Struts2 提供兩種形式的配置，一種是傳統的struts.xml文件配置方式，另外一種就是Annotations 方式，使用Annotations 方式就不需要在寫struts.xml文件，相當於零配置。至於如何使用Annotations 方式，下面我以例子形式講述：
首先導入下面的Jar文件到你的項目中WebRoot/WEB-INF/lib目錄
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struts2-convention-plugin-x.y.z.jar
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asm-x.y.jar
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antlr-x.y.z.jar
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commons-fileupload-x.y.z.jar
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commons-io-x.y.z.jar
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commons-lang-x.y.jar
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commons-logging-x.y.z.jar
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commons-logging-api-x.y.jar
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freemarker-x.y.z.jar
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javassist-.xy.z.GA
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ognl-x.y.z.jar
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struts2-core-x.y.z.jar
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xwork-core.x.y.z.jar
創建主頁 index.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <%@ taglib prefix="s" uri="/struts-tags"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <title>Employee Form</title> </head> <body> <s:form action="empinfo" method="post"> <s:textfield name="name" label="Name" size="20" /> <s:textfield name="age" label="Age" size="20" /> <s:submit name="submit" label="Submit" align="center" /> </s:form> </body> </html>創建視圖 success.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <%@ taglib prefix="s" uri="/struts-tags"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <title>Success</title> </head> <body> Employee Information is captured successfully. </body> </html>創建Action Employee.java
import com.opensymphony.xwork2.ActionSupport; import org.apache.struts2.convention.annotation.Action; import org.apache.struts2.convention.annotation.Result; import org.apache.struts2.convention.annotation.Results; import com.opensymphony.xwork2.validator.annotations.*; @Results({ @Result(name="success", location="/success.jsp"), @Result(name="input", location="/index.jsp") }) public class Employee extends ActionSupport{ private String name; private int age; @Action(value="/empinfo") public String execute() { return SUCCESS; } @RequiredFieldValidator( message = "The name is required" ) public String getName() { return name; } public void setName(String name) { this.name = name; } @IntRangeFieldValidator(message = "Age must be in between 28 and 65", min = "29", max = "65") public int getAge() { return age; } public void setAge(int age) { this.age = age; } }配置文件 web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>Struts 2</display-name> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <filter> <filter-name>struts2</filter-name> <filter-class> org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter </filter-class> <init-param> <param-name>struts.devMode</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>