struts2配置静态资源代码详解

这篇文章主要介绍了struts2配置静态资源的相关内容,文中涉及了具体代码介绍,需要的朋友可以参考下。

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

 

 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.converterFactory"; 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_THEME = "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 static 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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