This article mainly introduces the configuration and simple cases of java Struts2. Friends who need it can refer to the configuration and simple cases of
Struts2:
1. Create a dynamic web project (let it automatically generate the web.xml file when creating)
2. Introduce relevant jar packages
3. Configure in web.xml
(The first file loaded after starting the tomcat server is web.xml)
Add in the configuration Filter:
<filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
4. Create the core file of struts (struts.xml) and create it in the Java Resources-src file directory. The content is:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> </struts>
5. Also create an Action class in the Java Resources-src file directory, inherit from ActionSupport , and override the execute method in the parent class:
public class HelloWorldAction extends ActionSupport {
@Override
public String execute() throws Exception {
System.out.println("执行Action");
return SUCCESS;
}
}6. Add in the
<struts> <package name="default" namespace="/" extends="struts-default"> <action name="helloworld" class="default package.HelloWorldAction"> <result>/result.jsp</result> </action> </package> </struts>
7. Create View (Create result.jsp in the WebRoot directory):
<body> This is result.jsp! </body>
8.DebugRun
【Related recommendations 】
1. Special recommendation: "php Programmer Toolbox" V0.1 version download
The above is the detailed content of Detailed explanation of examples of Struts2 configuration in java. For more information, please follow other related articles on the PHP Chinese website!
How does the JVM handle differences in operating system APIs?Apr 27, 2025 am 12:18 AMJVM handles operating system API differences through JavaNativeInterface (JNI) and Java standard library: 1. JNI allows Java code to call local code and directly interact with the operating system API. 2. The Java standard library provides a unified API, which is internally mapped to different operating system APIs to ensure that the code runs across platforms.
How does the modularity introduced in Java 9 impact platform independence?Apr 27, 2025 am 12:15 AMmodularitydoesnotdirectlyaffectJava'splatformindependence.Java'splatformindependenceismaintainedbytheJVM,butmodularityinfluencesapplicationstructureandmanagement,indirectlyimpactingplatformindependence.1)Deploymentanddistributionbecomemoreefficientwi
What is bytecode, and how does it relate to Java's platform independence?Apr 27, 2025 am 12:06 AMBytecodeinJavaistheintermediaterepresentationthatenablesplatformindependence.1)Javacodeiscompiledintobytecodestoredin.classfiles.2)TheJVMinterpretsorcompilesthisbytecodeintomachinecodeatruntime,allowingthesamebytecodetorunonanydevicewithaJVM,thusfulf
Why is Java considered a platform-independent language?Apr 27, 2025 am 12:03 AMJavaachievesplatformindependencethroughtheJavaVirtualMachine(JVM),whichexecutesbytecodeonanydevicewithaJVM.1)Javacodeiscompiledintobytecode.2)TheJVMinterpretsandexecutesthisbytecodeintomachine-specificinstructions,allowingthesamecodetorunondifferentp
How can graphical user interfaces (GUIs) present challenges for platform independence in Java?Apr 27, 2025 am 12:02 AMPlatform independence in JavaGUI development faces challenges, but can be dealt with by using Swing, JavaFX, unifying appearance, performance optimization, third-party libraries and cross-platform testing. JavaGUI development relies on AWT and Swing, which aims to provide cross-platform consistency, but the actual effect varies from operating system to operating system. Solutions include: 1) using Swing and JavaFX as GUI toolkits; 2) Unify the appearance through UIManager.setLookAndFeel(); 3) Optimize performance to suit different platforms; 4) using third-party libraries such as ApachePivot or SWT; 5) conduct cross-platform testing to ensure consistency.
What aspects of Java development are platform-dependent?Apr 26, 2025 am 12:19 AMJavadevelopmentisnotentirelyplatform-independentduetoseveralfactors.1)JVMvariationsaffectperformanceandbehavioracrossdifferentOS.2)NativelibrariesviaJNIintroduceplatform-specificissues.3)Filepathsandsystempropertiesdifferbetweenplatforms.4)GUIapplica
Are there performance differences when running Java code on different platforms? Why?Apr 26, 2025 am 12:15 AMJava code will have performance differences when running on different platforms. 1) The implementation and optimization strategies of JVM are different, such as OracleJDK and OpenJDK. 2) The characteristics of the operating system, such as memory management and thread scheduling, will also affect performance. 3) Performance can be improved by selecting the appropriate JVM, adjusting JVM parameters and code optimization.
What are some limitations of Java's platform independence?Apr 26, 2025 am 12:10 AMJava'splatformindependencehaslimitationsincludingperformanceoverhead,versioncompatibilityissues,challengeswithnativelibraryintegration,platform-specificfeatures,andJVMinstallation/maintenance.Thesefactorscomplicatethe"writeonce,runanywhere"
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
Dreamweaver CS6
Visual web development tools
VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft
Atom editor mac version download
The most popular open source editor
Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
