我的程序感觉没有调用validate();
每次跳转都是显示info的内容，而不是经过validate()判断是否符合;
ActionForm:
package form;
import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import jdk.nashorn.internal.ir.RuntimeNode.Request;
public class HelloForm extends ActionForm{
private String info;
@Override
public ActionErrors validate(ActionMapping mapping, ServletRequest req) {
ActionErrors errors = new ActionErrors();
if(this.info == null || info.equals("")){
errors.add("info", new ActionMessage("error.info"));
}
return errors;
}
@Override
public void reset(ActionMapping mapping, HttpServletRequest request) {
}
public String getInfo() {
return info;
}
public void setInfo(String info) {
this.info = info;
}
}
JSP：
<%@ page language="java" pageEncoding="GBK"%>
<%@ taglib uri="struts/bean" prefix="bean"%>
<%@ taglib uri="struts/html" prefix="html"%>
<%@ taglib uri="struts/logic" prefix="logic"%>
<html:html lang="true">
<head>
<html:base />
<title>hello.jsp</title>
</head>
<body>
<html:errors/>
<logic:present name="msg" scope="request">
<h2>${msg}</h2>
</logic:present>
<html:form action="hello.do" method="post">
请输入信息：<html:text property="info"></html:text>
<html:submit value="显示"></html:submit>
</html:form>
</body>
</html:html>
Struts-config:
<?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">
<struts-config>
<form-beans>
<form-bean name="helloForm"
type="form.HelloForm" />
</form-beans>
<global-exceptions />
<global-forwards />
<action-mappings>
<action attribute="helloForm" input="/hello.jsp"
name="helloForm" path="/hello" scope="request"
type="action.HelloAction">
<forward name="show" path="/hello.jsp"></forward>
</action>
</action-mappings>
<message-resources parameter="action.ApplicationResources" />
</struts-config>
