Strtuts2的标签——在页面上显示报错信息

缺乏、安全感 2024-04-18 13:31 54阅读 0赞

#### 前排提示：完整代码都放在GitHub上面哦，戳[这里][Link 1]：https://github.com/MarsOu1998/Struts2ErrorTag ####

package Test;
    
    import com.opensymphony.xwork2.Action;
    import com.opensymphony.xwork2.ActionSupport;
    
    public class test2 extends ActionSupport {
        
        @Override
        public String execute() throws Exception {
        
            this.addActionError("ActionError错误1");
            this.addActionError("ActionError错误2");
            this.addActionMessage("ActionMessage1");
            this.addActionMessage("ActionMessage2");
            this.addFieldError("filederror1","字段错误1");
            this.addFieldError("filederror2","字段错误2");
            return "success";
        }
    }

在struts.xml里面配置success跳转的页面

<%@ taglib prefix="s" uri="/struts-tags" %>
    <%--
      Created by IntelliJ IDEA.
      User: oushile
      Date: 2019/9/7
      Time: 09:23
      To change this template use File | Settings | File Templates.
    --%>
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>Title</title>
    </head>
    <body>
    <s:actionerror></s:actionerror>
    <s:actionmessage></s:actionmessage>
    <s:fielderror value="filederror1"></s:fielderror>
    </body>
    </html>

值得一提的事，这些错误标签会把里面所有的内容都显示出来，即使使用filederror，并制定了value，但是还是没什么用。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNTc2MDI4_size_16_color_FFFFFF_t_70]

[Link 1]: https://github.com/MarsOu1998/Struts2ErrorTag
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNTc2MDI4_size_16_color_FFFFFF_t_70]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/c634da7e571a4bc6b7e261b9707327b5.png