标签:style http io color ar os 使用 java sp
在很多Web应用中,为了完成不同的工作,一个HTML form标签中可能有两个或多个submit按钮,如下面的代码所示:
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<html action="..." method="post">
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... ...
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<input type="submit" value="保存" />
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<input type="submit" value="打印" />
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</html>
由于在<form>中的多个提交按钮都向一个action提交,使用Struts2 Action的execute方法就无法判断用户点击了哪一个提交按钮。
请求参数名的格式为
action!method.action
【第2步】实现Action类(MoreSubmitAction)
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package action;
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import javax.servlet.http.*;
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import com.opensymphony.xwork2.ActionSupport;
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import org.apache.struts2.interceptor.*;
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public class MoreSubmitAction extends ActionSupport implements ServletRequestAware
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{
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private String msg;
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private javax.servlet.http.HttpServletRequest request;
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public void setServletRequest(HttpServletRequest request)
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{
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this.request = request;
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}
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public String save() throws Exception
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{
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request.setAttribute("result", "成功保存[" + msg + "]");
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return "save";
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}
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public String print() throws Exception
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{
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request.setAttribute("result", "成功打印[" + msg + "]");
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return "print";
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}
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public String getMsg()
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{
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return msg;
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}
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public void setMsg(String msg)
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{
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this.msg = msg;
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}
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}
【第3步】配置Struts2 Action,struts.xml如下:
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<?xml version="1.0" encoding="UTF-8" ?>
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<!DOCTYPE struts PUBLIC
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"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
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"http://struts.apache.org/dtds/struts-2.0.dtd">
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<struts>
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<package name="demo" extends="struts-default" >
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<action name="submit" class="action.MoreSubmitAction">
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<result name="save" >
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/result.jsp
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</result>
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<result name="print">
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/result.jsp
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</result>
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</action>
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</package>
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</struts>
【第4步】编写结果页(result.jsp)
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<%@ page pageEncoding="GBK"%>
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<html>
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<head>
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<title>提交结果</title>
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</head>
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<body>
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<h1>${result}</h1>
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</body>
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</html>
在result.jsp中将在save和print方法中写到request属性中的执行结果信息取出来,并输出到客户端。
启动Tomcat后,在IE中执行如下的URL来测试程序:
http://localhost:8080/moresubmit/more_submit.jsp
大家也可以直接使用如下的URL来调用save和print方法:
调用save方法:http://localhost:8080/moresubmit/submit!save.action
调用print方法:http://localhost:8080/moresubmit/submit!print.action
Struts2 处理一个form多个submit
标签:style http io color ar os 使用 java sp
原文地址:http://blog.csdn.net/bonlog/article/details/41051817