Question

我正在开发Spring Security Integration，我内置安全页面的应用程序运行正常。但是对于自定义登录页面，它给出了错误

The localhost page isn’t working

这是我的参考代码

在spring-security.xml中

  <http use-expressions="true">
      >

        <intercept-url pattern="/**" access="isAuthenticated()"/> <!-- this means all URL in this app will be checked if user is authenticated -->

            <form-login
            login-page="/login"
            default-target-url="/"
            authentication-failure-url="/login?error"
            username-parameter="username"
            password-parameter="password" />


        <logout logout-url="/logout" logout-success-url="/"/> <!-- the logout url we will use in JSP -->
    </http>

在login.jsp

中

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<html>
<head>
<title>Custom Login Page</title>
</head>
<body onload='document.loginForm.j_username.focus();'>
<h3>Custom Login Page</h3>

<%

String errorString = (String)request.getAttribute("error");
if(errorString != null && errorString.trim().equals("true")){
out.println("Incorrect login name or password. Please retry using correct login name and password.");
}
%>

<form name='loginForm' action="<c:url value='j_spring_security_check' />"
method='POST'>

<table>
<tr>
<td>User:</td>
<td><input type='text' name='j_username' value=''>
</td>
</tr>
<tr>
<td>Password:</td>
<td><input type='password' name='j_password' />
</td>
</tr>
<tr>
<td><input name="submit" type="submit"
value="submit" />
</td>
<td><input name="reset" type="reset" />
</td>
</tr>
</table>

</form>
</body>
</html>

在控制器中：

@RequestMapping(value = "/login", method = RequestMethod.GET)
    public ModelAndView login(ModelMap mode,
            @RequestParam(value = "error", required = false) String error,
            @RequestParam(value = "logout", required = false) String logout) {
        System.out.println("\n\t -------------");
        ModelAndView model = new ModelAndView("login");

        if (error != null) {
            model.addObject("error", "Invalid username and password!");
        }

        if (logout != null) {
            model.addObject("msg", "You've been logged out successfully.");
        }
        return model;

    }

当我使用内置形式的pulgin运行项目时，网址是

http://localhost:8080/SpringMvcSecurity/spring_security_login

并在登录后如果我手动点击网址

http://localhost:8080/SpringMvcSecurity/login

它显示了登录页面但是，如果页面显示此时间，那么我不会为什么不显示自定义配置。请帮忙。

谢谢shazin 有4个变化

需要更改RequestMapping网址中的网址名称，例如：customlogin

同名需要在spring-security.xml中替换

在spring-security.xml中添加行

替换用户名密码属性名称，以及jsp页面中显示的方式。

<intercept-url pattern="/customlogin" access="permitAll" />

Answer 1

shazin its shows neither exception nor 404 its displays message saying, localhost redirected you too many times..that's it. thanks for your reply

这是因为您的@RequestMapping值和.jsp名称为login。改变至少一个如下。

    @RequestMapping(value = "/customlogin", method = RequestMethod.GET)
    public ModelAndView login(ModelMap mode,
            @RequestParam(value = "error", required = false) String error,
            @RequestParam(value = "logout", required = false) String logout) {
        System.out.println("\n\t -------------");
        ModelAndView model = new ModelAndView("login");

        if (error != null) {
            model.addObject("error", "Invalid username and password!");
        }

        if (logout != null) {
            model.addObject("msg", "You've been logged out successfully.");
        }
        return model;

    }

并在您的配置中

<http pattern="/customlogin*" security="none"/>
<http use-expressions="true">
      >
        <intercept-url pattern="/**" access="isAuthenticated()"/> <!-- this means all URL in this app will be checked if user is authenticated -->

            <form-login
            login-page="/customlogin"
            default-target-url="/"
            authentication-failure-url="/customlogin?error"
            username-parameter="j_username"
            password-parameter="j_password" />


        <logout logout-url="/logout" logout-success-url="/"/> <!-- the logout url we will use in JSP -->
    </http>

显示自定义页面时出现Spring Security错误

1 个答案: