宁波暑期实习Day8

最新推荐文章于 2024-06-06 05:04:03 发布

原创最新推荐文章于 2024-06-06 05:04:03 发布 · 196 阅读

0 ·

CC 4.0 BY-SA版权

实习专栏收录该内容

4 篇文章

订阅专栏

主要实现：SSM框架下使用springSecurity实现登录的认证与授权
认证：即判断登录用户的用户名和密码是否正确
授权：即判断该用户可以执行哪些操作，对哪些页面有访问权限

一、前期准备

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>

加入到properties中用来声明版本

 <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>

加入到dependencies中用来声明引入的jar包

2.在WEB-INF目录下的web.xml文件中添加过滤器，即在该文件中添加代码如下

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

3.spring-security.xml核心配置文件

<?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">
&lt;security:global-method-security pre-post-annotations="enabled" jsr250-annotations="enabled" secured-annotations="enabled"&gt;&lt;/security:global-method-security&gt;

&lt;!-- 配置不拦截的资源 --&gt;
&lt;security:http pattern="/login.jsp" security="none"/&gt;
&lt;security:http pattern="/failer.jsp" security="none"/&gt;
&lt;security:http pattern="/css/**" security="none"/&gt;
&lt;security:http pattern="/img/**" security="none"/&gt;
&lt;security:http pattern="/plugins/**" security="none"/&gt;
&lt;!--
   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）
--&gt;
&lt;security:http auto-config="true" use-expressions="true"&gt;
    &lt;!-- 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" --&gt;
    &lt;security:intercept-url pattern="/**" access="hasAnyRole('ROLE_USER','ROLE_ADMIN')"/&gt;

    &lt;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"/&gt;

    &lt;!-- 关闭跨域请求 --&gt;
    &lt;security:csrf disabled="true"/&gt;

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

&lt;/security:http&gt;

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

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

加载springSecurity.xml：

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，如下图

在这里插入图片描述
在数据库中新建两张表role和user_role

表中的数据如下
role表

user_role表

在这里插入图片描述

二、改代码

1.UserService.java接口继承UserDetailsService
在这里插入图片描述
首先要在IUserInfoDao中定义findUserByName方法，并在UserMapper.xml中实现

在这里插入图片描述
UserInfo.xml中增加

<select id="findUserByName" parameterType="String" resultType="com.zhongruan.bean.UserInfo">
    select * from userinfo where name=#{name}
</select>
1
2
3

2.增加Role实体类

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 + '\'' +
            '}';
}

3.增加IRoleDao接口

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);
}


4.新建RoleMapper.xml
<?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 user_role where userId=#{userId})
    </select>

5.改写UserInfoServiceImpl
@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

6.修改login.jsp

修改响应路径即可