com.vaadin.flow.server.webjar

Class WebJarServer

java.lang.Object

com.vaadin.flow.server.webjar.WebJarServer

All Implemented Interfaces:

Serializable

public class WebJarServer
extends Object
implements Serializable

Handles requests that may require webJars contents. In this case, writes the required resource contents from a webJar into the response.

By default, webJars are enabled for development mode and disabled for production mode. There is a way to override this behavior by setting Constants.DISABLE_WEBJARS param.

Since:

1.0.

Author:

Vaadin Ltd

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
WebJarServer(DeploymentConfiguration deploymentConfiguration) Creates a webJar server that is able to search webJars for files and return them.

Method Summary

Modifier and Type	Method and Description
Optional<String>	getWebJarResourcePath(String filePathInContext) Gets web jar resource path if it exists.
boolean	tryServeWebJarResource(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Searches for file requested in the webJars.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WebJarServer

public WebJarServer(DeploymentConfiguration deploymentConfiguration)

Creates a webJar server that is able to search webJars for files and return them.

Parameters:

deploymentConfiguration - configuration for the deployment, not null

Method Detail

tryServeWebJarResource

public boolean tryServeWebJarResource(javax.servlet.http.HttpServletRequest request,
                                      javax.servlet.http.HttpServletResponse response)
                               throws IOException

Searches for file requested in the webJars. If found, the file contents is written into request.

Parameters:

request - the servlet request

response - the servlet response

Returns:

true if response was populated with webJar contents, false otherwise

Throws:

IOException - if response population fails

getWebJarResourcePath

public Optional<String> getWebJarResourcePath(String filePathInContext)

Gets web jar resource path if it exists.

Parameters:

filePathInContext - servlet context path for file

Returns:

an optional web jar resource path, or an empty optional if the resource is not web jar resource