JSP与Apache Shiro集成

发布时间：2024-11-13 16:58:03 作者：小樊
来源：亿速云阅读：79

将JSP与Apache Shiro集成可以帮助你在Web应用程序中实现安全的用户认证和授权。以下是一个基本的步骤指南，帮助你完成这个集成：

1. 添加依赖

首先，你需要在你的项目中添加Apache Shiro的依赖。如果你使用的是Maven，可以在pom.xml文件中添加以下依赖：

<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-core</artifactId>
    <version>1.7.1</version>
</dependency>
<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-spring</artifactId>
    <version>1.7.1</version>
</dependency>
<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-web</artifactId>
    <version>1.7.1</version>
</dependency>

2. 配置Shiro

创建一个Shiro配置类，例如ShiroConfig.java，并配置Shiro的基本组件，如SecurityManager、Realm等。

import org.apache.shiro.mgt.DefaultSecurityManager;
import org.apache.shiro.realm.Realm;
import org.apache.shiro.realm.jdbc.JdbcRealm;
import org.apache.shiro.spring.web.config.DefaultShiroFilterChainDefinition;
import org.apache.shiro.spring.web.config.ShiroFilterChainDefinition;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;

@Configuration
public class ShiroConfig {

    @Bean
    public DefaultWebSecurityManager securityManager(Realm realm) {
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        securityManager.setRealm(realm);
        return securityManager;
    }

    @Bean
    public Realm realm(DataSource dataSource) {
        JdbcRealm jdbcRealm = new JdbcRealm();
        jdbcRealm.setDataSource(dataSource);
        // 配置其他属性，如密码编码器等
        return jdbcRealm;
    }

    @Bean
    public ShiroFilterChainDefinition shiroFilterChainDefinition() {
        DefaultShiroFilterChainDefinition chainDefinition = new DefaultShiroFilterChainDefinition();
        // 配置过滤器链
        chainDefinition.addPathDefinition("/**", "authc"); // 需要认证的路由
        return chainDefinition;
    }
}

3. 创建自定义Realm

创建一个自定义的Realm类，例如CustomRealm.java，用于处理具体的认证逻辑。

import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;

import java.util.HashSet;
import java.util.Set;

public class CustomRealm extends AuthorizingRealm {

    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        UsernamePasswordToken upToken = (UsernamePasswordToken) token;
        // 从数据库或其他存储中获取用户信息
        String username = upToken.getUsername();
        // 返回一个AuthenticationInfo对象
        return new SimpleAuthenticationInfo(username, username, getName());
    }

    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        String username = (String) principals.getPrimaryPrincipal();
        // 从数据库或其他存储中获取用户的角色和权限
        Set<String> roles = getRolesForUser(username);
        Set<String> permissions = getPermissionsForUser(username);
        SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
        authorizationInfo.addRoles(roles);
        authorizationInfo.addStringPermissions(permissions);
        return authorizationInfo;
    }

    private Set<String> getRolesForUser(String username) {
        // 实现获取用户角色的逻辑
        return new HashSet<>();
    }

    private Set<String> getPermissionsForUser(String username) {
        // 实现获取用户权限的逻辑
        return new HashSet<>();
    }
}

4. 配置Spring集成

确保你的Spring配置能够扫描到Shiro相关的组件。你可以在Spring配置类中添加@ComponentScan注解来扫描Shiro包。

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

@Configuration
@ComponentScan(basePackages = {"org.apache.shiro", "com.yourpackage"})
public class AppConfig {
}

5. 在JSP页面中使用Shiro标签

在你的JSP页面中，可以使用Shiro提供的标签来实现用户认证和授权信息的显示。

<%@ taglib prefix="shiro" uri="http://shiro.apache.org/tags" %>
<!DOCTYPE html>
<html>
<head>
    <title>Shiro Integration Example</title>
</head>
<body>
    <h1>Welcome, ${pageContext.request.userPrincipal.name}!</h1>
    <p>You have the following roles: <shiro:collect name="roles" /></p>
    <p>You have the following permissions: <shiro:collect name="permissions" /></p>
</body>
</html>

6. 配置web.xml

在web.xml中配置Shiro的过滤器。

<filter>
    <filter-name>shiroFilter</filter-name>
    <filter-class>org.apache.shiro.web.servlet.ShiroFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>shiroFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

通过以上步骤，你就可以在JSP页面中使用Apache Shiro进行用户认证和授权了。