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Struts2_访问Web元素

2014-04-29 17:31 246 查看

第一种方法:

package com.java.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.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class LoginAction2 extends ActionSupport implements RequestAware,SessionAware, ApplicationAware {

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;
}

public void setRequest(Map<String, Object> request) {
this.request = request;
}

public void setSession(Map<String, Object> session) {
this.session = session;
}

public void setApplication(Map<String, Object> application) {
this.application = application;
}
}

第二种方法:

package com.java.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 LoginAction3 extends ActionSupport {

private HttpServletRequest request;
private HttpSession session;
private ServletContext application;

public LoginAction3() {
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;
}

}

输出结果显示

<%@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 />
<s:property value="#attr.a1"/><br />
<s:property value="#attr.s1"/><br />
<s:property value="#attr.r1"/><br />
<s:debug></s:debug>
<br />
</body>

index中:

<form name="f" action="" method="post">
用户名：<input type="text" name="user.name"/>
密码：<input type="text" name="user.password"/>
<br />
<!-- 使用多种按钮提交同一个form -->
<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>

struts.xml中

<struts>
<constant name="struts.devMode" value="true" />
<package name="user" namespace="/login" extends="struts-default">
<!-- method里面的{1}代表Student*后面的第一个*,也就是说如果路径为<%=context %>/actions/Studentadd">的时候,*为add,即调用了add方法 -->
<action name="login*" class="com.java.action.LoginAction{1}">
<result name="success">
/user_login_success.jsp
</result>
</action>
</package>
</struts>

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标签： struts2 web

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