java.lang.Object
- org.springframework.context.support.ApplicationObjectSupport
- - org.springframework.web.context.support.WebApplicationObjectSupport
  - - org.springframework.web.servlet.view.AbstractView
    - - org.springframework.web.servlet.view.AbstractUrlBasedView
      - org.springframework.web.servlet.view.jasperreports.AbstractJasperReportsView
        org.springframework.web.servlet.view.jasperreports.JasperReportsMultiFormatView

所有已实现的接口:
Aware, BeanNameAware, InitializingBean, ApplicationContextAware, ServletContextAware, View
```
public class JasperReportsMultiFormatView
extends AbstractJasperReportsView
```
JasperReports view class that allows for the actual rendering format to be specified at runtime using a parameter contained in the model.
This view works on the concept of a format key and a mapping key. The format key is used to pass the mapping key from your Controller to Spring through as part of the model and the mapping key is used to map a logical format to an actual JasperReports view class.
For example, you might add the following code to your Controller:
```
 Map model = new HashMap();
 model.put("format", "pdf");
```
Here format is the format key and pdf is the mapping key. When rendering a report, this class looks for a model parameter under the format key, which by default is format. It then uses the value of this parameter to lookup the actual View class to use.
The default mappings for the format lookup are:
- csv - JasperReportsCsvView
- html - JasperReportsHtmlView
- pdf - JasperReportsPdfView
- xls - JasperReportsXlsView
- xlsx - JasperReportsXlsxView
The format key can be changed using the formatKey property. The applicable key-to-view-class mappings can be configured using the formatMappings property.
从以下版本开始:
1.1.5
作者:
Rob Harrop, Juergen Hoeller
另请参阅:
setFormatKey(java.lang.String), setFormatMappings(java.util.Map<java.lang.String, java.lang.Class<? extends org.springframework.web.servlet.view.jasperreports.AbstractJasperReportsView>>)

字段概要
字段
修饰符和类型字段说明
static String DEFAULT_FORMAT_KEY
Default value used for format key: "format"
- 从类继承的字段 org.springframework.web.servlet.view.jasperreports.AbstractJasperReportsView
  CONTENT_DISPOSITION_INLINE, HEADER_CONTENT_DISPOSITION
- 从类继承的字段 org.springframework.web.servlet.view.AbstractView
  DEFAULT_CONTENT_TYPE
- 从类继承的字段 org.springframework.context.support.ApplicationObjectSupport
  logger
- 从接口继承的字段 org.springframework.web.servlet.View
  PATH_VARIABLES, RESPONSE_STATUS_ATTRIBUTE, SELECTED_CONTENT_TYPE

构造器概要
构造器
构造器说明
JasperReportsMultiFormatView()
Creates a new JasperReportsMultiFormatView instance with a default set of mappings.

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
`protected boolean`	`generatesDownloadContent()`	Return whether this view generates download content (typically binary content like PDF or Excel files).
`Properties`	`getContentDispositionMappings()`	Return the mappings of `Content-Disposition` header values to mapping keys.
`protected void`	`renderReport(net.sf.jasperreports.engine.JasperPrint populatedReport, Map<String,Object> model, HttpServletResponse response)`	Locates the format key in the model using the configured discriminator key and uses this key to lookup the appropriate view class from the mappings.
`void`	`setContentDispositionMappings(Properties mappings)`	Set the mappings of `Content-Disposition` header values to mapping keys.
`void`	`setFormatKey(String formatKey)`	Set the key of the model parameter that holds the format discriminator.
`void`	`setFormatMappings(Map<String,Class<? extends AbstractJasperReportsView>> formatMappings)`	Set the mappings of format discriminators to view class names.

从类继承的方法 org.springframework.web.servlet.view.AbstractUrlBasedView
afterPropertiesSet, checkResource, getUrl, setUrl, toString

从类继承的方法 org.springframework.web.context.support.WebApplicationObjectSupport
getServletContext, getTempDir, getWebApplicationContext, initApplicationContext, initServletContext, isContextRequired, setServletContext

从类继承的方法 org.springframework.context.support.ApplicationObjectSupport
getApplicationContext, getMessageSourceAccessor, requiredContextClass, setApplicationContext

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

- 字段详细资料
  - DEFAULT_FORMAT_KEY
```
public static final String DEFAULT_FORMAT_KEY
```
    Default value used for format key: "format"
    另请参阅:
    常量字段值
- 构造器详细资料
  - JasperReportsMultiFormatView
```
public JasperReportsMultiFormatView()
```
    Creates a new JasperReportsMultiFormatView instance with a default set of mappings.
- 方法详细资料
  - setFormatKey
```
public void setFormatKey(String formatKey)
```
    Set the key of the model parameter that holds the format discriminator. Default is "format".
  - setFormatMappings
```
public void setFormatMappings(Map<String,Class<? extends AbstractJasperReportsView>> formatMappings)
```
    Set the mappings of format discriminators to view class names. The default mappings are:
    csv - JasperReportsCsvView
    html - JasperReportsHtmlView
    pdf - JasperReportsPdfView
    xls - JasperReportsXlsView
    xlsx - JasperReportsXlsxView
    (as of Spring 4.2)
  - setContentDispositionMappings
```
public void setContentDispositionMappings(Properties mappings)
```
    Set the mappings of Content-Disposition header values to mapping keys. If specified, Spring will look at these mappings to determine the value of the Content-Disposition header for a given format mapping.
  - getContentDispositionMappings
```
public Properties getContentDispositionMappings()
```
    Return the mappings of Content-Disposition header values to mapping keys. Mainly available for configuration through property paths that specify individual keys.
  - generatesDownloadContent
```
protected boolean generatesDownloadContent()
```
    从类复制的说明: AbstractView
    Return whether this view generates download content (typically binary content like PDF or Excel files).
    The default implementation returns false. Subclasses are encouraged to return true here if they know that they are generating download content that requires temporary caching on the client side, typically via the response OutputStream.
    覆盖:
    generatesDownloadContent 在类中 AbstractView
    另请参阅:
    AbstractView.prepareResponse(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse), ServletResponse.getOutputStream()
  - renderReport
```
protected void renderReport(net.sf.jasperreports.engine.JasperPrint populatedReport,
                            Map<String,Object> model,
                            HttpServletResponse response)
                     throws Exception
```
    Locates the format key in the model using the configured discriminator key and uses this key to lookup the appropriate view class from the mappings. The rendering of the report is then delegated to an instance of that view class.
    指定者:
    renderReport 在类中 AbstractJasperReportsView
    参数:
    populatedReport - the populated JasperPrint to render
    model - the map containing report parameters
    response - the HTTP response the report should be rendered to
    抛出:
    Exception - if rendering failed
    另请参阅:
    AbstractView.getContentType(), ServletResponse.setContentType(java.lang.String), ServletResponse.setCharacterEncoding(java.lang.String)

类 JasperReportsMultiFormatView

字段概要

从类继承的字段 org.springframework.web.servlet.view.jasperreports.AbstractJasperReportsView

从类继承的字段 org.springframework.web.servlet.view.AbstractView

从类继承的字段 org.springframework.context.support.ApplicationObjectSupport

从接口继承的字段 org.springframework.web.servlet.View

构造器概要

方法概要

从类继承的方法 org.springframework.web.servlet.view.jasperreports.AbstractJasperReportsView

从类继承的方法 org.springframework.web.servlet.view.AbstractUrlBasedView

从类继承的方法 org.springframework.web.servlet.view.AbstractView

从类继承的方法 org.springframework.web.context.support.WebApplicationObjectSupport

从类继承的方法 org.springframework.context.support.ApplicationObjectSupport

从类继承的方法 java.lang.Object

字段详细资料

DEFAULT_FORMAT_KEY

构造器详细资料

JasperReportsMultiFormatView

方法详细资料

setFormatKey

setFormatMappings

setContentDispositionMappings

getContentDispositionMappings

generatesDownloadContent

renderReport