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

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

<properties>  
          
        <spring.version>4.3.5.RELEASEspring.version>  
        <springsecurity.version>4.2.1.RELEASEspringsecurity.version>
  properties> 

  <dependencies>
    <dependency>
        <groupId>org.springframeworkgroupId>
        <artifactId>spring-webmvcartifactId>
        <version>${spring.version}version>
    dependency>
     <dependency>
           <groupId>org.springframeworkgroupId>
           <artifactId>spring-context-supportartifactId>
           <version>${spring.version}version>
       dependency>

    <dependency>
        <groupId>org.springframework.securitygroupId>
        <artifactId>spring-security-webartifactId>
        <version>${springsecurity.version}version>
    dependency>
    <dependency>
        <groupId>org.springframework.securitygroupId>
        <artifactId>spring-security-configartifactId>
        <version>${springsecurity.version}version>
    dependency>
    <dependency>
         <groupId>org.springframework.securitygroupId>
         <artifactId>spring-security-taglibsartifactId>
         <version>${springsecurity.version}version>
     dependency>

      <dependency>
        <groupId>mysqlgroupId>
        <artifactId>mysql-connector-javaartifactId>
        <version>5.1.27version>
        <type>jartype>
        <scope>compilescope>
    dependency>

    <dependency>
        <groupId>javax.servletgroupId>
        <artifactId>javax.servlet-apiartifactId>
        <version>3.1.0version>
         <scope>providedscope>
    dependency>
    
    <dependency>
        <groupId>jstlgroupId>
        <artifactId>jstlartifactId>
        <version>1.2version>
    dependency>
    <dependency>
        <groupId>javax.servletgroupId>
        <artifactId>jsp-apiartifactId>
        <version>2.0version>
        <scope>providedscope>
    dependency>
    <dependency>
        <groupId>commons-logginggroupId>
        <artifactId>commons-loggingartifactId>
        <version>1.2version>
    dependency>
       
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatisartifactId>
            <version>3.3.0version>
        dependency> 
          
        <dependency>  
            <groupId>org.mybatisgroupId>  
            <artifactId>mybatis-springartifactId>  
            <version>1.2.2version>  
        dependency>  

          
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>4.12version>
            <scope>testscope>
        dependency>

        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-testartifactId>
            <version>${spring.version}version>
            <scope>testscope>
        dependency>
        <dependency>
           <groupId>com.alibabagroupId>
           <artifactId>fastjsonartifactId>
           <version>1.2.15version>
       dependency>

        <dependency>  
            <groupId>com.github.pagehelpergroupId>  
            <artifactId>pagehelperartifactId>  
            <version>4.1.4version>  
        dependency>  
      <dependency>
        <groupId>commons-dbcpgroupId>
        <artifactId>commons-dbcpartifactId>
        <version>1.4version>
    dependency>

    
     <dependency>
         <groupId>net.sf.ehcachegroupId>
         <artifactId>ehcacheartifactId>
         <version>2.7.5version>
     dependency>

        
         
            <dependency>
                <groupId>org.slf4jgroupId>
                <artifactId>slf4j-apiartifactId>
                <version>1.7.18version>
            dependency>
            

            
            <dependency>
                <groupId>org.slf4jgroupId>
                <artifactId>slf4j-log4j12artifactId>
                <version>1.7.18version>
            dependency>
            

            
            <dependency>
                <groupId>org.apache.logging.log4jgroupId>
                <artifactId>log4j-coreartifactId>
                <version>2.5version>
            dependency>
            

  dependencies>

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

package 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

    
<taglib xmlns="http://java.sun.com/xml/ns/javaee"    
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    
        xsi:schemaLocation="http://java.sun.com/xml/ns/javaee     
        http://java.sun.com/xml/ns/javaee/web-jsptaglibrary_2_1.xsd"    
        version="2.1">    
        <description>    
            
        description>    
        <tlib-version>1.0tlib-version>    
        <short-name>securityshort-name>    
        <uri>http://www.springsecurity.org/jspuri>    
        <tag>    
            <description>    
                
            description>    
            <name>authorizename>    
            <tag-class>    
                com.study.tag.AuthorizeTag
            tag-class>    
            <body-content>JSPbody-content>    
            <attribute>    
                <name>buttonUrlname>    
                <required>falserequired>    
                <rtexprvalue>truertexprvalue>    
                <type>java.lang.Stringtype>    
            attribute>    
        tag>    
    taglib>    

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：

 <security:authorize buttonUrl="/role/addRole.do">
     <button type="button" id="btn_search" onclick="$('#addRole').modal();" class="btn btn-info" style="float: right; margin-right: 1;">新增button>
security:authorize>

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
[email protected]，在此先谢谢大家。

再附上CachingConfig

CachingConfig

package 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//
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。

套了模板，但是界面还是很丑，对前台操作不太擅长，就先这样了，还有对所有的修改操作都没有做，就做了增加和删除（好吧,有点懒的）。

第一次使用时导入mytest.sql
admin 的密码为admin ,因为密码的加密是后面加入的，所以现在库里只有admin可以登录。要想使用其他用户登录，请使用admin用户重新创建用户，
并分配相应的权限。
代码下载：
github 地址 ：https://github.com/coder-yqj/springsecuritydemo
csdn 下载http://download.csdn.net/detail/poorcoder_/9818490

转载请标明出处：http://blog.csdn.net/poorcoder_/article/details/70231779