Package org.zkoss.web.servlet.dsp
Class ServletDspContext
- java.lang.Object
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- org.zkoss.web.servlet.dsp.ServletDspContext
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- All Implemented Interfaces:
DspContext
,RequestContext
- Direct Known Subclasses:
ExtendletDspContext
public class ServletDspContext extends java.lang.Object implements DspContext
A DSP context based on HTTP servlet request and response.- Author:
- tomyeh
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Constructor Summary
Constructors Constructor Description ServletDspContext(javax.servlet.ServletContext ctx, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.io.Writer out, Locator locator)
Constructor with the specified writer.ServletDspContext(javax.servlet.ServletContext ctx, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, Locator locator)
Constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
encodeURL(java.lang.String uri)
Returns the encoded URL.Locator
getLocator()
Returns the locator for loading resources, such as taglib.java.io.Writer
getOut()
Returns the writer, never null.javax.servlet.ServletRequest
getRequest()
Returns the request, or null if not available.javax.servlet.ServletResponse
getResponse()
Returns the response, or null if not available.javax.servlet.ServletContext
getServletContext()
Returns the request, or null if not available.VariableResolver
getVariableResolver()
Returns the variable resolver.void
include(java.lang.String uri, java.util.Map params)
Includes the specified URI and render the result to the specified output.boolean
isIncluded()
Returns whether this page is included.void
setContentType(java.lang.String ctype)
Sets the content type of the output.void
setOut(java.io.Writer out)
Changes the writer of this context to the specified one.
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Constructor Detail
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ServletDspContext
public ServletDspContext(javax.servlet.ServletContext ctx, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, Locator locator)
Constructor.- Parameters:
locator
- used to locate resources, such as taglib. If null is specified, the locator for the specified servlet context is used. (In other words, we use ServletContextLocator(ctx), if locator is null).
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ServletDspContext
public ServletDspContext(javax.servlet.ServletContext ctx, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.io.Writer out, Locator locator)
Constructor with the specified writer.- Parameters:
locator
- used to locate resources, such as taglib. If null is specified, the locator for the specified servlet context is used. (In other words, we use ServletContextLocator(ctx), if locator is null).out
- the output to generate the result. If null, it is the same asServletDspContext(ServletContext,HttpServletRequest,HttpServletResponse,Locator)
In other words, response.getWriter() is used.- Since:
- 2.4.1
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Method Detail
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getLocator
public Locator getLocator()
Description copied from interface:DspContext
Returns the locator for loading resources, such as taglib. You might return null if the page not referencing external resources.To load the resource from a web application, use
ServletContextLocator
To load the resource from class path, use org.zkoss.util.resource.Resources.getDefault().- Specified by:
getLocator
in interfaceDspContext
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setContentType
public void setContentType(java.lang.String ctype)
Description copied from interface:DspContext
Sets the content type of the output.- Specified by:
setContentType
in interfaceDspContext
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setOut
public void setOut(java.io.Writer out)
Description copied from interface:DspContext
Changes the writer of this context to the specified one.- Specified by:
setOut
in interfaceDspContext
- Parameters:
out
- the new writer. If null, it is restored to the default one.
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encodeURL
public java.lang.String encodeURL(java.lang.String uri) throws javax.servlet.ServletException, java.io.IOException
Description copied from interface:DspContext
Returns the encoded URL. The returned URL is also encoded with HttpServletResponse.encodeURL.- Specified by:
encodeURL
in interfaceDspContext
- Parameters:
uri
- it must be empty or starts with "/". It might contain "*" for current browser code and Locale.- Returns:
- the complete URL (excluding the machine name). It includes the context path and the servlet to interpret this extended resource.
- Throws:
javax.servlet.ServletException
java.io.IOException
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include
public void include(java.lang.String uri, java.util.Map params) throws javax.servlet.ServletException, java.io.IOException
Description copied from interface:DspContext
Includes the specified URI and render the result to the specified output.- Specified by:
include
in interfaceDspContext
- Parameters:
uri
- the URI to include. It is OK to relevant (without leading '/'). If starts with "/", the context path of request is assumed. To reference to foreign context, use "~ctx/" where ctx is the context path of the foreign context (without leading '/').params
- a map of parameters, or null to ignore. The map is passed thru the request attribute called arg.- Throws:
javax.servlet.ServletException
java.io.IOException
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isIncluded
public boolean isIncluded()
Description copied from interface:DspContext
Returns whether this page is included.- Specified by:
isIncluded
in interfaceDspContext
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getOut
public java.io.Writer getOut() throws java.io.IOException
Description copied from interface:RequestContext
Returns the writer, never null.- Specified by:
getOut
in interfaceRequestContext
- Throws:
java.io.IOException
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getRequest
public javax.servlet.ServletRequest getRequest()
Description copied from interface:RequestContext
Returns the request, or null if not available.- Specified by:
getRequest
in interfaceRequestContext
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getResponse
public javax.servlet.ServletResponse getResponse()
Description copied from interface:RequestContext
Returns the response, or null if not available.- Specified by:
getResponse
in interfaceRequestContext
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getServletContext
public javax.servlet.ServletContext getServletContext()
Description copied from interface:RequestContext
Returns the request, or null if not available.- Specified by:
getServletContext
in interfaceRequestContext
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getVariableResolver
public VariableResolver getVariableResolver()
Description copied from interface:RequestContext
Returns the variable resolver.- Specified by:
getVariableResolver
in interfaceRequestContext
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