web应用中，为完成不同工作，一个jsp的form标签可能有多个submit。如下代码：
<s:form action="submit" method="post" namespace="/my"> <s:textfield name="msg" label="叙述："></s:textfield> <s:submit value="保存" name="save" method="save"></s:submit> <s:submit value="打印" name="print" method="print"></s:submit> </s:form>
多个submit向同一个action提交，struts2中action默认的execute()无法判定哪个submit。
所以需要通过请求参判定执行的动作。
格式：action!method.action
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实例。
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1.index.jsp代码。
<%@taglib prefix="s" uri="/struts-tags"%> ... <s:form action="submit" method="post" namespace="/my"> <s:textfield name="msg" label="叙述："></s:textfield> <s:submit value="保存" name="save" method="save"></s:submit> <s:submit value="打印" name="print" method="print"></s:submit> </s:form>
method指定调用struts2中action的方法名。
2.action代码。（MoreSubmitAction）
package pro.action;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts2.interceptor.ServletRequestAware;
import com.opensymphony.xwork2.ActionSupport;
public class MoreSubmitAction extends ActionSupport implements ServletRequestAware{
private String msg;
private HttpServletRequest request;
public MoreSubmitAction(){}
public String getMsg() {
return msg;
}
//获取HttpServletRequest对象
public void setServletRequest(HttpServletRequest request) {
this.request=request;
}
public void setMsg(String msg) {
this.msg = msg;
}
//处理submit save动作
public String save(){
request.setAttribute("msg",msg);
return "success";
}
//处理submit print动作
public String print(){
request.setAttribute("msg",msg);
return "success";
}
}
3.struts.xml代码。
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <package name="struts2" namespace="/my" extends="struts-default"> <action name="submit" class="pro.action.MoreSubmitAction"> <result name="success">/index.jsp</result> </action> </package> </struts>