宁波实习第七天日志（登录权限管理springsecurity）

1.在项目下的pom.xml文件中分别加入以下两段内容：

<spring.security.version>5.0.1.RELEASE</spring.security.version>

	<dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-web</artifactId>
        <version>${spring.security.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-config</artifactId>
        <version>${spring.security.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-core</artifactId>
        <version>${spring.security.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-taglibs</artifactId>
        <version>${spring.security.version}</version>
    </dependency>

2.WEB-INF目录下的web.xml文件中添加过滤器

代码如下：

<filter>
    <filter-name>springSecurityFilterChain</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>springSecurityFilterChain</filter-name>
    <url-pattern>/*

3.将springSecurity.xml文件导入resources目录下

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:security="http://www.springframework.org/schema/security"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/security
    http://www.springframework.org/schema/security/spring-security.xsd">

    <security:global-method-security pre-post-annotations="enabled" jsr250-annotations="enabled" secured-annotations="enabled"></security:global-method-security>

    <!-- 配置不拦截的资源 -->
    <security:http pattern="/login.jsp" security="none"/>
    <security:http pattern="/failer.jsp" security="none"/>
    <security:http pattern="/css/**" security="none"/>
    <security:http pattern="/img/**" security="none"/>
    <security:http pattern="/plugins/**" security="none"/>
    <!--
    	配置具体的规则
    	auto-config="true"	不用自己编写登录的页面，框架提供默认登录页面
    	use-expressions="false"	是否使用SPEL表达式（没学习过）
    -->
    <security:http auto-config="true" use-expressions="true">
        <!-- 配置具体的拦截的规则 pattern="请求路径的规则" access="访问系统的人，必须有ROLE_USER的角色" -->
        <security:intercept-url pattern="/**" access="hasAnyRole('ROLE_USER','ROLE_ADMIN')"/>

        <security:form-login login-page="/login.jsp"
                             login-processing-url="/login.do"
                            default-target-url="/index.jsp"
                            authentication-failure-url="/failer.jsp"
                            authentication-success-forward-url="/pages/main.jsp"/>

        <!-- 关闭跨域请求 -->
        <security:csrf disabled="true"/>

        <!--退出并跳转到首页-->
        <security:logout invalidate-session="true" logout-url="/logout.do" logout-success-url="/login.jsp"></security:logout>

    </security:http>

    <!-- 切换成数据库中的用户名和密码 -->
    <security:authentication-manager>
        <security:authentication-provider user-service-ref="userService">
            <!-- 配置加密的方式
            <security:password-encoder ref="passwordEncoder"/>　-->
        </security:authentication-provider>
    </security:authentication-manager>

    <!-- 配置加密类 -->
    <bean id="passwordEncoder" class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder"/>
    <!-- <bean id="webexpressionHandler" class="org.springframework.security.web.access.expression.DefaultWebSecurityExpressionHandler" />-->
    <!-- 提供了入门的方式，在内存中存入用户名和密码
    <security:authentication-manager>
    	<security:authentication-provider>
    		<security:user-service>
    			<security:user name="admin" password="{noop}admin" authorities="ROLE_USER"/>
    		</security:user-service>
    	</security:authentication-provider>
    </security:authentication-manager>
    -->

</beans>

4.web.xml 里面加载springSecurity.xml

<!-- 配置加载类路径的配置文件 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath*:applicationContext.xml,classpath*:spring-security.xml</param-value>
  </context-param>

5.在com.zhongruan.bean下新建Role.java

package com.zhongruan.bean;

import java.util.List;

public class Role {
    private int id;
    private String rolename;
    private String roledesc;
    //private List roles;
    public int getId() {
        return id;
    }



    public void setId(int id) {
        this.id = id;
    }

    public String getRoleName() {
        return rolename;
    }

    public void setRoleName(String roleName) {
        this.rolename = roleName;
    }

    public String getRoleDesc() {
        return roledesc;
    }

    public void setRoleDesc(String roleDesc) {
        this.roledesc = roleDesc;
    }

    @Override
    public String toString() {
        return "Role{" +
                "id=" + id +
                ", rolename='" + rolename + '\'' +
                ", roledesc='" + roledesc + '\'' +
                '}';
    }

}

6.Dao包中新建接口IRoleDao

package com.zhongruan.dao;
import com.zhongruan.bean.Role;
import java.util.List;

public interface IRoleDao {
    public List<Role> findRolebyUserId (int userId);
}

7.Mapper包中新建RoleMapper.xml文件实现接口IRoleDao的函数

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.zhongruan.dao.IRoleDao" >

    <select id="findRolebyUserId" parameterType="int" resultType="com.zhongruan.bean.Role">
            select * from role where id in (select roleId from users_role where userId=#{userId})
    </select>

</mapper>

8.IUserInfoDao接口中加入 findByUserName函数

 public UserInfo findByUserName(String username);

9.UserInfoMapper.xml文件中实现 findByUserName函数

<select id="findByUserName" parameterType="String" resultType="com.zhongruan.bean.UserInfo">
        SELECT * FROM userinfo WHERE username=#{username}
</select>

10.修改UserInfoServiceImpl

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        UserInfo userInfo=userInfoDao.findByUserName(username);
        System.out.println(userInfo.getId());
        List<Role>roles=roleDao.findRolebyUserId(userInfo.getId());
        System.out.println(roles);
        User user=new User(userInfo.getUsername(),"{noop}"+userInfo.getPassword(),getAuthority(roles));
        return user;

    }

    private List<SimpleGrantedAuthority> getAuthority(List<Role> roles) {
        List<SimpleGrantedAuthority> list=new ArrayList<>();
        for(Role role:roles){
            list.add(new SimpleGrantedAuthority("ROLE_"+role.getRoleName()));
        }
        return list;
    }

11.修改登录界面jsp文件

成果展示