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一、介绍

BCrypt算法是目前使用比较多的加密、解密算法。SpringSecurity中提供了BCryptPasswordEncoder类

优点：

二、具体使用

1）在SpringSecurity的配置类中，使用@Configuration和@Bean的组合来创建BCryptPasswordEncoder Bean

@EnableWebSecuritypublic class MySecurityConfig extends WebSecurityConfigurerAdapter {    Logger logger = LoggerFactory.getLogger(getClass());    @Autowired    MyUserDetailService myUserDetailService;    //Control+O 打开重写方法    //定制请求的授权规则    @Override    protected void configure(HttpSecurity http) throws Exception {        System.out.println("进入到 MySecurityConfig的configure 方法中");        //super.configure(http);        /*Spring Security 的默认构造器：        通过调用authorizeRequests()和 anyRequest().authenticated()就会要求所有进入应用的HTTP请求都要进行认证        http            .authorizeRequests()                .anyRequest().authenticated()                .and()            .formLogin().and()            .httpBasic(); //弹出一个输入用户名、密码的登录框                         “/shop/hello” 和 “/shop/order” 这两个路径必须进过认证,并且 “/shop/order” 必须是 post 请求的方式.             对于其他的请求,我们都是 .anyRequest().permitAll() ;都放行.             http.authorizeRequests()                .antMatchers("/shop/hello").authenticated()                .antMatchers(HttpMethod.POST,"/shop/order").authenticated()                .anyRequest().permitAll();             antMatchers()方法所使用的路径可能会包括Ant风格的通配符，而regexMatchers()方法则能够接受正则表达式来定义请求路径。         */        // 基于token，所以不需要session        http.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);        // /**代表所有的请求        http.authorizeRequests()//方法表示开启了认证规则配置；定义哪些url需要保护，哪些url不需要保护；                .antMatchers("/api/**").permitAll()//定义不需要认证就可以访问//                .antMatchers("/session/**").permitAll()//定义不需要认证就可以访问//                .antMatchers("/component/**").hasAuthority("ROLE_ADMIN")                .antMatchers("/home/**").hasAnyAuthority("ROLE_DEV_APPLICATION","ROLE_ADMIN","ROLE_DEV_TERMINAL_IOS")                .anyRequest().authenticated();其他的路径都是登录后即可访问//                .and().formLogin().loginPage("/")////                //在successHandler中，使用response返回登录成功的json即可，切记不可以使用defaultSuccessUrl，defaultSuccessUrl是只登录成功后重定向的页面，failureHandler也是由于相同的原因不使用failureUrl。//                .loginProcessingUrl("/login").successHandler(//                        new AuthenticationSuccessHandler(){//                            @Override//                            public void onAuthenticationSuccess(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Authentication authentication) throws IOException, ServletException {//                                System.out.println(authentication.getDetails());//                                httpServletResponse.setContentType("application/json;charset=utf-8");//                                PrintWriter out = httpServletResponse.getWriter();//                                out.write("{\"status\":\"success\",\"msg\":\"登录成功\"}");//                                out.flush();//                                out.close();//                            }//                }).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();//                                out.write("{\"status\":\"failed\",\"msg\":\"登录失败\"}");//                                out.flush();//                                out.close();//                            }//                });                //http.logout()开启自动配置的注销功能                //1) 访问/logout 表示用户注销，清空session                //2) 注销成功会返回/login?logout 页面                //3) logoutSuccessfulUrl 改变2)的设置                http.logout().logoutSuccessUrl("/login");                http.sessionManagement().invalidSessionUrl("/login");                http.rememberMe().rememberMeParameter("remember");//                .usernameParameter("username").passwordParameter("password").defaultSuccessUrl("/");定义当需要用户登录时候，转到的登录页面//                http.headers().frameOptions().disable();//                .antMatchers("/level2/**").hasRole("VIP2")//                .antMatchers("/level3/**").hasRole("VIP3");        //开启自动配置的登录功能。如果没有登录，没有权限就会来到登录页面        //1:/login来到登录页        //2:重定向/login?error表示登录失败        //3:更多详细规定        //http.formLogin().defaultSuccessUrl("/user/login.html");        /* iframe */	    http.headers().frameOptions().sameOrigin(); // 运行同一个域名中的任何请求        http.csrf().disable(); // 默认是启用的，需要禁用CSRF保护（当不使用cookie时可以禁用csrf）        http.addFilterBefore(authenticationTokenFilterBean(), UsernamePasswordAuthenticationFilter.class);        // 禁用缓存        http.headers().cacheControl();    }    //定制请求的认证规则    @Autowired    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {        System.out.println("进入到 configureGlobal 方法中");        System.out.println("auth.userDetailsService(myUserDetailService)：" + auth.userDetailsService(myUserDetailService));    //1)获取内存中的用户名和密码//        auth.inMemoryAuthentication().passwordEncoder(new BCryptPasswordEncoder())                .withUser("1").password(new BCryptPasswordEncoder().encode("1")).roles("USER");//                .withUser("1").password(new BCryptPasswordEncoder().encode("1")).authorities("ROLE_TEST");//        auth.authenticationProvider(authenticationProvider());//        auth.userDetailsService(myUserDetailService).passwordEncoder(passwordEncoder());    //2)获取数据库中的用户名和密码        auth.userDetailsService(myUserDetailService).passwordEncoder(new PasswordEncoder() {            @Override            public String encode(CharSequence charSequence) {                return charSequence.toString();            }            @Override            public boolean matches(CharSequence charSequence, String s) {                return s.equals(charSequence.toString());            }        });    }    /*     通过AuthenticationProvider方式获取     */    @Bean    public DaoAuthenticationProvider authenticationProvider() {        System.out.println("进入到 authenticationProvider 方法中");        DaoAuthenticationProvider authProvider = new DaoAuthenticationProvider();        authProvider.setUserDetailsService(myUserDetailService);        authProvider.setPasswordEncoder(passwordEncoder());        return authProvider;    }    /**     * 密码生成策略     * @return     */    @Bean    public BCryptPasswordEncoder passwordEncoder() {        System.out.println("进入到 passwordEncoder 方法中");        return new BCryptPasswordEncoder();    }    @Bean    public JwtAuthenticationTokenFilter authenticationTokenFilterBean() throws Exception {        System.out.println("进入到 authenticationTokenFilterBean 方法中");        return new JwtAuthenticationTokenFilter();    }}

2）添加新成员信息时使用encode()进行密码加密

@RestController@RequestMapping(value = "api/umeapiplus/user")public class UserController {    private static final Gson gson = new Gson();    @Autowired    public UserService userService;    @Autowired    public BCryptPasswordEncoder bCryptPasswordEncoder;    @Autowired    public RoleAndUserService roleAndUserService;    @Autowired    public RoleService roleService;    @Autowired    CorporationAndUserService corporationAndUserService;    @RequestMapping(value = "/updateMemberInfos", method = RequestMethod.POST)    public boolean updateMemberInfos(@RequestBody JSONObject jsonObject){        User userOfWeb =  gson.fromJson(JSONObject.toJSONString(jsonObject.getJSONObject("user")), User.class);        String permission = jsonObject.getString("permission");        String encodedPassword = bCryptPasswordEncoder.encode(userOfWeb.getPassword());        userOfWeb.setPassword(encodedPassword);        userOfWeb.setLastLoginDate(new Date());//??        boolean userResult = userService.update(userOfWeb);       // 更新权限信息        RoleAndUser roleAndUser = roleAndUserService.findByUserId(userOfWeb.getId());        Integer roleId = roleService.findByRoleName(permission);        roleAndUser.setRoleId(roleId);        boolean roleAndUserResult = roleAndUserService.update(roleAndUser);        return userResult && roleAndUserResult;    }    @RequestMapping(value = "/addNewMember", method = RequestMethod.POST)    public boolean addNewMember(@RequestBody JSONObject jsonObject){        User userOfWeb =  gson.fromJson(JSONObject.toJSONString(jsonObject.getJSONObject("user")), User.class);        String permission = jsonObject.getString("permission");        Integer corporationId = jsonObject.getInteger("corporationId");        String encodedPassword = bCryptPasswordEncoder.encode(userOfWeb.getPassword());        userOfWeb.setPassword(encodedPassword);        userOfWeb.setCreateDate(new Date());        userOfWeb.setLastLoginDate(new Date());        boolean userResult = userService.insertOfReturnId(userOfWeb);        //插入tb_role_and_user_new一条新记录        RoleAndUser roleAndUser = new RoleAndUser();        roleAndUser.setUserId(userOfWeb.getId());        Integer roleId = roleService.findByRoleName(permission);        roleAndUser.setRoleId(roleId);        boolean roleAndUserResult = roleAndUserService.insert(roleAndUser);        //插入tb_corporation_and_user一条新记录        CorporationAndUser corporationAndUser = new CorporationAndUser();        corporationAndUser.setUserId(userOfWeb.getId());        corporationAndUser.setCorporationId(corporationId);        corporationAndUser.setRoleId(roleId);        boolean corporationAndUserResult = corporationAndUserService.insert(corporationAndUser);        return userResult && roleAndUserResult && corporationAndUserResult;    }    @RequestMapping(value = "/deleteMember", method = RequestMethod.GET)    public boolean deleteMember(@RequestParam(value = "userId") Integer userId, @RequestParam(value = "corporationId") Integer corporationId){        boolean userResult = userService.deleteByPrimaryKey(userId);        boolean roleAndUserResult = roleAndUserService.deleteByUserId(userId);        boolean corporationAndUserResult = corporationAndUserService.deleteByUserId(userId);        return userResult && roleAndUserResult && corporationAndUserResult;    }}

3）解密

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