Validating Username and Password in Java

Writer QR Code JIS X 0510 in Java Validating Username and Password
Validating Username and Password
QR Code 2d Barcode decoder in java
Using Barcode Control SDK for Java Control to generate, create, read, scan barcode image in Java applications.
The discussion of declarative basic authentication in the preceding section indicates that that particular approach automatically looks up the username and password in configuration files built into the Web server. That was getting a little ahead of things, because in the first three approaches (using a simple form, using a form with j_username, and programmatic basic authentication) that we discuss in this chapter, we don t specify how to actually authenticate the user. In each of those cases, we leave the situation as follows:
Java denso qr bar code creationon java
using java toprint qr code for asp.net web,windows application
<!--- would validate username/password here --->
decode qr codes on java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
What do you actually do for that step It depends on your application, as well as which of the other three styles of login prompt you chose to use. So focus first on the bigger picture question: Where do you look up usernames and passwords anyway
Bar Code printing with java
using java toaccess bar code with asp.net web,windows application
40 Integrating Security
Bar Code barcode library in java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
Authenticating against a database
For many developers, the simplest solution is to perform authentication (that is, looking up a given username and password) against a database table either one that already exists in the environment or one that they create for the purpose of holding username and password values for legitimate users. Still other developers may already have a database containing information about their users (members, customers, employees) and can add authentication support simply by adding username, password, and perhaps other fields to an existing table.
QR Code 2d Barcode barcode library in .net
using barcode generation for asp.net web service control to generate, create denso qr bar code image in asp.net web service applications.
Note There is a database installed with CFMX called CompanyInfo, with a corresponding LoginInfo table. If you d like to use that as an example and need to create the datasource, the database is installed in [cfusion-home]\db\company.mdb.
Denso QR Bar Code implementation in .net
generate, create qr none for .net projects
Assume that, for now, you want to authenticate against the table called LoginInfo in the CompanyInfo datasource. If we use the forms we created in the section Prompting by using a simple form above, then we will have form fields called form.username and form.password presented after the user submits the form. (If you were following along in the section Using special form variables: j_username and j_password or have used the approach offered in Using programmatic basic authentication, then instead use the cflogin.name and cflogin.password fields). To perform authentication against this database, you can use a query such as the following:
Control qr-code size with visual basic.net
qr code 2d barcode size in visual basic
<cfquery datasource= CompanyInfo name= GetLogin > SELECT UserID FROM LoginInfo WHERE UserID= #form.username# AND Password= #form.password# </cfquery>
GTIN - 13 integrating on java
use java ean13 development todeploy ean13 in java
If you were to run the test.cfm we had developed in CFLOGIN in action earlier in the chapter, you would now be expected to provide values that are found in this sample CompanyInfo database. One of the records includes a value of username with bobz who has a password of ads10. But how do we in fact test that the user has given us those expected values, or that whatever values they give us cause us to find a corresponding record in the database The next step is to decide whether the values presented are a valid username/password pair. We continue with that in Proceeding based on success or failure of authentication, after we take a moment in the next section to address another form of authentication that some may prefer.
Java gs1 128 developmentwith java
using java toproduce ucc.ean - 128 for asp.net web,windows application
Authenticating against an OS/LDAP repository
Render barcode data matrix with java
generate, create data matrix 2d barcode none in java projects
Rather than authenticate against a database table, you may work in an environment with an available repository for usernames and passwords that is used to control access to all resources on the server. Rather than create a new table of usernames and passwords in any database, you may prefer (or be expected) to use that. Examples include an LDAP (lightweight directory access protocol) server or a Windows NT domain. For those who need to use such a repository for authentication, an article addressing several approaches to doing that is available from Macromedia; called Security Best Practices: Authenticating And Authorizing Against NT Domains with ColdFusion MX, it s available at www.macromedia.com/desdev/mx/coldfusion/articles/ntdomain.html. Despite the title of the article, it also discusses authenticating against an LDAP server.
EAN8 barcode library on java
generate, create gtin - 8 none for java projects
Bar Code integrated with word
using office word toembed barcode for asp.net web,windows application
Control barcode pdf417 size in c#
to make barcode pdf417 and pdf-417 2d barcode data, size, image with visual c# barcode sdk
Bar Code generator with .net
use windows forms barcode generation todraw barcode in .net
Compose bar code with .net
using barcode generation for sql server 2005 reporting services control to generate, create bar code image in sql server 2005 reporting services applications.