基于jfinal Template的Shiro 标签

<shiro:guest>  
    用户未登录状态显示
</shiro:guest>  

<shiro:user>  
    欢迎[<shiro:principal/>]登录
</shiro:user>  

public class GuestTag extends Directiv {
    private Subject getSubject() {
        return SecurityUtils.getSubject();
    }
    
    public void exec(Env env, Scope scope, Writer writer) {
        if (getSubject() == null || getSubject().getPrincipal() == null)
            stat.exec(env, scope, writer);
    }

    public boolean hasEnd() {
        return true;
    }
}


在config中配置
public void configEngine(Engine me) {
     me.addDirective("guest", new GuestTag());
}

页面中使用
#guest()
    用户未登录状态显示
#end

public class HasRoleTag extends Directiv {
    private Expr[] exprs;
    
     private Subject getSubject() {
        return SecurityUtils.getSubject();
    }
    
    public void setExprList(ExprList exprList) {
        exprs = exprList.getExprArray();
    }

    public void exec(Env env, Scope scope, Writer writer) {
        boolean hasRole = false;
        if (getSubject() != null && ArrayUtil.isNotEmpty(exprs))
            if (getSubject().hasRole(exprs[0].toString()))
                hasRole = true;

        if (hasRole)
            stat.exec(env, scope, writer);
    }

    public boolean hasEnd() {
        return true;
    }

}


页面中使用

#hasRole(roleName)
    body
#end

public class ShiroTag {
    private Subject getSubject() {
        return SecurityUtils.getSubject();
    }
   
    public boolean isGuest() {
        return getSubject() == null || getSubject().getPrincipal() == null;
    }
 
    public boolean hasRole(String roleName) {
        return getSubject() != null && getSubject().hasRole(roleName);
    }
 
  
    public boolean lacksRole(String roleName) {
        boolean hasRole = getSubject() != null
                && getSubject().hasRole(roleName);
        return !hasRole;
    }
}

public void configEngine(Engine me) {
    me.addSharedObject("shiro",ShiroTag);
}

页面使用
#if(shiro.hasRole(roleName))
body
#end

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@Documented
//@Inherited 不继承
public @interface DefineDirective {
    /**
     * 标签名称
     *
     * @return String
     */
    String tag() default "";
}


@DefineDirective(tag = "hasRole")
public class HasRoleTag extends Directiv {...}

    //classUtils  使用的是 hutool 工具包的方法。。。
    public static void addShiroDefineDirective(Engine me) {
        Set<Class<?>> classes = ClassUtil.scanPackageByAnnotation(defineDirective, DefineDirective.class);
        for (Class<?> clazz : classes) {
            DefineDirective defineDirective = clazz.getAnnotation(DefineDirective.class);
            String tag = defineDirective.tag();
            if (StrUtil.isNotEmpty(tag)) {
                me.addDirective(tag, (Directive) ClassUtil.newInstance(clazz));
            } else {
                LogKit.error("自定义Directive的标签为空无效：" + clazz.getName());
            }
        }
    }

public void configEngine(Engine me) {
    EngineKit.addShiroDefineDirective(me);
}