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Spring Security 4 安全视图片段使用标签（Spring Security 标签）

2016-05-05 14:31 567 查看

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原文地址： http://websystique.com/spring-security/spring-security-4-secure-view-layer-using-taglibs/
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本教程向你展示怎样创建安全视图层，Spring MVC web 应用中，使用Spring
Security 标签，基于用户角色显示或者隐藏部分jsp或者视图。

第一步,想使用Spring Security标签需要在pom.xml文件中添加 spring-security-taglibs依赖

<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-taglibs</artifactId>
<version>4.0.1.RELEASE</version>
</dependency>

下一步，在views或者jsp页面头添加包含标签

<%@ taglib prefix="sec" uri="http://www.springframework.org/security/tags"%>

最后，我们可以使用Spring Security 表单式中hasRole,
hasAnyRole等标签，如下：

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="sec" uri="http://www.springframework.org/security/tags"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Welcome page</title>
</head>
<body>
Dear <strong>${user}</strong>, Welcome to Home Page.
<a href="<c:url value="/logout" />">Logout</a>

<br/>
<br/>
<div>
<label>View all information| This part is visible to Everyone</label>
</div>

<br/>
<div>
<sec:authorize access="hasRole('ADMIN')">
<label><a href="#">Edit this page</a> | This part is visible only to ADMIN</label>
</sec:authorize>
</div>

<br/>
<div>
<sec:authorize access="hasRole('ADMIN') and hasRole('DBA')">
<label><a href="#">Start backup</a> | This part is visible only to one who is both ADMIN & DBA</label>
</sec:authorize>
</div>
</html

如果你需要根据角色显示或者隐藏视图中的片段，可以参考上面的例子。

下面是本例中 Security Configuration 的配置：

package com.websystique.springsecurity.configuration;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

@Configuration
@EnableWebSecurity
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {

@Autowired
public void configureGlobalSecurity(AuthenticationManagerBuilder auth) throws Exception {
auth.inMemoryAuthentication().withUser("bill").password("abc123").roles("USER");
auth.inMemoryAuthentication().withUser("admin").password("root123").roles("ADMIN");
auth.inMemoryAuthentication().withUser("dba").password("root123").roles("ADMIN","DBA");
}

@Override
protected void configure(HttpSecurity http) throws Exception {

http.authorizeRequests()
.antMatchers("/", "/home").access("hasRole('USER') or hasRole('ADMIN') or hasRole('DBA')")
.and().formLogin().loginPage("/login")
.usernameParameter("ssoId").passwordParameter("password")
.and().exceptionHandling().accessDeniedPage("/Access_Denied");
}
}

上面配置对应的xml配置如下：

<beans:beans xmlns="http://www.springframework.org/schema/security"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-4.0.xsd"> 
<http auto-config="true" >
<intercept-url pattern="/"     access="hasRole('USER') or hasRole('ADMIN') or hasRole('DBA')" />
<intercept-url pattern="/home" access="hasRole('USER') or hasRole('ADMIN') or hasRole('DBA')" />
<form-login  login-page="/login"
username-parameter="ssoId"
password-parameter="password"
authentication-failure-url="/Access_Denied" />
</http>

<authentication-manager >
<authentication-provider>
<user-service>
<user name="bill"  password="abc123"  authorities="ROLE_USER" />
<user name="admin" password="root123" authorities="ROLE_ADMIN" />
<user name="dba"   password="root123" authorities="ROLE_ADMIN,ROLE_DBA" />
</user-service>
</authentication-provider>
</authentication-manager>

</beans:beans>

controller

package com.websystique.springsecurity.controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
public class HelloWorldController {

@RequestMapping(value = { "/", "/home" }, method = RequestMethod.GET)
public String homePage(ModelMap model) {
model.addAttribute("user", getPrincipal());
return "welcome";
}

@RequestMapping(value = "/Access_Denied", method = RequestMethod.GET)
public String accessDeniedPage(ModelMap model) {
model.addAttribute("user", getPrincipal());
return "accessDenied";
}

@RequestMapping(value = "/login", method = RequestMethod.GET)
public String loginPage() {
return "login";
}

@RequestMapping(value="/logout", method = RequestMethod.GET)
public String logoutPage (HttpServletRequest request, HttpServletResponse response) {
Authentication auth = SecurityContextHolder.getContext().getAuthentication();
if (auth != null){
new SecurityContextLogoutHandler().logout(request, response, auth);
}
return "redirect:/login?logout";
}

private String getPrincipal(){
String userName = null;
Object principal = SecurityContextHolder.getContext().getAuthentication().getPrincipal();

if (principal instanceof UserDetails) {
userName = ((UserDetails)principal).getUsername();
} else {
userName = principal.toString();
}
return userName;
}

}

其他代码和本系列其他文章一样。