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xing0029:
这样配置的话 事物不成功啊 还有什么地方需要注意的么 可以加我 ...
JTA集成JOTM或Atomikos配置分布式事务(Tomcat应用服务器) -
mengqingyu:
<div class="quote_title ...
JTA集成JOTM或Atomikos配置分布式事务(Tomcat应用服务器) -
liuxiaolu:
jotm的我的没有成功,楼主能否帮助一下
JTA集成JOTM或Atomikos配置分布式事务(Tomcat应用服务器) -
aptech406328627:
求解救,没弄好QQ:1053942353
Spring邮件发送(可带附件,模板,群发,异步发送等功能) -
ghpaas:
web可视化自定义表单推荐使用GForms开发平台(http: ...
在线表单设计器设计原理
利用断点走了一遍spring-security源码的核心部分,下面根据自己的理解对源码做了一些解释,过滤器开头的标号是运行时默认配置调用的顺序,理解了原理,我们可以通过继承和实现接口的方式扩展过滤器,权限验证器,数据查询器,投票器等等......
1.SecurityContextPersistenceFilter 从HttpSession中获取SecurityContext上下文
2.logoutFilter 如果访问地址为/j_spring_security_logout,LogoutFilter将注销用户
3.AbstractAuthenticationProcessingFilter 权限管理器如果访问地址为/j_spring_security_check则选择对应的数据查询器来获取存储的用户相关信息
4.BasicAuthenticationFilter
5.RequestCacheAwareFilter
6.SecurityContextHolderAwareRequestFilter
7.RememberMeAuthenticationFilter 如果当前SecurityContextHolder中没有用户对象,则通过cookie查找
8.AnonymousAuthenticationFilter 如果当前SecurityContextHolder中没有用户对象,则创建匿名对象
9.SessionManagementFilter 检查session是否超时
10.ExceptionTranslationFilter 调用FilterSecurityInterceptor,AbstractSecurityInterceptor使用投票器进行权限判断
11.SwitchUserFilter 用户切换高权限用户向低权限用户切换
1.SecurityContextPersistenceFilter 从HttpSession中获取SecurityContext上下文
2.logoutFilter 如果访问地址为/j_spring_security_logout,LogoutFilter将注销用户
3.AbstractAuthenticationProcessingFilter 权限管理器如果访问地址为/j_spring_security_check则选择对应的数据查询器来获取存储的用户相关信息
4.BasicAuthenticationFilter
5.RequestCacheAwareFilter
6.SecurityContextHolderAwareRequestFilter
7.RememberMeAuthenticationFilter 如果当前SecurityContextHolder中没有用户对象,则通过cookie查找
8.AnonymousAuthenticationFilter 如果当前SecurityContextHolder中没有用户对象,则创建匿名对象
9.SessionManagementFilter 检查session是否超时
10.ExceptionTranslationFilter 调用FilterSecurityInterceptor,AbstractSecurityInterceptor使用投票器进行权限判断
11.SwitchUserFilter 用户切换高权限用户向低权限用户切换
//从HttpSession中获取SecurityContext上下文 public class SecurityContextPersistenceFilter extends GenericFilterBean { private SecurityContextRepository repo = new HttpSessionSecurityContextRepository(); public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { //代码略..................... HttpRequestResponseHolder holder = new HttpRequestResponseHolder(request, response); SecurityContext contextBeforeChainExecution = repo.loadContext(holder);//获得security上下文 try { SecurityContextHolder.setContext(contextBeforeChainExecution); chain.doFilter(holder.getRequest(), holder.getResponse());//调用下一个过滤器 } finally { SecurityContext contextAfterChainExecution = SecurityContextHolder.getContext(); // Crucial removal of SecurityContextHolder contents - do this before anything else. SecurityContextHolder.clearContext(); repo.saveContext(contextAfterChainExecution, holder.getRequest(), holder.getResponse()); request.removeAttribute(FILTER_APPLIED); } } //代码略..................... } //如果访问地址为/j_spring_security_logout,LogoutFilter将注销用户 public class LogoutFilter extends GenericFilterBean { private String filterProcessesUrl = "/j_spring_security_logout"; //代码略..................... public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { //判断如果访问地址为/j_spring_security_logout则执行注销,否则跳过 if (requiresLogout(request, response)) { Authentication auth = SecurityContextHolder.getContext().getAuthentication(); for (LogoutHandler handler : handlers) { handler.logout(request, response, auth); } logoutSuccessHandler.onLogoutSuccess(request, response, auth); return; } chain.doFilter(request, response); } //代码略..................... } //权限管理器如果访问地址为/j_spring_security_check则选择对应的数据查询器来获取存储的用户相关信息 public abstract class AbstractAuthenticationProcessingFilter extends GenericFilterBean implements ApplicationEventPublisherAware, MessageSourceAware { //代码略..................... public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { //判断如果访问地址为/j_spring_security_check则跳过进行权限获取和判断,否则执行AnonymousAuthenticationFilter if (!requiresAuthentication(request, response)) { chain.doFilter(request, response); //调用下一个过滤器BasicAuthenticationFilter return; } Authentication authResult; try { //执行UsernamePasswordAuthenticationFilter类中的方法 authResult = attemptAuthentication(request, response); if (authResult == null) { // return immediately as subclass has indicated that it hasn't completed authentication return; } sessionStrategy.onAuthentication(authResult, request, response); } catch (AuthenticationException failed) { // Authentication failed unsuccessfulAuthentication(request, response, failed); return; } // Authentication success if (continueChainBeforeSuccessfulAuthentication) { chain.doFilter(request, response); } successfulAuthentication(request, response, authResult); } protected void successfulAuthentication(HttpServletRequest request, HttpServletResponse response, Authentication authResult) throws IOException, ServletException { SecurityContextHolder.getContext().setAuthentication(authResult); rememberMeServices.loginSuccess(request, response, authResult); //是否存入cookie // Fire event if (this.eventPublisher != null) { eventPublisher.publishEvent(new InteractiveAuthenticationSuccessEvent(authResult, this.getClass())); } successHandler.onAuthenticationSuccess(request, response, authResult);//跳转到目标页面 } //代码略..................... } public class UsernamePasswordAuthenticationFilter extends AbstractAuthenticationProcessingFilter { //代码略..................... public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException { if (postOnly && !request.getMethod().equals("POST")) { throw new AuthenticationServiceException("Authentication method not supported: " + request.getMethod()); } //获取页面提交的用户名、密码 String username = obtainUsername(request); String password = obtainPassword(request); username = username.trim(); //封装成token对象 UsernamePasswordAuthenticationToken authRequest = new UsernamePasswordAuthenticationToken(username, password); //代码略..................... //调用AbstractAuthenticationManager类中的方法 return this.getAuthenticationManager().authenticate(authRequest); } //代码略..................... } public abstract class AbstractAuthenticationManager implements AuthenticationManager { //代码略..................... public final Authentication authenticate(Authentication authRequest) throws AuthenticationException { try { return doAuthentication(authRequest);//调用ProviderManager类中的方法 } catch (AuthenticationException e) { e.setAuthentication(authRequest); if (clearExtraInformation) { e.clearExtraInformation(); } throw e; } } //代码略..................... } //权限认证管理器 public class ProviderManager extends AbstractAuthenticationManager implements MessageSourceAware, InitializingBean { private List providers = Collections.emptyList(); private AuthenticationManager parent; //代码略..................... public Authentication doAuthentication(Authentication authentication) throws AuthenticationException { Class extends Authentication> toTest = authentication.getClass(); AuthenticationException lastException = null; Authentication result = null; for (AuthenticationProvider provider : getProviders()) { if (!provider.supports(toTest)) { continue; } try { //调用AbstractUserDetailsAuthenticationProvider类中的方法 result = provider.authenticate(authentication); if (result != null) { copyDetails(authentication, result); break; } } catch (AccountStatusException e) { // SEC-546: Avoid polling additional providers if auth failure is due to invalid account status eventPublisher.publishAuthenticationFailure(e, authentication); throw e; } catch (AuthenticationException e) { lastException = e; } } if (result == null && parent != null) { // Allow the parent to try. try { result = parent.authenticate(authentication); } catch (ProviderNotFoundException e) { // ignore as we will throw below if no other exception occurred prior to calling parent and the parent // may throw ProviderNotFound even though a provider in the child already handled the request } catch (AuthenticationException e) { lastException = e; } } if (result != null) { if (eraseCredentialsAfterAuthentication && (result instanceof CredentialsContainer)) { // Authentication is complete. Remove credentials and other secret data from authentication ((CredentialsContainer)result).eraseCredentials(); } eventPublisher.publishAuthenticationSuccess(result); return result; } eventPublisher.publishAuthenticationFailure(lastException, authentication); throw lastException; } //代码略..................... } //权限查询器 public abstract class AbstractUserDetailsAuthenticationProvider implements AuthenticationProvider, InitializingBean, MessageSourceAware { //代码略..................... public Authentication authenticate(Authentication authentication) throws AuthenticationException { Assert.isInstanceOf(UsernamePasswordAuthenticationToken.class, authentication, messages.getMessage("AbstractUserDetailsAuthenticationProvider.onlySupports", "Only UsernamePasswordAuthenticationToken is supported")); // Determine username String username = (authentication.getPrincipal() == null) ? "NONE_PROVIDED" : authentication.getName(); boolean cacheWasUsed = true; UserDetails user = this.userCache.getUserFromCache(username); //从Ehcache实现的缓存里取userDetail对象 if (user == null) { cacheWasUsed = false; try { //调用DaoAuthenticationProvider类中的方法 user = retrieveUser(username, (UsernamePasswordAuthenticationToken) authentication); } catch (UsernameNotFoundException notFound) { logger.debug("User '" + username + "' not found"); if (hideUserNotFoundExceptions) { throw new BadCredentialsException(messages.getMessage( "AbstractUserDetailsAuthenticationProvider.badCredentials", "Bad credentials")); } else { throw notFound; } } Assert.notNull(user, "retrieveUser returned null - a violation of the interface contract"); } try { preAuthenticationChecks.check(user); //检查用户是否有效 //通过页面传入的用户名、密码和数据库中取出的信息对比验证 additionalAuthenticationChecks(user, (UsernamePasswordAuthenticationToken) authentication); } catch (AuthenticationException exception) { if (cacheWasUsed) { // There was a problem, so try again after checking // we're using latest data (i.e. not from the cache) cacheWasUsed = false; user = retrieveUser(username, (UsernamePasswordAuthenticationToken) authentication); preAuthenticationChecks.check(user); additionalAuthenticationChecks(user, (UsernamePasswordAuthenticationToken) authentication); } else { throw exception; } } postAuthenticationChecks.check(user); if (!cacheWasUsed) { this.userCache.putUserInCache(user); //将用户对象放入缓存 } Object principalToReturn = user; if (forcePrincipalAsString) { principalToReturn = user.getUsername(); } return createSuccessAuthentication(principalToReturn, authentication, user); } //代码略..................... } //数据库查询器 class DaoAuthenticationProvider extends AbstractUserDetailsAuthenticationProvider{ private UserDetailsService userDetailsService; //代码略..................... protected final UserDetails retrieveUser(String username, UsernamePasswordAuthenticationToken authentication) throws AuthenticationException { UserDetails loadedUser; try { //获取用户信息,可以通过实现UserDetailsService接口或继承JdbcDaoImpl类来自定义内部实现 loadedUser = this.getUserDetailsService().loadUserByUsername(username);//调用自定义类UserDetailsServiceImpl的方法 } catch (DataAccessException repositoryProblem) { throw new AuthenticationServiceException(repositoryProblem.getMessage(), repositoryProblem); } if (loadedUser == null) { throw new AuthenticationServiceException( "UserDetailsService returned null, which is an interface contract violation"); } return loadedUser; } protected void additionalAuthenticationChecks(UserDetails userDetails, UsernamePasswordAuthenticationToken authentication) throws AuthenticationException { Object salt = null; if (this.saltSource != null) { salt = this.saltSource.getSalt(userDetails); } if (authentication.getCredentials() == null) { logger.debug("Authentication failed: no credentials provided"); throw new BadCredentialsException(messages.getMessage( "AbstractUserDetailsAuthenticationProvider.badCredentials", "Bad credentials"), includeDetailsObject ? userDetails : null); } String presentedPassword = authentication.getCredentials().toString(); //判断密码是否一致 if (!passwordEncoder.isPasswordValid(userDetails.getPassword(), presentedPassword, salt)) { logger.debug("Authentication failed: password does not match stored value"); throw new BadCredentialsException(messages.getMessage( "AbstractUserDetailsAuthenticationProvider.badCredentials", "Bad credentials"), includeDetailsObject ? userDetails : null); } } //代码略..................... } //自定义类实现查询接口 public class UserDetailsServiceImpl extends JdbcDaoSupport implements UserDetailsService { private String authoritiesByUsernameQuery; private String usersByUsernameQuery; //代码略..................... public void setAuthoritiesByUsernameQuery(String queryString) { authoritiesByUsernameQuery = queryString; } public void setUsersByUsernameQuery(String usersByUsernameQueryString) { this.usersByUsernameQuery = usersByUsernameQueryString; } @Override public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException, DataAccessException { List users = loadUsersByUsername(username); //访问数据库查询用户信息 if (users.size() == 0) { logger.debug("Query returned no results for user '" + username + "'"); throw new UsernameNotFoundException( messages.getMessage("JdbcDaoImpl.notFound", new Object[]{username}, "Username {0} not found"), username); } UserDetails user = users.get(0); // contains no GrantedAuthority[] Set dbAuthsSet = new HashSet(); if (enableAuthorities) { dbAuthsSet.addAll(loadUserAuthorities(user.getUsername())); //查询用户拥有的角色 } if (enableGroups) { dbAuthsSet.addAll(loadGroupAuthorities(user.getUsername())); } List dbAuths = new ArrayList(dbAuthsSet); addCustomAuthorities(user.getUsername(), dbAuths); if (dbAuths.size() == 0) { logger.debug("User '" + username + "' has no authorities and will be treated as 'not found'"); throw new UsernameNotFoundException( messages.getMessage("JdbcDaoImpl.noAuthority", new Object[] {username}, "User {0} has no GrantedAuthority"), username); } return createUserDetails(username, user, dbAuths);//返回实现UserDetails接口的对象,将验证信息封装到此对象中 } protected List loadUsersByUsername(String username) { return getJdbcTemplate().query(usersByUsernameQuery, new String[]{ username}, new RowMapper() { @Override public UserDetails mapRow(ResultSet rs, int rowNum) throws SQLException { String username = rs.getString(1); String password = rs.getString(2); boolean enabled = rs.getBoolean(3); return new userDetailsImpl(username, password, enabled);//返回实现UserDetails接口的对象 } }); } //代码略..................... } //用户信息bean,必须实现UserDetails接口 public class userDetailsImpl implements UserDetails { //代码略..................... } //由ExceptionTranslationFilter过滤器调用来进行权限判断 public abstract class AbstractSecurityInterceptor implements InitializingBean, ApplicationEventPublisherAware, MessageSourceAware { //代码略..................... protected InterceptorStatusToken beforeInvocation(Object object) { //这里读取配置FilterSecurityInterceptor的SecurityMetadataSource属性来获取配置的角色,这些属性配置了资源的安全设置 Collection attributes = this.obtainSecurityMetadataSource().getAttributes(object); if (attributes == null) { if (rejectPublicInvocations) { throw new IllegalArgumentException("Secure object invocation " + object + " was denied as public invocations are not allowed via this interceptor. " + "This indicates a configuration error because the " + "rejectPublicInvocations property is set to 'true'"); } publishEvent(new PublicInvocationEvent(object)); return null; // no further work post-invocation } //这里从SecurityContextHolder中去取Authentication对象,一般在登录时会放到SecurityContextHolder中去 if (SecurityContextHolder.getContext().getAuthentication() == null) { credentialsNotFound(messages.getMessage("AbstractSecurityInterceptor.authenticationNotFound", "An Authentication object was not found in the SecurityContext"), object, attributes); } // 如果前面没有处理鉴权,这里需要对鉴权进行处理 Authentication authenticated = authenticateIfRequired(); // Attempt authorization try { //通过投票器判断当前角色是否有权限访问该地址,如果没有权限则抛出异常,调用AffirmativeBased类中的decide的方法 this.accessDecisionManager.decide(authenticated, object, attributes); } catch (AccessDeniedException accessDeniedException) { //授权不成功向外发布事件 publishEvent(new AuthorizationFailureEvent(object, attributes, authenticated, accessDeniedException)); throw accessDeniedException; } publishEvent(new AuthorizedEvent(object, attributes, authenticated)); // 这里构建一个RunAsManager来替代当前的Authentication对象,默认情况下使用的是NullRunAsManager会把SecurityContextHolder中的Authentication对象清空 Authentication runAs = this.runAsManager.buildRunAs(authenticated, object, attributes); if (runAs == null) { // no further work post-invocation return new InterceptorStatusToken(authenticated, false, attributes, object); } else { SecurityContextHolder.getContext().setAuthentication(runAs); // need to revert to token.Authenticated post-invocation return new InterceptorStatusToken(authenticated, true, attributes, object); } } //代码略..................... } //决策器 public class AffirmativeBased extends AbstractAccessDecisionManager { //代码略..................... public void decide(Authentication authentication, Object object, Collection configAttributes) throws AccessDeniedException { int deny = 0; //依次使用各个投票器进行投票,并对投票结果进行计票 for (AccessDecisionVoter voter : getDecisionVoters()) { int result = voter.vote(authentication, object, configAttributes); if (logger.isDebugEnabled()) { logger.debug("Voter: " + voter + ", returned: " + result); } //这是对投票结果进行处理,如果遇到其中一票通过,那就授权通过,如果是弃权或者反对,那就继续投票 switch (result) { case AccessDecisionVoter.ACCESS_GRANTED: //result:1 return; case AccessDecisionVoter.ACCESS_DENIED: //result:-1 //这里对反对票进行计数 deny++; break; default: break; } } //如果有反对票,抛出异常,整个授权不通过 if (deny > 0) { throw new AccessDeniedException(messages.getMessage("AbstractAccessDecisionManager.accessDenied", "Access is denied")); } //这里对弃权票进行处理,看看是全是弃权票的决定情况,默认是不通过,由allowIfAllAbstainDecisions变量控制 checkAllowIfAllAbstainDecisions(); } //代码略..................... } //角色投票器 public class RoleVoter implements AccessDecisionVoter { //代码略..................... public int vote(Authentication authentication, Object object, Collection attributes) { int result = ACCESS_ABSTAIN; Collection authorities = extractAuthorities(authentication); for (ConfigAttribute attribute : attributes) {//这里取得资源的安全配置 if (this.supports(attribute)) { result = ACCESS_DENIED; //这里对资源配置的安全授权级别进行判断,也就是匹配ROLE为前缀的角色配置 //遍历每个配置属性,如果其中一个匹配该主体持有的GrantedAuthority,则访问被允许。 //当前用户拥有的角色集合,当有任何一个角色满足时授予权限 for (GrantedAuthority authority : authorities) { if (attribute.getAttribute().equals(authority.getAuthority())) { return ACCESS_GRANTED; } } } } return result; } Collection extractAuthorities(Authentication authentication) { return authentication.getAuthorities(); } //代码略..................... }
发表评论
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Spring扩展点
2015-08-17 11:14 2627Spring扩展点 1.IOC生成类全名 <!-- ... -
Spring AOP动态代理
2015-01-25 22:23 791package com.test.dynamicproxy; ... -
Spring加载资源并装配对象的过程
2015-01-25 22:20 10611. 定义好Spring的配置文件。 2. 通过Resourc ... -
(转载)Spring Bean 初始化过程
2013-05-10 13:10 1159Spring 的几个接口 1.InitializingBea ... -
(转载)浅谈Spring事务隔离级别
2013-04-15 14:45 980一、Propagation : key属 ... -
AOP+LOG4J日志框架(自定义注解)
2013-04-11 15:00 2752工作中用到日志功能,参考网上一些资料,写了个比较通用的日志框架 ... -
(转载)spring AOP获得session
2013-02-20 17:01 2424由于Spring 的AOP面向切面编程,与Servlet容器没 ... -
Quartz(三)原理及源码分析
2012-10-30 14:56 14053quartz配置文件中可以通过以下两种配置读取方式 org.q ... -
spring-security3(一)配置详解及API扩展(包含ajax返回)
2012-04-06 17:05 3820最近对spring-security3做了一些初步了解,搜集了 ... -
AOP+Ehcache 缓存框架
2011-12-14 16:49 1680AOP+Ehcache 实现缓存功能 设计思路:查询数据,通 ... -
JTA集成JOTM或Atomikos配置分布式事务(Tomcat应用服务器)
2010-01-15 21:01 6667一.以下介绍Spring中直接集成JOTM提供JTA事务管理、 ... -
Quartz(二)整合Spring容器中bean及动态调度任务
2010-01-13 10:01 7735Quartz 是开源任务调度框架中的翘首,它提供了强大任务 ... -
Quartz(一)在Spring中设置动态定时任务
2009-05-17 07:09 7812什么是动态定时任务: 是由客户制定生成的,服务端只知道该去执行 ... -
Spring邮件发送(可带附件,模板,群发,异步发送等功能)
2009-05-17 06:27 8736以下是我对spring发送邮件的总结: 分别使用了两种方法:单 ...
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在分析`spring-security 5.0`的源码时,我们可以深入理解其核心机制,帮助我们更好地使用和扩展该框架。 1. **模块结构**: Spring Security 5.0 的源码包含多个模块,如`core`、`config`、`web`等。`core`模块...
源码分析可以帮助我们深入理解Spring Security的工作原理,而“工具”标签则表明它是一种用于提升应用程序安全性的实用工具。 在压缩包中的文件名列表中,我们看到以下几个关键文件: 1. **BaseActionSupport.java...
4. **源码分析** - **Authentication流程**: 分析AuthenticationProvider是如何验证UserDetails的,以及AuthenticationManager如何协调各个Provider。 - **Filter工作原理**: 深入理解如...