所有已知子接口:
BindingResult
所有已知实现类:
AbstractBindingResult, AbstractErrors, AbstractPropertyBindingResult, BeanPropertyBindingResult, BindException, DirectFieldBindingResult, EscapedErrors, MapBindingResult
```
public interface Errors
```
Stores and exposes information about data-binding and validation errors for a specific object.
Field names can be properties of the target object (e.g. "name" when binding to a customer object), or nested fields in case of subobjects (e.g. "address.street"). Supports subtree navigation via setNestedPath(String): for example, an AddressValidator validates "address", not being aware that this is a subobject of customer.
Note: Errors objects are single-threaded.
作者:
Rod Johnson, Juergen Hoeller
另请参阅:
setNestedPath(java.lang.String), BindException, DataBinder, ValidationUtils

字段概要
字段
修饰符和类型字段说明
static String NESTED_PATH_SEPARATOR
The separator between path elements in a nested path, for example in "customer.name" or "customer.address.street".

方法概要

所有方法实例方法抽象方法
修饰符和类型	方法	说明
`void`	`addAllErrors(Errors errors)`	Add all errors from the given `Errors` instance to this `Errors` instance.
`List<ObjectError>`	`getAllErrors()`	Get all errors, both global and field ones.
`int`	`getErrorCount()`	Return the total number of errors.
`FieldError`	`getFieldError()`	Get the first error associated with a field, if any.
`FieldError`	`getFieldError(String field)`	Get the first error associated with the given field, if any.
`int`	`getFieldErrorCount()`	Return the number of errors associated with a field.
`int`	`getFieldErrorCount(String field)`	Return the number of errors associated with the given field.
`List<FieldError>`	`getFieldErrors()`	Get all errors associated with a field.
`List<FieldError>`	`getFieldErrors(String field)`	Get all errors associated with the given field.
`Class<?>`	`getFieldType(String field)`	Return the type of a given field.
`Object`	`getFieldValue(String field)`	Return the current value of the given field, either the current bean property value or a rejected update from the last binding.
`ObjectError`	`getGlobalError()`	Get the first global error, if any.
`int`	`getGlobalErrorCount()`	Return the number of global errors.
`List<ObjectError>`	`getGlobalErrors()`	Get all global errors.
`String`	`getNestedPath()`	Return the current nested path of this `Errors` object.
`String`	`getObjectName()`	Return the name of the bound root object.
`boolean`	`hasErrors()`	Return if there were any errors.
`boolean`	`hasFieldErrors()`	Are there any field errors?
`boolean`	`hasFieldErrors(String field)`	Are there any errors associated with the given field?
`boolean`	`hasGlobalErrors()`	Are there any global errors?
`void`	`popNestedPath()`	Pop the former nested path from the nested path stack.
`void`	`pushNestedPath(String subPath)`	Push the given sub path onto the nested path stack.
`void`	`reject(String errorCode)`	Register a global error for the entire target object, using the given error description.
`void`	`reject(String errorCode, Object[] errorArgs, String defaultMessage)`	Register a global error for the entire target object, using the given error description.
`void`	`reject(String errorCode, String defaultMessage)`	Register a global error for the entire target object, using the given error description.
`void`	`rejectValue(String field, String errorCode)`	Register a field error for the specified field of the current object (respecting the current nested path, if any), using the given error description.
`void`	`rejectValue(String field, String errorCode, Object[] errorArgs, String defaultMessage)`	Register a field error for the specified field of the current object (respecting the current nested path, if any), using the given error description.
`void`	`rejectValue(String field, String errorCode, String defaultMessage)`	Register a field error for the specified field of the current object (respecting the current nested path, if any), using the given error description.
`void`	`setNestedPath(String nestedPath)`	Allow context to be changed so that standard validators can validate subtrees.

- 字段详细资料
  - NESTED_PATH_SEPARATOR
```
static final String NESTED_PATH_SEPARATOR
```
    The separator between path elements in a nested path, for example in "customer.name" or "customer.address.street".
    "." = same as the nested property separator in the beans package.
    另请参阅:
    常量字段值
- 方法详细资料
  - getObjectName
```
String getObjectName()
```
    Return the name of the bound root object.
  - setNestedPath
```
void setNestedPath(String nestedPath)
```
    Allow context to be changed so that standard validators can validate subtrees. Reject calls prepend the given path to the field names.
    For example, an address validator could validate the subobject "address" of a customer object.
    参数:
    nestedPath - nested path within this object, e.g. "address" (defaults to "", null is also acceptable). Can end with a dot: both "address" and "address." are valid.
  - getNestedPath
```
String getNestedPath()
```
    Return the current nested path of this Errors object.
    Returns a nested path with a dot, i.e. "address.", for easy building of concatenated paths. Default is an empty String.
  - pushNestedPath
```
void pushNestedPath(String subPath)
```
    Push the given sub path onto the nested path stack.
    A popNestedPath() call will reset the original nested path before the corresponding pushNestedPath(String) call.
    Using the nested path stack allows to set temporary nested paths for subobjects without having to worry about a temporary path holder.
    For example: current path "spouse.", pushNestedPath("child") -> result path "spouse.child."; popNestedPath() -> "spouse." again.
    参数:
    subPath - the sub path to push onto the nested path stack
    另请参阅:
    popNestedPath()
  - popNestedPath
```
void popNestedPath()
            throws IllegalStateException
```
    Pop the former nested path from the nested path stack.
    抛出:
    IllegalStateException - if there is no former nested path on the stack
    另请参阅:
    pushNestedPath(java.lang.String)
  - reject
```
void reject(String errorCode)
```
    Register a global error for the entire target object, using the given error description.
    参数:
    errorCode - error code, interpretable as a message key
  - reject
```
void reject(String errorCode,
            String defaultMessage)
```
    Register a global error for the entire target object, using the given error description.
    参数:
    errorCode - error code, interpretable as a message key
    defaultMessage - fallback default message
  - reject
```
void reject(String errorCode,
            Object[] errorArgs,
            String defaultMessage)
```
    Register a global error for the entire target object, using the given error description.
    参数:
    errorCode - error code, interpretable as a message key
    errorArgs - error arguments, for argument binding via MessageFormat (can be null)
    defaultMessage - fallback default message
  - rejectValue
```
void rejectValue(String field,
                 String errorCode)
```
    Register a field error for the specified field of the current object (respecting the current nested path, if any), using the given error description.
    The field name may be null or empty String to indicate the current object itself rather than a field of it. This may result in a corresponding field error within the nested object graph or a global error if the current object is the top object.
    参数:
    field - the field name (may be null or empty String)
    errorCode - error code, interpretable as a message key
    另请参阅:
    getNestedPath()
  - rejectValue
```
void rejectValue(String field,
                 String errorCode,
                 String defaultMessage)
```
    Register a field error for the specified field of the current object (respecting the current nested path, if any), using the given error description.
    The field name may be null or empty String to indicate the current object itself rather than a field of it. This may result in a corresponding field error within the nested object graph or a global error if the current object is the top object.
    参数:
    field - the field name (may be null or empty String)
    errorCode - error code, interpretable as a message key
    defaultMessage - fallback default message
    另请参阅:
    getNestedPath()
  - rejectValue
```
void rejectValue(String field,
                 String errorCode,
                 Object[] errorArgs,
                 String defaultMessage)
```
    Register a field error for the specified field of the current object (respecting the current nested path, if any), using the given error description.
    The field name may be null or empty String to indicate the current object itself rather than a field of it. This may result in a corresponding field error within the nested object graph or a global error if the current object is the top object.
    参数:
    field - the field name (may be null or empty String)
    errorCode - error code, interpretable as a message key
    errorArgs - error arguments, for argument binding via MessageFormat (can be null)
    defaultMessage - fallback default message
    另请参阅:
    getNestedPath()
  - addAllErrors
```
void addAllErrors(Errors errors)
```
    Add all errors from the given Errors instance to this Errors instance.
    This is a convenience method to avoid repeated reject(..) calls for merging an Errors instance into another Errors instance.
    Note that the passed-in Errors instance is supposed to refer to the same target object, or at least contain compatible errors that apply to the target object of this Errors instance.
    参数:
    errors - the Errors instance to merge in
  - hasErrors
```
boolean hasErrors()
```
    Return if there were any errors.
  - getErrorCount
```
int getErrorCount()
```
    Return the total number of errors.
  - getAllErrors
```
List<ObjectError> getAllErrors()
```
    Get all errors, both global and field ones.
    返回:
    List of ObjectError instances
  - hasGlobalErrors
```
boolean hasGlobalErrors()
```
    Are there any global errors?
    返回:
    true if there are any global errors
    另请参阅:
    hasFieldErrors()
  - getGlobalErrorCount
```
int getGlobalErrorCount()
```
    Return the number of global errors.
    返回:
    the number of global errors
    另请参阅:
    getFieldErrorCount()
  - getGlobalErrors
```
List<ObjectError> getGlobalErrors()
```
    Get all global errors.
    返回:
    List of ObjectError instances
  - getGlobalError
```
ObjectError getGlobalError()
```
    Get the first global error, if any.
    返回:
    the global error, or null
  - hasFieldErrors
```
boolean hasFieldErrors()
```
    Are there any field errors?
    返回:
    true if there are any errors associated with a field
    另请参阅:
    hasGlobalErrors()
  - getFieldErrorCount
```
int getFieldErrorCount()
```
    Return the number of errors associated with a field.
    返回:
    the number of errors associated with a field
    另请参阅:
    getGlobalErrorCount()
  - getFieldErrors
```
List<FieldError> getFieldErrors()
```
    Get all errors associated with a field.
    返回:
    a List of FieldError instances
  - getFieldError
```
FieldError getFieldError()
```
    Get the first error associated with a field, if any.
    返回:
    the field-specific error, or null
  - hasFieldErrors
```
boolean hasFieldErrors(String field)
```
    Are there any errors associated with the given field?
    参数:
    field - the field name
    返回:
    true if there were any errors associated with the given field
  - getFieldErrorCount
```
int getFieldErrorCount(String field)
```
    Return the number of errors associated with the given field.
    参数:
    field - the field name
    返回:
    the number of errors associated with the given field
  - getFieldErrors
```
List<FieldError> getFieldErrors(String field)
```
    Get all errors associated with the given field.
    Implementations should support not only full field names like "name" but also pattern matches like "na*" or "address.*".
    参数:
    field - the field name
    返回:
    a List of FieldError instances
  - getFieldError
```
FieldError getFieldError(String field)
```
    Get the first error associated with the given field, if any.
    参数:
    field - the field name
    返回:
    the field-specific error, or null
  - getFieldValue
```
Object getFieldValue(String field)
```
    Return the current value of the given field, either the current bean property value or a rejected update from the last binding.
    Allows for convenient access to user-specified field values, even if there were type mismatches.
    参数:
    field - the field name
    返回:
    the current value of the given field
  - getFieldType
```
Class<?> getFieldType(String field)
```
    Return the type of a given field.
    Implementations should be able to determine the type even when the field value is null, for example from some associated descriptor.
    参数:
    field - the field name
    返回:
    the type of the field, or null if not determinable

接口 Errors

字段概要

方法概要

字段详细资料

NESTED_PATH_SEPARATOR

方法详细资料

getObjectName

setNestedPath

getNestedPath

pushNestedPath

popNestedPath

reject

reject

reject

rejectValue

rejectValue

rejectValue

addAllErrors

hasErrors

getErrorCount

getAllErrors

hasGlobalErrors

getGlobalErrorCount

getGlobalErrors

getGlobalError

hasFieldErrors

getFieldErrorCount

getFieldErrors

getFieldError

hasFieldErrors

getFieldErrorCount

getFieldErrors

getFieldError

getFieldValue

getFieldType