1、处理表单数据
GreetingAction public class GreetingAction extends ActionSupport{ private String username; public String execute() throws Exception{ if(username==null||"".equals(username)){ return ERROR; }else{ return SUCCESS; } } public void setUsername(String username){ this.username=username; } public String getUsername(){ return username; } } struts.xml <struts> <package name="myPackage" extends="struts-default"> <action name="greeting" class="com.action.GreetingAction"> <result name="success">success.jsp</result> <result name="error">error.jsp</result> </action> </package> </struts> index.jsp <body> <form action="greeting.action" method="post"> 请输入你的姓名：<input type="text" name="username"/> <input type="submit"/> </form> </body> success.jsp <%@ taglib prefix="s" uri="/struts-tags" %> <body> <font color="red"> <s:property value="username"/> </font> 您好，欢迎来到本站 </body> error.jsp <body> <font color="red">错误：您没有输入姓名！</font> </body>
2、使用Map类型的request、session和application对象
public class TestAction extends ActionSupport{ private Map<String,Object> request; private Map<String,Object> response; private Map<String,Object> application; public TestAction(){ ActionContext context=ActionContext.getContext(); request=Map<String,Object> context.get("request"); session=context.getSession(); application=context.getApplication(); } public String execute()throws Exception{ String info="明日科技"; request.put("info",info); session.put("info",info); application.put("info",info); return SUCCESS; } } struts.xml <struts> <constant name="struts.devMode" value="true"/> <package name="myPackage" extends="struts-default"> <action name="testAction" class="com.action.TestAction"> <result>success.jsp</result> </action> </package> </struts> success.jsp <body> request范围内的info值 <font color="red"> <%=request.getAttribute("info");%> </font> <font color="red"> <%=session.getAttribute("info");%> </font> <font color="red"> <%=application.getAttribute("info");%> </font> </body> index.jsp <body> <a href="testAction.action">Map类型的request、session、application</a> <br/> </body>