第15章struts2标签.doc

Struts标签： 1.通用标签： (1)property (2)bean (3)param (4)debug 2.控制标签： (1)if elseif else (2)iterator 一、property标签 类似于上节课的例子， 1.在WebRoot下新建一个index_tags.jsp: %@ 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 titleMy JSP index.jsp starting page/title /head body 访问属性：a href=http://localhost:8080/ch2_example1/test/tags.action?username=aaapassword=bbbtags/a /body /html 2.新建一个my.tags.TagsAction: package my.tags; import com.opensymphony.xwork2.ActionSupport; public class TagsAction extends ActionSupport{ private String username; private String password; public String execute(){ this.addFieldError(fielderror.test, wrong!); return SUCCESS; } 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; } } 3.修改struts.xml: package name=mypack namespace=/test extends=struts-default action name=tags class=my.tags.TagsAction method=execute result name=success/WEB-INF/page/tags.jsp /result /action /package 4.在WEB-INF/page下新建tags.jsp: %@ 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 titleMy JSP tags.jsp starting page/title /head body ol liproperty:s:property value=username//li liproperty赋值为字符串:s:property value=username//li liproperty设为默认值:s:property value=admin default=管理员//li liproperty设定HTML:s:property value=hr/ escape=true//li /ol /body /html 测试： 在地址栏输入： http://localhost:8080/ch2_example1/index_tags.jsp 点击超链接tags 得到下面的结果： property:aaa property赋值为字符串:username property