生活加油:摘一句子:

“我希望自己能写这样的诗。我希望自己也是一颗星星。如果我会发光,就不必害怕黑暗。如果我自己是那么美好,那么一切恐惧就可以烟消云散。于是我开始存下了一点希望—如果我能做到,那么我就战胜了寂寞的命运。”

                                                                                 -----------------------------王小波《我在荒岛上迎接黎明》

初步嘗試一下:

新建项目,导入依赖

package com.liruilong;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.RestController;

/**
* @Description : security学习
* @Author: Liruilong
* @Date: 2019/12/24 12:54
*/
@RestController
public class HollerController {
@GetMapping("/hello")
public String hello(){
return "hello Security";
}
}

访问接口:请求都被保护起来,用户名默认user,密码为控制台打印的字符串.

Spring Security 配置笔记_spring

Spring Security 配置笔记_spring_02

 手工配置用户名和密码:

一,配置类方式:

package com.liruilong.securityl.demo;

import org.springframework.context.annotation.Bean;
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.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.password.NoOpPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;

/**
* @Description : security配置
* @Author: Liruilong
* @Date: 2019/12/24 13:13
*/
@Configuration
public class config extends WebSecurityConfigurerAdapter {

/**
* @Author Liruilong
* @Description 密码处理,告诉系统不加密访问
* @Date 13:20 2019/12/24
* @Param []
* @return org.springframework.security.crypto.password.PasswordEncoder
**/

@Bean
PasswordEncoder passwordEncoder(){
return NoOpPasswordEncoder.getInstance();
}

/**
* @Author Liruilong
* @Description 配置用户名密码.密码必须加密
* @Date 13:16 2019/12/24
* @Param [auth]
* @return void
**/

@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.inMemoryAuthentication()
.withUser("liruilong").password("123").roles("admin")
.and()
.withUser("liruilongs").password("123").roles("user");

}

}

配置文件方式:

Spring Security 配置笔记_spring_03

 

HttpScurity的简单配置:


基于内存的认证,以自定义类继承自 webSecurityConfigurerAdapter ,进行自定义配置。


package com.liruilong.securityl.demo;


/**
* @Description : security配置
* @Author: Liruilong
* @Date: 2019/12/24 13:13
*/
@Configuration
public class config extends WebSecurityConfigurerAdapter {

/**
* @Author Liruilong
* @Description 密码处理,告诉系统不加密访问
* @Date 13:20 2019/12/24
* @Param []
* @return org.springframework.security.crypto.password.PasswordEncoder
**/

@Bean
PasswordEncoder passwordEncoder(){
return NoOpPasswordEncoder.getInstance();
}

/**
* @Author Liruilong
* @Description 配置用户名密码.密码必须加密
* @Date 13:16 2019/12/24
* @Param [auth]
* @return void
**/

@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.inMemoryAuthentication()
.withUser("liruilong").password("123").roles("admin")
.and()
.withUser("liruilongs").password("123").roles("user");

}

@Override
protected void configure(HttpSecurity http) throws Exception {
//开启配置,开启 HtψSecurity 的配直
http.authorizeRequests()
// 指定admin角色可以访问该路径
.antMatchers("/admin/**").hasRole("admin")
// 指定admin和user可以访问该路径
.antMatchers("/user/**").hasAnyRole("admin", "user")
// 剩下的请求登录之后就可以访问
.anyRequest().authenticated()
.and()
// 表单登录的url,请求地址
.formLogin()
.loginProcessingUrl("/dolog")
.permitAll()
.and()
// 关闭csrf
.csrf().disable();

}
}

表单登录的详细配置:

@Override
protected void configure(HttpSecurity http) throws Exception {
//开启配置
http.authorizeRequests()
// 指定admin角色可以访问该路径
.antMatchers("/admin/**").hasRole("admin")
// 指定admin和user可以访问该路径
.antMatchers("/user/**").hasAnyRole("admin", "user")
// 剩下的请求登录之后就可以访问
.anyRequest().authenticated()
.and()
// 表单登录的url,请求地址
.formLogin()
// url,请求地址
.loginProcessingUrl("/dolog")
// 登录页面
.loginPage("login")
// 修改默认的键,默认为username和password
.usernameParameter("uname")
.passwordParameter("passwd")
// 前后端分离,登录成功的处理
.successHandler(new AuthenticationSuccessHandler() {
@Override
public void onAuthenticationSuccess(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Authentication authentication) throws IOException, ServletException {
//authentication里保存了登录成功的用户信息
httpServletResponse.setContentType("application/json;charset=utf-8");
PrintWriter out = httpServletResponse.getWriter();
Map<String, Object> map = new HashMap<>();
map.put("status", 200);
// 登录成功的用户信息
map.put("mes", authentication.getPrincipal());
// 返回一个json
out.write(new ObjectMapper().writeValueAsString(map));
out.flush();
out.close();
}
})
//前后端不分,页面跳转
.successForwardUrl("成功跳转")
//登录失败的处理
.failureHandler(new AuthenticationFailureHandler() {
@Override
public void onAuthenticationFailure(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, AuthenticationException e) throws IOException, ServletException {
httpServletResponse.setContentType("application/json;charset=utf-8");
PrintWriter out = httpServletResponse.getWriter();
Map<String, Object> map = new HashMap<>();
map.put("status", 401);
if (e instanceof LockedException){
map.put("msg","账户被锁定请联系管理员!");
}else if(e instanceof CredentialsExpiredException){
map.put("msg","密码过期请联系管理员!");
}else if (e instanceof AccountExpiredException){
map.put("msg","账户过期请联系管理员!");
}else if(e instanceof DisabledException){
map.put("msg","账户被禁用请联系管理员!");
}else if (e instanceof BadCredentialsException){
map.put("msg","用户名密码输入错误,请重新输入!");
}
out.write(new ObjectMapper().writeValueAsString(map));
out.flush();
out.close();
}
})
// 前后端不分跳转
.failureForwardUrl("失败跳转")
.permitAll()
.and()
// 关闭csrf
.csrf().disable();



}
}

 登录接口为 "/login”,即可以直接调用“/login”接口,发起一个 POST 请求进行登录,登录参数中用户 名必须命名为 usemam巳,密码必须命名为 password,配置了 loginProcessingUrl 接口主要方便或者移动端调用登录接口 。最后还配置了 permitAll,表示和登录相关的接口都不需要认 证即可访问。 

anonymous() 允许匿名用户访问
permitAll() 无条件允许访问

注销登录的配置:

@Override
protected void configure(HttpSecurity http) throws Exception {
//开启配置
http.authorizeRequests()
// 指定admin角色可以访问该路径
.antMatchers("/admin/**").hasRole("admin")
// 指定admin和user可以访问该路径
.antMatchers("/user/**").hasAnyRole("admin", "user")
// 剩下的请求登录之后就可以访问
.anyRequest().authenticated()
.and()
// 表单登录的url,请求地址
.formLogin()
// url,请求地址
.loginProcessingUrl("/dolog")
// 登录页面
.loginPage("login")
// 修改默认的键,默认为username和password
.usernameParameter("uname")
.passwordParameter("passwd")
// 前后端分离,登录成功的处理
.successHandler(new AuthenticationSuccessHandler() {
@Override
public void onAuthenticationSuccess(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Authentication authentication) throws IOException, ServletException {
//authentication里保存了登录成功的用户信息
httpServletResponse.setContentType("application/json;charset=utf-8");
PrintWriter out = httpServletResponse.getWriter();
Map<String, Object> map = new HashMap<>();
map.put("status", 200);
// 登录成功的用户信息
map.put("mes", authentication.getPrincipal());
// 返回一个json
out.write(new ObjectMapper().writeValueAsString(map));
out.flush();
out.close();
}
})
//前后端不分,页面跳转
.successForwardUrl("成功跳转")
//登录失败的处理
.failureHandler(new AuthenticationFailureHandler() {
@Override
public void onAuthenticationFailure(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, AuthenticationException e) throws IOException, ServletException {
httpServletResponse.setContentType("application/json;charset=utf-8");
PrintWriter out = httpServletResponse.getWriter();
Map<String, Object> map = new HashMap<>();
map.put("status", 401);
if (e instanceof LockedException){
map.put("msg","账户被锁定请联系管理员!");
}else if(e instanceof CredentialsExpiredException){
map.put("msg","密码过期请联系管理员!");
}else if (e instanceof AccountExpiredException){
map.put("msg","账户过期请联系管理员!");
}else if(e instanceof DisabledException){
map.put("msg","账户被禁用请联系管理员!");
}else if (e instanceof BadCredentialsException){
map.put("msg","用户名密码输入错误,请重新输入!");
}
out.write(new ObjectMapper().writeValueAsString(map));
out.flush();
out.close();
}
})
.failureForwardUrl("失败跳转")
// 任何角色可以访问
.permitAll()
.and()
.logout()
// 注销请求路劲
.logoutUrl("/logout")
// 注销成功的处理
.logoutSuccessHandler(new LogoutSuccessHandler() {
@Override
public void onLogoutSuccess(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Authentication authentication) throws IOException, ServletException {
httpServletResponse.setContentType("application/json;charset=utf-8");
PrintWriter out = httpServletResponse.getWriter();
out.write(new ObjectMapper().writeValueAsString(new ObjectMapper().writeValueAsString("注销成功!")));
out.flush();
out.close();
}
})
.logoutSuccessUrl("注销成功的跳转")
.and()
// 关闭csrf
.csrf().disable();



}
}

多HttpSecurity配置: 

config 不需要继承 WebSecurityConfigurerAdapter, 在 MultiHttpSecurityConfig 中创建静态内部类继承 WebSecurityConfigurerAdapter 即可,静态 内部类上添加@Configuration 注解和@Order 注解,@Order 注解表示该配直的优先级,数字 越小优先级越大,未加@Order 注解的配直优先级最小。 

/**
* @Description : 多HttpSecurity配置
* @Author: Liruilong
* @Date: 2019/12/24 17:01
*/

@Configuration
public class MultiHttpSecurity {
@Bean
PasswordEncoder passwordEncoder(){
return NoOpPasswordEncoder.getInstance();
}
@Autowired
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.inMemoryAuthentication()
.withUser("liruilong").password("123").roles("admin")
.and()
.withUser("liruilongs").password("123").roles("user");
}
@Configuration
@Order(1)
public static class AdminSecurityConfig extends WebSecurityConfigurerAdapter{
@Override
protected void configure(HttpSecurity http) throws Exception {
//开启配置
http.antMatcher("/admin/**").authorizeRequests().anyRequest().hasAnyRole("admin")
}
}
@Configuration
public static class OtherSecurityConfig extends WebSecurityConfigurerAdapter{
@Override
protected void configure(HttpSecurity http) throws Exception {
//开启配置
http.authorizeRequests().anyRequest().authenticated()
.and()
.formLogin()
.failureForwardUrl("/dolog")
.permitAll()
.and()
.csrf().disable();
}
}
}

密码加盐处理:

通过BCryptPasswordEncoder生成密码密文,

void contextLoads() {
for (int i = 0; i < 0; i++){
BCryptPasswordEncoder encoder = new BCryptPasswordEncoder();
System.out.println(encoder.encode("123"));
}
}


@Bean
PasswordEncoder passwordEncoder(){
return NoOpPasswordEncoder.getInstance();
}

替换为
@Bean
PasswordEncoder passwordEncoder(){
return new BCryptPasswordEncoder();
}

方法安全:

即该方法加一个权限,明确该方法是什么角色可以调用的.

开发者也可以通过注解来灵活地配置方法安全,要 使用相关注解,首先要通过@EnableGloba!MethodSecurity 注解开启基于注解的安全配置:
 

@Configuration
//用于解锁注解。
@EnableGlobalMethodSecurity(prePostEnabled = true,securedEnabled = true)
public class MultiHttpSecurityConfig {

@Bean
PasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}

@Autowired
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.inMemoryAuthentication()
.withUser("javaboy").password("$2a$10$G3kVAJHvmRrr6sOj.j4xpO2Dsxl5EG8rHycPHFWyi9UMIhtdSH15u").roles("admin")
.and()
.withUser("江南一点雨").password("$2a$10$kWjG2GxWhm/2tN2ZBpi7bexXjUneIKFxIAaMYJzY7WcziZLCD4PZS").roles("user");
}

@Configuration
@Order(1)
public static class AdminSecurityConfig extends WebSecurityConfigurerAdapter{
@Override
protected void configure(HttpSecurity http) throws Exception {
http.antMatcher("/admin/**").authorizeRequests().anyRequest().hasAnyRole("admin");
}
}

@Configuration
public static class OtherSecurityConfig extends WebSecurityConfigurerAdapter{
@Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests().anyRequest().authenticated()
.and()
.formLogin()
.loginProcessingUrl("/doLogin")
.permitAll()
.and()
.csrf().disable();
}
}
}

 

package com.liruilong.securityl.demo.service;

import org.springframework.security.access.annotation.Secured;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.stereotype.Service;

/**
* @Description :
* @Author: Liruilong
* @Date: 2019/12/24 17:31
*/
@Service
public class userservlce {
//
@PreAuthorize("hasRole('admin')")
public String admin(){
return "hello admin";
}
@Secured("ROLB_user")
public String users(){
return "hello user";
}
@PreAuthorize("hasAnyRole('admin','user')")
public String hello(){
return "hello hello";
}
}

代码解释: •

  • @Secured(”ROLE_ AD MIN")注解表示访问该方法需要 ADMIN 角色,注意这里需要在角色前加一个前缀“ROLE ’
  • @PreAuthorize(”hasRole(’AD MIN’) and hasRole('DBA')”)注解表示访问该方法既需妥 ADMIN 角色又需要 DBA 角色。 •
  • @PreAuthorize("hasAnyRole(’ADMIN','DBA','USER’)”)表示访问该方法需要 ADMIN、 DBA 或 USER 角色。
  • •@PreAuthorize 和@PostAuthorize 中都可以使用基于表达式的语法。

基于数据库的认证

动态配置权限

  • 配置自定义权限拦截withObjectPostProcessor
  • 定义自定义拦截逻辑,获取有当前访问路径权限的所有角色,返回角色数组.
  • 通过FilterlnvocationSecurityMetadataSource 接口中的 getAttributes 方法来确定一个请求需要哪些角色
  • 自定义角色比对之后的逻辑.判断当前用户是否有访问角色.的权利,
  • 自定义 AccessDecisionManager 并重写 decide 方法,decide有三个参数,当前登录用户的信息,请求对象,上一个getAttribute返回的角色数组.
package com.liruilong.hros.model;


import com.fasterxml.jackson.annotation.JacksonInject;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreType;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

public class Hr implements UserDetails {
private Integer id;

private String name;

private String phone;

private String telephone;

private String address;

private Boolean enabled;

private String username;

private String password;

private String userface;

private String remark;

private List<Role> roles;

public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name == null ? null : name.trim();
}

public String getPhone() {
return phone;
}

public void setPhone(String phone) {
this.phone = phone == null ? null : phone.trim();
}

public String getTelephone() {
return telephone;
}

public void setTelephone(String telephone) {
this.telephone = telephone == null ? null : telephone.trim();
}

public String getAddress() {
return address;
}

public void setAddress(String address) {
this.address = address == null ? null : address.trim();
}



public void setEnabled(Boolean enabled) {
this.enabled = enabled;
}

@Override
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username == null ? null : username.trim();
}

@Override
public String getPassword() {
return password;
}

public void setPassword(String password) {
this.password = password == null ? null : password.trim();
}

public String getUserface() {
return userface;
}

public void setUserface(String userface) {
this.userface = userface == null ? null : userface.trim();
}

public String getRemark() {
return remark;
}

public void setRemark(String remark) {
this.remark = remark == null ? null : remark.trim();
}

@Override
public boolean isAccountNonExpired() {
return true;
}

@Override
public boolean isAccountNonLocked() {
return true;
}

@Override
public boolean isCredentialsNonExpired() {
return true;
}

@Override
public boolean isEnabled() {
return enabled;
}


@Override
@JsonIgnore
public Collection<? extends GrantedAuthority> getAuthorities() {
List<SimpleGrantedAuthority> authorities = new ArrayList<>(roles.size());
roles.stream().forEach( (role) ->authorities.add(new SimpleGrantedAuthority(role.getName())));
return authorities;
}

public List<Role> getRoles() {
return roles;
}

public void setRoles(List<Role> roles) {
this.roles = roles;
}
}

Spring Security 配置笔记_java_04

要实现动态配置权限,首先要自定义 FilterlnvocationSecurityMetadataSource,自定义权限拦截,获取当前请求的所有角色, Spring Security 中通过 FilterlnvocationSecurityMetadataSource 接口中的 getAttributes 方法来确定一个请求需要哪些 角色, FilterlnvocationSecurityMetadataSource 接口的默认实现类是 DefaultFilterlnvocationSecurityMetadataSource ,参考 DefaultFilterlnvocationSecurityMetadataSource 的实现,开发者可以定义自己的 FilterlnvocationSecurityMetadataSource,

SecurityMetadataSource​Spring Security​的一个概念模型接口。用于表示对受权限保护的"安全对象"的权限设置信息。一个该类对象可以被理解成一个映射表,映射表中的每一项包含如下信息 :

  • 安全对象
  • 安全对象所需权限信息

围绕该映射表,

package com.liruilong.hros.config;

import com.liruilong.hros.mapper.MenuMapper;
import com.liruilong.hros.model.Menu;
import com.liruilong.hros.model.Role;
import com.liruilong.hros.service.MenuService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.access.SecurityConfig;
import org.springframework.security.web.FilterInvocation;
import org.springframework.security.web.access.intercept.FilterInvocationSecurityMetadataSource;
import org.springframework.stereotype.Component;
import org.springframework.util.AntPathMatcher;

import java.util.Collection;
import java.util.List;

/**
* @Description : 权限处理,根据请求,分析需要的角色,该类的主要功能就是通过当前的请求地址,获取该地址需要的用户角色
* @Author: Liruilong
* @Date: 2019/12/24 12:17
*/
@Component
public class CustomFilterInvocationSecurityMetadataSource implements FilterInvocationSecurityMetadataSource {
@Autowired
MenuService menuService;
//路径比较工具
AntPathMatcher antPathMatcher = new AntPathMatcher();
/**
* @return java.util.Collection<org.springframework.security.access.ConfigAttribute>
* @Author Liruilong
* @Description 当前请求需要的角色
* @Date 18:13 2019/12/24
* @Param [object]
**/
@Override
public Collection<ConfigAttribute> getAttributes(Object object) throws IllegalArgumentException {
//获取当前请求路径
String requestUrl = ((FilterInvocation) object).getRequestUrl();
//获取所有的菜单url路径
List<Menu> menus = menuService.getAllMenusWithRole();
for (Menu menu : menus) {
if (antPathMatcher.match(menu.getUrl(), requestUrl)) {
//拥有当前菜单权限的角色
List<Role> roles = menu.getRoles();
String[] strings = new String[roles.size()];
for (int i = 0; i < roles.size(); i++) {
strings[i] = roles.get(i).getName();
}
return SecurityConfig.createList(strings);
}
}
// 没匹配上的资源都是登录
return SecurityConfig.createList("ROLE_LOGIN");
}
@Override
public Collection<ConfigAttribute> getAllConfigAttributes() {
return null;
}

@Override
public boolean supports(Class<?> clazz) {
return true;
}
}

 开发者自定义 FilterlnvocationSecurityrMetadataSource :

主要实现该接口中的 getAttributes 方法, 该方法的参数是一个 FilterInvocation, 开发者可以从 Filterlnvocation 中提取出当前请求的 URL,返回值是 Collection<ConfigAttribute>,表示当前请求 URL 所需的角色

  • 创建一个 AntPathMatcher,主要用来实现 ant 风格的 URL 匹配。
  • 从参数中提取出当前请求的 URL。
  • 从数据库中获取所有的资源信息,即本案例中的 menu 表以及 menu 所对应的 role,
  • 追历资源信息,边历过程中获取当前请求的 URL 所需要的角色信息并返回。如 果当前请求的 URL 在资源表中不存在相应的模式,就假设该请求登录后即可访问,即直接返代码解释: ROLE LOGJN。
  • getAllConfigAttributes 方法用来返回所有定义好的权限资源, Spring Security 在启动时会校验 相关配置是否正确,如果不需要校验,那么该方法直接返回 null 即可。 supports 方法返回类对象是否支持校验。 

 自定义 AccessDecisionManager

当一个请求走完 FilterlnvocationSecurityMetadataSource 中的 getAttributes 方法后,接下来就会 来到 AccessDecisionManager 类中进行角色信息的比对,自定义 AccessDecisionManager 如下:
 

package com.liruilong.hros.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.AccessDecisionManager;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.authentication.AnonymousAuthenticationToken;
import org.springframework.security.authentication.InsufficientAuthenticationException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.stereotype.Component;

import java.util.Collection;

/**
* @Description : 判断当前用户是否具备菜单访问,当一个请求走完 FilterlnvocationSecurityMetadataSource 中的 getAttributes 方法后,接下来就会 来到 AccessDecisionManager 类中进行角色信息的比对
* @Author: Liruilong
* @Date: 2019/12/24 19:12
*/
@Component
public class CustomUrlDecisionManager implements AccessDecisionManager {

/**
* @return void
* @Author Liruilong
* @Description decide 方法有三个参数, 第一个参数包含当前登录用户的信息;
* 第二个参数则是一个 Filterlnvocation 对 象 ,可以 获 取当前请求对 象等;
* 第 三个参 数就是 FilterlnvocationSecurityMetadataSource 中的 getAttributes 方法的返回值, 即当前请求 URL 所 需要的角色。
* @Date 18:28 2020/2/13
* @Param [authentication, object, configAttributes]
**/

@Override
public void decide(Authentication authentication, Object object, Collection<ConfigAttribute> configAttributes)
throws AccessDeniedException, InsufficientAuthenticationException {
for (ConfigAttribute configAttribute : configAttributes) {
String needRole = configAttribute.getAttribute();
if ("ROLE_LOGIN".equals(needRole)) {
//判断用户是否登录
if (authentication instanceof AnonymousAuthenticationToken) {
throw new AccessDeniedException("尚未登录,请登录!");
} else {
return;
}
}
Collection<? extends GrantedAuthority> authorities = authentication.getAuthorities();
for (GrantedAuthority authority : authorities) {
if (authority.getAuthority().equals(needRole)) {
return;
}
}
}
throw new AccessDeniedException("权限不足,请联系管理员!");
}

@Override
public boolean supports(ConfigAttribute attribute) {
return true;
}

@Override
public boolean supports(Class<?> clazz) {
return true;
}
}
// authorities.stream().anyMatch((authority) ->authority.getAuthority().equals(attribute));

自定义 AccessDecisionManager 并重写 decide 方法,

在该方法中判断当前登录的用户是否具 备当前请求 URL 所需要的角色信息,如果不具备,就抛出 AccessDeniedException 异常,否 则不做任何事即可。

decide 方法有三个参数,

第一个参数包含当前登录用户的信息;

第二个参数则是一个 Filterlnvocation 对 象 ,可以 获 取当前请求对 象等;

第 三个参 数就是 FilterlnvocationSecurityMetadataSource 中的 getAttributes 方法的返回值, 即当前请求 URL 所 需要的角色。

进行角色信息对比,如果需要的角色是 ROLE_LOG,说明当前请求的 URL 用 户登录后即可访问,如果 auth 是 UsemamePasswordAuthenticationToken 的实例,那么说明当前用户已登录,该方法到此结束,否则进入正常的判断流程,如果当前用户具备当前请求需 要的角色,那么方法结束。

springSecurity配置流程分析:

Spring Security 配置笔记_spring_05

Spring Security 配置笔记_ide_06

package com.liruilong.hros.config;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.liruilong.hros.filter.VerifyCodeFilter;
import com.liruilong.hros.model.Hr;
import com.liruilong.hros.model.RespBean;
import com.liruilong.hros.service.HrService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.*;
import org.springframework.security.config.annotation.ObjectPostProcessor;
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.WebSecurityConfigurerAdapter;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.security.web.access.intercept.FilterSecurityInterceptor;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutSuccessHandler;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

/**
* @Description :
* @Author: Liruilong
* @Date: 2019/12/18 19:11
*/

@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
HrService hrService;
@Autowired
CustomFilterInvocationSecurityMetadataSource customFilterInvocationSecurityMetadataSource;
@Autowired
CustomUrlDecisionManager customUrlDecisionManager;
@Autowired
VerifyCodeFilter verifyCodeFilter ;
@Autowired
MyAuthenticationFailureHandler myAuthenticationFailureHandler;

@Override
protected void configure(HttpSecurity http) throws Exception {
http.addFilterBefore(verifyCodeFilter, UsernamePasswordAuthenticationFilter.class)
.authorizeRequests()
//.anyRequest().authenticated()
//所有请求的都会经过这进行鉴权处理。返回当前请求需要的角色。
.withObjectPostProcessor(new ObjectPostProcessor<FilterSecurityInterceptor>() {
@Override
public <O extends FilterSecurityInterceptor> O postProcess(O object) {
object.setSecurityMetadataSource(customFilterInvocationSecurityMetadataSource);
object.setAccessDecisionManager(customUrlDecisionManager);
return object;
}
})
.and().formLogin().usernameParameter("username").passwordParameter("password")
//设置登录请求的url路径
.loginProcessingUrl("/doLogin")
/*需要身份验证时,将浏览器重定向到/ login
我们负责在请求/ login时呈现登录页面
当身份验证尝试失败时,将浏览器重定向到/ login?error(因为我们没有另外指定)
当请求/ login?error时,我们负责呈现失败页面
成功注销后,将浏览器重定向到/ login?logout(因为我们没有另外指定)
我们负责在请求/ login?logout时呈现注销确认页面*/
.loginPage("/login")
//登录成功回调
.successHandler(new AuthenticationSuccessHandler() {
@Override
public void onAuthenticationSuccess(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Authentication authentication) throws IOException, ServletException {
httpServletResponse.setContentType("application/json;charset=utf-8");
PrintWriter out = httpServletResponse.getWriter();
Hr hr = (Hr) authentication.getPrincipal();
//密码不回传
hr.setPassword(null);
RespBean ok = RespBean.ok("登录成功!", hr);
//将hr转化为Sting
String s = new ObjectMapper().writeValueAsString(ok);
out.write(s);
out.flush();
out.close();
}
})
//登失败回调
.failureHandler(myAuthenticationFailureHandler)
//相关的接口直接返回
.permitAll().and().logout()
//注销登录
.logoutSuccessHandler(new LogoutSuccessHandler() {
@Override
public void onLogoutSuccess(HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse,
Authentication authentication) throws IOException, ServletException {
httpServletResponse.setContentType("application/json;charset=utf-8");
PrintWriter out = httpServletResponse.getWriter();
out.write(new ObjectMapper().writeValueAsString(RespBean.ok("注销成功!")));
out.flush();
out.close();
}
})
.permitAll().and().csrf().disable().exceptionHandling()
//没有认证时,在这里处理结果,不要重定向
.authenticationEntryPoint(
//myAuthenticationEntryPoint;
new AuthenticationEntryPoint() {
@Override
public void commence(HttpServletRequest req, HttpServletResponse resp, AuthenticationException authException) throws IOException, ServletException {
resp.setContentType("application/json;charset=utf-8");
resp.setStatus(401);
PrintWriter out = resp.getWriter();
RespBean respBean = RespBean.error("访问失败!");
if (authException instanceof InsufficientAuthenticationException) {
respBean.setMsg("请求失败,请联系管理员!");
}
out.write(new ObjectMapper().writeValueAsString(respBean));
out.flush();
out.close();
}
});
}
@Bean
PasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(hrService);
}
/**
* @Author Liruilong
* @Description 放行的请求路径
* @Date 19:25 2020/2/7
* @Param [web]
* @return void
**/
@Override
public void configure(WebSecurity web) throws Exception {
web.ignoring().antMatchers("/auth/code","/login","/css/**","/js/**", "/index.html", "/img/**", "/fonts/**","/favicon.ico");
}
}

SpringSecurity执行流程分析:

Spring Security 配置笔记_ide_07

UsernamePasswordAuthenticationFilter就是拦截我们通过表单提交接口提交的用户名和密码,如果是Basic提交的话,就会被BasicAuthenticationFilter拦截,最后的橙色FilterSecurityInterceptor是首先判断我们当前请求的url是否需要认证,如果需要认证,那么就看当前请求是否已经认证,是的话就放行到我们要访问的接口,否则重定向到认证页面。
 

UsernamePasswordAuthenticationFilter首先会拦截请求,而UsernamePasswordAuthenticationFilter是继承于AbstractAuthenticationProcessingFilter的,在这个抽象类中已经定义好了doFilter的方法,而里面有一个attemptAuthentication方法是由子类实现的。所以当提交表单时spring security会发现这个一个表单提交,然后就调用了UsernamePasswordAuthenticationFilter的doFilter方法

springSecurity其实就是一组过滤器,请求和响应都会经过这些过滤器,在系统启动的时候,spring boot会自动配上

黄色:已经存储的认证信息

绿色:处理用户身份认证

橙色:捕获黄色抛出的异常

蓝色:决定当前请求是否通过之前某个过滤器的身份认证,不能通过就抛出异常,通过了会帮我们直接跳转

Spring Security 配置笔记_java_08

 

它的身份认证其实是始于访问资源开始。如果一个用户已登录,那么访问受保护的资源,则会校验该用户是否有权限访问。如果没有权限,则会调用权限拒绝的处理器进行处理。如果有权限,则能顺利访问该资源;

一个用户未登录情况下,也即匿名用户,访问受保护的资源时,spring security会首先检查该资源是否需要权限,如果需要权限,然后再检查,该资源是否是白名单里面。如果是白名单,也能正常访问。如果是受保护的资源,则会提示该用户需要登录。
 

 

感觉学的不大好.....