此係列博文基於同一個項目已上傳至github 傳送門html
JavaWeb_(Struts2框架)Struts建立Action的三種方式 傳送門java
JavaWeb_(Struts2框架)struts.xml核心配置、動態方法調用、結果集的處理 傳送門git
JavaWeb_(Struts2框架)Log4j的配置以及解決中文亂碼 傳送門github
JavaWeb_(Struts2框架)參數傳遞之接收參數與傳遞參數 傳送門web
JavaWeb_(Struts2框架)Ognl小案例查詢帖子 傳送門apache
JavaWeb_(Struts2框架)Action中struts-default下result的各類轉發類型 傳送門框架
JavaWeb_(Struts2框架)攔截器interceptor 傳送門dom
第一種DefaultAction什麼都沒有幹jsp
第二種實現了Action接口ide
第三種繼承了ActionSupport類【經常使用】
目錄結構
package com.Gary.web; public class DefaultAction { public String execute() { System.err.println("這是一個普通的action"); return null; } }
package com.Gary.web; import com.opensymphony.xwork2.Action; class ImplAction implements Action{ @Override public String execute() throws Exception { System.out.println("這是實現了Action接口的action"); return null; } }
package com.Gary.web; import org.apache.struts2.ServletActionContext; import com.Gary.domain.User; import com.Gary.service.UserService; import com.opensymphony.xwork2.ActionSupport; import com.opensymphony.xwork2.ModelDriven; public class UserAction extends ActionSupport implements ModelDriven<User>{ public User user = new User(); public String execute() throws Exception { System.err.println("我已經運行了"); UserService userService = new UserService(); boolean success = userService.findUser(user); if(success) { return "success"; }else{ ServletActionContext.getRequest().setAttribute("error", "用戶名或密碼錯誤!!!"); return "error"; } } @Override public User getModel() { // TODO Auto-generated method stub return user; } }
配置struts.xml
<struts> <!-- name:配置包名 --> <package name="MyPackage" namespace="/" extends="struts-default"> <action name="LoginAction" class="com.Gary.web.UserAction" method="execute"> <!-- 默認爲轉發 redirect設置爲重定向--> <result name="success" type="redirect">/index.html</result> <result name="error">/login.jsp</result> </action> <action name="LoginActionDefault" class="com.Gary.web.DefaultAction" method="execute"> </action> <action name="LoginActionImpl" class="com.Gary.web.ImplAction" method="execute"></action> </package> </struts>
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN" "http://struts.apache.org/dtds/struts-2.5.dtd"> <struts> <!-- name:配置包名 --> <package name="MyPackage" namespace="/" extends="struts-default"> <action name="LoginAction" class="com.Gary.web.UserAction" method="execute"> <!-- 默認爲轉發 redirect設置爲重定向--> <result name="success" type="redirect">/index.html</result> <result name="error">/login.jsp</result> </action> <action name="LoginActionDefault" class="com.Gary.web.DefaultAction" method="execute"> </action> <action name="LoginActionImpl" class="com.Gary.web.ImplAction" method="execute"></action> </package> </struts>