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Prepare the Certificate Keystore: Tomcat currently operates only on JKS, PKCS11 or PKCS12 format keystores. The JKS format is Java's standard 'Java KeyStore' format, and is the format created by the keytool command-line utility. This tool is included in the JDK. The PKCS12 format is an internet standard, and can be manipulated via (among other things) OpenSSL and Microsoft's Key-Manager. TomEE version 7.0.3 and later (Tomcat 8.5.7 and later) returns an HTTP 400 response (bad request) for raw (unencoded) URLs with special characters. The server response appears as a blank page to the end-user. Apache TomEE is a lightweight, yet powerful, JavaEE Application server with feature rich tooling. It is the Java Enterprise Edition of Apache Tomcat (Tomcat + Java EE = TomEE) and currently is a JakartaEE (formerly JavaEE) and Microprofile compliant application server. Developer Quick Start. Managing Tomcat. For security, access to the manager webapp is. Tomcat includes a series of standard resource factories that can provide services to your web applications, but give you configuration flexibility (via the element) without modifying the web application or the deployment descriptor. Each subsection below details the configuration and usage of the standard resource factories.

If Tomcat is unable to identify the appropriate resource factory and/oradditional configuration information is required, additional Tomcat specificconfiguration must be specified before Tomcat can create the resource.Tomcat specific resource configuration is entered inthe <Context> elements thatcan be specified in either $CATALINA_BASE/conf/server.xml or,preferably, the per-web-application context XML file(META-INF/context.xml).

Tomcat specific resource configuration is performed using the followingelements in the <Context>element:

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  • <Environment> - Configure names and values for scalar environment entries that will be exposed to the web application through the JNDI InitialContext (equivalent to the inclusion of an <env-entry> element in the web application deployment descriptor).
  • <Resource> - Configure the name and data type of a resource made available to the application (equivalent to the inclusion of a <resource-ref> element in the web application deployment descriptor).
  • <ResourceLink> - Add a link to a resource defined in the global JNDI context. Use resource links to give a web application access to a resource defined in the <GlobalNamingResources> child element of the <Server> element.
  • <Transaction> - Add a resource factory for instantiating the UserTransaction object instance that is available at java:comp/UserTransaction.

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Any number of these elements may be nested inside a<Context> element and willbe associated only with that particular web application.

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If a resource has been defined in a<Context> element it is notnecessary for that resource to be defined in /WEB-INF/web.xml.However, it is recommended to keep the entry in /WEB-INF/web.xmlto document the resource requirements for the web application.

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Where the same resource name has been defined for a<env-entry> element included in the web applicationdeployment descriptor (/WEB-INF/web.xml) and in an<Environment> element as part of the<Context> element for theweb application, the values in the deployment descriptor will take precedenceonly if allowed by the corresponding<Environment> element (by setting the overrideattribute to 'true').