Struts2 访问web元素

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1、struts.xml

<struts> <constant name="struts.devMode" value="false" />  <constant name="struts.enable.DynamicMethodInvocation" value="true" /> <constant name="struts.i18n.encoding" value="utf-8"></constant> <package name="login"  namespace="/login" extends="struts-default">                         <action name="login*" class="com.wxh.action.LoginActon{1}" >            <result >/useraddsuccess.jsp</result>                    </action>           </package>     </struts>

2、index.jsp

<body>取得request,session,application的引用;<br/><form name="f" action="" method="post">用户名：<input type="text" name="name"/>密码：<input type="text" name="password"/><br/><input type="button" value="submit1" onclick="javascript:document,f,action='login/login1';document.f.submit();"/><input type="button" value="submit2" onclick="javascript:document,f,action='login/login2';document.f.submit();"/><input type="button" value="submit3" onclick="javascript:document,f,action='login/login3';document.f.submit();"/><input type="button" value="submit4" onclick="javascript:document,f,action='login/login4';document.f.submit();"/></form></body>

3、useraddsuccess.jsp

<pre name="code" class="html"><%@taglib uri="/struts-tags" prefix="s"%>

<body>user login success!<br/><s:property value="#request.r1"/> | <%=request.getAttribute("r1") %><br/><s:property value="#session.s1"/> | <%=session.getAttribute("s1") %><br/><s:property value="#application.a1"/> | <%=application.getAttribute("a1") %><br/></body>

4、LoginAction1.java

package com.wxh.action;import java.util.Map; import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;public class LoginActon1 extends ActionSupport {private Map request;private Map session;private Map application;public LoginActon1(){request=(Map)ActionContext.getContext().get("request");session=ActionContext.getContext().getSession();application=ActionContext.getContext().getApplication();}public String execute(){request.put("r1", "r1");session.put("s1","s1");application.put("a1", "a1");return SUCCESS;}}

LoginAction2.java

package com.wxh.action;import java.util.Map; import org.apache.struts2.interceptor.ApplicationAware;import org.apache.struts2.interceptor.RequestAware;import org.apache.struts2.interceptor.SessionAware;import com.opensymphony.xwork2.ActionSupport;public class LoginActon2 extends ActionSupport implements RequestAware,SessionAware,ApplicationAware{/** *  */private static final long serialVersionUID = 1L;private Map<String,Object>request;private Map<String,Object>session;private Map<String,Object>application;public String execute(){request.put("r1", "r1");session.put("s1","s1");application.put("a1", "a1");return SUCCESS;}@Overridepublic void setApplication(Map<String, Object> application) {// TODO Auto-generated method stubthis.application=application;}@Overridepublic void setSession(Map<String, Object> session) {// TODO Auto-generated method stubthis.session=session;}@Overridepublic void setRequest(Map<String, Object> request) {// TODO Auto-generated method stubthis.request=request;}}

LoginAction3.java

package com.wxh.action;import javax.servlet.ServletContext;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import org.apache.struts2.ServletActionContext;import com.opensymphony.xwork2.ActionSupport;public class LoginActon3 extends ActionSupport{private HttpSession session;private HttpServletRequest request;private ServletContext application;public LoginActon3(){request=ServletActionContext.getRequest();session=request.getSession();application=session.getServletContext();}public String execute(){request.setAttribute("r1", "r1");session.setAttribute("s1","s1");application.setAttribute("a1", "a1");return SUCCESS;}}

LoginAction4.java

package com.wxh.action;import javax.servlet.ServletContext;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import org.apache.struts2.interceptor.ServletRequestAware;import com.opensymphony.xwork2.ActionSupport;public class LoginActon4 extends ActionSupport implements ServletRequestAware{private HttpSession session;private HttpServletRequest request;private ServletContext application;public String execute(){request.setAttribute("r1", "r1");session.setAttribute("s1","s1");application.setAttribute("a1", "a1");return SUCCESS;}@Overridepublic void setServletRequest(HttpServletRequest request) {// TODO Auto-generated method stubthis.request=request;this.session=request.getSession();this.application=session.getServletContext();}}

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