Example usage for org.springframework.expression Expression getExpressionString

List of usage examples for org.springframework.expression Expression getExpressionString

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Introduction

In this page you can find the example usage for org.springframework.expression Expression getExpressionString.

Prototype

String getExpressionString();

Source Link

Document

Return the original string used to create this expression (unmodified).

Usage

From source file:de.itsvs.cwtrpc.security.DefaultRpcAuthenticationFailureHandler.java

@Override
public Exception lookupRemoteExceptionFor(HttpServletRequest request, AuthenticationException exception) {
    Expression remoteExceptionExpression = null;
    Exception remoteException = null;

    if (getExceptionExpressionMappings() != null) {
        final Class<? extends AuthenticationException> exceptionClass;

        exceptionClass = exception.getClass();
        for (Map.Entry<Class<? extends AuthenticationException>, Expression> entry : getExceptionExpressionMappings()
                .entrySet()) {//www . j  ava  2 s . c o m
            if (entry.getKey().isAssignableFrom(exceptionClass)) {
                if (log.isDebugEnabled()) {
                    log.debug("Exception mapping for class " + exceptionClass.getName() + " is: "
                            + entry.getValue().getExpressionString());
                }
                remoteExceptionExpression = entry.getValue();
                break;
            }
        }
    }
    if (remoteExceptionExpression == null) {
        if (log.isDebugEnabled()) {
            log.debug("Exception mapping does not contain mapping for class " + exception.getClass().getName()
                    + ", using default: " + getDefaultExceptionExpression().getExpressionString());
        }
        remoteExceptionExpression = getDefaultExceptionExpression();
    }

    try {
        remoteException = remoteExceptionExpression.getValue(createEvaluationContext(request, exception),
                Exception.class);
    } catch (EvaluationException e) {
        log.error("Could not create remote exception from expression: "
                + remoteExceptionExpression.getExpressionString(), e);
        remoteException = null;
    }
    return remoteException;
}

From source file:org.craftercms.security.impl.processors.UrlAccessRestrictionCheckingProcessor.java

/**
 * Matches the request URL against the keys of the {@code restriction} map, which are ANT-style path patterns. If
 * a key matches, the/*  w  w w .jav a 2 s  .c om*/
 * value is interpreted as a Spring EL expression, the expression is executed using an {@link
 * AccessRestrictionExpressionRoot}. with
 * the user profile, as root object, and if it returns true, the processor chain is continued,
 * if not an  {@link AccessDeniedException}
 * is thrown.
 *
 * @param context        the context which holds the current request and other security info pertinent to the
 *                       request
 * @param processorChain the processor chain, used to call the next processor
 * @throws Exception
 */
public void processRequest(RequestContext context, RequestSecurityProcessorChain processorChain)
        throws Exception {
    if (MapUtils.isNotEmpty(urlRestrictions)) {
        if (logger.isDebugEnabled()) {
            logger.debug("Checking URL access restrictions");
        }

        if (context.getAuthenticationToken() == null) {
            throw new IllegalArgumentException("Request context doesn't contain an authentication token");
        }
        if (context.getAuthenticationToken().getProfile() == null) {
            throw new IllegalArgumentException(
                    "Authentication token of request context doesn't contain a user " + "profile");
        }

        String requestUrl = getRequestUrl(context.getRequest());
        UserProfile profile = context.getAuthenticationToken().getProfile();

        for (Map.Entry<String, Expression> entry : urlRestrictions.entrySet()) {
            String urlPattern = entry.getKey();
            Expression expression = entry.getValue();

            if (pathMatcher.match(urlPattern, requestUrl)) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Checking restriction ['" + requestUrl + "' => "
                            + expression.getExpressionString() + "] for user " + profile.getUserName());
                }

                if (isAccessAllowed(profile, expression)) {
                    if (logger.isDebugEnabled()) {
                        logger.debug("Restriction ['" + requestUrl + "' => " + expression.getExpressionString()
                                + "] evaluated to " + "true for user " + profile.getUserName()
                                + ": access allowed");
                    }

                    break;
                } else {
                    throw new AccessDeniedException("Restriction ['" + requestUrl + "' => "
                            + expression.getExpressionString() + "] evaluated to false for user "
                            + profile.getUserName() + ": access denied");
                }
            }
        }
    }

    processorChain.processRequest(context);
}

From source file:org.craftercms.security.impl.processors.UrlAccessRestrictionCheckingProcessor.java

/**
 * Executes the Spring EL expression using an {@link AccessRestrictionExpressionRoot}, with the user profile,
 * as root object. The/*from  w ww  . j  a va  2  s .  co m*/
 * expression should return a boolean: true if access is allowed, false otherwise.
 */
protected boolean isAccessAllowed(UserProfile profile, Expression expression) {
    Object value = expression.getValue(createExpressionRoot(profile));
    if (!(value instanceof Boolean)) {
        throw new CrafterSecurityException(
                "Expression " + expression.getExpressionString() + " should return a " + "boolean value");
    }

    return (Boolean) value;
}

From source file:org.craftercms.security.processors.impl.UrlAccessRestrictionCheckingProcessor.java

/**
 * Matches the request URL against the keys of the {@code restriction} map, which are ANT-style path patterns. If
 * a key matches, the value is interpreted as a Spring EL expression, the expression is executed, and if it returns
 * true, the processor chain is continued, if not an {@link AccessDeniedException} is thrown.
 *
 * @param context        the context which holds the current request and response
 * @param processorChain the processor chain, used to call the next processor
 *///from  w  ww  .  j ava2s. co m
public void processRequest(RequestContext context, RequestSecurityProcessorChain processorChain)
        throws Exception {
    Map<String, Expression> urlRestrictions = getUrlRestrictions();

    if (MapUtils.isNotEmpty(urlRestrictions)) {
        HttpServletRequest request = context.getRequest();
        String requestUrl = getRequestUrl(context.getRequest());

        logger.debug("Checking access restrictions for URL {}", requestUrl);

        for (Map.Entry<String, Expression> entry : urlRestrictions.entrySet()) {
            String urlPattern = entry.getKey();
            Expression expression = entry.getValue();

            if (pathMatcher.match(urlPattern, requestUrl)) {
                logger.debug("Checking restriction [{} => {}]", requestUrl, expression.getExpressionString());

                if (isAccessAllowed(request, expression)) {
                    logger.debug("Restriction [{}' => {}] evaluated to true for user: access allowed",
                            requestUrl, expression.getExpressionString());

                    break;
                } else {
                    throw new AccessDeniedException(
                            "Restriction ['" + requestUrl + "' => " + expression.getExpressionString()
                                    + "] evaluated to false " + "for user: access denied");
                }
            }
        }
    }

    processorChain.processRequest(context);
}

From source file:org.springframework.batch.integration.samples.payments.util.SpringIntegrationUtils.java

/**
 * Helper Method to dynamically determine and display input and output
 * directories as defined in the Spring Integration context.
 *
 * @param context Spring Application Context
 *//*from  w  w w  . j a  v a2s.c o  m*/
public static void displayDirectories(final ApplicationContext context) {

    final Map<String, FileReadingMessageSource> fileReadingMessageSources = context
            .getBeansOfType(FileReadingMessageSource.class);
    final List<String> inputDirectories = new ArrayList<String>();

    for (final FileReadingMessageSource messageHandler : fileReadingMessageSources.values()) {
        final File inDir = (File) new DirectFieldAccessor(messageHandler).getPropertyValue("directory");
        inputDirectories.add(inDir.getAbsolutePath());
    }

    final Map<String, FileWritingMessageHandler> fileWritingMessageHandlers = context
            .getBeansOfType(FileWritingMessageHandler.class);
    final List<String> outputDirectories = new ArrayList<String>();

    for (final FileWritingMessageHandler messageHandler : fileWritingMessageHandlers.values()) {
        final Expression outDir = (Expression) new DirectFieldAccessor(messageHandler)
                .getPropertyValue("destinationDirectoryExpression");
        outputDirectories.add(outDir.getExpressionString());
    }

    final StringBuilder stringBuilder = new StringBuilder();

    for (final String inputDirectory : inputDirectories) {
        stringBuilder.append("\n    Input directory is : '" + inputDirectory + "'");
    }

    for (final String outputDirectory : outputDirectories) {
        stringBuilder.append("\n    Output directory is: '" + outputDirectory + "'");
    }

    stringBuilder.append("\n\n=========================================================");

    logger.info(stringBuilder.toString());

}

From source file:org.springframework.cloud.stream.binder.ExpressionSerializer.java

@Override
public void serialize(Expression expression, JsonGenerator jsonGenerator, SerializerProvider serializerProvider)
        throws IOException {
    if (expression != null) {
        jsonGenerator.writeString(expression.getExpressionString());
    }/* www  .j av a 2 s . com*/
}

From source file:org.springframework.integration.handler.support.MessagingMethodInvokerHelper.java

@SuppressWarnings("unchecked")
private T invokeHandlerMethod(HandlerMethod handlerMethod, ParametersWrapper parameters) throws Exception {
    try {/*from   w w w .  j av  a 2s.  co m*/
        return (T) handlerMethod.invoke(parameters);
    } catch (MethodArgumentResolutionException | MessageConversionException | IllegalStateException e) {
        if (e instanceof MessageConversionException) {
            if (e.getCause() instanceof ConversionFailedException
                    && !(e.getCause().getCause() instanceof ConverterNotFoundException)) {
                throw e;
            }
        } else if (e instanceof IllegalStateException) {
            if (!(e.getCause() instanceof IllegalArgumentException)
                    || !e.getStackTrace()[0].getClassName().equals(InvocableHandlerMethod.class.getName())
                    || (!"argument type mismatch".equals(e.getCause().getMessage()) &&
                    // JVM generates GeneratedMethodAccessor### after several calls with less error checking
                            !e.getCause().getMessage().startsWith("java.lang.ClassCastException@"))) {
                throw e;
            }
        }

        Expression expression = handlerMethod.expression;

        if (++handlerMethod.failedAttempts >= FAILED_ATTEMPTS_THRESHOLD) {
            handlerMethod.spelOnly = true;
            if (logger.isInfoEnabled()) {
                logger.info("Failed to invoke [ " + handlerMethod.invocableHandlerMethod
                        + "] with provided arguments [ " + parameters + " ]. \n"
                        + "Falling back to SpEL invocation for expression [ " + expression.getExpressionString()
                        + " ]");
            }
        }

        return invokeExpression(expression, parameters);
    }
}

From source file:org.springframework.integration.samples.zip.SpringIntegrationUtils.java

/**
 * Helper Method to dynamically determine and display input and output
 * directories as defined in the Spring Integration context.
 *
 * @param context Spring Application Context
 *//*from   w w  w  . ja  v  a  2  s.  c o m*/
public static void displayDirectories(final ApplicationContext context) {

    final Map<String, FileReadingMessageSource> fileReadingMessageSources = context
            .getBeansOfType(FileReadingMessageSource.class);

    final List<String> inputDirectories = new ArrayList<String>();

    for (FileReadingMessageSource source : fileReadingMessageSources.values()) {
        final File inDir = (File) new DirectFieldAccessor(source).getPropertyValue("directory");
        inputDirectories.add(inDir.getAbsolutePath());
    }

    final Map<String, FileWritingMessageHandler> fileWritingMessageHandlers = context
            .getBeansOfType(FileWritingMessageHandler.class);

    final List<String> outputDirectories = new ArrayList<String>();

    for (final FileWritingMessageHandler messageHandler : fileWritingMessageHandlers.values()) {
        final Expression outDir = (Expression) new DirectFieldAccessor(messageHandler)
                .getPropertyValue("destinationDirectoryExpression");
        outputDirectories.add(outDir.getExpressionString());
    }

    final StringBuilder stringBuilder = new StringBuilder();

    stringBuilder.append("\n=========================================================");
    stringBuilder.append("\n");

    for (final String inputDirectory : inputDirectories) {
        stringBuilder.append("\n    Intput directory is: '" + inputDirectory + "'");
    }

    for (final String outputDirectory : outputDirectories) {
        stringBuilder.append("\n    Output directory is: '" + outputDirectory + "'");
    }

    stringBuilder.append("\n\n=========================================================");

    logger.info(stringBuilder.toString());

}

From source file:org.springframework.integration.util.AbstractExpressionEvaluator.java

protected <T> T evaluateExpression(Expression expression, Message<?> message, Class<T> expectedType) {
    try {// ww w  . j  av  a 2  s .co m
        return evaluateExpression(expression, (Object) message, expectedType);
    } catch (EvaluationException e) {
        Throwable cause = e.getCause();
        if (this.logger.isDebugEnabled()) {
            logger.debug("SpEL Expression evaluation failed with EvaluationException.", e);
        }
        throw new MessageHandlingException(message,
                "Expression evaluation failed: " + expression.getExpressionString(), cause == null ? e : cause);
    } catch (Exception e) {
        if (this.logger.isDebugEnabled()) {
            logger.debug("SpEL Expression evaluation failed with Exception." + e);
        }
        throw new MessageHandlingException(message,
                "Expression evaluation failed: " + expression.getExpressionString(), e);
    }
}

From source file:org.springframework.integration.xml.transformer.XsltPayloadTransformer.java

private Transformer buildTransformer(Message<?> message) throws TransformerException {
    // process individual mappings
    Transformer transformer = this.templates.newTransformer();
    if (this.xslParameterMappings != null) {
        for (String parameterName : this.xslParameterMappings.keySet()) {
            Expression expression = this.xslParameterMappings.get(parameterName);
            try {
                Object value = expression.getValue(this.evaluationContext, message);
                transformer.setParameter(parameterName, value);
            } catch (Exception e) {
                if (logger.isWarnEnabled()) {
                    logger.warn("Evaluation of header expression '" + expression.getExpressionString()
                            + "' failed. The XSLT parameter '" + parameterName + "' will be skipped.");
                }/*from   w w  w  .j  a v  a2  s . c  o m*/
            }
        }
    }
    // process xslt-parameter-headers
    MessageHeaders headers = message.getHeaders();
    if (!ObjectUtils.isEmpty(this.xsltParamHeaders)) {
        for (String headerName : headers.keySet()) {
            if (PatternMatchUtils.simpleMatch(this.xsltParamHeaders, headerName)) {
                transformer.setParameter(headerName, headers.get(headerName));
            }
        }
    }
    return transformer;
}