open class ServletRequestDataBinder : WebDataBinder
Special org.springframework.validation.DataBinder to perform data binding from servlet request parameters to JavaBeans, including support for multipart files.
See the DataBinder/WebDataBinder superclasses for customization options, which include specifying allowed/required fields, and registering custom property editors.
Can also be used for manual data binding in custom web controllers: for example, in a plain Controller implementation or in a MultiActionController handler method. Simply instantiate a ServletRequestDataBinder for each binding process, and invoke bind with the current ServletRequest as argument:
MyBean myBean = new MyBean(); // apply binder to custom target object ServletRequestDataBinder binder = new ServletRequestDataBinder(myBean); // register custom editors, if desired binder.registerCustomEditor(...); // trigger actual binding of request parameters binder.bind(request); // optionally evaluate binding errors Errors errors = binder.getErrors(); ...Author
Rod Johnson
Author
Juergen Hoeller
See Also
#bind(javax.servlet.ServletRequest)#registerCustomEditor#setAllowedFields#setRequiredFields#setFieldMarkerPrefix
ServletRequestDataBinder(target: Any)
Create a new ServletRequestDataBinder instance, with default object name. ServletRequestDataBinder(target: Any, objectName: String)
Create a new ServletRequestDataBinder instance. |
open fun bind(request: ServletRequest): Unit
Bind the parameters of the given request to this binder's target, also binding multipart files in case of a multipart request. This call can create field errors, representing basic binding errors like a required field (code "required"), or type mismatch between value and bean property (code "typeMismatch"). Multipart files are bound via their parameter name, just like normal HTTP parameters: i.e. "uploadedFile" to an "uploadedFile" bean property, invoking a "setUploadedFile" setter method. The type of the target property for a multipart file can be MultipartFile, byte[], or String. The latter two receive the contents of the uploaded file; all metadata like original file name, content type, etc are lost in those cases. |
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open fun closeNoCatch(): Unit
Treats errors as fatal. Use this method only if it's an error if the input isn't valid. This might be appropriate if all input is from dropdowns, for example. |
open class ExtendedServletRequestDataBinder : ServletRequestDataBinder
Subclass of ServletRequestDataBinder that adds URI template variables to the values used for data binding. |