actionservlet.java

java编程的一些小例子

        configDigester = new Digester();
        configDigester.setNamespaceAware(true);
        configDigester.setValidating(validating);
        configDigester.setUseContextClassLoader(true);
        configDigester.addRuleSet(new ConfigRuleSet());
        for(int i = 0; i < registrations.length; i += 2)
        {
            URL url = getClass().getResource(registrations[i + 1]);
            if(url != null)
                configDigester.register(registrations[i], url.toString());
        }

        String rulesets = getServletConfig().getInitParameter("rulesets");
        if(rulesets == null)
            rulesets = "";
        rulesets = rulesets.trim();
        String ruleset = null;
        while(rulesets.length() > 0) 
        {
            int comma = rulesets.indexOf(",");
            if(comma < 0)
            {
                ruleset = rulesets.trim();
                rulesets = "";
            }
            else
            {
                ruleset = rulesets.substring(0, comma).trim();
                rulesets = rulesets.substring(comma + 1).trim();
            }
            if(log.isDebugEnabled())
                log.debug("Configuring custom Digester Ruleset of type " + ruleset);
            try
            {
                RuleSet instance = (RuleSet)RequestUtils.applicationInstance(ruleset);
                configDigester.addRuleSet(instance);
            }
            catch(Exception e)
            {
                log.error("Exception configuring custom Digester RuleSet", e);
                throw new ServletException(e);
            }
        }

        return configDigester;
    }

    protected void initDataSources()
        throws ServletException
    {
    }

    protected void initInternal()
        throws ServletException
    {
        try
        {
            internal = MessageResources.getMessageResources(internalName);
        }
        catch(MissingResourceException e)
        {
            log.error("Cannot load internal resources from '" + internalName + "'", e);
            throw new UnavailableException("Cannot load internal resources from '" + internalName + "'");
        }
    }

    protected void initOther()
        throws ServletException
    {
        String value = null;
        value = getServletConfig().getInitParameter("config");
        if(value != null)
            config = value;
        value = getServletConfig().getInitParameter("debug");
        if(value != null)
            try
            {
                debug = Integer.parseInt(value);
            }
            catch(NumberFormatException e)
            {
                debug = 0;
            }
        value = getServletConfig().getInitParameter("convertNull");
        if("true".equalsIgnoreCase(value) || "yes".equalsIgnoreCase(value) || "on".equalsIgnoreCase(value) || "y".equalsIgnoreCase(value) || "1".equalsIgnoreCase(value))
            convertNull = true;
        if(convertNull)
        {
            ConvertUtils.deregister();
            ConvertUtils.register(new BigDecimalConverter(null), class$java$math$BigDecimal != null ? class$java$math$BigDecimal : (class$java$math$BigDecimal = class$("java.math.BigDecimal")));
            ConvertUtils.register(new BigIntegerConverter(null), class$java$math$BigInteger != null ? class$java$math$BigInteger : (class$java$math$BigInteger = class$("java.math.BigInteger")));
            ConvertUtils.register(new BooleanConverter(null), class$java$lang$Boolean != null ? class$java$lang$Boolean : (class$java$lang$Boolean = class$("java.lang.Boolean")));
            ConvertUtils.register(new ByteConverter(null), class$java$lang$Byte != null ? class$java$lang$Byte : (class$java$lang$Byte = class$("java.lang.Byte")));
            ConvertUtils.register(new CharacterConverter(null), class$java$lang$Character != null ? class$java$lang$Character : (class$java$lang$Character = class$("java.lang.Character")));
            ConvertUtils.register(new DoubleConverter(null), class$java$lang$Double != null ? class$java$lang$Double : (class$java$lang$Double = class$("java.lang.Double")));
            ConvertUtils.register(new FloatConverter(null), class$java$lang$Float != null ? class$java$lang$Float : (class$java$lang$Float = class$("java.lang.Float")));
            ConvertUtils.register(new IntegerConverter(null), class$java$lang$Integer != null ? class$java$lang$Integer : (class$java$lang$Integer = class$("java.lang.Integer")));
            ConvertUtils.register(new LongConverter(null), class$java$lang$Long != null ? class$java$lang$Long : (class$java$lang$Long = class$("java.lang.Long")));
            ConvertUtils.register(new ShortConverter(null), class$java$lang$Short != null ? class$java$lang$Short : (class$java$lang$Short = class$("java.lang.Short")));
        }
    }

    protected void initServlet()
        throws ServletException
    {
        InputStream input;
        Exception exception;
        servletName = getServletConfig().getServletName();
        Digester digester = new Digester();
        digester.push(this);
        digester.setNamespaceAware(true);
        digester.setValidating(false);
        for(int i = 0; i < registrations.length; i += 2)
        {
            URL url = getClass().getResource(registrations[i + 1]);
            if(url != null)
                digester.register(registrations[i], url.toString());
        }

        digester.addCallMethod("web-app/servlet-mapping", "addServletMapping", 2);
        digester.addCallParam("web-app/servlet-mapping/servlet-name", 0);
        digester.addCallParam("web-app/servlet-mapping/url-pattern", 1);
        if(log.isDebugEnabled())
            log.debug("Scanning web.xml for controller servlet mapping");
        input = getServletContext().getResourceAsStream("/WEB-INF/web.xml");
        try
        {
            digester.parse(input);
        }
        catch(IOException e)
        {
            log.error(internal.getMessage("configWebXml"), e);
            throw new ServletException(e);
        }
        catch(SAXException e)
        {
            log.error(internal.getMessage("configWebXml"), e);
            throw new ServletException(e);
        }
        finally
        {
            if(input == null) goto _L0; else goto _L0
        }
        if(input != null)
            try
            {
                input.close();
            }
            catch(IOException e)
            {
                log.error(internal.getMessage("configWebXml"), e);
                throw new ServletException(e);
            }
        break MISSING_BLOCK_LABEL_313;
        try
        {
            input.close();
        }
        catch(IOException e)
        {
            log.error(internal.getMessage("configWebXml"), e);
            throw new ServletException(e);
        }
        throw exception;
        if(log.isDebugEnabled())
            log.debug("Mapping for servlet '" + servletName + "' = '" + servletMapping + "'");
        if(servletMapping != null)
            getServletContext().setAttribute("org.apache.struts.action.SERVLET_MAPPING", servletMapping);
        return;
    }

    protected void process(HttpServletRequest request, HttpServletResponse response)
        throws IOException, ServletException
    {
        RequestUtils.selectModule(request, getServletContext());
        getRequestProcessor(getModuleConfig(request)).process(request, response);
    }

    private void defaultControllerConfig(ModuleConfig config)
    {
        String value = null;
        ControllerConfig cc = config.getControllerConfig();
        value = getServletConfig().getInitParameter("bufferSize");
        if(value != null)
            cc.setBufferSize(Integer.parseInt(value));
        value = getServletConfig().getInitParameter("content");
        if(value != null)
            cc.setContentType(value);
        value = getServletConfig().getInitParameter("locale");
        if(value != null)
            if("true".equalsIgnoreCase(value) || "yes".equalsIgnoreCase(value))
                cc.setLocale(true);
            else
                cc.setLocale(false);
        value = getServletConfig().getInitParameter("maxFileSize");
        if(value != null)
            cc.setMaxFileSize(value);
        value = getServletConfig().getInitParameter("nocache");
        if(value != null)
            if("true".equalsIgnoreCase(value) || "yes".equalsIgnoreCase(value))
                cc.setNocache(true);
            else
                cc.setNocache(false);
        value = getServletConfig().getInitParameter("multipartClass");
        if(value != null)
            cc.setMultipartClass(value);
        value = getServletConfig().getInitParameter("tempDir");
        if(value != null)
            cc.setTempDir(value);
    }

    private void defaultFormBeansConfig(ModuleConfig config)
    {
        FormBeanConfig fbcs[] = config.findFormBeanConfigs();
        ActionFormBeans afb = new ActionFormBeans();
        afb.setFast(false);
        for(int i = 0; i < fbcs.length; i++)
            afb.addFormBean((ActionFormBean)fbcs[i]);

        afb.setFast(true);
        getServletContext().setAttribute("org.apache.struts.action.FORM_BEANS", afb);
    }

    private void defaultForwardsConfig(ModuleConfig config)
    {
        org.apache.struts.config.ForwardConfig fcs[] = config.findForwardConfigs();
        ActionForwards af = new ActionForwards();
        af.setFast(false);
        for(int i = 0; i < fcs.length; i++)
            af.addForward((ActionForward)fcs[i]);

        af.setFast(true);
        getServletContext().setAttribute("org.apache.struts.action.FORWARDS", af);
    }

    private void defaultMappingsConfig(ModuleConfig config)
    {
        org.apache.struts.config.ActionConfig acs[] = config.findActionConfigs();
        ActionMappings am = new ActionMappings();
        am.setServlet(this);
        am.setFast(false);
        for(int i = 0; i < acs.length; i++)
            am.addMapping((ActionMapping)acs[i]);

        am.setFast(true);
        getServletContext().setAttribute("org.apache.struts.action.MAPPINGS", am);
    }

    private void defaultMessageResourcesConfig(ModuleConfig config)
    {
        String value = null;
        MessageResourcesConfig mrc = config.findMessageResourcesConfig("org.apache.struts.action.MESSAGE");
        if(mrc == null)
        {
            mrc = new MessageResourcesConfig();
            mrc.setKey("org.apache.struts.action.MESSAGE");
            config.addMessageResourcesConfig(mrc);
        }
        value = getServletConfig().getInitParameter("application");
        if(value != null)
            mrc.setParameter(value);
        value = getServletConfig().getInitParameter("factory");
        if(value != null)
            mrc.setFactory(value);
        value = getServletConfig().getInitParameter("null");
        if(value != null)
            if(value.equalsIgnoreCase("true") || value.equalsIgnoreCase("yes"))
                mrc.setNull(true);
            else
                mrc.setNull(false);
    }

    static Class class$(String x0)
    {
        return Class.forName(x0);
        ClassNotFoundException x1;
        x1;
        throw new NoClassDefFoundError(x1.getMessage());
    }

    static 
    {
        log = LogFactory.getLog(class$org$apache$struts$action$ActionServlet != null ? class$org$apache$struts$action$ActionServlet : (class$org$apache$struts$action$ActionServlet = class$("org.apache.struts.action.ActionServlet")));
    }
}