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：

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>

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

@Configurationpublic 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");        Map<String, 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;    }}

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;    }}

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。