(Struts2学习篇)Struts2标签库（表单标签）

谁践踏了优雅 2023-10-18 20:53 17阅读 0赞

一、jsp页面代码（index.jsp）

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
 <%@taglib prefix="s" uri="/struts-tags"%>
 <%@ taglib prefix="sx" uri="/struts-dojo-tags" %>
 
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 <html>
 <head> 
 <title>My JSP 'index.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">
 	
 	
 	<sx:head/>
 </head> 
 <body>
 
 <s:form action="login"> 	
 		
 <s:textfield name="username" key="用户"/>
 <s:textfield name="password" key="密码"/>
 
 <s:submit value="登入"/>
 <s:submit value="取消"/>
 
 	<s:checkboxlist name="hobbies" label="兴趣爱好" labelposition="top" list="{'登山','游泳','阅读'}"/>
 	
 	<s:combobox name="book" label="请选择你感兴趣的图书" labelposition="top" list="{'EJB 入门精通','Android 的疯狂讲义','Spring2.0精解'}"></s:combobox>
 	
 	<sx:datetimepicker name="birthday" labelposition="top" label="日期选择框" toggleType="explode" value="today" /> 
 	 
 	<s:doubleselect name="province" list="{'湖南省','江西省'}" doubleList="top=='湖南省'?{'长沙'，'株洲','湘潭'}:{'南昌','新余','宜春'}" doubleName="city"></s:doubleselect>
 	
 	
 	<s:select name="books" label="请选择你感兴趣的图书" labelposition="top" multiple="true" list="{'EJB 入门精通','Android 的疯狂讲义','Spring2.0精解','精通Struts2'}"></s:select>
 	
 	<s:radio name="service" label="请选择相关服务" labelposition="top" list="{'Weblog','WebSphrere','JBoss'}"/>	
 </s:form> 
 </body>
 </html>

二、action页面（Login.action）

public class LoginAction implements Action {
    	//相关登入帐号和密码(文本框)
    	private String username;
    	private String password;
    	//复选框
    	private String[] hobbies;
    	//下拉框
        private String[] book;
        //时间
        private String birthday;
        //级联表框
        private String province;
        private String city;
        //多项选择
        private String[] books;
        //单选框
        private String service;
    	
    
    	public String getUsername() {
    		return username;
    	}
    
    
    	public void setUsername(String username) {
    		this.username = username;
    	}
    
    
    	public String getPassword() {
    		return password;
    	}
    
    
    	public void setPassword(String password) {
    		this.password = password;
    	}
    
    
    	public String execute() throws Exception {
    		// TODO Auto-generated method stub
    		ActionContext context=ActionContext.getContext();
    		//访问统计数
    		Integer counter=(Integer) context.getApplication().get("counter");
    		if(counter==null){
    			counter=1;
    		}else{
    			counter=counter+1;
    		}
    		//通过ActionContext设置application 的范围属性
    		context.getApplication().put("counter", counter);
    		//通过ActionContext设置session的范围属性
    		context.getSession().put("username", getUsername());
    		if(getUsername().equals("admin")&&getPassword().equals("123456")){
    			//通过ActionContext设置request的范围属性
    			context.put("response", "登入成功！");
    			return SUCCESS;
    			
    		}else{
    			//通过ActionContext设置request的范围属性
    			context.put("response", "登入失败！");
    			return ERROR;
    		}
    
    	}
    
    
    	public void setHobbies(String[] hobbies) {
    		this.hobbies = hobbies;
    	}
    
    
    	public String[] getHobbies() {
    		return hobbies;
    	}
    
    
    	public void setBook(String[] book) {
    		this.book = book;
    	}
    
    
    	public String[] getBook() {
    		return book;
    	}
    
    
    	public void setBirthday(String birthday) {
    		this.birthday = birthday;
    	}
    
    
    	public String getBirthday() {
    		return birthday;
    	}
    
    
    	public void setProvince(String province) {
    		this.province = province;
    	}
    
    
    	public String getProvince() {
    		return province;
    	}
    
    
    	public void setCity(String city) {
    		this.city = city;
    	}
    
    
    	public String getCity() {
    		return city;
    	}
    
    
    	public void setBooks(String[] books) {
    		this.books = books;
    	}
    
    
    	public String[] getBooks() {
    		return books;
    	}
    
    
    	public void setService(String service) {
    		this.service = service;
    	}
    
    
    	public String getService() {
    		return service;
    	}
    
    }

三、结果页面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
 <%@taglib prefix="s" uri="/struts-tags"%>
 
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 <html>
 <head>
 
 
 <title>My JSP 'index.jsp' starting page</title>
 	
 	
 </head>
 
 <body>
 本站的访问次数：${applicationScope.counter} 
 ${sessionScope.username},你已经登入！
 ${requestScope.response} 
 
 复选框相关结果：
 <s:property value="hobbies"/> 
 下拉框相关结果： 
 <s:property value="book"/> 
 时间相关结果：
 <s:property value="birthday"/> 
 级联列表结果:
 <s:property value="province"/> 
 <s:property value="city"/> 
 多项列表框
 <s:property value="books"/> 
 单选框
 <s:property value="service"/> 
 
 
 </body>
 </html>

执行结果图：

![Center][]

结果：

![Center 1][]

[Center]: https://img-blog.csdn.net/20130724113051125?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXpoaXdlbmdhbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 1]: https://img-blog.csdn.net/20130724113146812?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXpoaXdlbmdhbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center