springsecurity登录和权限管理

spring security

spring security 主要的两个功能是认证和授权
认证的大概流程&＃xff1a;
Username password AuthenticationFilter&＃xff08;自定义usernamepassword拦截器&＃xff09;
UserDetailService &＃xff08;查询用户密码的service接口&＃xff09;
Userdetails (用户类接口)
AuthenticationProvide &＃xff08;为认证管理器AuthenticationManager 提供验证组件AuthenticationProvider&＃xff09;
授权的大概流程&＃xff1a;
&＃xff08;extends&＃xff09;AbstractsecurityInterceptor &＃43;&＃xff08;implements&＃xff09;Filter&＃xff08;资源访问过滤器&＃xff0c;拦截访问请求&＃xff0c;封装成安全对象FilterInvocation&＃xff0c;调用前两个实例进行鉴权&＃xff09;
FilterInvocationSecurityMetadataSource&＃xff08;自定义权限数据源&＃xff0c;提供所有URL资源与对应角色权限的映射集合&＃xff09;
AccessDecisionManager &＃xff08;自定义鉴权管理器&＃xff0c;根据URL资源权限和用户角色权限进行鉴权&＃xff09;

用户登陆
会被AuthenticationProcessingFilter拦截&＃xff0c;调用AuthenticationManager的实现&＃xff0c;而且AuthenticationManager会调用ProviderManager来获取用户验证信息&＃xff08;不同的Provider调用的服务不同&＃xff0c;因为这些信息可以是在数据库上&＃xff0c;可以是在LDAP服务器上&＃xff0c;可以是xml配置文件上等&＃xff09;&＃xff0c;如果验证通过后会将用户的权限信息封装一个User放到spring的全局缓存SecurityContextHolder中&＃xff0c;以备后面访问资源时使用。
访问资源&＃xff08;即授权管理&＃xff09;
访问url时&＃xff0c;会通过AbstractSecurityInterceptor拦截器拦截&＃xff0c;其中会调用FilterInvocationSecurityMetadataSource的方法来获取被拦截url所需的全部权限&＃xff0c;在调用授权管理器AccessDecisionManager&＃xff0c;这个授权管理器会通过spring的全局缓存SecurityContextHolder获取用户的权限信息&＃xff0c;还会获取被拦截的url和被拦截url所需的全部权限&＃xff0c;然后根据所配的策略&＃xff08;有&＃xff1a;一票决定&＃xff0c;一票否定&＃xff0c;少数服从多数等&＃xff09;&＃xff0c;如果权限足够&＃xff0c;则返回&＃xff0c;权限不够则报错并调用权限不足页面。

项目结构&＃xff1a;

数据库设计&＃xff1a;

model:
Permission

package com.example.arcgisdemo.model;import com.sun.javafx.beans.IDProperty;import javax.persistence.*;
import java.util.List;&＃64;Entity
&＃64;Table(name &＃61; "SYS_PERMISSION")
public class Permission {&＃64;Id&＃64;GeneratedValue(strategy &＃61; GenerationType.AUTO)&＃64;Column(name &＃61; "ID")private int id;&＃64;Column(name &＃61; "NAME")private String name;&＃64;Column(name &＃61; "DESCRIPTION")private String description;&＃64;Column(name &＃61; "URL")private String url;&＃64;Column(name &＃61; "PID")private String pid;public int getId() {return id;}public void setId(int id) {this.id &＃61; id;}public String getName() {return name;}public void setName(String name) {this.name &＃61; name;}public String getDescription() {return description;}public void setDescription(String description) {this.description &＃61; description;}public String getUrl() {return url;}public void setUrl(String url) {this.url &＃61; url;}public String getPid() {return pid;}public void setPid(String pid) {this.pid &＃61; pid;}}

User:
这里是在User中实现了UserDetails

package com.example.arcgisdemo.model;import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;import javax.persistence.*;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;&＃64;Entity
&＃64;Table(name &＃61; "SYS_USER")
public class User implements UserDetails {&＃64;Id&＃64;GeneratedValue(strategy &＃61; GenerationType.AUTO)&＃64;Column(name &＃61; "ID")private int id;&＃64;Column(name &＃61; "USERNAME")private String username;&＃64;Column(name &＃61; "PASSWORD")private String password;&＃64;ManyToMany(fetch &＃61; FetchType.EAGER)&＃64;JoinTable(name &＃61; "SYS_ROLE_USER",joinColumns &＃61; {&＃64;JoinColumn(name &＃61; "SYS_USER_ID",referencedColumnName &＃61; "ID")},inverseJoinColumns &＃61; {&＃64;JoinColumn(name &＃61; "SYS_ROLE_ID",referencedColumnName &＃61; "ID")})private List roles;&＃64;Overridepublic Collection getAuthorities() {if (roles &＃61;&＃61; null || roles.size() <1) {return AuthorityUtils.commaSeparatedStringToAuthorityList("");}StringBuilder rolestring &＃61; new StringBuilder();for (Role role : roles) {rolestring.append(role.getName()).append(",");}List authorityList &＃61; AuthorityUtils.commaSeparatedStringToAuthorityList(rolestring.substring(0, rolestring.length() - 1));return authorityList;}public int getId() {return id;}public void setId(int id) {this.id &＃61; id;}public String getUsername() {return username;}public void setUsername(String username) {this.username &＃61; username;}public String getPassword() {return password;}public void setPassword(String password) {this.password &＃61; password;}&＃64;Overridepublic boolean isAccountNonExpired() {return true;}&＃64;Overridepublic boolean isAccountNonLocked() {return true;}&＃64;Overridepublic boolean isCredentialsNonExpired() {return true;}&＃64;Overridepublic boolean isEnabled() {return true;}public List getRoles() {return roles;}public void setRoles(List roles) {this.roles &＃61; roles;}}

Role

package com.example.arcgisdemo.model;import javax.persistence.*;
import java.util.List;&＃64;Entity
&＃64;Table(name &＃61; "SYS_ROLE")
public class Role {&＃64;Id&＃64;GeneratedValue(strategy &＃61; GenerationType.AUTO)&＃64;Column(name &＃61; "ID")private int id;&＃64;Column(name &＃61; "NAME")private String name;&＃64;ManyToMany(fetch &＃61; FetchType.EAGER)&＃64;JoinTable(name &＃61; "SYS_PERMISSION_ROLE",joinColumns &＃61; {&＃64;JoinColumn(name &＃61; "ROLE_ID",referencedColumnName &＃61; "ID")},inverseJoinColumns &＃61; {&＃64;JoinColumn(name &＃61; "PERMISSION_ID",referencedColumnName &＃61; "ID")})private List permissions;public int getId() {return id;}public void setId(int id) {this.id &＃61; id;}public String getName() {return name;}public void setName(String name) {this.name &＃61; name;}public List getPermissions() {return permissions;}public void setPermissions(List permissions) {this.permissions &＃61; permissions;}
}

security:
WebSecurityConfig 配置

package com.example.arcgisdemo.security;import com.example.arcgisdemo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
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.method.configuration.EnableGlobalMethodSecurity;
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;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.password.NoOpPasswordEncoder;
import org.springframework.security.web.access.intercept.FilterSecurityInterceptor;
import org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler;
import org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;&＃64;Configuration
&＃64;EnableWebSecurity //注解开启Spring Security的功能
&＃64;EnableGlobalMethodSecurity(prePostEnabled &＃61; true) //开启Spring Security注解功能
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {&＃64;Autowiredprivate UserService userService;&＃64;Autowiredprivate SysFilterSecurityInterceptor sysFilterSecurityInterceptor;protected void configure(AuthenticationManagerBuilder auth) throws Exception {auth.userDetailsService(userService).passwordEncoder(passwordEncoder());
// auth.authenticationProvider(new SysDaoAuthenticationProvider());}protected void configure(HttpSecurity http) throws Exception {http.authorizeRequests().antMatchers("/js/layui/**").permitAll() //定义不需要认证就可以访问的资源.anyRequest().authenticated().and().formLogin().loginPage("/login") //定义当需要用户登录时候&＃xff0c;转到的登录页面.loginProcessingUrl("/login").defaultSuccessUrl("/", true).failureUrl("/login?error").permitAll().and().logout().logoutUrl("/logout")//退出登录后的默认Url是login.logoutSuccessUrl("/login").permitAll();//解决非thymeleaf的form表单提交被拦截问题http.csrf().disable();http.addFilter(customUsernamePasswordAuthenticationFilter());http.addFilterBefore(sysFilterSecurityInterceptor, FilterSecurityInterceptor.class).csrf().disable();http.headers().frameOptions().sameOrigin();}
/*,"https://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Hydrography/Watershed173811/MapServer/1","https://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Hydrography/Watershed173811/MapServer/0","http://192.168.101.4:8080/agapi/**"*/&＃64;Beanpublic static NoOpPasswordEncoder passwordEncoder() {return (NoOpPasswordEncoder) NoOpPasswordEncoder.getInstance();}&＃64;Beanpublic UserDetailsService systemUserService() {return new UserService();}&＃64;Beanpublic SysUsernamePasswordF customUsernamePasswordAuthenticationFilter() throws Exception {SysUsernamePasswordF customUsernamePasswordAuthenticationFilter &＃61; new SysUsernamePasswordF();customUsernamePasswordAuthenticationFilter.setRequiresAuthenticationRequestMatcher(new AntPathRequestMatcher("/login", "POST"));customUsernamePasswordAuthenticationFilter.setAuthenticationManager(authenticationManagerBean());customUsernamePasswordAuthenticationFilter.setAuthenticationSuccessHandler(new SavedRequestAwareAuthenticationSuccessHandler());customUsernamePasswordAuthenticationFilter.setAuthenticationFailureHandler(new SimpleUrlAuthenticationFailureHandler("/login?error"));return customUsernamePasswordAuthenticationFilter;}
}

SysUsernamePasswordF

package com.example.arcgisdemo.security;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.security.authentication.AuthenticationServiceException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;public class SysUsernamePasswordF extends UsernamePasswordAuthenticationFilter {public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException {if (!request.getMethod().equals("POST")) {throw new AuthenticationServiceException("Authentication method not supported: " &＃43; request.getMethod());} else {String username &＃61; this.obtainUsername(request);String password &＃61; this.obtainPassword(request);if (username &＃61;&＃61; null) {username &＃61; "";}else {}if (password &＃61;&＃61; null) {password &＃61; "";}else {}username &＃61; username.trim();UsernamePasswordAuthenticationToken authRequest &＃61; new UsernamePasswordAuthenticationToken(username, password);this.setDetails(request, authRequest);return this.getAuthenticationManager().authenticate(authRequest);}}
}


SysUserDetailsService

package com.example.arcgisdemo.security;import ch.qos.logback.core.joran.conditional.ElseAction;
import com.example.arcgisdemo.model.Permission;import com.example.arcgisdemo.model.User;
import com.example.arcgisdemo.service.PermissionService;
import com.example.arcgisdemo.service.SysUserService;
import com.example.arcgisdemo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;import java.util.ArrayList;
import java.util.List;public class SysUserDetailsService implements UserDetailsService {&＃64;Autowiredprivate SysUserService sysUserService;&＃64;Autowiredprivate PermissionService permissionService;&＃64;Overridepublic UserDetails loadUserByUsername(String username) {User user &＃61; sysUserService.findByUserName(username);if (user !&＃61; null) {List permissions &＃61; permissionService.findById(user.getId());List grantedAuthorities &＃61; new ArrayList<>();for (Permission permission : permissions) {if (permission !&＃61; null && permission.getName() !&＃61; null) {GrantedAuthority grantedAuthority &＃61; new SimpleGrantedAuthority(permission.getName());//将此处权限信息添加到GrantedAuthority对象中&＃xff0c;在后面进行全权限验证时会使用GrantedAuthoritygrantedAuthorities.add(grantedAuthority);}}return new org.springframework.security.core.userdetails.User(user.getUsername(), user.getPassword(), grantedAuthorities);}else {throw new UsernameNotFoundException("do not exist");}}
}

SysInvocationSecurityMetadataSourceService

package com.example.arcgisdemo.security;import com.example.arcgisdemo.model.Permission;
import com.example.arcgisdemo.service.PermissionService;
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.security.web.util.matcher.AntPathRequestMatcher;
import org.springframework.stereotype.Service;
import sun.security.krb5.Config;import javax.servlet.http.HttpServletRequest;
import java.util.*;&＃64;Service
public class SysInvocationSecurityMetadataSourceService implements FilterInvocationSecurityMetadataSource {&＃64;Autowiredprivate PermissionService permissionService;private HashMap> map&＃61;null;//加载权限表中所有权限public void loadResourceDefine(){map&＃61;new HashMap<>();Collection array;ConfigAttribute cfg;List permissions&＃61;permissionService.findAll();for (Permission permission:permissions){array&＃61;new ArrayList<>();cfg&＃61;new SecurityConfig(permission.getName());//此处指添加用户的名字&＃xff0c;其实可以添加更多权限信息。例如请求方法到ConfigAttributr的集合中array.add(cfg);//用权限的getUrl。作为map的key。用ConfigAttribute的集合作为valuemap.put(permission.getUrl(),array);}}
//此方法是为了判定用户请求的url是否在权限表中&＃xff0c;如果在权限表中&＃xff0c;则返回给decide&＃xff08;&＃xff09;方法&＃xff0c;
// 用来判断用户是否有此权限&＃xff0c;如果不在权限表中则放行&＃64;Overridepublic Collection getAttributes(Object object) throws IllegalArgumentException {if(map &＃61;&＃61;null)loadResourceDefine();//object中包含用户请求的request信息HttpServletRequest request&＃61;((FilterInvocation)object).getHttpRequest();AntPathRequestMatcher matcher;String resUrl;for (Iterator iter&＃61;map.keySet().iterator();iter.hasNext();){resUrl&＃61;iter.next();matcher&＃61;new AntPathRequestMatcher(resUrl);if (matcher.matches(request)){return map.get(resUrl);}}return null;}&＃64;Overridepublic Collection getAllConfigAttributes() {return null;}&＃64;Overridepublic boolean supports(Class aClass) {return true;}
}

SysFilterSecurityInterceptor

package com.example.arcgisdemo.security;import org.apache.catalina.connector.Request;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.security.access.SecurityMetadataSource;
import org.springframework.security.access.intercept.AbstractSecurityInterceptor;
import org.springframework.security.access.intercept.InterceptorStatusToken;
import org.springframework.security.web.FilterInvocation;
import org.springframework.stereotype.Service;
import javax.servlet.*;import javax.servlet.*;
import java.io.IOException;
&＃64;Service(value &＃61; "sysFilterSecurityInterceptor")
public class SysFilterSecurityInterceptor extends AbstractSecurityInterceptor implements Filter {&＃64;Autowired&＃64;Qualifier(value &＃61; "sysInvocationSecurityMetadataSourceService")private SysInvocationSecurityMetadataSourceService sysInvocationSecurityMetadataSourceService;&＃64;Autowired&＃64;Qualifier(value &＃61; "sysAccessDecisionManager")public void setSysAccessDecisionManager(SysAccessDecisionManager sysAccessDecisionManager){super.setAccessDecisionManager(sysAccessDecisionManager);}&＃64;Overridepublic void init(FilterConfig filterConfig) throws ServletException {}&＃64;Overridepublic void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {FilterInvocation fi&＃61;new FilterInvocation(servletRequest,servletResponse,filterChain);invoke(fi);}public void invoke(FilterInvocation fi)throws IOException,ServletException{//fi里面有一个被拦截的url//里面调用SysInvocationSecurityMetadataSource的getAttributes(Object object)这个方法获取fi对应的所有权限//在调用SysAccessDecisionManager的decide方法来校验用户的权限是否足够InterceptorStatusToken token&＃61;super.beforeInvocation(fi);try {//执行下一个拦截器fi.getChain().doFilter(fi.getRequest(),fi.getResponse());}finally {super.afterInvocation(token,null);}}&＃64;Overridepublic void destroy() {}&＃64;Overridepublic Class getSecureObjectClass() {return FilterInvocation.class;}&＃64;Overridepublic SecurityMetadataSource obtainSecurityMetadataSource() {return this.sysInvocationSecurityMetadataSourceService;}
}


SysAccessDecisionManager

package com.example.arcgisdemo.security;import org.springframework.security.access.AccessDecisionManager;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.authentication.InsufficientAuthenticationException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.stereotype.Service;import java.util.Collection;
import java.util.Iterator;
&＃64;Service(value &＃61; "sysAccessDecisionManager")
public class SysAccessDecisionManager implements AccessDecisionManager {//decide方法是判定是否拥有权限的决策方法//authentication 是释SysUserDetailsService中循环添加到GrantedAuthority对象中的权限信息集合//object 包含客户端发起的请求的request信息。可转换为HttpServlerRequest request&＃61;((FilterInvocation) object).getHttpRequest();//configAttributes 为InvocationSecurityMetadataSource的getAttributes&＃xff08;Object&＃xff09;这个方法返回的结果//此方法是为了判定用户请求的url&＃xff0c;是否在权限表中&＃xff0c;如果在权限表中&＃xff0c;则返回给decide方法&＃xff0c;//用来判定用户是否有此权限&＃xff0c;如果不在权限表中则放行。&＃64;Overridepublic void decide(Authentication authentication, Object object, Collection configAttributes) throws AccessDeniedException, InsufficientAuthenticationException {if (null&＃61;&＃61;configAttributes || configAttributes.size()<&＃61;0){return;}ConfigAttribute configAttribute;String needRole;for (Iterator iter&＃61;configAttributes.iterator();iter.hasNext();){configAttribute&＃61;iter.next();needRole&＃61;configAttribute.getAttribute();for (GrantedAuthority ga:authentication.getAuthorities()){if (needRole.trim().equals(ga.getAuthority())){return;}}}throw new AccessDeniedException("no right");}&＃64;Overridepublic boolean supports(ConfigAttribute configAttribute) {return true;}&＃64;Overridepublic boolean supports(Class aClass) {return true;}
}

Service:
PermissionService

package com.example.arcgisdemo.service;import com.example.arcgisdemo.dao.PermissionDao;
import com.example.arcgisdemo.model.Permission;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;import java.util.List;&＃64;Service(value &＃61; "permissionService")
public class PermissionService {&＃64;Autowired&＃64;Qualifier(value &＃61; "permissionDao")private PermissionDao permissionDao;public List findAll(){return permissionDao.findAll();}public List findById(int id){return permissionDao.findById(id);}
}

SysUserService

package com.example.arcgisdemo.service;import com.example.arcgisdemo.dao.UserMapper;
import com.example.arcgisdemo.model.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;import java.util.List;&＃64;Service(value &＃61; "sysUserService")
public class SysUserService {&＃64;Autowired&＃64;Qualifier(value &＃61; "userMapper")private UserMapper userMapper;public User queryByUserName(String username) {return userMapper.queryByUsername(username);}public User findByUserName(String username){return userMapper.findByUsername(username);}
}

UserService

package com.example.arcgisdemo.service;import com.example.arcgisdemo.model.User;
import org.springframework.beans.factory.annotation.Autowired;
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;
&＃64;Service(value &＃61; "userService")
public class UserService implements UserDetailsService {&＃64;Autowiredprivate SysUserService systemUserService;&＃64;Overridepublic UserDetails loadUserByUsername(String s) throws UsernameNotFoundException {//根据用户名从数据库查询对应记录User user&＃61;systemUserService.queryByUserName(s);if (user &＃61;&＃61;null){throw new UsernameNotFoundException("username is not exists");}System.out.println("username&＃xff1a;"&＃43;user.getUsername()&＃43;",password:"&＃43;user.getPassword());return user;}
}

dao:
PermissionDao

package com.example.arcgisdemo.dao;import com.example.arcgisdemo.model.Permission;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;import java.util.List;&＃64;Repository(value &＃61; "permissionDao")
public interface PermissionDao extends JpaRepository {List findAll();List findById(int id);
}

UserMapper

package com.example.arcgisdemo.dao;import com.example.arcgisdemo.model.User;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;import java.util.List;&＃64;Repository(value &＃61; "userMapper")
public interface UserMapper extends JpaRepository {User queryByUsername(String username);User findByUsername(String username);
}

controller

package com.example.arcgisdemo.controller;import org.springframework.security.access.annotation.Secured;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;&＃64;Controller
public class DemoController {&＃64;RequestMapping("/login")public String login() {return "login";}&＃64;RequestMapping("/")public String index1() {return "index-ui";}/*&＃64;Secured({"ROLE_ADMIN"})*/&＃64;RequestMapping("/user")public String user(){return "user";}&＃64;RequestMapping("/map")public String map(){return "map";}
}

也可以在页面上设置权限&＃xff0c;让没有权限的用户看不到该功能

在这里遇到个问题 刚开始的时候没有效果&＃xff0c;经过找资料需要将spring 版本降到2.0.7以下
再加上&＃xff1a;

pom.xml 需要配置secutiry扩展包

org.thymeleaf.extrasthymeleaf-extras-springsecurity43.0.2.RELEASE


参考文档&＃xff1a;链接&＃xff1a;https://www.jianshu.com/p/bcbbf16610fb