标签:style class blog code java http
为什么重拾Struts 1
曾经是最主流的MVC框架
市场份额依然很大
很多遗留系统中依旧使用
维护和升级都需要熟悉Struts 1
与Struts 2相比
编码、配置繁琐
侵入性强
登录失败
返回登录页面,提示失败
登录成功
保存当前登录用户到Session
转到成功页面,显示欢迎信息
开发步骤:
1、添加Struts到项目添加jar包和struts-config.xml
在web.xml中配置ActionServlet
2、开发并配置ActionForm
3、开发并配置LoginAction
4、创建并编写页面
5、调试运行
新建web project项目:Struts1Demo
右击项目添加struts1支持
配置struts-config.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN" "http://struts.apache.org/dtds/struts-config_1_3.dtd"> <!-- 在/org/apache/struts/resources/struts-config_1_3.dtd 第24行 --> <struts-config> <!-- Form --> <form-beans > <form-bean name="userLoginForm" type="com.demo.form.LoginForm"></form-bean> </form-beans> <!-- Action --> <action-mappings > <action name="userLoginForm" path="/login" type="com.demo.action.LoginAction" scope="request"> <forward name="success" path="/success.jsp"></forward> <forward name="input" path="/index.jsp"></forward> </action> </action-mappings> </struts-config>
<servlet> <servlet-name>action</servlet-name> <servlet-class>org.apache.struts.action.ActionServlet</servlet-class> <init-param> <param-name>config</param-name> <param-value>/WEB-INF/struts-config.xml</param-value> </init-param> </servlet>
新建LoginAction extends Action在com.demo.action下重写execute方法(execute+alt+/ 选择第二个)
@Override public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { //做登陆 ActionForward af = null; LoginForm lf = (LoginForm) form; UserBiz userBiz = new UserBizImpl(); if(userBiz.login(lf.getUsername(),lf.getPassword())){ //登陆成功 request.getSession().setAttribute("loginUser", lf.getUsername()); //跳转 //mapping 是配置文件struts-config.xml的 action-mapping af=mapping.findForward("success"); }else{ request.setAttribute("message", "用户名密码错误"); af=mapping.findForward("input"); } return af; }
public boolean login(String username, String password) { //直接用模拟,不访问数据库 if("admin".equals(username)&&"admin".equals(password)){ return true; }else return false; }
新建类LoginForm extends ActionForm 在com.demo.form下
私有属性username,password和getter,setter方法;
重写reset方法(execute+alt+/ 选择第二个)
@Override public void reset(ActionMapping mapping, HttpServletRequest request) { //每次提交表单的时候都会调用一次 this.username=null; this.password=null; }
Index.jsp
<body> <font color="red">${message }</font> <form action="login.do" method="post"> <table> <tr> <td>用户名</td> <td><input name="username"/> </td> </tr> <tr> <td>密码:</td> <td><input name="password" type="password"/> </td> </tr> <tr> <td><input type="submit" value="登陆"/> </td> <td><input value="重置" type="reset"/> </td> </tr> </table> </form> </body>
<body> 欢迎:${loginUser }登陆! </body>
ActionServlet
1. 由Struts提供:org.apache.struts.action.ActionServlet
2. 本身是一个Servlet,需要在web.xml中配置
Action -- Action Bean
1. 封装某一类客户操作,如:登录、注销
2. 需要在struts-config.xml中配置
3. 继承自org.apache.struts.action.Action,实现execute方法
4. execute方法的参数
mapping
form
request、response
5. execute方法的返回值类型:ActionForward
ActionForm -- Form Bean
1) 封装页面提交的数据
2) 继承自org.apache.struts.action.ActionForm
3) 需要在struts-config.xml中配置
4) 从页面获得输入- 属性与表单域name属性值一致
loginForm.getUsername();
loginForm.getPassword();
JSP、JSTL、EL、自定义标签
Struts标签
<html:form action="login" method="post"> <table> <tr> <td>用户名</td> <td><html:text property= "username" /></td> </tr> <tr> <td>密码:</td> <td><html:password property= "password" /></td> </tr> <tr> <td><html:submit value="登陆" /></td> <td><html:reset value="重置" /></td> </tr> </table> </html:form>
List<User> userList = userBiz.getAllUser();request.setAttribute("userList", userList);
public List<User> getAllUser() { List<User> userList = new ArrayList<User>(); userList.add(new User("admin", "admin", new Date(), 1)); userList.add(new User("admin1", "admin1", new Date(), 0)); return userList; }在success.jsp
<%@ taglib prefix="html" uri="http://struts.apache.org/tags-html" %> <%@ taglib prefix="bean" uri="http://struts.apache.org/tags-bean" %> <%@ taglib prefix="logic" uri="http://struts.apache.org/tags-logic" %>Body里面:
<body> 欢迎:${loginUser }登陆! <table border="1px" > <thead> <tr> <th>用户名</th> <th>生日</th> <th>状态</th> </tr> </thead> <tbody> <!-- 结合name和property属性查找JavaBean --> <logic:iterate id="u" name="userList"> <tr> <td> <!-- bean:write标签用于输出页面输出 --> <bean:write name="u" property="username"/> </td> <td> <bean:write name="u" property="birthday" format="yyyy-MM-dd"/> </td> <td> <!-- <bean:write name="u" property="status" format="#,###"/> --> <logic:equal value="1" name="u" property="status">正常</logic:equal> <logic:equal value="0" name="u" property="status">禁用</logic:equal> </td> </tr> </logic:iterate> </tbody> </table> </body>
标签:style class blog code java http
原文地址:http://blog.csdn.net/jerome_s/article/details/34167269