Struts– 例

分手后的思念是犯贱 2023-02-15 07:38 3阅读 0赞

> 下载此示例– [Struts-Logic-Match-NotMatch-Example.zip][]

Struts <logic：match>标记用于检查给定属性包含给定值的**substring** 。 例如，属性结果“ Google搜索引擎”，值“ gle”将匹配，而值“ ABC”将不匹配。 如果条件匹配，则将执行标签的主体。 Struts <logic：notMatch>的操作与此相反。

Struts的match标记具有一个必须知道的属性，名称为“ **location** ”，其值为“ **start** ”或“ **end** ”

1.  **location =“ start”** –仅在给定值显示为给定属性的起始子字符串时匹配。 例如，“ Google搜索引擎” –“ Goog”将匹配，“ gine”将不匹配。
2.  **location =“ end”** –仅在给定值显示为给定属性的结尾子字符串时匹配。 例如，“ Google搜索引擎” –“ Goog”将不匹配，“ gine”将匹配。
3.  **没有位置定义** –如果给定值显示为给定属性的子字符串，则匹配。 例如，“ Google搜索引擎” –“ Goog”将匹配，“ gine”将匹配。

这是显示<logic：match>和<logic：notMatch>用法的示例。

**LogicExampleAction.java**

package com.mkyong.common.action;
     
    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;
    
    public class LogicExampleAction extends Action{
     
    	public ActionForward execute(ActionMapping mapping,ActionForm form,
    		HttpServletRequest request,HttpServletResponse response) 
            throws Exception {
     
    		request.setAttribute("email", "mkyong123456@yahoo.com");
    		
    		return mapping.findForward("success");
    	}
     
    }

**LogicExample.jsp**

Struts - <logic:match> & <logic:notMatch>
    
    Email - mkyong123456@yahoo.com
    
    
    
    1. Is "yong" is a substring of the email? -
    
       
        
    	true
    
       
    
       
        
    	false
    
       
    
    
    
    
    
    2. Is "yongABC" is a substring of the email? -
    
       
        
    	true
    
       
    
       
        
    	false
    
       
    
    
    
    
    
    3. Is email start with "mkyong"? -
    
       
        
    	true
    
       
    
       
        
    	false
    
       
    
    
    
    
    
    4.. Is email start with "yong"? -
    
       
        
    	true
    
       
    
       
        
    	false
    
       
    
    
    
    
    
    5. Is email end with "com"? -
    
       
        
    	true
    
       
    
       
        
    	false
    
       
    
    
    
    
    
    6. Is email end with "net"? -
    
       
        
    	true
    
       
    
       
        
    	false

**struts-config.xml**

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE struts-config PUBLIC 
    "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN" 
    "http://jakarta.apache.org/struts/dtds/struts-config_1_3.dtd">
     
    <struts-config>
      <action-mappings>
    
    	 <action
    		path="/LogicTest"
    		type="com.mkyong.common.action.LogicExampleAction">
     
    		<forward name="success" path="/pages/LogicExample.jsp"/>
     
    	</action>
    				
      </action-mappings>
    </struts-config>

## 结果 ##

*http：// localhost：8080 / StrutsExample / LogicTest.do*

![Struts-logic-match-notmatch-example][]![Struts-logic-match-notmatch-example][Struts-logic-match-notmatch-example 1]

Struts - <logic:match> & <logic:notMatch>
    Email - mkyong123456@yahoo.com
    
    1. Is "yong" is a substring of the email? - true
    
    2. Is "yongABC" is a substring of the email? - false
    
    3. Is email start with "mkyong"? - true
    
    4.. Is email start with "yong"? - false
    
    5. Is email end with "com"? - true
    
    6. Is email end with "net"? - false

标签： [Struts][]

> 翻译自: [https://mkyong.com/struts/struts-logicmatch-logicnotmatch-example/][https_mkyong.com_struts_struts-logicmatch-logicnotmatch-example]

[Struts-Logic-Match-NotMatch-Example.zip]: http://www.mkyong.com/wp-content/uploads/2010/04/Struts-Logic-Match-NotMatch-Example.zip
[Struts-logic-match-notmatch-example]: http://imgconvert.csdnimg.cn/aHR0cDovL3d3dy5ta3lvbmcuY29tL3dwLWNvbnRlbnQvdXBsb2Fkcy8yMDEwLzA0L1N0cnV0cy1sb2dpYy1tYXRjaC1ub3RtYXRjaC1leGFtcGxlLmpwZw?x-oss-process=image/format,png
[Struts-logic-match-notmatch-example 1]: http://imgconvert.csdnimg.cn/aHR0cHM6Ly93d3cubWt5b25nLmNvbS93cC1jb250ZW50L3VwbG9hZHMvMjAxMC8wNC9TdHJ1dHMtbG9naWMtbWF0Y2gtbm90bWF0Y2gtZXhhbXBsZS5qcGc?x-oss-process=image/format,png
[Struts]: https://mkyong.com/tag/struts/
[https_mkyong.com_struts_struts-logicmatch-logicnotmatch-example]: https://mkyong.com/struts/struts-logicmatch-logicnotmatch-example/