struts2配置静态资源代码详解-eolink官网

struts2配置静态资源代码详解

Struts2框架有两个核心配置文件：struts.xml和Struts2默认属性文件default.properties(在struts2-core-2.3.20.jar中)

default.properties可以通过自己在classpath下写一个struts.properties文件进行定制改写

为什么是struts.properties，这可以看org.apache.struts2.config下的DefaultSettings和PropertiesSettings源码

DefaultSettings.java

public DefaultSettings() {

ArrayList list = new ArrayList();

// stuts.properties, default.properties

try {

list.add(new PropertiesSettings("struts"));

} catch (Exception e) {

log.warn("DefaultSettings: Could not find or error in struts.properties", e);

}

PropertiesSettings.java

public PropertiesSettings(String name) {

URL settingsUrl = ClassLoaderUtil.getResource(name + ".properties", getClass());

if (settingsUrl == null) {

if (LOG.isDebugEnabled()) {

LOG.debug(name + ".properties missing");

}

settings = new LocatableProperties();

return;

}

也可以把你想写在struts.properties的自定义配置写在struts.xml文件下节点中，java培训如果同时都在两个文件配置了,一个相同的项目, 先加载 struts.xml,再加载struts.properties也就是说 struts.properties 是可以覆盖 struts.xml里面的配置的

value="true" />

value="false" />

在strut源码StrutsConstants.class包含了所有可配置项

package org.apache.struts2;

import org.apache.struts2.dispatcher.mapper.CompositeActionMapper;

/**

* This class provides a central location for framework configuration keys

* used to retrieve and store Struts configuration settings.

public final class StrutsConstants {

/** Whether Struts is in development mode or not */

public static final String STRUTS_DEVMODE = "struts.devMode";

/** Whether the localization messages should automatically be reloaded */

public static final String STRUTS_I18N_RELOAD = "struts.i18n.reload";

/** The encoding to use for localization messages */

public static final String STRUTS_I18N_ENCODING = "struts.i18n.encoding";

/** Whether to reload the XML configuration or not */

public static final String STRUTS_CONFIGURATION_XML_RELOAD = "struts.configuration.xml.reload";

/** The URL extension to use to determine if the request is meant for a Struts action */

public static final String STRUTS_ACTION_EXTENSION = "struts.action.extension";

/** Comma separated list of patterns (java.util.regex.Pattern) to be excluded from Struts2-processing */

public static final String STRUTS_ACTION_EXCLUDE_PATTERN = "struts.action.excludePattern";

/** Whether to use the alterative syntax for the tags or not */

public static final String STRUTS_TAG_ALTSYNTAX = "struts.tag.altSyntax";

/** The HTTP port used by Struts URLs */

public static final String STRUTS_URL_HTTP_PORT = "struts.url.http.port";

/** The HTTPS port used by Struts URLs */

public static final String STRUTS_URL_HTTPS_PORT = "struts.url.https.port";

/** The default includeParams method to generate Struts URLs */

public static final String STRUTS_URL_INCLUDEPARAMS = "struts.url.includeParams";

public static final String STRUTS_URL_RENDERER = "struts.urlRenderer";

/** The com.opensymphony.xwork2.ObjectFactory implementation class */

public static final String STRUTS_OBJECTFACTORY = "struts.objectFactory";

public static final String STRUTS_OBJECTFACTORY_ACTIONFACTORY = "struts.objectFactory.actionFactory";

public static final String STRUTS_OBJECTFACTORY_RESULTFACTORY = "struts.objectFactory.resultFactory";

public static final String STRUTS_OBJECTFACTORY_CONVERTERFACTORY = "struts.objectFactory.converterFactorKItyhIjpSy";

public static final String STRUTS_OBJECTFACTORY_INTERCEPTORFACTORY = "struts.objectFactory.interceptorFactory";

public static final String STRUTS_OBJECTFACTORY_VALIDATORFACTORY = "struts.objectFactory.validatorFactory";

public static final String STRUTS_OBJECTFACTORY_UNKNOWNHANDLERFACTORY = "struts.objectFactory.unknownHandlerFactory";

/** The com.opensymphony.xwork2.util.FileManager implementation class */

public static final String STRUTS_FILE_MANAGER_FACTORY = "struts.fileManagerFactory";

/** The com.opensymphony.xwork2.util.fs.FileManager implementation class */

public static final String STRUTS_FILE_MANAGER = "struts.fileManager";

/** The com.opensymphony.xwork2.util.ObjectTypeDeterminer implementation class */

public static final String STRUTS_OBJECTTYPEDETERMINER = "struts.objectTypeDeterminer";

/** The package containing actions that use Rife continuations */

public static final String STRUTS_CONTINUATIONS_PACKAGE = "struts.continuations.package";

/** The org.apache.struts2.config.Configuration implementation class */

public static final String STRUTS_CONFIGURATION = "struts.configuration";

/** The default locale for the Struts application */

public static final String STRUTS_LOCALE = "struts.locale";

/** Whether to use a Servlet request parameter workaround necessary for some versions of WebLogic */

public static final String STRUTS_DISPATCHER_PARAMETERSWORKAROUND = "struts.dispatcher.parametersWorkaround";

/** The org.apache.struts2.views.freemarker.FreemarkerManager implementation class */

public static final String STRUTS_FREEMARKER_MANAGER_CLASSNAME = "struts.freemarker.manager.classname";

@Deprecated

/** Cache Freemarker templates, this cache is managed by struts2,instead of native freemarker cache,set STRUTS_FREEMARKER_MRU_MAX_STRONG_SIZE >0&&STRUTS_FREEMARKER_TEMPLATES_CACHE_UPDATE_DELAY>0*/

public static final String STRUTS_FREEMARKER_TEMPLATES_CACHE = "struts.freemarker.templatesCache";

/** Update freemarker templates cache in seconds*/

public static final String STRUTS_FREEMARKER_TEMPLATES_CACHE_UPDATE_DELAY = "struts.freemarker.templatesCache.updateDelay";

/** Cache model instances at BeanWrapper level */

public static final String STRUTS_FREEMARKER_BEANWRAPPER_CACHE = "struts.freemarker.beanwrapperCache";

/** Maximum strong sizing for MruCacheStorage for freemarker */

public static final String STRUTS_FREEMARKER_MRU_MAX_STRONG_SIZE = "struts.freemarker.mru.max.strong.size";

/** org.apache.struts2.views.velocity.VelocityManager implementation class */

public static final String STRUTS_VELOCITY_MANAGER_CLASSNAME = "struts.velocity.manager.classname";

/** The Velocity configuration file path */

public static final String STRUTS_VELOCITY_CONFIGFILE = "struts.velocity.configfile";

/** The location of the Velocity toolbox */

public static final String STRUTS_VELOCITY_TOOLBOXLOCATION = "struts.velocity.toolboxlocation";

/** List of Velocity context names */

public static final String STRUTS_VELOCITY_CONTEXTS = "struts.velocity.contexts";

/** The directory containing UI templates. All templates must reside in this directory. */

public static final String STRUTS_UI_TEMPLATEDIR = "struts.ui.templateDir";

/** The default UI template theme */

public static final String STRUTS_UI_TKItyhIjpSHEME = "struts.ui.theme";

/** Token to use to indicate start of theme to be expanded. */

public static final String STRUTS_UI_THEME_EXPANSION_TOKEN = "struts.ui.theme.expansion.token";

/** The maximize size of a multipart request (file upload) */

public static final String STRUTS_MULTIPART_MAXSIZE = "struts.multipart.maxSize";

/** The directory to use for storing uploaded files */

public static final String STRUTS_MULTIPART_SAVEDIR = "struts.multipart.saveDir";

/** Declares the buffer size to be used during streaming multipart content to disk. Used only with {@link org.apache.struts2.dispatcher.multipart.JakartaStreamMultiPartRequest} */

public static final String STRUTS_MULTIPART_BUFFERSIZE = "struts.multipart.bufferSize";

/**

* The org.apache.struts2.dispatcher.multipart.MultiPartRequest parser implementation

* for a multipart request (file upload)

public static final String STRUTS_MULTIPART_PARSER = "struts.multipart.parser";

/** How Spring should autowire. Valid values are 'name', 'type', 'auto', and 'constructor' */

public static final String STRUTS_OBJECTFACTORY_SPRING_AUTOWIRE = "struts.objectFactory.spring.autoWire";

/** Whether the autowire strategy chosen by STRUTS_OBJECTFACTORY_SPRING_AUTOWIRE is always respected. Defaults

* to false, which is the legacy behavior that tries to determine the best strategy for the situation.

* @since 2.1.3

public static final String STRUTS_OBJECTFACTORY_SPRING_AUTOWIRE_ALWAYS_RESPECT = "struts.objectFactory.spring.autoWire.alwaysRespect";

/** Whether Spring should use its class cache or not */

public static final String STRUTS_OBJECTFACTORY_SPRING_USE_CLASS_CACHE = "struts.objectFactory.spring.useClassCache";

/** Uses different logic to construct beans, see https://issues.apache.org/jira/browse/WW-4110 */

public static final String STRUTS_OBJECTFACTORY_SPRING_ENABLE_AOP_SUPPORT = "struts.objectFactory.spring.enableAopSupport";

/** Whether or not XSLT templates should not be cached */

public static final String STRUTS_XSLT_NOCACHE = "struts.xslt.nocache";

/** Location of additional configuration properties files to load */

public static final String STRUTS_CUSTOM_PROPERTIES = "struts.custom.properties";

/** Location of additional localization properties files to load */

public static final String STRUTS_CUSTOM_I18N_RESOURCES = "struts.custom.i18n.resources";

/** The org.apache.struts2.dispatcher.mapper.ActionMapper implementation class */

public static final String STRUTS_MAPPER_CLASS = "struts.mapper.class";

/**

* A prefix based action mapper that is capable of delegating to other

* {@link org.apache.struts2.dispatcher.mapper.ActionMapper}s based on the request's prefix

* You can specify different prefixes that will be handled by different mappers

public static final String PREFIX_BASED_MAPPER_CONFIGURATION = "struts.mapper.prefixMapping";

/** Whether the Struts filter should serve static content or not */

public static final String STRUTS_SERVE_STATIC_CONTENT = "struts.serve.static";

/** If static content served by the Struts filter should set browser caching header properties or not */

public static final String STRUTS_SERVE_STATIC_BROWSER_CACHE = "struts.serve.static.browserCache";

/** Allows one to disable dynamic method invocation from the URL */

public static final String STRUTS_ENABLE_DYNAMIC_METHOD_INVOCATION = "struts.enable.DynamicMethodInvocation";

/** Whether slashes in action names are allowed or not */

public static final String STRUTS_ENABLE_SLASHES_IN_ACTION_NAMES = "struts.enable.SlashesInActionNames";

/** Prefix used by {@link CompositeActionMapper} to identify its containing {@link org.apache.struts2.dispatcher.mapper.ActionMapper} class. */

public static final String STRUTS_MAPPER_COMPOSITE = "struts.mapper.composite";

public static final String STRUTS_ACTIONPROXYFACTORY = "struts.actionProxyFactory";

public statichttp:// final String STRUTS_FREEMARKER_WRAPPER_ALT_MAP = "struts.freemarker.wrapper.altMap";

/** The name of the xwork converter implementation */

public static final String STRUTS_XWORKCONVERTER = "struts.xworkConverter";

public static final String STRUTS_ALWAYS_SELECT_FULL_NAMESPACE = "struts.mapper.alwaysSelectFullNamespace";

/** XWork default text provider */

public static final String STRUTS_XWORKTEXTPROVIDER = "struts.xworkTextProvider";

/** The {@link com.opensymphony.xwork2.LocaleProvider} implementation class */

public static final String STRUTS_LOCALE_PROVIDER = "struts.localeProvider";

/** The name of the parameter to create when mapping an id (used by some action mappers) */

public static final String STRUTS_ID_PARAMETER_NAME = "struts.mapper.idParameterName";

/** The name of the parameter to determine whether static method access will be allowed in OGNL expressions or not */

public static final String STRUTS_ALLOW_STATIC_METHOD_ACCESS = "struts.ognl.allowStaticMethodAccess";

/** The com.opensymphony.xwork2.validator.ActionValidatorManager implementation class */

public static final String STRUTS_ACTIONVALIDATORMANAGER = "struts.actionValidatorManager";

/** The {@link com.opensymphony.xwork2.util.ValueStackFactory} implementation class */

public static final String STRUTS_VALUESTACKFACTORY = "struts.valueStackFactory";

/** The {@link com.opensymphony.xwork2.util.reflection.ReflectionProvider} implementation class */

public static final String STRUTS_REFLECTIONPROVIDER = "struts.reflectionProvider";

/** The {@link com.opensymphony.xwork2.util.reflection.ReflectionContextFactory} implementation class */

public static final String STRUTS_REFLECTIONCONTEXTFACTORY = "struts.reflectionContextFactory";

/** The {@link com.opensymphony.xwork2.util.PatternMatcher} implementation class */

public static final String STRUTS_PATTERNMATCHER = "struts.patternMatcher";

/** The {@link org.apache.struts2.dispatcher.StaticContentLoader} implementation class */

public static final String STRUTS_STATIC_CONTENT_LOADER = "struts.staticContentLoader";

/** The {@link com.opensymphony.xwork2.UnknownHandlerManager} implementation class */

public static final String STRUTS_UNKNOWN_HANDLER_MANAGER = "struts.unknownHandlerManager";

/** Throw RuntimeException when a property is not found, or the evaluation of the espression fails*/

public static final String STRUTS_EL_THROW_EXCEPTION = "struts.el.throwExceptionOnFailure";

/** Logs properties that are not found (very verbose) **/

public static final String STRUTS_LOG_MISSING_PROPERTIES = "struts.ognl.logMissingProperties";

/** Enables caching of parsed OGNL expressions **/

public static final String STRUTS_ENABLE_OGNL_EXPRESSION_CACHE = "struts.ognl.enableExpressionCache";

/** Enables evaluation of OGNL expressions **/

public static final String STRUTS_ENABLE_OGNL_EVAL_EXPRESSION = "struts.ognl.enableOGNLEvalExpression";

/** Disables {@link org.apache.struts2.dispatcher.StrutsRequestWrapper} request attribute value stack lookup (jsTL accessibility) **/

public static final String STRUTS_DISABLE_REQUEST_ATTRIBUTE_VALUE_STACK_LOOKUP = "struts.disableRequestAttributeValueStackLookup";

/** The{@link org.apache.struts2.views.util.UrlHelper} implementation class **/

public static final String STRUTS_URL_HELPER = "struts.view.urlHelper";

/** {@link com.opensymphony.xwork2.conversion.impl.XWorkBasicConverter} **/

public static final String STRUTS_CONVERTER_COLLECTION = "struts.converter.collection";

public static final String STRUTS_CONVERTER_ARRAY = "struts.converter.array";

public static final String STRUTS_CONVERTER_DATE = "struts.converter.date";

public static final String STRUTS_CONVERTER_NUMBER = "struts.converter.number";

public static final String STRUTS_CONVERTER_STRING = "struts.converter.string";

/** Enable handling exceptions by Dispatcher - true by default **/

public static final String STRUTS_HANDLE_EXCEPTION = "struts.handle.exception";

public static final String STRUTS_CONVERTER_PROPERTIES_PROCESSOR = "struts.converter.properties.processor";

public static final String STRUTS_CONVERTER_FILE_PROCESSOR = "struts.converter.file.processor";

public static final String STRUTS_CONVERTER_ANNOTATION_PROCESSOR = "struts.converter.annotation.processor";

public static final String STRUTS_CONVERTER_CREATOR = "struts.converter.creator";

public static final String STRUTS_CONVERTER_HOLDER = "struts..converter.holder";

public static final String STRUTS_EXPRESSION_PARSER = "struts.expression.parser";

/** actions names' whitelist **/

public static final String STRUTS_ALLOWED_ACTION_NAMES = "struts.allowed.action.names";

/** enables action: prefix **/

public static final String STRUTS_MAPPER_ACTION_PREFIX_ENABLED = "struts.mapper.action.prefix.enabled";

/** enables access to actions in other namespaces than current with action: prefix **/

public static final String STRUTS_MAPPER_ACTION_PREFIX_CROSSNAMESPACES = "struts.mapper.action.prefix.crossNamespaces";

public static final String DEFAULT_TEMPLATE_TYPE_CONFIG_KEY = "struts.ui.templateSuffix";

/** Allows override default DispatcherErrorHandler **/

public static final String STRUTS_DISPATCHER_ERROR_HANDLER = "struts.dispatcher.errorHandler";

/** Comma delimited set of excluded classes and package names which cannot be accessed via expressions **/

public static final String STRUTS_EXCLUDED_CLASSES = "struts.excludedClasses";

public static final String STRUTS_EXCLUDED_PACKAGE_NAME_PATTERNS = "struts.excludedPackageNamePatterns";

/** Dedicated services to check if passed string is excluded/accepted **/

public static final String STRUTS_EXCLUDED_PATTERNS_CHECKER = "struts.excludedPatterns.checker";

public static final String STRUTS_ACCEPTED_PATTERNS_CHECKER = "struts.acceptedPatterns.checker";

/** Constant is used to override framework's default excluded patterns **/

public static final String STRUTS_OVERRIDE_EXCLUDED_PATTERNS = "struts.override.excludedPatterns";

public static final String STRUTS_OVERRIDE_ACCEPTED_PATTERNS = "struts.override.acceptedPatterns";

public static final String STRUTS_ADDITIONAL_EXCLUDED_PATTERNS = "struts.additional.excludedPatterns";

public static final String STRUTS_ADDITIONAL_ACCEPTED_PATTERNS = "struts.additional.acceptedPatterns";

}

其中

/** Comma separated list of patterns (java.util.regex.Pattern) to be excluded from Struts2-processing */

public static final String STRUTS_ACTION_EXCLUDE_PATTERN = "struts.action.excludePattern";

保存了不由struts2处理的路径,我们在struts.properties或者struts.xml中配置即可.

struts.action.excludePattern=/dwr/.*,/dwr/test/.*

正则表达式，并非URL匹配地址

总结

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