Struts2-1

    xiaoxiao2025-01-19  7

    1.开启“开发模式”: <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <span style="color:#ff0000;"> <!-- 启用开发模式,这样当代码发生变化时,能在浏览器页面立即响应,而不用重新启动服务器 --> <constant name="struts.devMode" value="true"></constant> </span> <package name="helloWorld" extends="struts-default"> <action name="test" class="com.atguigu.struts2.helloworld.Product" method="test"> <result>/index.jsp</result> </action> </package> </struts>

     

    2.Struts2的类文件加载目录:D:/云盘同步文件夹/JAVA开发/JAR包/struts-2.3.15.3/src/core/src/main/java

     

    3.Struts2的doc的加载目录:file:/D:/云盘同步文件夹/JAVA开发/JAR包/struts-2.3.30/docs/struts2-core/apidocs/

     

    4.Struts2的DTD文件:http://struts.apache.org/dtds/struts-2.3.dtd

     

    5.要用就用ActionSupport,即

    public class Product extends ActionSupport { @Override public String execute() throws Exception { // TODO Auto-generated method stub return super.execute(); } }

    6.文件路径问题

     

    <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <span style="color:#ff0000;"><% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> </span> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <span style="color:#ff0000;"><base href="<%=basePath%>"/> </span><title>Insert title here</title> </head> <body> <a href="product-input.action">Product Input</a> <br><br> <a href="test.action">Test</a> </body> </html>

    7.动态方法调用(DMI)

     

    8.用通配符匹配action标签

    <action name="*_*" class="com.javaweb.struts2.action.{1}Action" method="{2}"> <result>/{1}_{2}.jsp</result> </action>

     9.Action接收参数的3种方式:

    ①.用setName()方法来赋值。

    ②用实体类来赋值。

    ③ModelDriver模型驱动接口来实现赋值。

     

    10.中文乱码问题,在struts.xml文件中加入:

    <constant name="struts.i18n.encoding" value="UTF-8"></constant>

     

     11.值栈的访问和使用。

     

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