struts的入门小用法

1、先在某个项目中创建一个struts

2、配置struts;注意:name为action的名字,用于访问该action class是action对应文件的位置;

例子:

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<package name="default" extends="struts-default">
<!-- 用户登录 -->
<action name="value" class="structwork.work1">
<result name="success">/MyJsp.jsp</result>
<result name="error">/error.jsp</result>
</action>
</package>
</struts>

3、建立一个包structwork,在包里面建立一个类work1继承actionsupport并重写父类的方法execute();

package structwork;

import com.opensymphony.xwork2.ActionSupport;

public class work1 extends ActionSupport {
public String execute() throws Exception {
if(true){
return "success";
}
return "error";
}
}

4、因为action中只能返回success 所以建立一个jsp名字为MyJsp.jsp

5、在MyJsp.jsp 里面中先添加<%@ taglib uri="/struts-tags" prefix="s" %>

再写入操作代码如下:

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="/struts-tags" prefix="s" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>


<title>My JSP 'MyJsp.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->

</head>

<body>
<s:bean name="student.student" id="stu">
在bean标签内部可以直接输出:<br>
<s:param name="name">周何骏</s:param>
(1)第一种赋值方式:
<s:property value="name"/><br>
(2)第二种赋值方式:
<!-- 该方法为参数赋值字符串必须加引号 -->
<s:param name="name" value="'周何骏'"></s:param>
<s:property value="name"/>


</s:bean>
<br>
在bean标签外部利用id取值:
<%-- 只能把<s:param name="n1" value="王致和"></s:param>
<s:property value="n1"/>
代码放入在
<s:bean name=""></s:bean>中才可以正确运行 --%>

<s:property value="#stu.name"/>
<s:debug></s:debug>


</body>
</html>

6、建立 包student,包里面建立一个类student

package student;

public class student {
private String name;

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}


}

7、最后在地址栏中输入action的地址就ok了;

原文地址:https://www.cnblogs.com/longlinxie/p/5332949.html