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本篇文章给大家分享的是有关怎么在SpringSecurity中自定义过滤器，小编觉得挺实用的，因此分享给大家学习，希望大家阅读完这篇文章后可以有所收获，话不多说，跟着小编一起来看看吧。
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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);
}
}以上就是怎么在SpringSecurity中自定义过滤器，小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注创新互联行业资讯频道。