When Browser-Based Clients Pass Multiple Input Variables with the Same Name

webMethods and Intelligent Business Operations 10.2 | Integrating Cloud Applications | Service Development | Creating Client Code | Building a Browser-Based Client | How Input Values are Passed to the Service the Browser-Based Client Invokes | When Browser-Based Clients Pass Multiple Input Variables with the Same Name

If the URL that a browser-based client passes to Integration Server contains multiple variables that have the same name, Integration Server determines how to handle the duplicate variables based on the setting of the watt.server.http.listRequestVars server configuration parameter.

To have Integration Server:

Create list variables for only duplicate variables, set watt.server.http.listRequestVars server to asNeeded. This is the default.

With this setting, Integration Server creates an IData object that contains:

String variable that contains the first occurrence of each input variable

String list variable that contains all occurrences of each duplicated variable

For example, this request:

/invoke/sample.webPageDemo/checkYears?year=1998&year=1999&month=June

Integration Server creates the following IData object:

Key	Value	Data Type
year	1998	String
yearList	1998 1999	String list
month	June	String

Create list variables for all variables, set watt.server.http.listRequestVars server to always.

With this setting, Integration Server creates an IData object that contains:

String variable that contains the first occurrence of each input variable

String list variable that contains all occurrences of each input variable

For example, for this request:

/invoke/sample.webPageDemo/checkYears?year=1998&year=1999&month=June

Integration Server creates the following IData object:

Key	Value	Data Type
year	1998	String
yearList	1998 1999	String list
month	June	String
monthList	June	String list

Create no list variables, set watt.server.http.listRequestVars server to never.

With this setting, Integration Server ignores duplicates of the same variable and creates an IData object that contains only a String variable that contains the first occurrence of each input variable.

For example, for this request:

/invoke/sample.webPageDemo/checkYears?year=1998&year=1999&month=June

Key	Value	Data Type
year	1998	String
month	June	String

Throw a ServiceException, set watt.server.http.listRequestVars server to error.

With this setting, Integration Server throws a ServiceException if duplicates of the same variable are found.

For more information about this configuration parameter, see webMethods Integration Server Administrator’s Guide.