springSecurity实现登录的认证与授权——实习日志7.17

1.Maven中的pom.xml配置所依赖的包

<!--放在properties属性中-->
<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.在WEB-INF目录下的web.xml文件中添加过滤器

<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>/*</url-pattern>
  </filter-mapping>

<?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="userInfoService">
            <!-- 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>

3.在web.xml 里面加载springSecurity.xml，方法是在该文件中的context-param中的param-value新增classpath：spring-security.xml

4.在数据库中新建两张表role和user_role

相关代码：

package com.zhongruan.bean;

public class Role {
    private int id;
    private String roleName;
    private String roleDesc;

    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 + '\'' +
                '}';
    }
}

package com.zhongruan.dao;

import com.zhongruan.bean.Role;

import javax.print.DocFlavor;
import java.util.List;

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

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

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

    }
    return list;
}

可以将UserInfoController中的login.do方法注释掉
修改login.jsp
修改响应路径即可