GzipResourceResolver.GzippedResource

java.lang.Object
- org.springframework.core.io.AbstractResource
- - org.springframework.web.servlet.resource.GzipResourceResolver.GzippedResource

All Implemented Interfaces:: InputStreamSource, Resource, EncodedResource

Enclosing class:: GzipResourceResolver

private static final class GzipResourceResolver.GzippedResource
extends AbstractResource
implements EncodedResource

Field Summary

Fields
Modifier and Type Field and Description

private Resource gzipped

private Resource original

Fields
Modifier and Type	Field and Description
`private Resource`	`gzipped`
`private Resource`	`original`

Constructor Summary

Constructors
Constructor and Description

GzippedResource(Resource original)

Constructors
Constructor and Description
`GzippedResource(Resource original)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`long`	`contentLength()` This implementation reads the entire InputStream to calculate the content length.
`Resource`	`createRelative(java.lang.String relativePath)` This implementation throws a FileNotFoundException, assuming that relative resources cannot be created for this resource.
`boolean`	`exists()` This implementation checks whether a File can be opened, falling back to whether an InputStream can be opened.
`java.lang.String`	`getContentEncoding()` The content coding value, as defined in the IANA registry
`java.lang.String`	`getDescription()` Return a description for this resource, to be used for error output when working with the resource.
`java.io.File`	`getFile()` This implementation throws a FileNotFoundException, assuming that the resource cannot be resolved to an absolute file path.
`java.lang.String`	`getFilename()` This implementation always returns `null`, assuming that this resource type does not have a filename.
`java.io.InputStream`	`getInputStream()` Return an `InputStream`.
`java.net.URI`	`getURI()` This implementation builds a URI based on the URL returned by `AbstractResource.getURL()`.
`java.net.URL`	`getURL()` This implementation throws a FileNotFoundException, assuming that the resource cannot be resolved to a URL.
`boolean`	`isOpen()` This implementation always returns `false`.
`boolean`	`isReadable()` This implementation always returns `true`.
`long`	`lastModified()` This implementation checks the timestamp of the underlying File, if available.

Methods inherited from class org.springframework.core.io.AbstractResource
equals, getFileForLastModifiedCheck, hashCode, toString

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - original
```
private final Resource original
```
  - gzipped
```
private final Resource gzipped
```
- Constructor Detail
  - GzippedResource
```
public GzippedResource(Resource original)
                throws java.io.IOException
```
    Throws:
    
    java.io.IOException
- Method Detail
  - getInputStream
```
public java.io.InputStream getInputStream()
                                   throws java.io.IOException
```
    Description copied from interface: InputStreamSource
    
    Return an InputStream.
    It is expected that each call creates a fresh stream.
    This requirement is particularly important when you consider an API such as JavaMail, which needs to be able to read the stream multiple times when creating mail attachments. For such a use case, it is required that each getInputStream() call returns a fresh stream.
    
    Specified by:
    
    getInputStream in interface InputStreamSource
    
    Returns:
    
    the input stream for the underlying resource (must not be null)
    
    Throws:
    
    java.io.IOException - if the stream could not be opened
    
    See Also:
    
    MimeMessageHelper.addAttachment(String, InputStreamSource)
  - exists
```
public boolean exists()
```
    Description copied from class: AbstractResource
    
    This implementation checks whether a File can be opened, falling back to whether an InputStream can be opened. This will cover both directories and content resources.
    
    Specified by:
    
    exists in interface Resource
    
    Overrides:
    
    exists in class AbstractResource
  - isReadable
```
public boolean isReadable()
```
    Description copied from class: AbstractResource
    
    This implementation always returns true.
    
    Specified by:
    
    isReadable in interface Resource
    
    Overrides:
    
    isReadable in class AbstractResource
    
    See Also:
    
    InputStreamSource.getInputStream()
  - isOpen
```
public boolean isOpen()
```
    Description copied from class: AbstractResource
    
    This implementation always returns false.
    
    Specified by:
    
    isOpen in interface Resource
    
    Overrides:
    
    isOpen in class AbstractResource
  - getURL
```
public java.net.URL getURL()
                    throws java.io.IOException
```
    Description copied from class: AbstractResource
    
    This implementation throws a FileNotFoundException, assuming that the resource cannot be resolved to a URL.
    
    Specified by:
    
    getURL in interface Resource
    
    Overrides:
    
    getURL in class AbstractResource
    
    Throws:
    
    java.io.IOException - if the resource cannot be resolved as URL, i.e. if the resource is not available as descriptor
  - getURI
```
public java.net.URI getURI()
                    throws java.io.IOException
```
    Description copied from class: AbstractResource
    
    This implementation builds a URI based on the URL returned by AbstractResource.getURL().
    
    Specified by:
    
    getURI in interface Resource
    
    Overrides:
    
    getURI in class AbstractResource
    
    Throws:
    
    java.io.IOException - if the resource cannot be resolved as URI, i.e. if the resource is not available as descriptor
  - getFile
```
public java.io.File getFile()
                     throws java.io.IOException
```
    Description copied from class: AbstractResource
    
    This implementation throws a FileNotFoundException, assuming that the resource cannot be resolved to an absolute file path.
    
    Specified by:
    
    getFile in interface Resource
    
    Overrides:
    
    getFile in class AbstractResource
    
    Throws:
    
    java.io.IOException - if the resource cannot be resolved as absolute file path, i.e. if the resource is not available in a file system
  - contentLength
```
public long contentLength()
                   throws java.io.IOException
```
    Description copied from class: AbstractResource
    
    This implementation reads the entire InputStream to calculate the content length. Subclasses will almost always be able to provide a more optimal version of this, e.g. checking a File length.
    
    Specified by:
    
    contentLength in interface Resource
    
    Overrides:
    
    contentLength in class AbstractResource
    
    Throws:
    
    java.io.IOException - if the resource cannot be resolved (in the file system or as some other known physical resource type)
    
    See Also:
    
    InputStreamSource.getInputStream()
  - lastModified
```
public long lastModified()
                  throws java.io.IOException
```
    Description copied from class: AbstractResource
    
    This implementation checks the timestamp of the underlying File, if available.
    
    Specified by:
    
    lastModified in interface Resource
    
    Overrides:
    
    lastModified in class AbstractResource
    
    Throws:
    
    java.io.IOException - if the resource cannot be resolved (in the file system or as some other known physical resource type)
    
    See Also:
    
    AbstractResource.getFileForLastModifiedCheck()
  - createRelative
```
public Resource createRelative(java.lang.String relativePath)
                        throws java.io.IOException
```
    Description copied from class: AbstractResource
    
    This implementation throws a FileNotFoundException, assuming that relative resources cannot be created for this resource.
    
    Specified by:
    
    createRelative in interface Resource
    
    Overrides:
    
    createRelative in class AbstractResource
    
    Parameters:
    
    relativePath - the relative path (relative to this resource)
    
    Returns:
    
    the resource handle for the relative resource
    
    Throws:
    
    java.io.IOException - if the relative resource cannot be determined
  - getFilename
```
public java.lang.String getFilename()
```
    Description copied from class: AbstractResource
    
    This implementation always returns null, assuming that this resource type does not have a filename.
    
    Specified by:
    
    getFilename in interface Resource
    
    Overrides:
    
    getFilename in class AbstractResource
  - getDescription
```
public java.lang.String getDescription()
```
    Description copied from interface: Resource
    
    Return a description for this resource, to be used for error output when working with the resource.
    Implementations are also encouraged to return this value from their toString method.
    
    Specified by:
    
    getDescription in interface Resource
    
    See Also:
    
    Object.toString()
  - getContentEncoding
```
public java.lang.String getContentEncoding()
```
    Description copied from interface: EncodedResource
    
    The content coding value, as defined in the IANA registry
    
    Specified by:
    
    getContentEncoding in interface EncodedResource
    
    Returns:
    
    the content encoding
    
    See Also:
    
    HTTP/1.1: Semantics and Content, section 3.1.2.1

Class GzipResourceResolver.GzippedResource

Field Summary

Constructor Summary

Method Summary

Methods inherited from class org.springframework.core.io.AbstractResource

Methods inherited from class java.lang.Object

Field Detail

original

gzipped

Constructor Detail

GzippedResource

Method Detail

getInputStream

exists

isReadable

isOpen

getURL

getURI

getFile

contentLength

lastModified

createRelative

getFilename

getDescription

getContentEncoding