java.lang.Object
- org.springframework.web.servlet.ModelAndView

```
public class ModelAndView
extends Object
```
Holder for both Model and View in the web MVC framework. Note that these are entirely distinct. This class merely holds both to make it possible for a controller to return both model and view in a single return value.
Represents a model and view returned by a handler, to be resolved by a DispatcherServlet. The view can take the form of a String view name which will need to be resolved by a ViewResolver object; alternatively a View object can be specified directly. The model is a Map, allowing the use of multiple objects keyed by name.
作者:
Rod Johnson, Juergen Hoeller, Rob Harrop, Rossen Stoyanchev
另请参阅:
DispatcherServlet, ViewResolver, HandlerAdapter.handle(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.Object), Controller.handleRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)

构造器概要

构造器
构造器	说明
`ModelAndView()`	Default constructor for bean-style usage: populating bean properties instead of passing in constructor arguments.
`ModelAndView(String viewName)`	Convenient constructor when there is no model data to expose.
`ModelAndView(String viewName, String modelName, Object modelObject)`	Convenient constructor to take a single model object.
`ModelAndView(String viewName, Map<String,?> model)`	Create a new ModelAndView given a view name and a model.
`ModelAndView(String viewName, Map<String,?> model, HttpStatus status)`	Create a new ModelAndView given a view name, model, and HTTP status.
`ModelAndView(String viewName, HttpStatus status)`	Create a new ModelAndView given a view name and HTTP status.
`ModelAndView(View view)`	Convenient constructor when there is no model data to expose.
`ModelAndView(View view, String modelName, Object modelObject)`	Convenient constructor to take a single model object.
`ModelAndView(View view, Map<String,?> model)`	Create a new ModelAndView given a View object and a model.

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`ModelAndView`	`addAllObjects(Map<String,?> modelMap)`	Add all attributes contained in the provided Map to the model.
`ModelAndView`	`addObject(Object attributeValue)`	Add an attribute to the model using parameter name generation.
`ModelAndView`	`addObject(String attributeName, Object attributeValue)`	Add an attribute to the model.
`void`	`clear()`	Clear the state of this ModelAndView object.
`Map<String,Object>`	`getModel()`	Return the model map.
`protected Map<String,Object>`	`getModelInternal()`	Return the model map.
`ModelMap`	`getModelMap()`	Return the underlying `ModelMap` instance (never `null`).
`HttpStatus`	`getStatus()`	Return the configured HTTP status for the response, if any.
`View`	`getView()`	Return the View object, or `null` if we are using a view name to be resolved by the DispatcherServlet via a ViewResolver.
`String`	`getViewName()`	Return the view name to be resolved by the DispatcherServlet via a ViewResolver, or `null` if we are using a View object.
`boolean`	`hasView()`	Indicate whether or not this `ModelAndView` has a view, either as a view name or as a direct `View` instance.
`boolean`	`isEmpty()`	Return whether this ModelAndView object is empty, i.e. whether it does not hold any view and does not contain a model.
`boolean`	`isReference()`	Return whether we use a view reference, i.e.
`void`	`setStatus(HttpStatus status)`	Set the HTTP status to use for the response.
`void`	`setView(View view)`	Set a View object for this ModelAndView.
`void`	`setViewName(String viewName)`	Set a view name for this ModelAndView, to be resolved by the DispatcherServlet via a ViewResolver.
`String`	`toString()`	Return diagnostic information about this model and view.
`boolean`	`wasCleared()`	Return whether this ModelAndView object is empty as a result of a call to `clear()` i.e. whether it does not hold any view and does not contain a model.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 构造器详细资料
  - ModelAndView
```
public ModelAndView()
```
    Default constructor for bean-style usage: populating bean properties instead of passing in constructor arguments.
    另请参阅:
    setView(View), setViewName(String)
  - ModelAndView
```
public ModelAndView(String viewName)
```
    Convenient constructor when there is no model data to expose. Can also be used in conjunction with addObject.
    参数:
    viewName - name of the View to render, to be resolved by the DispatcherServlet's ViewResolver
    另请参阅:
    addObject(java.lang.String, java.lang.Object)
  - ModelAndView
```
public ModelAndView(View view)
```
    Convenient constructor when there is no model data to expose. Can also be used in conjunction with addObject.
    参数:
    view - the View object to render
    另请参阅:
    addObject(java.lang.String, java.lang.Object)
  - ModelAndView
```
public ModelAndView(String viewName,
                    @Nullable
                    Map<String,?> model)
```
    Create a new ModelAndView given a view name and a model.
    参数:
    viewName - name of the View to render, to be resolved by the DispatcherServlet's ViewResolver
    model - a Map of model names (Strings) to model objects (Objects). Model entries may not be null, but the model Map may be null if there is no model data.
  - ModelAndView
```
public ModelAndView(View view,
                    @Nullable
                    Map<String,?> model)
```
    Create a new ModelAndView given a View object and a model. Note: the supplied model data is copied into the internal storage of this class. You should not consider to modify the supplied Map after supplying it to this class
    参数:
    view - the View object to render
    model - a Map of model names (Strings) to model objects (Objects). Model entries may not be null, but the model Map may be null if there is no model data.
  - ModelAndView
```
public ModelAndView(String viewName,
                    HttpStatus status)
```
    Create a new ModelAndView given a view name and HTTP status.
    参数:
    viewName - name of the View to render, to be resolved by the DispatcherServlet's ViewResolver
    status - an HTTP status code to use for the response (to be set just prior to View rendering)
    从以下版本开始:
    4.3.8
  - ModelAndView
```
public ModelAndView(@Nullable
                    String viewName,
                    @Nullable
                    Map<String,?> model,
                    @Nullable
                    HttpStatus status)
```
    Create a new ModelAndView given a view name, model, and HTTP status.
    参数:
    viewName - name of the View to render, to be resolved by the DispatcherServlet's ViewResolver
    model - a Map of model names (Strings) to model objects (Objects). Model entries may not be null, but the model Map may be null if there is no model data.
    status - an HTTP status code to use for the response (to be set just prior to View rendering)
    从以下版本开始:
    4.3
  - ModelAndView
```
public ModelAndView(String viewName,
                    String modelName,
                    Object modelObject)
```
    Convenient constructor to take a single model object.
    参数:
    viewName - name of the View to render, to be resolved by the DispatcherServlet's ViewResolver
    modelName - name of the single entry in the model
    modelObject - the single model object
  - ModelAndView
```
public ModelAndView(View view,
                    String modelName,
                    Object modelObject)
```
    Convenient constructor to take a single model object.
    参数:
    view - the View object to render
    modelName - name of the single entry in the model
    modelObject - the single model object
- 方法详细资料
  - setViewName
```
public void setViewName(@Nullable
                        String viewName)
```
    Set a view name for this ModelAndView, to be resolved by the DispatcherServlet via a ViewResolver. Will override any pre-existing view name or View.
  - getViewName
```
@Nullable
public String getViewName()
```
    Return the view name to be resolved by the DispatcherServlet via a ViewResolver, or null if we are using a View object.
  - setView
```
public void setView(@Nullable
                    View view)
```
    Set a View object for this ModelAndView. Will override any pre-existing view name or View.
  - getView
```
@Nullable
public View getView()
```
    Return the View object, or null if we are using a view name to be resolved by the DispatcherServlet via a ViewResolver.
  - hasView
```
public boolean hasView()
```
    Indicate whether or not this ModelAndView has a view, either as a view name or as a direct View instance.
  - isReference
```
public boolean isReference()
```
    Return whether we use a view reference, i.e. true if the view has been specified via a name to be resolved by the DispatcherServlet via a ViewResolver.
  - getModelInternal
```
@Nullable
protected Map<String,Object> getModelInternal()
```
    Return the model map. May return null. Called by DispatcherServlet for evaluation of the model.
  - getModelMap
```
public ModelMap getModelMap()
```
    Return the underlying ModelMap instance (never null).
  - getModel
```
public Map<String,Object> getModel()
```
    Return the model map. Never returns null. To be called by application code for modifying the model.
  - setStatus
```
public void setStatus(@Nullable
                      HttpStatus status)
```
    Set the HTTP status to use for the response.
    The response status is set just prior to View rendering.
    从以下版本开始:
    4.3
  - getStatus
```
@Nullable
public HttpStatus getStatus()
```
    Return the configured HTTP status for the response, if any.
    从以下版本开始:
    4.3
  - addObject
```
public ModelAndView addObject(String attributeName,
                              @Nullable
                              Object attributeValue)
```
    Add an attribute to the model.
    参数:
    attributeName - name of the object to add to the model (never null)
    attributeValue - object to add to the model (can be null)
    另请参阅:
    ModelMap.addAttribute(String, Object), getModelMap()
  - addObject
```
public ModelAndView addObject(Object attributeValue)
```
    Add an attribute to the model using parameter name generation.
    参数:
    attributeValue - the object to add to the model (never null)
    另请参阅:
    ModelMap.addAttribute(Object), getModelMap()
  - addAllObjects
```
public ModelAndView addAllObjects(@Nullable
                                  Map<String,?> modelMap)
```
    Add all attributes contained in the provided Map to the model.
    参数:
    modelMap - a Map of attributeName -> attributeValue pairs
    另请参阅:
    ModelMap.addAllAttributes(Map), getModelMap()
  - clear
```
public void clear()
```
    Clear the state of this ModelAndView object. The object will be empty afterwards.
    Can be used to suppress rendering of a given ModelAndView object in the postHandle method of a HandlerInterceptor.
    另请参阅:
    isEmpty(), HandlerInterceptor.postHandle(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.Object, org.springframework.web.servlet.ModelAndView)
  - isEmpty
```
public boolean isEmpty()
```
    Return whether this ModelAndView object is empty, i.e. whether it does not hold any view and does not contain a model.
  - wasCleared
```
public boolean wasCleared()
```
    Return whether this ModelAndView object is empty as a result of a call to clear() i.e. whether it does not hold any view and does not contain a model.
    Returns false if any additional state was added to the instance after the call to clear().
    另请参阅:
    clear()
  - toString
```
public String toString()
```
    Return diagnostic information about this model and view.
    覆盖:
    toString 在类中 Object

类 ModelAndView

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

ModelAndView

ModelAndView

ModelAndView

ModelAndView

ModelAndView

ModelAndView

ModelAndView

ModelAndView

ModelAndView

方法详细资料

setViewName

getViewName

setView

getView

hasView

isReference

getModelInternal

getModelMap

getModel

setStatus

getStatus

addObject

addObject

addAllObjects

clear

isEmpty

wasCleared

toString