org.springframework.web.servlet.view.script

Class ScriptTemplateView

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.script.ScriptTemplateView

All Implemented Interfaces:

Aware, BeanNameAware, InitializingBean, ApplicationContextAware, ServletContextAware, View

public class ScriptTemplateView
extends AbstractUrlBasedView

An AbstractUrlBasedView subclass designed to run any template library based on a JSR-223 script engine.

If not set, each property is auto-detected by looking up up a single ScriptTemplateConfig bean in the web application context and using it to obtain the configured properties.

Nashorn Javascript engine requires Java 8+, and may require setting the sharedEngine property to false in order to run properly. See ScriptTemplateConfigurer.setSharedEngine(Boolean) for more details.

Since:

4.2

Author:

Sebastien Deleuze

See Also:

ScriptTemplateConfigurer, ScriptTemplateViewResolver

Field Summary

Fields

Modifier and Type	Field and Description
private java.nio.charset.Charset	charset
private static java.nio.charset.Charset	DEFAULT_CHARSET
private static java.lang.String	DEFAULT_RESOURCE_LOADER_PATH
private javax.script.ScriptEngine	engine
private java.lang.ThreadLocal<javax.script.ScriptEngine>	engineHolder
private java.lang.String	engineName
private java.lang.String	renderFunction
private java.lang.String	renderObject
private ResourceLoader	resourceLoader
private java.lang.String	resourceLoaderPath
private java.lang.String[]	scripts
private java.lang.Boolean	sharedEngine

Fields inherited from class org.springframework.web.servlet.view.AbstractView

DEFAULT_CONTENT_TYPE

Fields inherited from class org.springframework.context.support.ApplicationObjectSupport

logger

Fields inherited from interface org.springframework.web.servlet.View

PATH_VARIABLES, RESPONSE_STATUS_ATTRIBUTE, SELECTED_CONTENT_TYPE

Constructor Summary

Constructors

Constructor and Description
ScriptTemplateView()

Method Summary

Modifier and Type	Method and Description
protected ScriptTemplateConfig	autodetectViewConfig()
protected java.lang.ClassLoader	createClassLoader()
protected javax.script.ScriptEngine	createEngineFromName()
protected javax.script.ScriptEngine	getEngine()
protected java.lang.String	getTemplate(java.lang.String path)
protected void	initApplicationContext(ApplicationContext context) Calls #initServletContext(javax.servlet.ServletContext) if the given ApplicationContext is a WebApplicationContext.
protected void	loadScripts(javax.script.ScriptEngine engine)
protected void	renderMergedOutputModel(java.util.Map<java.lang.String,java.lang.Object> model, HttpServletRequest request, HttpServletResponse response) Subclasses must implement this method to actually render the view.
void	setCharset(java.nio.charset.Charset charset) See ScriptTemplateConfigurer.setCharset(Charset) documentation.
void	setEngine(javax.script.ScriptEngine engine) See ScriptTemplateConfigurer.setEngine(ScriptEngine) documentation.
void	setEngineName(java.lang.String engineName) See ScriptTemplateConfigurer.setEngineName(String) documentation.
void	setRenderFunction(java.lang.String functionName) See ScriptTemplateConfigurer.setRenderFunction(String) documentation.
void	setRenderObject(java.lang.String renderObject) See ScriptTemplateConfigurer.setRenderObject(String) documentation.
void	setResourceLoaderPath(java.lang.String resourceLoaderPath) See ScriptTemplateConfigurer.setResourceLoaderPath(String) documentation.
void	setScripts(java.lang.String... scripts) See ScriptTemplateConfigurer.setScripts(String...) documentation.
void	setSharedEngine(java.lang.Boolean sharedEngine) See ScriptTemplateConfigurer.setSharedEngine(Boolean) documentation.

Methods inherited from class org.springframework.web.servlet.view.AbstractUrlBasedView

afterPropertiesSet, checkResource, getUrl, isUrlRequired, setUrl, toString

Methods inherited from class org.springframework.web.servlet.view.AbstractView

addStaticAttribute, createMergedOutputModel, createRequestContext, createTemporaryOutputStream, exposeModelAsRequestAttributes, generatesDownloadContent, getAttributesMap, getBeanName, getContentType, getRequestContextAttribute, getRequestToExpose, getStaticAttributes, isExposePathVariables, prepareResponse, render, setAttributes, setAttributesCSV, setAttributesMap, setBeanName, setContentType, setExposeContextBeansAsAttributes, setExposedContextBeanNames, setExposePathVariables, setRequestContextAttribute, setResponseContentType, writeToResponse

Methods inherited from class org.springframework.web.context.support.WebApplicationObjectSupport

getServletContext, getTempDir, getWebApplicationContext, initServletContext, isContextRequired, setServletContext

Methods inherited from class org.springframework.context.support.ApplicationObjectSupport

getApplicationContext, getMessageSourceAccessor, initApplicationContext, requiredContextClass, setApplicationContext

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_CHARSET

private static final java.nio.charset.Charset DEFAULT_CHARSET

DEFAULT_RESOURCE_LOADER_PATH

private static final java.lang.String DEFAULT_RESOURCE_LOADER_PATH

See Also:

Constant Field Values

engineHolder

private final java.lang.ThreadLocal<javax.script.ScriptEngine> engineHolder

engine

private javax.script.ScriptEngine engine

engineName

private java.lang.String engineName

sharedEngine

private java.lang.Boolean sharedEngine

scripts

private java.lang.String[] scripts

renderObject

private java.lang.String renderObject

renderFunction

private java.lang.String renderFunction

charset

private java.nio.charset.Charset charset

resourceLoader

private ResourceLoader resourceLoader

resourceLoaderPath

private java.lang.String resourceLoaderPath

Constructor Detail

ScriptTemplateView

public ScriptTemplateView()

Method Detail

setEngine

public void setEngine(javax.script.ScriptEngine engine)

See ScriptTemplateConfigurer.setEngine(ScriptEngine) documentation.

setEngineName

public void setEngineName(java.lang.String engineName)

See ScriptTemplateConfigurer.setEngineName(String) documentation.

setSharedEngine

public void setSharedEngine(java.lang.Boolean sharedEngine)

See ScriptTemplateConfigurer.setSharedEngine(Boolean) documentation.

setScripts

public void setScripts(java.lang.String... scripts)

See ScriptTemplateConfigurer.setScripts(String...) documentation.

setRenderObject

public void setRenderObject(java.lang.String renderObject)

See ScriptTemplateConfigurer.setRenderObject(String) documentation.

setRenderFunction

public void setRenderFunction(java.lang.String functionName)

See ScriptTemplateConfigurer.setRenderFunction(String) documentation.

setCharset

public void setCharset(java.nio.charset.Charset charset)

See ScriptTemplateConfigurer.setCharset(Charset) documentation.

setResourceLoaderPath

public void setResourceLoaderPath(java.lang.String resourceLoaderPath)

See ScriptTemplateConfigurer.setResourceLoaderPath(String) documentation.

initApplicationContext

protected void initApplicationContext(ApplicationContext context)

Description copied from class: WebApplicationObjectSupport

Calls #initServletContext(javax.servlet.ServletContext) if the given ApplicationContext is a WebApplicationContext.

Overrides:

initApplicationContext in class WebApplicationObjectSupport

Parameters:

context - the containing ApplicationContext

See Also:

ApplicationObjectSupport.setApplicationContext(org.springframework.context.ApplicationContext)

getEngine

protected javax.script.ScriptEngine getEngine()

createEngineFromName

protected javax.script.ScriptEngine createEngineFromName()

loadScripts

protected void loadScripts(javax.script.ScriptEngine engine)

createClassLoader

protected java.lang.ClassLoader createClassLoader()

autodetectViewConfig

protected ScriptTemplateConfig autodetectViewConfig()
                                             throws BeansException

Throws:

BeansException

renderMergedOutputModel

protected void renderMergedOutputModel(java.util.Map<java.lang.String,java.lang.Object> model,
                                       HttpServletRequest request,
                                       HttpServletResponse response)
                                throws java.lang.Exception

Description copied from class: AbstractView

Subclasses must implement this method to actually render the view.

The first step will be preparing the request: In the JSP case, this would mean setting model objects as request attributes. The second step will be the actual rendering of the view, for example including the JSP via a RequestDispatcher.

Specified by:

renderMergedOutputModel in class AbstractView

Parameters:

model - combined output Map (never null), with dynamic values taking precedence over static attributes

request - current HTTP request

response - current HTTP response

Throws:

java.lang.Exception - if rendering failed

getTemplate

protected java.lang.String getTemplate(java.lang.String path)
                                throws java.io.IOException

Throws:

java.io.IOException