Struts2 Action访问web元素的四种方式
2014-02-13 14:06
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1: Map IoC 方式<最常用的方式>
2: Map 依赖容器 方式:
原文链接:http://www.blogjava.net/yunjieyang/archive/2010/07/02/325023.html
package edu.uestc.test.action; import java.util.Map; import org.apache.struts2.interceptor.*; import com.opensymphony.xwork2.ActionSupport; public class UserAction1 extends ActionSupport implements RequestAware,SessionAware,ApplicationAware { private Map<String, Object> request; private Map<String, Object> session; private Map<String, Object> application; public String add(){ request.put("r1", "r1"); session.put("s1", "s1"); application.put("a1", "a1"); return "success"; } @Override public void setRequest(Map<String, Object> request) { this.request=request; } @Override public void setSession(Map<String, Object> session) { this.session=session; } @Override public void setApplication(Map<String, Object> application) { this.application=application; } }
2: Map 依赖容器 方式:
package com.action; import java.util.Map; import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.ActionSupport; public class UserAction2 extends ActionSupport { private Map<String, Object> request; private Map<String, Object> session; private Map<String, Object> application; public UserAction2() { ActionContext context = ActionContext.getContext(); request=(Map<String, Object>)context.get("request"); session=context.getSession(); application=context.getApplication(); } public String add(){ request.put("r2", "r2"); session.put("s2", "s2"); application.put("a2", "a2"); return "success"; } }3: Servlet IoC 方式:
package com.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 UserAction3 extends ActionSupport implements ServletRequestAware { private HttpServletRequest request; private HttpSession session; private ServletContext application; public String add() { request.setAttribute("r3", "r3"); session.setAttribute("s3", "s3"); application.setAttribute("a3", "a3"); return "success"; } public void setServletRequest(HttpServletRequest request) { this.request=request; this.session=request.getSession(); this.application=session.getServletContext(); } }4: Servlet 依赖容器 方式:
package edu.uestc.test.action; import javax.servlet.ServletContext; import javax.servlet.http.*; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; public class UserAction4 extends ActionSupport { private HttpServletRequest request; private HttpSession session; private ServletContext application; public UserAction4() { request = ServletActionContext.getRequest(); session=request.getSession(); application=session.getServletContext(); } public String add(){ request.setAttribute("r4", "r4"); session.setAttribute("s4", "s4"); application.setAttribute("a4", "a4"); return "success"; } }
原文链接:http://www.blogjava.net/yunjieyang/archive/2010/07/02/325023.html
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