Java中shiro框架怎么调用

在Java中使用Shiro框架，可以按照以下步骤进行调用：

1. 添加Shiro依赖：在项目的pom.xml文件中添加Shiro相关的依赖，例如：

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

1. 配置Shiro：创建一个Shiro配置类，用于配置Shiro的相关参数，例如：

@Configuration
public class ShiroConfig {


    @Bean
    public Realm realm() {
    
        return new MyRealm();

    }


    @Bean
    public ShiroFilterFactoryBean shiroFilterFactoryBean() {
    
        ShiroFilterFactoryBean filterFactoryBean = new ShiroFilterFactoryBean();
    
        filterFactoryBean.setSecurityManager(securityManager());
    
        filterFactoryBean.setLoginUrl("/login");
    
        filterFactoryBean.setUnauthorizedUrl("/unauthorized");
    

        MapString, String>
     filterChainDefinitionMap = new LinkedHashMap>
    ();
    
        filterChainDefinitionMap.put("/login", "anon");
    
        filterChainDefinitionMap.put("/logout", "logout");
    
        filterChainDefinitionMap.put("/**", "authc");
    

        filterFactoryBean.setFilterChainDefinitionMap(filterChainDefinitionMap);
    
        return filterFactoryBean;

    }


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

    }

}

1. 创建自定义的Realm：实现Shiro的Realm接口，用于定义用户的身份认证和权限授权逻辑，例如：

public class MyRealm implements Realm {


    @Override
    public String getName() {
    
        return "myRealm";

    }


    @Override
    public boolean supports(AuthenticationToken token) {
    
        return token instanceof UsernamePasswordToken;

    }


    @Override
    public AuthenticationInfo getAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
    
        String username = (String) token.getPrincipal();
    
        String password = new String((char[]) token.getCredentials());
    

        // 根据用户名和密码进行身份认证逻辑

        return new SimpleAuthenticationInfo(username, password, getName());

    }


    @Override
    public AuthorizationInfo getAuthorizationInfo(PrincipalCollection principals) {
    
        String username = (String) principals.getPrimaryPrincipal();
    

        // 根据用户名进行权限授权逻辑

        SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
    
        authorizationInfo.addRole("admin");
    
        authorizationInfo.addStringPermission("user:read");
    

        return authorizationInfo;

    }

}
    

1. 使用Shiro：在需要使用Shiro进行身份认证和权限授权的地方，通过SecurityUtils获取Subject对象，然后调用其相应的方法，例如：

Subject subject = SecurityUtils.getSubject();
    
UsernamePasswordToken token = new UsernamePasswordToken(username, password);
    
subject.login(token);


if (subject.isAuthenticated()) {

    // 身份认证成功的逻辑
}
 else {

    // 身份认证失败的逻辑
}


if (subject.hasRole("admin")) {

    // 拥有admin角色的逻辑
}


if (subject.isPermitted("user:read")) {

    // 拥有user:read权限的逻辑
}
    

以上是使用Shiro框架的基本调用方法，具体根据需求可以进行更详细的配置和使用。

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