public class PortletRequestDataBinder extends WebDataBinder
DataBinder
to perform data binding
from portlet 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 Portlet Controller implementation. Simply instantiate
a PortletRequestDataBinder for each binding process, and invoke bind
with the current PortletRequest as argument:
MyBean myBean = new MyBean(); // apply binder to custom target object PortletRequestDataBinder binder = new PortletRequestDataBinder(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(); ...
bind(javax.portlet.PortletRequest)
,
DataBinder.registerCustomEditor(java.lang.Class<?>, java.beans.PropertyEditor)
,
DataBinder.setAllowedFields(java.lang.String...)
,
DataBinder.setRequiredFields(java.lang.String...)
,
WebDataBinder.setFieldMarkerPrefix(java.lang.String)
DEFAULT_FIELD_DEFAULT_PREFIX, DEFAULT_FIELD_MARKER_PREFIX
DEFAULT_AUTO_GROW_COLLECTION_LIMIT, DEFAULT_OBJECT_NAME, logger
Constructor and Description |
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PortletRequestDataBinder(Object target)
Create a new PortletRequestDataBinder instance, with default object name.
|
PortletRequestDataBinder(Object target,
String objectName)
Create a new PortletRequestDataBinder instance.
|
Modifier and Type | Method and Description |
---|---|
void |
bind(PortletRequest request)
Bind the parameters of the given request to this binder's target,
also binding multipart files in case of a multipart request.
|
void |
closeNoCatch()
Treats errors as fatal.
|
bindMultipart, checkFieldDefaults, checkFieldMarkers, doBind, getEmptyValue, getFieldDefaultPrefix, getFieldMarkerPrefix, isBindEmptyMultipartFiles, setBindEmptyMultipartFiles, setFieldDefaultPrefix, setFieldMarkerPrefix
addCustomFormatter, addCustomFormatter, addCustomFormatter, addValidators, applyPropertyValues, bind, checkAllowedFields, checkRequiredFields, close, convertIfNecessary, convertIfNecessary, convertIfNecessary, createBeanPropertyBindingResult, createDirectFieldBindingResult, findCustomEditor, getAllowedFields, getAutoGrowCollectionLimit, getBindingErrorProcessor, getBindingResult, getConversionService, getDisallowedFields, getInternalBindingResult, getObjectName, getPropertyAccessor, getPropertyEditorRegistry, getRequiredFields, getSimpleTypeConverter, getTarget, getTypeConverter, getValidator, getValidators, initBeanPropertyAccess, initDirectFieldAccess, isAllowed, isAutoGrowNestedPaths, isIgnoreInvalidFields, isIgnoreUnknownFields, registerCustomEditor, registerCustomEditor, replaceValidators, setAllowedFields, setAutoGrowCollectionLimit, setAutoGrowNestedPaths, setBindingErrorProcessor, setConversionService, setDisallowedFields, setExtractOldValueForEditor, setIgnoreInvalidFields, setIgnoreUnknownFields, setMessageCodesResolver, setRequiredFields, setValidator, validate, validate
public PortletRequestDataBinder(Object target)
target
- the target object to bind onto (or null
if the binder is just used to convert a plain parameter value)DataBinder.DEFAULT_OBJECT_NAME
public PortletRequestDataBinder(Object target, String objectName)
target
- the target object to bind onto (or null
if the binder is just used to convert a plain parameter value)objectName
- the name of the target objectpublic void bind(PortletRequest 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.
request
- request with parameters to bind (can be multipart)MultipartActionRequest
,
MultipartFile
,
DataBinder.bind(org.springframework.beans.PropertyValues)
public void closeNoCatch() throws PortletRequestBindingException
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.
PortletRequestBindingException
- subclass of PortletException on any binding problem