Struts 2:處理一個form多個submit
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Struts 2:處理一個form多個submit
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例如以下實(shí)例:
1.主頁(yè)面:more_submit.jsp,該頁(yè)面有兩個(gè)submit,但在同一個(gè)Action類(lèi)中執(zhí)行;
1 <%@ page language="java" contentType="text/html; charset=BIG5" 2 pageEncoding="BIG5"%> 3 <%@ taglib prefix="s" uri="/struts-tags" %> 4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 5 <html> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=BIG5"> 8 <title>My Jsp "hello.jsp" starting page</title> 9 </head> 10 <body> 11 <s:form action="submit.action"> 12 <s:textfield name="msg" label="輸入內(nèi)容"></s:textfield> 13 <s:submit name="save" value="保存" align="left" method="save"></s:submit> 14 <s:submit name="print" value="打印" align="left" method="print"></s:submit> 15 </s:form> 16 </body> 17 </html>2.Action類(lèi),該類(lèi)要注意兩點(diǎn):(1)save和print方法必須存在,否則會(huì)拋出java.lang.NoSuchMethodException異常;(2)在Struts 2 的Action動(dòng)作的execute方法中,無(wú)法訪(fǎng)問(wèn)request對(duì)象,因此,Struts 2的Action類(lèi)需要實(shí)現(xiàn)一個(gè)Struts2自帶的攔截器來(lái)獲得request對(duì)象,攔截器為:org.apache.struts2.interceptor.ServletRequestAware;
1 package action; 2 3 import javax.servlet.http.*; 4 5 import com.opensymphony.xwork2.ActionSupport; 6 import org.apache.struts2.interceptor.*; 7 8 //save和print方法必須存在,否則會(huì)拋出java.lang.NoSuchMethodException異常 9 10 public class MoreSubmitAction extends ActionSupport implements ServletRequestAware { 11 /** 12 * 13 */ 14 private static final long serialVersionUID = 1L; 15 private String msg; 16 public String getMsg() { 17 return msg; 18 } 19 20 public void setMsg(String msg) { 21 this.msg = msg; 22 } 23 24 private javax.servlet.http.HttpServletRequest request; 25 26 //獲得HttpServletRequest對(duì)象 27 public void setServletRequest(HttpServletRequest request) 28 { 29 this.request = request; 30 } 31 32 //處理save submit按鈕的動(dòng)作 33 public String save() throws Exception 34 { 35 request.setAttribute("result", "成功保存["+msg+"]"); 36 return "save"; 37 } 38 39 //處理print submit按鈕的動(dòng)作 40 public String print() throws Exception 41 { 42 request.setAttribute("result", "成功打印["+msg+"]"); 43 return "print"; 44 } 45 }3.配置Struts2 Action
1 <package name="demo" extends="struts-default"> 2 <action name="submit" class="action.MoreSubmitAction"> 3 <result name="save">/result.jsp</result> 4 <result name="print">/result.jsp</result> 5 </action> 6 </package>4.編寫(xiě)結(jié)果頁(yè):result.jsp
1 <%@ page language="java" contentType="text/html; charset=BIG5" 2 pageEncoding="BIG5"%> 3 <%@ taglib prefix="s" uri="/struts-tags" %> 4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 5 <html> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=BIG5"> 8 <title>提交結(jié)果</title> 9 </head> 10 <body> 11 <h1> 12 ${msg} 13 </h1> 14 </body> 15 </html>?
轉(zhuǎn)載于:https://www.cnblogs.com/AlexMrChen/archive/2013/03/07/2947781.html
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