JSP與Apache Shiro集成

將JSP與Apache Shiro集成可以幫助你在Web應(yīng)用程序中實(shí)現(xiàn)安全的用戶認(rèn)證和授權(quán)。以下是一個(gè)基本的步驟指南，幫助你完成這個(gè)集成：

1. 添加依賴

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

<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

創(chuàng)建一個(gè)Shiro配置類，例如ShiroConfig.java，并配置Shiro的基本組件，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);
        // 配置其他屬性，如密碼編碼器等
        return jdbcRealm;
    }

    @Bean
    public ShiroFilterChainDefinition shiroFilterChainDefinition() {
        DefaultShiroFilterChainDefinition chainDefinition = new DefaultShiroFilterChainDefinition();
        // 配置過濾器鏈
        chainDefinition.addPathDefinition("/**", "authc"); // 需要認(rèn)證的路由
        return chainDefinition;
    }
}

3. 創(chuàng)建自定義Realm

創(chuàng)建一個(gè)自定義的Realm類，例如CustomRealm.java，用于處理具體的認(rèn)證邏輯。

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;
        // 從數(shù)據(jù)庫(kù)或其他存儲(chǔ)中獲取用戶信息
        String username = upToken.getUsername();
        // 返回一個(gè)AuthenticationInfo對(duì)象
        return new SimpleAuthenticationInfo(username, username, getName());
    }

    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        String username = (String) principals.getPrimaryPrincipal();
        // 從數(shù)據(jù)庫(kù)或其他存儲(chǔ)中獲取用戶的角色和權(quán)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) {
        // 實(shí)現(xiàn)獲取用戶角色的邏輯
        return new HashSet<>();
    }

    private Set<String> getPermissionsForUser(String username) {
        // 實(shí)現(xiàn)獲取用戶權(quán)限的邏輯
        return new HashSet<>();
    }
}

4. 配置Spring集成

確保你的Spring配置能夠掃描到Shiro相關(guān)的組件。你可以在Spring配置類中添加@ComponentScan注解來掃描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頁面中使用Shiro標(biāo)簽

在你的JSP頁面中，可以使用Shiro提供的標(biāo)簽來實(shí)現(xiàn)用戶認(rèn)證和授權(quán)信息的顯示。

<%@ 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的過濾器。

<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>

通過以上步驟，你就可以在JSP頁面中使用Apache Shiro進(jìn)行用戶認(rèn)證和授權(quán)了。