关于STRUTS1的ACTION问题

一般的书上都能介绍，在配置action的时候传进去个参数，一般为按钮（Submit），因为按钮的名字不同，所以可以根据名字来判断是那个页提交的，应该执行那些操作。

JSP:
<%@ page language="java" pageEncoding="gbk"%><%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html:html lang="true">
  <head>
    <html:base />

    <title>login.jsp</title> <meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
  </head>

  <body>
    <html:form action="/user.do"> 
     用户名:<html:text property="name"></html:text>
     密  码:<html:password property="pwd"></html:password>
     <html:submit value="增加" property="method" />
     <html:submit value="查询" property="method" />
     <html:submit value="删除" property="method" />
     <html:submit value="修改" property="method" />
    </html:form><br>
  </body>
</html:html>Struts-config
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd"><struts-config>
  <data-sources />
  <form-beans>
   <form-bean name="myform" type="com.accp.struts.form.UserActionForm"></form-bean>
  </form-beans>
  <global-exceptions />
  <global-forwards />
  <action-mappings>
   <action path="/user" parameter="method" type="com.accp.struts.action.UserAction" name="myform"></action>
  </action-mappings>
  <message-resources parameter="com.accp.struts.ApplicationResources" />
</struts-config>package com.accp.struts.action;import java.util.Map;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import org.apache.struts.actions.LookupDispatchAction;public class UserAction extends LookupDispatchAction { public ActionForward insert(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
System.out.println("insert................End");
// TODO Auto-generated method stub
return null;
}

public ActionForward delete(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
System.out.println("delete................End");
// TODO Auto-generated method stub
return null;
}

public ActionForward select(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
System.out.println("select................End");
// TODO Auto-generated method stub
return null;
}

public ActionForward update(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
System.out.println("update................End");
// TODO Auto-generated method stub
return null;
}
@Override
protected String getMethodName(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response,
String parameter) throws Exception {
parameter=request.getParameter(parameter);//取得所传参数
byte[] bytes=parameter.getBytes("ISO8859_1");//中文参数转码
String method=new String(bytes);//得到处理后的参数

if(method.equals("增加"))
{
return "insert";
}
if(method.equals("删除"))
{
return "delete";
}
if(method.equals("查询"))
{
return "select";
}
if(method.equals("修改"))
{
return "update";
}

return "";
} @Override
protected Map getKeyMethodMap() {
// TODO Auto-generated method stub
return null;
}

}

上面是 1.2的时候的一种方法下面是1.1 1.2 都可以的时候
<%@ page language="java" pageEncoding="gbk"%><%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html:html lang="true">
  <head>
    <html:base />    <title>当没有getMethod方法而继承LookupDispatchAction 时（如struts1.1）则使用界面上的方法</title> <meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
  </head>

  <body>
    <html:form action="/user.do"> 
     用户名:<html:text property="name"></html:text>
     密  码:<html:password property="pwd"></html:password>
     <input type="hidden" name="method" />
     <html:submit value="增加"  onclick="method.value='insert';"/>
     <html:submit value="查询"  onclick="method.value='select';" />
     <html:submit value="删除" onclick="method.value='delete';" />
     <html:submit value="修改"  onclick="method.value='update';" />
    </html:form><br>
  </body>
</html:html>Struts-config
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd"><struts-config>
  <data-sources />
  <form-beans>
   <form-bean name="myform" type="com.accp.struts.form.UserActionForm"></form-bean>
  </form-beans>
  <global-exceptions />
  <global-forwards />
  <action-mappings>
   <action path="/user" parameter="method" type="com.accp.struts.action.UserAction" name="myform"></action>
  </action-mappings>
  <message-resources parameter="com.accp.struts.ApplicationResources" />
</struts-config>Actionpackage com.accp.struts.action;import java.util.Map;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import org.apache.struts.actions.LookupDispatchAction;
/**
* 当没有getMethod方法而继承LookupDispatchActio 时（如struts1.1）则使用界面上的方法
* @author Administrator
*
*/
public class UserAction extends DispatchAction { public ActionForward insert(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
Thread.sleep(5000);
System.out.println("insert................End");
// TODO Auto-generated method stub
return null;
}

public ActionForward delete(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
System.out.println("delete................End");
// TODO Auto-generated method stub
return null;
}

public ActionForward select(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
System.out.println("select................End");
// TODO Auto-generated method stub
return null;
}

public ActionForward update(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
System.out.println("update................End");
// TODO Auto-generated method stub
return null;
}

}

不同JSP提交到同一个Action处理
login.jsp  和update.jsp
<%@ page language="java" pageEncoding="gbk"%><%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html:html lang="true">
  <head>
    <html:base />

    <title>login.jsp</title>    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
      </head>

  <body>
    <html:form action="/user.do"> 
        用户名:<html:text property="name"></html:text>
        密  码:<html:password property="pwd"></html:password>
       <input type="hidden" name="method" value="insert"/>
        <html:submit value="增加" property="go" />

    </html:form><br>
  </body>
</html:html>
<%@ page language="java" pageEncoding="gbk"%><%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html:html lang="true">
  <head>
    <html:base />

    <title>update.jsp</title>    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
      </head>

  <body>
    <html:form action="/userupdate.do"> 
        用户名:<html:text property="name"></html:text>
        密  码:<html:password property="pwd"></html:password>
       <input type="hidden" name="method" value="update"/>
        <html:submit value="修改" property="go" />

    </html:form><br>
  </body>
</html:html><?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd"><struts-config>
  <data-sources />
  <form-beans>
      <form-bean name="myform" type="com.accp.struts.form.UserActionForm"></form-bean>
  </form-beans>
  <global-exceptions />
  <global-forwards />
  <action-mappings>
          <action path="/user" parameter="method" type="com.accp.struts.action.UserAction" name="myform"></action>
  </action-mappings>
<action-mappings>
          <action path="/userupdate" parameter="method" type="com.accp.struts.action.UserAction" name="myform"></action>
  </action-mappings>
  <message-resources parameter="com.accp.struts.ApplicationResources" />
</struts-confAction Code:package com.ky.action;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import org.apache.struts.actions.LookupDispatchAction;public class UserAction extends DispatchAction {    public ActionForward insert(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {


        // TODO Auto-generated method stub
        return null;
    }

    public ActionForward update(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {

        // TODO Auto-generated method stub
        return null;
    }

}

struts config定义action里有个参数parameter="action"或者parameter="method"，默认好像就是method
然后页面上传了这个参数的值，就对应action里的方法名
一般都是一个模块一个action，不会一个jsp一个action的

action的入口是execute你可以判断按钮

上面的几个例子都不错。
主要就是在建立action时，让它继承DispatchAction类，
然后在action类中，写你所用的方法，
在struts-config.xml文件中的action上配置parameter属性，
这个属性用于指定访问时的参数名，
假如你的parameter="par",
那么调用action时用 …….do?par=后面跟action中的某个方法的方法名。

用DispatchAction
在配置文件中配置：parameter="method"
在JSP中给method赋值，就会调用相应的处理方法

只要在配置文件中给parameter加个参数,然后在Action根据参数名编写相应的方法就可以了.

楼上的说的都已经很详细了，我就说种直接继承action 的方法吧，其实和上面的也是大同小异
（struts1.2）
添加页面
<form name="form1" action="<%=basePath %>/moreRequest.do?method=add" method="post">
    <input type="submit" value="添加">
   </form>
删除页面
<form name="form1" action="<%=basePath %>moreRequest.do?method=delete" method="post">
    <input type="submit" value="删除">
   </form>actionpublic class MoreRequestAction extends Action {
/*
* Generated Methods
*/
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
String method = request.getParameter("method");
if(method.equals("add"))
{
return doAdd(mapping,form,request,response);
}
else
if(method.equals("delete"))
{
return doDelete(mapping,form,request,response);
}
else
{
return mapping.findForward("error");
}
} private ActionForward doDelete(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {

String method = request.getParameter("method");
System.out.print(" the method is " + method);

return null;
} private ActionForward doAdd(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {

String method = request.getParameter("method");
System.out.print(" the method is " + method);
return null;
}
}
struts-config.xml
<action
      path="/moreRequest"
      type="sourCode.action.MoreRequestAction"/>
其中的<%=basePath %> 可以改成你的工程的名称。
它本身也是一个路径是
<%String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>
jsp页面自己生产的。

LS的都太强了，代码好好多阿！100分的诱惑不小阿。LZ可以在form中指定一个参数，各个页面传的参数值不同即可判断页面的不同。

一般都是一个模块一个action，不会一个jsp一个action的

看着觉得有点晕。要是按照你这个说法，我觉得和servlet没啥区别的，还要structs干嘛捏？直接定义一个servlet，做一个总调度器，然后所有的jsp都通过这个servlet出去，和你的实现方式一样，structs的功能=0一般基本的都是一个action对应一个jsp的。但对于一个一个模块的CURD操作，可以使用一个DispacthAction来进行控制，不知道你说的是不是这个意思。方法就是继承DispacthAction，注意structs-config.xml中要指定
<action
            attribute="DemoForm"
            name="DemoForm"
parameter="action"   //注意这句话
            path="/demo"
scope="request"
validate="false"
            type="org.springframework.web.struts.DelegatingActionProxy">
<forward name="showAdd" contextRelative="true" path="articleLayout_addArticle" />
<forward name="showModify" contextRelative="true" path="articleLayout_modArticle" />
...
</action>
引用的时候url加上<a href="demo.do?action=方法名（如AddArticle）">添加</a>就可以了。然后在DispacthAction编写相应的方法名（如AddArticle）就行了。
public ActionForward addArticle(
final ActionMapping mapping,
final ActionForm form,
final HttpServletRequest request,
final HttpServletResponse response)
throws ServletException {
ArticleForm articleForm = (ArticleForm) form;
articleForm.setCreator(CurrentUser.get().getUserid());
articleForm.setCreatorname(CurrentUser.get().getName()); return mapping.findForward("showAdd");
}

你主要看是如何定义的。主要就是parameter="action" ，这里的action就是你在URL里的参数名，而它的值就是java代码中的方法名，大小写要注意配套。

楼主只要把Action继承DispathAction然后把execute方法Copy下来，改方法名改了就是的了，execute方法不能存在。。然后在struts-config.xml里面的Action配置里面配置一个parameter=""
然后Struts 会根据你从页面传过来的这个值来找到对应的方法的。。
传过来的值要和你Action里面的某个方法的名字一样，不然找不到对应的方法就会报错的

好象Struts有一个抽象类叫 DispatchAction来着呵呵

谢谢各位了小弟没分了不然多给大家了
这是在CSDN注册以来回答最有成效的一次了

大哥你可以使用动态的SERVLET继承的类就可以用一个Action来实现业务

调试易

关于STRUTS1的ACTION问题

解决方案 »