SSM整合SpringSecurity实现权限管理实例 javaconfig配置方式

2019独角兽企业重金招聘Python工程师标准>>>

1.前言

本文讲述使用javaconfig的方式整合SpringMVC+Mybatis+SpringSecurity实现基于数据库的权限系统，包括对按钮的权限控制。
使用技术： springMVC、springsecurity4、mybatis、ehcache、前端使用dataTables表格、ztree。

2.表结构介绍

标准的五张表结构。其中t_resources包含了后台系统的菜单

五张表分别为用户表，角色表，资源表，用户角色表，角色资源表。
给用户分配角色，给角色配置权限。形成动态的权限控制。一个用户可以拥有多个角色，一个角色也可以拥有多个资源(即权限)。

3.mavne配置

4.3.5.RELEASE 4.2.1.RELEASE org.springframework spring-webmvc ${spring.version} org.springframework spring-context-support ${spring.version} org.springframework.security spring-security-web ${springsecurity.version} org.springframework.security spring-security-config ${springsecurity.version} org.springframework.security spring-security-taglibs ${springsecurity.version} mysql mysql-connector-java 5.1.27 jar compile javax.servlet javax.servlet-api 3.1.0 provided jstl jstl 1.2 javax.servlet jsp-api 2.0 provided commons-logging commons-logging 1.2 org.mybatis mybatis 3.3.0 org.mybatis mybatis-spring 1.2.2 junit junit 4.12 test org.springframework spring-test ${spring.version} test com.alibaba fastjson 1.2.15 com.github.pagehelper pagehelper 4.1.4 commons-dbcp commons-dbcp 1.4 net.sf.ehcache ehcache 2.7.5 org.slf4j slf4j-api 1.7.18 org.slf4j slf4j-log4j12 1.7.18 org.apache.logging.log4j log4j-core 2.5

4.搭建SpringMVC

首先配置DispatcherServlet：

package com.study.config; import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer; public class WebProjectConfigInitializer extends AbstractAnnotationConfigDispatcherServletInitializer { /** * 加载驱动应用后端的中间层和数据层组件 / @Override protected Class[] getRootConfigClasses() { return new Class[]{RootConfig.class}; } /* 指定配置类 * 加载包含web组件的bean,如控制机器、视图解析器以及映射处理器 */ @Override protected Class[] getServletConfigClasses() { return new Class[]{WebConfig.class}; } //将DispatcherServlet 映射到“/” @Override protected String[] getServletMappings() { return new String[] { "/" }; } }

WebConfig：

主要加载包含WEB的组件bean。如控制器、视图解析器以及处理映射处理器

package com.study.config; import java.util.List; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.Configuration; import org.springframework.http.converter.HttpMessageConverter; import org.springframework.web.servlet.ViewResolver; import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer; import org.springframework.web.servlet.config.annotation.EnableWebMvc; import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter; import org.springframework.web.servlet.view.InternalResourceViewResolver; import org.springframework.web.servlet.view.JstlView; import com.alibaba.fastjson.serializer.SerializerFeature; import com.alibaba.fastjson.support.config.FastJsonConfig; import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter; @Configuration @EnableWebMvc @ComponentScan("com.study.controller") public class WebConfig extends WebMvcConfigurerAdapter { @Bean public ViewResolver viewResolver(){ InternalResourceViewResolver resolver = new InternalResourceViewResolver(); resolver.setPrefix("/jsp/"); resolver.setSuffix(".jsp"); resolver.setExposeContextBeansAsAttributes(true); resolver.setViewClass(JstlView.class); return resolver; } //配置静态资源的处理 使DispatcherServlet对静态资源的请求转发到Servlet容器默认的Servlet上，而不是使用DispatcherServlet本身来处理此类请求 @Override public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) { configurer.enable(); } /* @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/css/").addResourceLocations("classpath:/css"); registry.addResourceHandler("/js/").addResourceLocations("classpath:/js"); registry.addResourceHandler("/img/*").addResourceLocations("classpath:/img"); }/ @Override public void configureMessageConverters(List> converters) { super.configureMessageConverters(converters); FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter(); FastJsonConfig fastJsonConfig = new FastJsonConfig(); fastJsonConfig.setSerializerFeatures( SerializerFeature.PrettyFormat ); fastConverter.setFastJsonConfig(fastJsonConfig); converters.add(fastConverter); } }

RootConfig：

主要加载应用中其他bean。这些bean通常是驱动应用后端的中间层和数据层组件。

package com.study.config; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.ComponentScan.Filter; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.FilterType; import org.springframework.web.servlet.config.annotation.EnableWebMvc; @Configuration @ComponentScan(basePackages={"com.study"},excludeFilters={@Filter(type=FilterType.ANNOTATION,value=EnableWebMvc.class)}) public class RootConfig { }

5.配置Spring Security

配置Delegating-FilterProxy

package com.study.config; import org.springframework.security.web.context.AbstractSecurityWebApplicationInitializer; /** * 配置Delegating-FilterProxy * 继承AbstractSecurityWebApplicationInitializer会自动注册DelegatingFilterProxy * 等价于xml配置 * springSecurityFilterChain org.springframework.web.filter.DelegatingFilterProxy * * */ public class SecurityWebApplicationInitializer extends AbstractSecurityWebApplicationInitializer{ }

Spring Security 安全配置

ackage com.study.config; import javax.annotation.Resource; import org.springframework.context.annotation.Configuration; import org.springframework.security.authentication.encoding.Md5PasswordEncoder; 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.core.userdetails.UserDetailsService; import org.springframework.security.web.access.intercept.FilterSecurityInterceptor; import org.springframework.security.web.util.matcher.AntPathRequestMatcher; import com.study.security.MyFilterSecurityInterceptor; @Configuration @EnableWebSecurity public class WebSecurityConfig extends WebSecurityConfigurerAdapter { // @Resource // private DataSource dataSource; @Resource(name="myUserDetailService") private UserDetailsService myUserDetailService; @Resource private MyFilterSecurityInterceptor myFilterSecurityInterceptor; // @Override // public AuthenticationManager authenticationManagerBean() throws Exception { // return super.authenticationManagerBean(); // } @Override public void configure(WebSecurity web)throws Exception { // 设置不拦截规则 web.ignoring().antMatchers("/css/","/js/","/img/","/font-awesome/"); } @Override protected void configure(HttpSecurity http) throws Exception { http .addFilterBefore(myFilterSecurityInterceptor, FilterSecurityInterceptor.class)//在正确的位置添加我们自定义的过滤器 .authorizeRequests() .anyRequest().authenticated() // .and().formLogin().and() // .httpBasic(); // 自定义登录页面 .and() .formLogin().loginPage("/jsp/login.jsp") .failureUrl("/jsp/login.jsp?error=1") .loginProcessingUrl("/spring_security_check") .usernameParameter("username") .passwordParameter("password").permitAll().defaultSuccessUrl("/index.do"); //如果开启了CSRF 退出则需要使用POST访问，可以使用以下方式解决，但并不推荐 http.logout().logoutRequestMatcher(new AntPathRequestMatcher("/logout")) // 登陆成功后跳转的地址，以及删除的cookie名称 .logoutSuccessUrl("/jsp/login.jsp?error=logout") .invalidateHttpSession(true); } @Override protected void configure(AuthenticationManagerBuilder auth) throws Exception { //启用内存用户存储 /*auth.inMemoryAuthentication() .withUser("user1").password("123456").roles("USER").and() .withUser("admin").password("admin").roles("USER","ADMIN");*/ // //给予数据库表认证 /*auth.jdbcAuthentication().dataSource(dataSource) .usersByUsernameQuery("select username,password,enable from t_user where username=?") .authoritiesByUsernameQuery("select username,rolename from t_role where username=?"); */ //配置自定义的用户服务 auth.userDetailsService(myUserDetailService).passwordEncoder(new Md5PasswordEncoder()); } }

解释：以上代码实现了Spring Security 安全配置。其中@EnableWebSecurity注解将会启用WEB安全功能。
configure(WebSecurity web) 通过重载，配置Spring Security 的Filter链。
configure(HttpSecurity http)通过重载，配置如何通过拦截器保护请求。以上代码配置了自定义的过滤器 、自定义登录页面、和退出功能。其中自定义的过滤器相当于配置了对资源的授权。
configure(AuthenticationManagerBuilder auth)通过重载，配置user_detail服务，其中可以使用基于内存用户存储、基于数据库表进行认证、基于LDAP进行认证，以及自定义的用户服务。以上代码没注释的就是本文基于数据库的自定义权限认证。

自定义认证：

就是在登录时的认证操作交给Spring Security.在此处需要提供给当前登录用户所拥有的权限。即根据用户名查询上面t_resources表中的resKey 拼凑成”ROLE_XXX“ 这样形式的字符串所组成的list ，交给spirngSecurity。

package com.study.security; import java.util.HashSet; import java.util.List; import java.util.Set; import javax.annotation.Resource; 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 org.springframework.stereotype.Component; import com.study.model.Resources; import com.study.model.User; import com.study.service.ResourcesService; import com.study.service.UserService; @Component("myUserDetailService") public class MyUserDetailServiceImpl implements UserDetailsService{ @Resource private UserService userService; @Resource private ResourcesService resourcesService; @Override public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { User user = userService.findUserByName(username); if(user ==null) throw new UsernameNotFoundException(username+" not exist!"); Set authSet = new HashSet(); Resources resources = new Resources(); resources.setUsername(username); List list = resourcesService.loadMenu(resources); for (Resources r : list) { authSet.add(new SimpleGrantedAuthority("ROLE_" +r.getResKey())); } return new org.springframework.security.core.userdetails.User(user.getUsername(), user.getPassword(), user.getEnable()==1?true:false, true, true, true, authSet); } }

自定义过滤器

使访问程序时，检查当前用户是否拥有当前url的权限

package com.study.security; import java.io.IOException; import javax.annotation.PostConstruct; import javax.annotation.Resource; import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.security.access.SecurityMetadataSource; import org.springframework.security.access.intercept.AbstractSecurityInterceptor; import org.springframework.security.access.intercept.InterceptorStatusToken; import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration; import org.springframework.security.web.FilterInvocation; import org.springframework.stereotype.Component; @Component public class MyFilterSecurityInterceptor extends AbstractSecurityInterceptor implements Filter { @Autowired private MySecurityMetadataSource securityMetadataSource; @Autowired private MyAccessDecisionManager accessDecisionManager; // @Resource(name="myAuthenticationManager") // private AuthenticationManager authenticationManager; @Resource private AuthenticationConfiguration authenticationConfiguration; // @Autowired // public void setAuthenticationConfiguration(AuthenticationConfiguration authenticationConfiguration) { // this.authenticationConfiguration = authenticationConfiguration; // } @PostConstruct public void init() throws Exception{ super.setAccessDecisionManager(accessDecisionManager); super.setAuthenticationManager(authenticationConfiguration.getAuthenticationManager()); } @Override public SecurityMetadataSource obtainSecurityMetadataSource() { return this.securityMetadataSource; } public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { FilterInvocation fi = new FilterInvocation(request, response, chain); invoke(fi); } private void invoke(FilterInvocation fi) throws IOException, ServletException { // object为FilterInvocation对象 //super.beforeInvocation(fi);源码 //1.获取请求资源的权限 //执行Collection attributes = SecurityMetadataSource.getAttributes(object); //2.是否拥有权限 //this.accessDecisionManager.decide(authenticated, object, attributes); // System.err.println(" --------------- MySecurityFilter invoke--------------- "); InterceptorStatusToken token = super.beforeInvocation(fi); try { fi.getChain().doFilter(fi.getRequest(), fi.getResponse()); } finally { super.afterInvocation(token, null); } } public void init(FilterConfig arg0) throws ServletException { } public void destroy() { } @Override public Class getSecureObjectClass() { //下面的MyAccessDecisionManager的supports方面必须放回true,否则会提醒类型错误 return FilterInvocation.class; } }

以上代码涉及到MySecurityMetadataSource和MyAccessDecisionManager

MyAccessDecisionManager

package com.study.security; import java.util.Collection; import java.util.Iterator; 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.Component; /** * * */ @Component public class MyAccessDecisionManager implements AccessDecisionManager { public void decide(Authentication authentication, Object object, Collection configAttributes) throws AccessDeniedException, InsufficientAuthenticationException { if(configAttributes == null) { return; } //所请求的资源拥有的权限(一个资源对多个权限) Iterator iterator = configAttributes.iterator(); while(iterator.hasNext()) { ConfigAttribute configAttribute = iterator.next(); //访问所请求资源所需要的权限 String needPermission = configAttribute.getAttribute(); System.out.println("needPermission is " + needPermission); //用户所拥有的权限authentication for(GrantedAuthority ga : authentication.getAuthorities()) { if(needPermission.equals(ga.getAuthority())) { return; } } } //没有权限 throw new AccessDeniedException(" 没有权限访问或未重新登录！ "); } public boolean supports(ConfigAttribute attribute) { // TODO Auto-generated method stub return true; } public boolean supports(Class clazz) { // TODO Auto-generated method stub return true; } }

MySecurityMetadataSource

需要加载所有资源与权限的关系，即查询t_resources表中所有resKey与resUrl的对应关系。

package com.study.security; import java.util.ArrayList; import java.util.Collection; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.annotation.PostConstruct; import javax.annotation.Resource; 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 com.study.dao.ResourcesDao; import com.study.model.Resources; /** * 加载资源与权限的对应关系 / @Component public class MySecurityMetadataSource implements FilterInvocationSecurityMetadataSource { @Resource private ResourcesDao resourcesDao; private static Map> resourceMap = null; public Collection getAllConfigAttributes() { return null; } public boolean supports(Class clazz) { return true; } /* * @PostConstruct是Java EE 5引入的注解， * Spring允许开发者在受管Bean中使用它。当DI容器实例化当前受管Bean时， * @PostConstruct注解的方法会被自动触发，从而完成一些初始化工作， * * //加载所有资源与权限的关系 */ @PostConstruct private void loadResourceDefine() { if (resourceMap == null) { resourceMap = new HashMap>(); List list = resourcesDao.queryAll(new Resources()); for (Resources resources : list) { Collection configAttributes = new ArrayList(); // 通过资源名称来表示具体的权限 注意：必须"ROLE"开头 ConfigAttribute configAttribute = new SecurityConfig("ROLE" + resources.getResKey()); configAttributes.add(configAttribute); resourceMap.put(resources.getResUrl(), configAttributes); } } } //返回所请求资源所需要的权限 public Collection getAttributes(Object object) throws IllegalArgumentException { String requestUrl = ((FilterInvocation) object).getRequestUrl(); // System.out.println("requestUrl is " + requestUrl); if(resourceMap == null) { loadResourceDefine(); } //System.err.println("resourceMap.get(requestUrl); "+resourceMap.get(requestUrl)); if(requestUrl.indexOf("?")>-1){ requestUrl=requestUrl.substring(0,requestUrl.indexOf("?")); } Collection configAttributes = resourceMap.get(requestUrl); return configAttributes; } }

6.配置对按钮的前台显示控制

因为基于了数据库的权限控制，无法通过使用Spring Security的标签来控制对按钮的条件性渲染。不过其实可以通过,来控制显示。但是按钮所对应的Role_XXX就被限定死，而无法修改了。但是在开发阶段，只有按钮所对应操作的url是可以确定的。于是采用自定义标签，使当前的按钮根据按钮的url来确定当前用户是否拥有该url的权限，进而控制按钮的显示。自定义标签如下所示：

AuthorizeTag

package com.study.tag; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.jsp.tagext.BodyTagSupport; import org.springframework.security.core.context.SecurityContextImpl; import org.springframework.web.context.request.RequestContextHolder; import org.springframework.web.context.request.ServletRequestAttributes; import com.study.model.Resources; import com.study.service.ResourcesService; import com.study.util.SpringWiredBean; /** * 自定义标签 用于前台判断按钮权限 * @author A * */ public class AuthorizeTag extends BodyTagSupport { private static final long serialVersionUID = 1L; private String buttonUrl; public String getButtonUrl() { return buttonUrl; } public void setButtonUrl(String buttonUrl) { this.buttonUrl = buttonUrl; } @SuppressWarnings("static-access") @Override public int doStartTag() { HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest(); SecurityContextImpl securityContextImpl = (SecurityContextImpl) request .getSession().getAttribute("SPRING_SECURITY_CONTEXT"); //获取当前登录名 String name = securityContextImpl.getAuthentication().getName(); //如果数据库里有该链接，并且该用户的权限拥有该链接，则显示 。如果数据库没有该链接则不显示 ResourcesService resourcesService= (ResourcesService) SpringWiredBean.getInstance().getBeanById("resourcesService"); List queryAll = resourcesService.queryAll(); boolean flag = true; for (Resources resources : queryAll) { if(resources.getResUrl().equals(buttonUrl)) flag = false; } if(flag) //数据库中没有该链接，直接显示 return EVAL_BODY_INCLUDE; else{ Resources resources = new Resources(); resources.setUsername(name); resources.setResUrl(buttonUrl); List resourcesList = resourcesService.loadMenu(resources); if(resourcesList.size()>0) return EVAL_BODY_INCLUDE;//数据库中有该链接，并且该用户拥有该角色，显示 } return this.SKIP_BODY; //不显示 } }

以上带有用到SpringWiredBean

SpringWiredBean

package com.study.util; import org.springframework.beans.factory.BeanFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.context.support.SpringBeanAutowiringSupport; public class SpringWiredBean extends SpringBeanAutowiringSupport { /** * 自动装配注解会让Spring通过类型匹配为beanFactory注入示例 / @Autowired private BeanFactory beanFactory; private SpringWiredBean() { } private static SpringWiredBean instance; static { // 静态块，初始化实例 instance = new SpringWiredBean(); } /* * 实例方法 * 使用的时候先通过getInstance方法获取实例 * * @param beanId * @return */ public Object getBeanById(String beanId) { return beanFactory.getBean(beanId); } public static SpringWiredBean getInstance() { return instance; } }

在WEB-INF下加入authorize.tld

authorize.tld

1.0 security http://www.springsecurity.org/jsp authorize com.study.tag.AuthorizeTag JSP buttonUrl false true java.lang.String

则在前端使用时，引入上面定义的标签：

<%@ taglib uri="http://www.springsecurity.org/jsp" prefix="security"%>

然后页面上控制：

新增

7.配置Mybatis

package com.study.config; import java.util.Properties; import javax.sql.DataSource; import org.apache.commons.dbcp.BasicDataSource; import org.apache.ibatis.plugin.Interceptor; import org.apache.ibatis.session.SqlSessionFactory; import org.apache.log4j.Logger; import org.mybatis.spring.SqlSessionFactoryBean; import org.mybatis.spring.annotation.MapperScan; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.PropertySource; import org.springframework.context.support.PropertySourcesPlaceholderConfigurer; import org.springframework.core.io.support.PathMatchingResourcePatternResolver; import org.springframework.jdbc.datasource.DataSourceTransactionManager; import org.springframework.transaction.PlatformTransactionManager; import org.springframework.transaction.annotation.EnableTransactionManagement; import com.github.pagehelper.PageHelper; @Configuration //加载资源文件 @PropertySource({"classpath:jdbc.properties"}) //加上这个注解，使得支持事务 @EnableTransactionManagement @MapperScan(basePackages = {"com.study.dao"}) public class DataSourceConfig { private static final Logger logger = Logger.getLogger(DataSourceConfig.class); /* * 绑定资源属性 / @Value("${jdbc.driver}") private String driverClass; @Value("${jdbc.url}") private String url; @Value("${jdbc.username}") private String userName; @Value("${jdbc.password}") private String passWord; @Value("${maxActive}") private int maxActive; @Value("${maxIdle}") private int maxIdle; @Value("${maxWait}") private long maxWait; /* * 必须加上static / public static PropertySourcesPlaceholderConfigurer placehodlerConfigurer() { logger.info("PropertySourcesPlaceholderConfigurer"); return new PropertySourcesPlaceholderConfigurer(); } @Bean(destroyMethod="close") public BasicDataSource dataSource() { logger.info("DataSource"); BasicDataSource dataSource = new BasicDataSource(); dataSource.setDriverClassName(driverClass); dataSource.setUrl(url); dataSource.setUsername(userName); dataSource.setPassword(passWord); dataSource.setMaxActive(maxActive); dataSource.setMaxIdle(maxIdle); dataSource.setMaxWait(maxWait); return dataSource; } @Bean public PlatformTransactionManager txManager(DataSource dataSource) { return new DataSourceTransactionManager(dataSource); } @Bean public SqlSessionFactory sqlSessionFactory(DataSource dataSource) throws Exception { SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean(); sessionFactory.setDataSource(dataSource); PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(); sessionFactory.setMapperLocations(resolver.getResources("classpath:mapping/*Mapping.xml")); //配置pageHelper sessionFactory.setPlugins(new Interceptor[]{pageHelper()}); return sessionFactory.getObject(); } /*@Bean public MapperScannerConfigurer scannerConfigurer(){ MapperScannerConfigurer configurer = new MapperScannerConfigurer(); configurer.setBasePackage("com.study.dao"); configurer.setSqlSessionFactoryBeanName("sqlSessionFactory"); return configurer; }/ /** * mybatis 分页插件配置 * @return */ @Bean public PageHelper pageHelper() { logger.info("MyBatisConfiguration.pageHelper()"); PageHelper pageHelper = new PageHelper(); Properties p = new Properties(); p.setProperty("offsetAsPageNum", "true"); p.setProperty("rowBoundsWithCount", "true"); p.setProperty("reasonable", "true"); pageHelper.setProperties(p); return pageHelper; } }

以上代码，配置了dataSource、sqlSessionFactory、txManager。还配置了mybatis的分页插件pageHelper。
需要注意的是：上面代码注释了的部分，配置的MapperScannerConfigurer。当写上这段代码后，就会使因为@PropertySource注入的jdbc配置获取的值为null，导致datasource无法配置成功，后来找了一些资料，改成@MapperScan(basePackages = {“com.study.dao”})就可以了。但还在没找到原因，希望哪个大牛看到后可以给我解答，还有因为这个只是一个练习的项目，可能存在很多不妥或者欠缺的地方，各位对这个项目有建议的地方，希望留言或者发送到邮箱
yqj_lovely@163.com，在此先谢谢大家。

再附上CachingConfig

CachingConfig

ackage com.study.config; import org.apache.log4j.Logger; import org.springframework.cache.CacheManager; import org.springframework.cache.annotation.EnableCaching; import org.springframework.cache.ehcache.EhCacheCacheManager; import org.springframework.cache.ehcache.EhCacheManagerFactoryBean; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.core.io.ClassPathResource; @Configuration @EnableCaching//<!-- 启用缓存注解 --> public class CachingConfig { private static final Logger logger = Logger.getLogger(CachingConfig.class); @Bean public EhCacheManagerFactoryBean ehCacheManagerFactoryBean() { EhCacheManagerFactoryBean ehCacheManagerFactoryBean = new EhCacheManagerFactoryBean(); ehCacheManagerFactoryBean.setConfigLocation(new ClassPathResource( "ehcache.xml")); return ehCacheManagerFactoryBean; } @Bean public CacheManager cacheManager() { logger.info("EhCacheCacheManager"); EhCacheCacheManager cacheManager = new EhCacheCacheManager(); cacheManager.setCacheManager(ehCacheManagerFactoryBean().getObject()); return cacheManager; } }

8.效果图

从图中可以看到，当勾选相应的权限后，界面上的按钮也跟着消失了。

转载于:https://my.oschina.net/u/3959491/blog/2032403