.HttpServletResponse response)
                                                                                  throws java.lang.Exception

Main controller action generating a QR Code image for a given qr code

Parameters:

request - the related http request.

response - the related http response.

Throws:

java.lang.Exception - if problems occurred, handled by handleException method.

handleException

@ExceptionHandler(value=java.lang.Exception.class)
public org.springframework.http.ResponseEntity<java.lang.Object> handleException(javax.servlet.http.HttpServletRequest request,
                                                                                                                                    javax.servlet.http.HttpServletResponse response,
                                                                                                                                    java.lang.Exception e)

Exception handler for this controller.

Parameters:

request - the related http request.

response - the related http response.

e - the related exception

Returns:

generated response object.