spring security4.1.3配置以及踩过的坑

https://blog.csdn.net/honghailiang888/article/details/53520557

spring security完全可以作为一个专门的专题来说，有一个专题写的不错http://www.iteye.com/blogs/subjects/spring_security，我这里主要是针对4.1.3进行配置说明

一、所需的库文件

//spring-security
compile 'org.springframework.security:spring-security-web:4.1.3.RELEASE'
compile 'org.springframework.security:spring-security-config:4.1.3.RELEASE'
compile 'org.springframework.security:spring-security-taglibs:4.1.3.RELEASE'

二、web配置

从4以后security就只吃java配置了，具体可以看下《spring in action第四版》，我这里还是使用xml配置

过滤器配置，security是基于过滤器的，web.xml

<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>
org.springframework.web.filter.DelegatingFilterProxy
</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

需要注意的是，如果配置了sitemesh装饰器，如果在装饰器页面中用到了security，比如标签，那么security过滤器需要配置在sitemesh之前，否则装饰器页中的<sec:authorize>标签可能不起作用

<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>
org.springframework.web.filter.DelegatingFilterProxy
</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter>
<filter-name>sitemesh</filter-name>
<filter-class>
org.sitemesh.config.ConfigurableSiteMeshFilter
</filter-class>
<init-param>
<param-name>ignore</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>sitemesh</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

装饰器页面中的使用

<sec:authorize access="!hasRole('ROLE_USER')">
<li>你好，欢迎来到Mango！<a href="<c:url value='/login'/>" class="current">登录</a></li>
</sec:authorize>
<sec:authorize access="hasRole('ROLE_USER')">
<li><sec:authentication property="principal.username"/>欢迎光临Mango！<a href="<c:url value='/logout'/>" class="current">退出</a></li>
</sec:authorize>

三、security配置文件配置

applicationContext-security.xml

<?xml version="1.0" encoding="UTF-8"?>
<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.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security.xsd">
<http auto-config="true" use-expressions="true" >
<form-login
login-page="/login"
authentication-failure-url="/login?error"
login-processing-url="/login"
always-use-default-target="false"
authentication-success-handler-ref="myAuthenticationSuccessHandler" />
<logout logout-url="/logout"
logout-success-url="/"
invalidate-session="true"
delete-cookies="JSESSIONID"/>
<csrf disabled="true" />
<intercept-url pattern="/order/*" access="hasRole('ROLE_USER')"/>
</http>
<authentication-manager>
<authentication-provider user-service-ref="myUserDetailsService">
<password-encoder hash="md5">
</password-encoder>
</authentication-provider>
</authentication-manager>
</ beans:beans>

这里配置了自定义登录界面/login，还需要配置控制器条撞到login.jsp页面，如果字段使用默认值为username和password，当然也可以用 form-login标签中的属性username-parameter="username"password-parameter="password"进行设置，这里的值要和登录页面中的字段一致。login.jsp

<%@ page language="java" pageEncoding="UTF-8" contentType="text/html;charset=UTF-8"%>
<%@ include file="../includes/taglibs.jsp"%>
<!DOCTYPE html>
<html>
<head>
<title>Mango-Login</title>
<meta name="menu" content="home" />
</head>
<body>
<h1>请登录!</h1>
<div style="text-align:center">
<form action="<c:url value='/login' />" method="post">
<c:if test="${not empty error}">
<p style="color:red">${error}</p>
</c:if>
<table>
<tr>
<td>用户名：</td>
<td><input type="text" name="username"/></td>
</tr>
<tr>
<td>密码：</td>
<td><input type="password" name="password"/></td>
</tr>
<tr>
<td colspan="2" align="center">
<input type="submit" value="登录"/>
<input type="reset" value="重置"/>
</td>
</tr>
</table>
</form>
</div>
</body>
</html>

其中，form action的值要和配置文件中login-process-url的值一致，提交后UsernamePasswordAuthenticationFilter才能对其进行授权认证。
另外认证是采用的自定义myUserDetailsService获取用户信息方式，由于该项目中集成的是Hibernate，所以自己定义了，security系统中是支持jdbc进行获取的

package com.mango.jtt.springSecurity;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
import com.mango.jtt.po.MangoUser;
import com.mango.jtt.service.IUserService;
/**
* 从数据库中获取信息的自定义类
*
* @author HHL
*
*/
@Service
public class MyUserDetailsService implements UserDetailsService {
@Autowired
private IUserService userService;
/**
* 获取用户信息，设置角色
*/
@Override
public UserDetails loadUserByUsername(String username)
throws UsernameNotFoundException {
// 获取用户信息
MangoUser mangoUser = userService.getUserByName(username);
if (mangoUser != null) {
// 设置角色
return new User(mangoUser.getUserName(), mangoUser.getPassword(),
AuthorityUtils.createAuthorityList(mangoUser.getRole()));
}
throw new UsernameNotFoundException("User '" + username
+ "' not found.");
}
}

认证成功之后也是自定义了处理类myAuthenticationSuccessHandler，该处理类继承了SavedRequestAwareAuthenticationSuccessHandler，实现了保存请求信息的操作，如果不配置，默认的也是交给SavedRequestAwareAuthenticationSuccessHandler处理，因为在解析security配置文件时，如果没有配置会将此设置为默认值。

package com.mango.jtt.springSecurity;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler;
import org.springframework.stereotype.Component;
import com.mango.jtt.po.MangoUser;
import com.mango.jtt.service.IUserService;
/**
* 登录后操作
*
* @author HHL
* @date
*
*/
@Component
public class MyAuthenticationSuccessHandler extends
SavedRequestAwareAuthenticationSuccessHandler {
@Autowired
private IUserService userService;
@Override
public void onAuthenticationSuccess(HttpServletRequest request,
HttpServletResponse response, Authentication authentication)
throws IOException, ServletException {
// 认证成功后，获取用户信息并添加到session中
UserDetails userDetails = (UserDetails) authentication.getPrincipal();
MangoUser user = userService.getUserByName(userDetails.getUsername());
request.getSession().setAttribute( "user", user);
super.onAuthenticationSuccess(request, response, authentication);
}
}

认证失败则回到登录页，只不过多了error，配置为authentication-failure-url="/login?error" 控制类会对其进行处理

/**
*
*/
package com.mango.jtt.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
/**
* @author HHL
*
* @date 2016年12月8日
*
* 用户控制类
*/
@Controller
public class UserController {
/**
* 显示登录页面用，主要是显示错误信息
*
* @param model
* @param error
* @return
*/
@RequestMapping("/login")
public String login(Model model,
@RequestParam(value = "error", required = false) String error) {
if (error != null) {
model.addAttribute( "error", "用户名或密码错误");
}
return "login";
}
}

另外，从spring security3.2开始，默认就会启用csrf保护，本次将csrf保护功能禁用<csrf disabled="true" />，防止页面中没有配置crsf而报错“Could not verify the provided CSRF token because your session was not found.”，如果启用csrf功能的话需要将login和logout以及上传功能等都需要进行相应的设置，因此这里先禁用csrf保护功能具体可参考spring-security4.1.3官方文档

四，后面会对认证过程，以及如何认证的进行详细说明。

完整代码：http://download.csdn.net/detail/honghailiang888/9705858

或 https://github.com/honghailiang/SpringMango