Question

我想在struts 2上创建一个简单的登录表单，但由于某种原因我在查看输入字段时遇到问题，并且在我提交用户的名称后没有出现......

这是代码

Struts重定向到我的struts.xml

我的struts.xml

<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
    <constant name="struts.enable.DynamicMethodInvocation" value="false"/>
    <!-- devMode equals mode debug information and reload everything for every request -->
    <constant name="struts.devMode" value="true" />

    <package name="user" namespace="/User" extends="struts-default">
        <action name="Login">
            <result>Login.jsp</result>
        </action>
        <action name="DashboardAction" class="action.DashboardAction">
            <result name="success">Dashboard.jsp</result>
        </action>
    </package>




</struts>

Bean类

DashboardAction.java

package action;

public class DashboardAction {
    private String username;

    public String execute(){
        return "success";
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }
public String getPassword() {
    return password;
}

public void setPassword(String password) {
    this.password = password;
}



}

JSPs

Login.jsp

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Login</title>
    </head>
    <body>
        <h1>Struts 2 Login Test</h1>

           <form action="DashboardAction" id="form1" method="post" autocomplete="off">
                <div class="input placeholder">
                    <s:textfield name="username" label="Utilizador"/>
                </div>
                <div class="input placeholder">
                    <s:password name="password" label="Password"/>
                </div>
                <div class="submit">
                    <s:submit value="Entrar" method="execute"/>
                </div>
            </form>




    </body>
</html>

Dashboard.jsp

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Welcome User</title>
    </head>
    <body>
        <h1>Hello
        <s:property value="username"/>
        </h1>
    </body>
</html>

在我按提交后，为什么没有这项工作？应该去Dashboard.jsp？

Answer 1

你走了：

 <result name="success">/Dashboard.jsp</result>

您需要在结果中指定JSP的完整路径。请注意/。您需要对其他结果页面执行相同操作，包括Login.jsp

Answer 2

您应该将表单映射到接受提交数据的操作。使用Struts标签

<%@ taglib prefix="s" uri="/struts-tags" %>

<s:form action="Welcome" ...
  <s:textfield name="username" ...
  <s:password name="unknown" ...

无法映射密码字段，因为在您的操作中没有属性。如果你创建它可能是

private String unknown;

public String getUnknown() {
    return unknown;
}

public void setUnknown(String unknown) {
    this.unknown = unknown;
}

Answer 3

在您的操作类中定义属性密码，如下所示。

<强> DashboardAction.java

package action;

public class DashboardAction {
    private String username;
    private String password; // you don't have this line in your action class. 
    public String execute(){
        return "success";
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }
public String getPassword() {
    return password;
}

public void setPassword(String password) {
    this.password = password;
}


}

Struts 2登录表单问题

3 个答案: