使用这种方式也需要通过请求参来来指定要执行的动作。请求参数名的格式为
action!method.action
注:由于Struts2只需要参数名,因此,参数值是什么都可以。
下面我就给出一个实例程序来演示如何处理有多个submit的form:
主页面more_submit.jsp
<%@ page language=\"java\" import=\"java.util.*\" pageEncoding=\"GBK\"%>
<%@ taglib prefix=\"s\" uri=\"/struts-tags\"%>
<html>
<head>
<title>My JSP \'hello.jsp\' starting page</title>
</head>
<body>
<s:form action=\"submit.action\">
<s:textfield name=\"msg\" label=\"输入内容\" />
<s:submit name=\"save\" value=\"保存\" align=\"left\" method=\"save\" />
<s:submit name=\"print\" value=\"打印\" align=\"left\" method=\"print\" />
</s:form>
</body>
</html>
MoreSubmitAction.java
package action;
import javax.servlet.http.*;
import com.opensymphony.xwork2.ActionSupport;
import org.apache.struts2.interceptor.*;
public class MoreSubmitAction extends ActionSupport implements
ServletRequestAware {
private String msg;
private javax.servlet.http.HttpServletRequest request;
// 获得HttpServletRequest对象
public void setServletRequest(HttpServletRequest request) {
this.request = request;
}
// 处理save submit按钮的动作
public String save() throws Exception {
request.setAttribute(\"result\", \"成功保存[\" + msg + \"]\");
return \"save\";
}
// 处理print submit按钮的动作
public String print() throws Exception {
request.setAttribute(\"result\", \"成功打印[\" + msg + \"]\");
return \"print\";
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
}
structs.xml
<?xml version=\"1.0\" encoding=\"UTF-8\" ?>
<!DOCTYPE struts PUBLIC \"-//Apache Software Foundation//DTD Struts Configuration 2.1//EN\" \"http://struts.apache.org/dtds/struts-2.1.dtd\">
<struts>
<package name=\"demo\" extends=\"struts-default\">
<action name=\"submit\" class=\"action.MoreSubmitAction\">
<result name=\"save\">
/result.jsp
</result>
<result name=\"print\">
/result.jsp
</result>
</action>
</package>
</struts>
result.jsp
<%@ page language=\"java\" contentType=\"text/html; charset=GBK\"
pageEncoding=\"GBK\"%>
<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">
<html>
<head>
<meta http-equiv=\"Content-Type\" content=\"text/html; charset=ISO-8859-1\">
<title>提交结果</title>
</head>
<body>
<h1>${result }</h1>
</body>
</html>
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