Struts的页面控制与配置
一,用到文件
1.输入页面
input1.jsp页面
threeInput.jsp页面
2.输出页面
show.jsp页面
3.ActionForm类
4.action类
[1]HelloWorld1Action 类
[2]HelloWorld2Action 类
[3]ThreeInputAction类
二.配置struts-config.xml
1.无输入页面,只有action和输出
2.有输入页面,无bean,action就要用 request.getParameter("msg");拿参数
3.有bean
4.输入页面的配置
[1]直接/form/input1.jsp浏览就不用配置
[2]
5.多按钮的配置
1.输入页面
input1.jsp页面
<%@ page language="java" pageEncoding="utf-8"%> <%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean"%> <%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html"%> <html> <head> <title>JSP for HelloWorldForm form</title> </head> <body> <html:form action="/helloWorld2"> msg : <html:text property="msg"/><html:errors property="msg"/><br/> <html:submit/><html:cancel/> </html:form> </body> </html>
threeInput.jsp页面
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'input3.jsp' starting page</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">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form action="<%=basePath%>threeInput.do" method="post">
欢迎语：<input type="text" name="msg" value="" />
<input type="submit" name="method" value="insert" />
<input type="submit" name="method" value="update" />
<input type="submit" name="method" value="delete" />
</form>
</body>
</html>
2.输出页面
show.jsp页面
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'show.jsp' starting page</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">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<%
String str = (String)request.getAttribute("helloWorld");
%>
<body>
你输入的欢迎语1是：${helloWorld}<br>
你输入的欢迎语2是：<%=str%>
</body>
</html>
3.ActionForm类
public class HelloWorldForm extends ActionForm {
/*
* Generated fields
*/
/** msg property */
private String msg;
/*
* Generated Methods
*/
/**
* Method reset
* @param mapping
* @param request
*/
public void reset(ActionMapping mapping, HttpServletRequest request) {
// TODO Auto-generated method stub
}
/**
* Returns the msg.
* @return String
*/
public String getMsg() {
return msg;
}
/**
* Set the msg.
* @param msg The msg to set
*/
public void setMsg(String msg) {
this.msg = msg;
}
}
4.action类
[1]HelloWorld1Action 类
public class HelloWorld1Action extends Action{
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
// TODO Auto-generated method stub
String str = "hello zhao在";
request.setAttribute("helloWorld", str);
return mapping.findForward("show");
}
}
[2]HelloWorld2Action 类
public class HelloWorld2Action extends Action {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
HelloWordForm helloWordForm = (HelloWordForm) form;// TODO Auto-generated method stub
String msg = helloWordForm.getMsg();
request.setAttribute("helloWorld", msg);
//response.setCharacterEncoding("utf-8");
//response.setContentType("text/html;charset=utf-8");
return mapping.findForward("show");
}
}
[3]ThreeInputAction类
public class ThreeInputAction extends DispatchAction {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
HelloWordForm helloWordForm = (HelloWordForm) form;// TODO Auto-generated method stub
return null;
}
}
二.配置struts-config.xml
1.无输入页面,只有action和输出
<action-mappings >
<action path="/helloWorld1" type="com.zhao.struts.action.HelloWorld1Action">
<forward name="show" path="/WEB-INF/jsp/show.jsp" />
</action>
</struts-config>
2.有输入页面,无bean,action就要用 request.getParameter("msg");拿参数
3.有bean
<form-beans >
<form-bean name="helloWorldForm" type="com.zhao.struts.form.HelloWorldForm" />
</form-beans>
<action-mappings >
<action
attribute="helloWorldForm"
name="helloWorldForm"
path="/helloWorld2"
scope="request"
type="com.zhao.struts.action.HelloWorld2Action"
validate="false">
<forward name="show" path="/WEB-INF/jsp/show.jsp" />
</action>
</action-mappings >
4.输入页面的配置
[1]直接/form/input1.jsp浏览就不用配置
[2]
<!--struts能生成-->
<action forward="/WEB-INF/jsp/input1.jsp" path="/input2" />
<action include="/WEB-INF/jsp/input1.jsp" path="/input3" />
<!--struts不能生成-->
<action
path="/input4"
type="org.apache.struts.actions.ForwardAction"
parameter="/WEB-INF/jsp/input1.jsp" />
5.多按钮的配置
<action
attribute="helloWorldForm"
name="helloWorldForm"
parameter="method"
path="/threeInput"
scope="request"
type="com.zhao.struts.action.ThreeInputAction">
<forward name="show" path="/WEB-INF/jsp/show.jsp" />
</action>