15.5. System Properties in JBossWeb
This section lists the system properties that may be used to modify the default JBossWeb behavior. The system-properties can be set in the JBoss Enterprise Web Application configuration. You must restart it to get them applied to the web sub system.
Following is an example on how to modify the system-properties in JBossWeb
standalone@localhost:9999 /] ./system-property=org.apache.catalina.JSESSIONID:add(value="MYID")
{"outcome" => "success"}
standalone@localhost:9999 /] shutdown
Communication error: Channel closed
Closed connection to localhost:9999
For some properties, you can restart it using a reload command.
Following is an example to restart using a reload command.
[standalone@localhost:9999 /] reload
{
"outcome" => "success",
"response-headers" => {
"operation-requires-reload" => true,
"process-state" => "reload-required"
}
}| Attribute | Description |
|---|---|
| jvmRoute |
Provides a default value for the
jvmRoute attribute. It does not override the automatically generated value used when using ha read with using configuration like standalone-ha.xml
It supports
reload.
|
| org.apache.tomcat.util.buf.StringCache.byte.enabled | If true, the String cache is enabled for ByteChunk. If the value is not specified, the default value of false is used. |
| org.apache.tomcat.util.buf.StringCache.char.enabled | If true, the String cache is enabled for CharChunk. If the value is not specified, the default value of false is used. |
| org.apache.tomcat.util.buf.StringCache.cacheSize | The size of the String cache. If the value is not specified, the default value of 5000 is used. |
| org.apache.tomcat.util.buf.StringCache.maxStringSize | The maximum length of String that will be cached. If the value is not specified, the default value of 128 is used. |
| org.apache.tomcat.util.http.FastHttpDateFormat.CACHE_SIZE | The size of the cache to use parsed and formatted date value. If the value is not specified, the default value of 1000 is used. |
| org.apache.catalina.core.StandardService.DELAY_CONNECTOR_STARTUP | If true, the connector startup is not done automatically. It is useful in embedded mode. |
| org.apache.catalina.connector.Request.SESSION_ID_CHECK | If true, the Servlet container verifies that a session exists in a context with the specified session id before creating a session with that id. |
| org.apache.coyote.USE_CUSTOM_STATUS_MSG_IN_HEADER | If true, custom HTTP status messages are used within HTTP headers. Users must ensure that any such message is ISO-8859-1 encoded, particularly if user provided input is included in the message, to prevent a possible XSS vulnerability. If value is not specified the default value of false is used. |
| org.apache.tomcat.util.http.Parameters.MAX_COUNT | The maximum amount of parameters that can be parsed in a post body. If exceeded, parsing fails using an IllegalStateException. The default value is 512 parameters. |
| org.apache.tomcat.util.http.MimeHeaders.MAX_COUNT |
The maximum amount of headers that can be sent in the HTTP request. If exceeded, parsing will fail using an IllegalStateException. The default value is 128 headers.
|
| org.apache.tomcat.util.net.MAX_THREADS | The maximum number of threads a connector is going to use to process requests. The default value is 32 x Runtime.getRuntime().availableProcessors(). (512 x Runtime.getRuntime().availableProcessors() for the JIO connector) |
| org.apache.coyote.http11.Http11Protocol.MAX_HEADER_SIZE | The maximum size of the HTTP headers, in bytes. If exceeded, parsing will fail using an ArrayOutOfBoundsExceptions. The default value is 8192 bytes. |
| org.apache.coyote.http11.Http11Protocol.COMPRESSION | Allows using simple compression with the HTTP connector. The default value is off, and compression can be enabled using the value on to enable it conditionally, or force to always enable it. |
| org.apache.coyote.http11.Http11Protocol.COMPRESSION_RESTRICTED_UA | User agents regexps that will not receive compressed content. The default value is empty. |
| org.apache.coyote.http11.Http11Protocol.COMPRESSION_MIME_TYPES | Content type prefixes of compressible content. The default value is text/html,text/xml,text/plain. |
| org.apache.coyote.http11.Http11Protocol.COMPRESSION_MIN_SIZE | Minimum size of content that will be compressed. The default value is 2048 bytes. |
| org.apache.coyote.http11.DEFAULT_CONNECTION_TIMEOUT | Default socket timeout. The default value is 60000 ms. |
| org.jboss.as.web.deployment.DELETE_WORK_DIR_ONCONTEXTDESTROY | Use this property to remove .java and .class files to ensure that JSP sources are recompiled. The default value is false. Default socket timeout for keep alive. The default value is -1 ms, which means it will use the default socket timeout. |
| org.apache.tomcat.util.buf.StringCache.trainThreshold | Specifies the number of times toString() must be invoked before activating cache. The default value is 100000. |
| Attribute | Description |
|---|---|
| org.apache.el.parser.COERCE_TO_ZERO | If true, when coercing expressions to numbers "" and null will be coerced to zero as required by the specification. If value is not specified, the default value of true is used. |
| Attribute | Description |
|---|---|
| org.apache.jasper.compiler.Generator.VAR_EXPRESSIONFACTORY | The name of the variable to use for the expression language expression factory. If value is not specified, the default value of _el_expressionfactory is used. |
| org.apache.jasper.compiler.Generator.VAR_INSTANCEMANAGER | The name of the variable to use for the instance manager factory. If value is not specified, the default value of _jsp_instancemanager is used. |
| org.apache.jasper.compiler.Parser.STRICT_QUOTE_ESCAPING | If false, the requirements for escaping quotes in JSP attributes are relaxed so that a missing required quote does not cause an error. If value is not specified, the specification compliant default of true is used. |
| org.apache.jasper.Constants.DEFAULT_TAG_BUFFER_SIZE | Any tag buffer that expands beyond org.apache.jasper.Constants.DEFAULT_TAG_BUFFER_SIZE is destroyed and a new buffer is created of the default size. If value is not specified, the default value of 512 is used. |
| org.apache.jasper.runtime.JspFactoryImpl.USE_POOL | If true, a ThreadLocal PageContext pool is used. If value is not specified, the default value of true is used. |
| org.apache.jasper.runtime.JspFactoryImpl.POOL_SIZE | The size of the ThreadLocal PageContext. If value is not specified, the default value of 8 is used. |
| org.apache.jasper.Constants.JSP_SERVLET_BASE | The base class of the Servlets generated from the JSPs. If value is not specified, the default value of org.apache.jasper.runtime.HttpJspBase is used. |
| org.apache.jasper.Constants.SERVICE_METHOD_NAME | The name of the service method called by the base class. If value is not specified, the default value of _jspService is used. |
| org.apache.jasper.Constants.SERVLET_CLASSPATH | The name of the ServletContext attribute that provides the classpath for the JSP. If value is not specified, the default value of org.apache.catalina.jsp_classpath is used. |
| org.apache.jasper.Constants.JSP_FILE | The name of the request attribute for <jsp-file> element of a servlet definition. If present on a request, this overrides the value returned by request.getServletPath() to select the JSP page to be executed. If value is not specified, the default value of org.apache.catalina.jsp_file is used. |
| org.apache.jasper.Constants.PRECOMPILE | The name of the query parameter that causes the JSP engine to just pregenerate the servlet but not invoke it. If value is not specified, the default value of org.apache.catalina.jsp_precompile is used. |
| org.apache.jasper.Constants.JSP_PACKAGE_NAME | The default package name for compiled jsp pages. If value not specified, the default value of org.apache.jsp is used. |
| org.apache.jasper.Constants.TAG_FILE_PACKAGE_NAME | The default package name for tag handlers generated from tag files. If value is not specified, the default value of org.apache.jsp.tag is used. |
| org.apache.jasper.Constants.TEMP_VARIABLE_NAME_PREFIX | Prefix to use for generated temporary variable names. If value is not specified, the default value of _jspx_temp is used. |
| org.apache.jasper.Constants.USE_INSTANCE_MANAGER_FOR_TAGS | If true, the instance manager is used to obtain tag handler instances. If value is not specified, true is used. |
| org.apache.jasper.Constants.INJECT_TAGS | If true, annotations specified in tags will be processed and injected. This can have a performance impact when using simple tags, or if tag pooling is disabled. If value is not specified, false is used. |
| Attribute | Description |
|---|---|
| org.apache.catalina.connector.RECYCLE_FACADES | If this is true or if a security manager is in use a new facade object is created for each request. If value is not specified, the default value of false is used. |
| org.apache.catalina.connector.CoyoteAdapter.ALLOW_BACKSLASH | If this is true the '\' character is permitted as a path delimiter. If value is not specified, the default value of false is used. |
| org.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH | If this is true '%2F' and '%5C' is permitted as path delimiters. If value is not specified, the default value of false is used. |
| Attribute | Description |
|---|---|
| org.apache.catalina.STRICT_SERVLET_COMPLIANCE |
If value is not specified, true is used. If this is true the following actions will occur:
|
| org.apache.catalina.core.StandardWrapperValve.SERVLET_STATS | If true or if org.apache.catalina.STRICT_SERVLET_COMPLIANCE is true, the wrapper will collect the JSR-77 statistics for individual servlets. If value is not specified, the default value of false is used. |
| org.apache.catalina.session.StandardSession.ACTIVITY_CHECK | If this is true or if org.apache.catalina.STRICT_SERVLET_COMPLIANCE is true Tomcat tracks the number of active requests for each session. When determining if a session is valid, any session with at least one active request is always be considered valid. If value is not specified, the default value of false is used. |
