SpringSecurity学习之自定义过滤器的实现代码
这篇文章主要介绍了SpringSecurity学习之自定义过滤器的实现代码，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧我们系统中的认证场景通常比较复杂，比如说用户被锁定无法登录，限制登录ip等。而springsecuriy最基本的是基于用户与密码的形式进行认证，由此可知它的一套验证规范根本无法满足业务需要，因此扩展势在必行。那么我们可以考虑自己定义filter添加至springsecurity的过滤器栈当中，来实现我们自己的验证需要。
本例中，基于前篇的数据库的student表来模拟一个简单的例子：当student的jointime在当天之后，那么才允许登录
一、创建自己定义的filter
我们先在web包下创建好几个包并定义如下几个类
customerauthfilter:
package com.bdqn.lyrk.security.study.web.filter;
import com.bdqn.lyrk.security.study.web.authentication.userjointimeauthentication;
import org.springframework.security.authentication.authenticationmanager;
import org.springframework.security.core.authentication;
import org.springframework.security.core.authenticationexception;
import org.springframework.security.web.authentication.abstractauthenticationprocessingfilter;
import org.springframework.security.web.util.matcher.antpathrequestmatcher;
import javax.servlet.servletexception;
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
import java.io.ioexception;
public class customerauthfilter extends abstractauthenticationprocessingfilter {
private authenticationmanager authenticationmanager;
public customerauthfilter(authenticationmanager authenticationmanager) {
super(new antpathrequestmatcher("/login", "post"));
this.authenticationmanager = authenticationmanager;
}
@override
public authentication attemptauthentication(httpservletrequest request, httpservletresponse response) throws authenticationexception, ioexception, servletexception {
string username = request.getparameter("username");
userjointimeauthentication usernamepasswordauthenticationtoken =new userjointimeauthentication(username);
authentication authentication = this.authenticationmanager.authenticate(usernamepasswordauthenticationtoken);
if (authentication != null) {
super.setcontinuechainbeforesuccessfulauthentication(true);
}
return authentication;
}
}
该类继承abstractauthenticationprocessingfilter，这个filter的作用是对最基本的用户验证的处理，我们必须重写attemptauthentication方法。authentication接口表示授权接口，通常情况下业务认证通过时会返回一个这个对象。super.setcontinuechainbeforesuccessfulauthentication(true) 设置成true的话，会交给其他过滤器处理。
二、定义userjointimeauthentication
package com.bdqn.lyrk.security.study.web.authentication;
import org.springframework.security.authentication.abstractauthenticationtoken;
public class userjointimeauthentication extends abstractauthenticationtoken {
private string username;
public userjointimeauthentication(string username) {
super(null);
this.username = username;
}
@override
public object getcredentials() {
return null;
}
@override
public object getprincipal() {
return username;
}
}
自定义授权方式，在这里接收username的值处理，其中getprincipal我们可以用来存放登录名，getcredentials可以存放密码，这些方法来自于authentication接口
三、定义authenticationprovider
package com.bdqn.lyrk.security.study.web.authentication;
import com.bdqn.lyrk.security.study.app.pojo.student;
import org.springframework.security.authentication.authenticationprovider;
import org.springframework.security.core.authentication;
import org.springframework.security.core.authenticationexception;
import org.springframework.security.core.userdetails.userdetails;
import org.springframework.security.core.userdetails.userdetailsservice;
import java.util.date;
/**
* 基本的验证方式
*
* @author chen.nie
* @date 2018/6/12
**/
public class userjointimeauthenticationprovider implements authenticationprovider {
private userdetailsservice userdetailsservice;
public userjointimeauthenticationprovider(userdetailsservice userdetailsservice) {
this.userdetailsservice = userdetailsservice;
}
/**
* 认证授权，如果jointime在当前时间之后则认证通过
* @param authentication
* @return
* @throws authenticationexception
*/
@override
public authentication authenticate(authentication authentication) throws authenticationexception {
string username = (string) authentication.getprincipal();
userdetails userdetails = this.userdetailsservice.loaduserbyusername(username);
if (!(userdetails instanceof student)) {
return null;
}
student student = (student) userdetails;
if (student.getjointime().after(new date()))
return new userjointimeauthentication(username);
return null;
}
/**
* 只处理userjointimeauthentication的认证
* @param authentication
* @return
*/
@override
public boolean supports(class<?> authentication) {
return authentication.getname().equals(userjointimeauthentication.class.getname());
}
}
authenticationmanager会委托authenticationprovider进行授权处理，在这里我们需要重写support方法，该方法定义provider支持的授权对象，那么在这里我们是对userjointimeauthentication处理。
四、websecurityconfig
package com.bdqn.lyrk.security.study.app.config;
import com.bdqn.lyrk.security.study.app.service.userservice;
import com.bdqn.lyrk.security.study.web.authentication.userjointimeauthenticationprovider;
import com.bdqn.lyrk.security.study.web.filter.customerauthfilter;
import org.springframework.beans.factory.annotation.autowired;
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.builders.websecurity;
import org.springframework.security.config.annotation.web.configuration.enablewebsecurity;
import org.springframework.security.config.annotation.web.configuration.websecurityconfigureradapter;
import org.springframework.security.web.authentication.usernamepasswordauthenticationfilter;
/**
* spring-security的相关配置
*
* @author chen.nie
* @date 2018/6/7
**/
@enablewebsecurity
public class websecurityconfig extends websecurityconfigureradapter {
@autowired
private userservice userservice;
@override
protected void configure(httpsecurity http) throws exception {
/*
1.配置静态资源不进行授权验证
2.登录地址及跳转过后的成功页不需要验证
3.其余均进行授权验证
*/
http.
authorizerequests().antmatchers("/static/**").permitall().
and().authorizerequests().antmatchers("/user/**").hasrole("7022").
and().authorizerequests().anyrequest().authenticated().
and().formlogin().loginpage("/login").successforwardurl("/toindex").permitall()
.and().logout().logouturl("/logout").invalidatehttpsession(true).deletecookies().permitall()
;
http.addfilterbefore(new customerauthfilter(authenticationmanager()), usernamepasswordauthenticationfilter.class);
}
@override
protected void configure(authenticationmanagerbuilder auth) throws exception {
//设置自定义userservice
auth.userdetailsservice(userservice);
auth.authenticationprovider(new userjointimeauthenticationprovider(userservice));
}
@override
public void configure(websecurity web) throws exception {
super.configure(web);
}
}
在这里面我们通过httpsecurity的方法来添加我们自定义的filter，一定要注意先后顺序。在authenticationmanagerbuilder当中还需要添加我们刚才定义的authenticationprovider
启动成功后，我们将student表里的jointime值改为早于今天的时间，进行登录可以发现：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持CodeAE代码之家。
原文链接：https://www.cnblogs.com/niechen/p/9174096.html
http://www.zzvips.com/article/175758.html
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