<form action="login.do" method="post">u:<input type="text" name="name"><br/>p:<input type="password" name="password"><br/><input type="submit" value="提交"></form>

package com.forms;import org.apache.struts.action.ActionForm;public class UserForm extends ActionForm {private String name;private String password;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}}

package com.actions;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;import com.forms.UserForm;public class LoginAction extends Action {@Overridepublic ActionForward execute(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response)throws Exception {// TODO Auto-generated method stubUserForm userForm=(UserForm)form;if(userForm.getName().equals("1")&&userForm.getPassword().equals("1")){return mapping.findForward("ok");}else{return mapping.findForward("err");}}
}

<struts-config><!-- 配置表单 --><form-beans><!-- name是表单名字，可以随便写，一般ActionForm名小写 --><form-bean name="userForm" type="com.forms.UserForm"></form-bean></form-beans><!-- 配置action --><action-mappings><!-- path表示将来访问该action的资源名，可以随意取,/login就表示它是代表为login.do的action

--><!-- attribute表示后面scope设置的key值，默认就是表单名小写--><!-- name与表单name相同，即将action与Actionform关联 --><!-- attribute="userForm" scope="request"相当于request.setAttribute("userForm",userForm) --><!--attribute="userForm" scope="session"相当于session.setAttribute("userForm",userForm) --><action path="/login" attribute="userForm" name="userForm" scope="request" type="com.actions.LoginAction"><!-- 这里配置跳转关系，action处理之后会返回一个结果，如果返回ok，就跳转到ok.jsp，如果返回err就跳转到err.jsp --><forward name="ok" path="/WEB-INF/ok.jsp"></forward><forward name="err" path="/WEB-INF/err.jsp"></forward></action></action-mappings>
</struts-config>

<servlet><!-- 配置actionServlet --><servlet-name>action</servlet-name><servlet-class>org.apache.struts.action.ActionServlet</servlet-class><!-- 配置struts-config.xml --><init-param><param-name>config</param-name><param-value>/WEB-INF/struts-config.xml</param-value></init-param></servlet><servlet-mapping><servlet-name>action</servlet-name><!-- 让jsp发出的.do请求经过actionServlet--><url-pattern>*.do</url-pattern></servlet-mapping>

arg0.setCharacterEncoding("utf-8");//设置接收编码arg1.setCharacterEncoding("utf-8");//设置回应编码arg2.doFilter(arg0, arg1);//必须写这句话，否则过滤后将不会往下走

<filter><filter-name>MyFilter1</filter-name><filter-class>com.myz.filters.MyFilter1</filter-class></filter><filter-mapping><filter-name>MyFilter1</filter-name><!-- 表示针对所有的都过滤 --><url-pattern>/*</url-pattern></filter-mapping>