jspinterceptor.java

低版本的tomcat 对于有些老版本的应用还真的需要老版的中间件

// 	System.out.println("uri=" + uri +
// 			   //" outputDir=" + outputDir +
// 			   //" jspSource=" + jspSource +
// 			   " pkgDir=" + pkgDir +
// 			   " baseClassN=" + baseClassN +
// 			   " ext=" + ext +
// 			   " mapPath=" + mapPath +
// 			   " version=" + version);
	
	
    }
    
    /** After startup we try to find if the file was precompiled
	before
    */
    void readVersion() {
	File mapFile=new File(mapPath);
	version=0;
	compileTime=0;
	try {
	    FileInputStream fis=new FileInputStream( mapFile );
	    version=(int)fis.read();
// 	    System.out.println("Version=" + version );
	    fis.close();
	} catch( Exception ex ) {
	    ex.printStackTrace();
	}
    }

    /** After we compile a page, we save the version in a
	file with known name, so we can restore the state when we
	restart. Note that this should move to a general-purpose
	persist repository ( on my plans for next version of tomcat )
    */
    void writeVersion() {
	File mapFile=new File(mapPath);
	try {
	    FileOutputStream fis=new FileOutputStream( mapFile );
	    fis.write(version);
// 	    System.out.println("WVersion=" + version );
	    fis.close();
	} catch( Exception ex ) {
	    ex.printStackTrace();
	}
    }

    /** After a startup we read the compile time from the class
	file lastModified. No further access to that file is done.
    */
    void updateCompileTime() {
	File f=new File( realClassPath );
	compileTime=0;
	if( ! f.exists() ) return;
	compileTime=f.lastModified();
    }
}

// XXX add code to set the options
class TomcatOptions implements Options {
    public boolean keepGenerated = true;
    public boolean largeFile = false;
    public boolean mappedFile = false;
    public boolean sendErrorToClient = false;
    public boolean classDebugInfo = false;
    public String ieClassId = "clsid:8AD9C840-044E-11D1-B3E9-00805F499D93";
    public Class jspCompilerPlugin = null;
    public String jspCompilerPath = null;

    public File scratchDir;
    private Object protectionDomain;
    public String classpath = null;

    public boolean getKeepGenerated() {
        return keepGenerated;
    }

    public boolean getLargeFile() {
        return largeFile;
    }

    public boolean getMappedFile() {
        return mappedFile;
    }
    
    public boolean getSendErrorToClient() {
        return sendErrorToClient;
    }
 
    public boolean getClassDebugInfo() {
        return classDebugInfo;
    }

    public String getIeClassId() {
        return ieClassId;
    }

    public void setScratchDir( File f ) {
	scratchDir=f;
    }
    
    public File getScratchDir() {
	System.out.println("Options: getScratchDir " + scratchDir);
        return scratchDir;
    }

    public final Object getProtectionDomain() {
	System.out.println("Options: GetPD" );
	return protectionDomain;
    }

    public String getClassPath() {
	System.out.println("Options: GetCP " + classpath  );
        return classpath;
    }

    public Class getJspCompilerPlugin() {
        return jspCompilerPlugin;
    }

    public String getJspCompilerPath() {
        return jspCompilerPath;
    }

    /**
     * FIXME: see how compiler.Compiler handles javaEncoding
     * and implement that behavior in this class when it 
     * is 'enabled' (pierred). This has been added only so the
     * code compiles.
     */
    public String getJavaEncoding() {
	return "FIXME: NOT IMPLEMENTED";
    }
}


class JspEngineContext1 implements JspCompilationContext {
    JspReader reader;
    ServletWriter writer;
    ServletContext context;
    JspLoader loader;
    String classpath; // for compiling JSPs.
    boolean isErrPage;
    String jspFile;
    String servletClassName;
    String servletPackageName;
    String servletJavaFileName;
    String contentType;
    Options options;

    Request req;
    Mangler m;
    
    public JspEngineContext1(Request req, Mangler m)
    {
	this.req=req;
	this.m=m;
    }

    public HttpServletRequest getRequest() {
	System.out.println("JspEngineContext1: getRequest " + req );
        return req.getFacade();
    }
    

    /**
     * Get the http response we are using now...
     */
    public HttpServletResponse getResponse() {
	System.out.println("JspEngineContext1: getResponse " );
        return req.getResponse().getFacade();
    }

    /**
     * The classpath that is passed off to the Java compiler. 
     */
    public String getClassPath() {
	System.out.println("JspEngineContext1: getClassPath " +
			   req.getContext().getServletLoader().getClassPath());
	return req.getContext().getServletLoader().getClassPath();
    }
    
    /**
     * Get the input reader for the JSP text. 
     */
    public JspReader getReader() {
	System.out.println("JspEngineContext1: getReader " + reader );
        return reader;
    }
    
    /**
     * Where is the servlet being generated?
     */
    public ServletWriter getWriter() {
	System.out.println("JspEngineContext1: getWriter " + writer );
        return writer;
    }
    
    /**
     * Get the ServletContext for the JSP we're processing now. 
     */
    public ServletContext getServletContext() {
	System.out.println("JspEngineContext1: getCtx " +
			   req.getContext().getFacade());
        return req.getContext().getFacade();
    }
    
    /**
     * What class loader to use for loading classes while compiling
     * this JSP? I don't think this is used right now -- akv. 
     */
    public ClassLoader getClassLoader() {
	System.out.println("JspEngineContext1: getLoader " + loader );
        return req.getContext().getServletLoader().getClassLoader();
    }

    public void addJar( String jar ) throws IOException {
	System.out.println("Add jar " + jar);
	//loader.addJar( jar );
    }

    /**
     * Are we processing something that has been declared as an
     * errorpage? 
     */
    public boolean isErrorPage() {
	System.out.println("JspEngineContext1: isErrorPage " + isErrPage );
        return isErrPage;
    }
    
    /**
     * What is the scratch directory we are generating code into?
     * FIXME: In some places this is called scratchDir and in some
     * other places it is called outputDir.
     */
    public String getOutputDir() {
	System.out.println("JspEngineContext1: getOutputDir " +
			   req.getContext().getWorkDir().getAbsolutePath());
        return req.getContext().getWorkDir().getAbsolutePath();
    }
    
    /**
     * Path of the JSP URI. Note that this is not a file name. This is
     * the context rooted URI of the JSP file. 
     */
    public String getJspFile() {
	String sP=req.getServletPath();
	Context ctx=req.getContext();
	System.out.println("JspEngineContext1: getJspFile " +
			   sP);//   ctx.getRealPath( sP ) );
	//        return ctx.getRealPath( sP );
	return sP;
    }
    
    /**
     * Just the class name (does not include package name) of the
     * generated class. 
     */
    public String getServletClassName() {
	System.out.println("JspEngineContext1: getServletClassName " +
			   m.getClassName());
        return m.getClassName();
    }
    
    /**
     * The package name into which the servlet class is generated. 
     */
    public String getServletPackageName() {
	System.out.println("JspEngineContext1: getServletPackageName " +
			   servletPackageName );
        return servletPackageName;
    }

    /**
     * Utility method to get the full class name from the package and
     * class name. 
     */
    public final String getFullClassName() {
	System.out.println("JspEngineContext1: getServletPackageName " +
			   servletPackageName + "." + servletClassName);
        if (servletPackageName == null)
            return servletClassName;
        return servletPackageName + "." + servletClassName;
    }

    /**
     * Full path name of the Java file into which the servlet is being
     * generated. 
     */
    public String getServletJavaFileName() {
	System.out.println("JspEngineContext1: getServletPackageName " +
			   servletPackageName + "." + servletClassName);
        return servletJavaFileName;
    }

    /**
     * Are we keeping generated code around?
     */
    public boolean keepGenerated() {
        return options.getKeepGenerated();
    }

    /**
     * What's the content type of this JSP? Content type includes
     * content type and encoding. 
     */
    public String getContentType() {
        return contentType;
    }

    /**
     * Get hold of the Options object for this context. 
     */
    public Options getOptions() {
        return options;
    }

    public void setOptions(Options options) {
	this.options=options;
    }
    
    public void setContentType(String contentType) {
        this.contentType = contentType;
    }

    public void setReader(JspReader reader) {
        this.reader = reader;
    }
    
    public void setWriter(ServletWriter writer) {
        this.writer = writer;
    }
    
    public void setServletClassName(String servletClassName) {
        this.servletClassName = servletClassName;
    }
    
    public void setServletPackageName(String servletPackageName) {
        this.servletPackageName = servletPackageName;
    }
    
    public void setServletJavaFileName(String servletJavaFileName) {
        this.servletJavaFileName = servletJavaFileName;
    }
    
    public void setErrorPage(boolean isErrPage) {
        this.isErrPage = isErrPage;
    }

    public Compiler createCompiler() throws JasperException {
	System.out.println("JspEngineContext1: createCompiler ");
	return null;
    }
    
    public String resolveRelativeUri(String uri)
    {
	System.out.println("JspEngineContext1: resolveRelativeUri " + uri);
	return null;
    };    

    public java.io.InputStream getResourceAsStream(String res)
    {
	System.out.println("JspEngineContext1: getRAS " + res);
        return req.getContext().getFacade().getResourceAsStream(res);
    };

    /** 
     * Gets the actual path of a URI relative to the context of
     * the compilation.
     */
    public String getRealPath(String path)
    {
	System.out.println("GetRP " + path + " " +
			   req.getContext().getRealPath(path));
	return req.getContext().getRealPath(path);
    };
}


class JspMangler implements Mangler{
    JspInfo jspInfo;
    
    public JspMangler(JspInfo info)  {
	this.jspInfo=info;
    }

    public final String getClassName() {
        return jspInfo.classN;
    }

    public final String getJavaFileName() {
	return jspInfo.javaFilePath;
    }

    public final String getPackageName() {
	return jspInfo.pkg;
	// It's not used, and shouldn't be used by compiler.
	// ( well, it's used to rename the file after compile
	// in JspServlet scheme - that must be out of compiler )
    }

    // Full path to the class file - without version.
    public final String getClassFileName() {
	return null; // see getPackageName comment
    }
}