Spring boot如何基于拦截器实现访问权限限制

遇到一个需求是:要为用户设置不同的菜单、数据访问权限。对于一些特定类型的数据,有的用户可以看有的用户则不可以。一开始没有太多思路,后来一想是不是可以把"特定类型"这个参数通过@PathVariable注解加到路径上,这样就可以通过拦截器拦截后,校验此用户是否可以访问这个路径(类型)下的数据了。

话不多说,以下为具体实践

拦截器配置类

@Configuration

public class UserInterceptorConfig {

//为了保证IDbnetUserService提前实例化,能在userInterceptor使用

//ConditionalOnMissingBean可以保证只有一个IDbnetUserService的实例

@Bean

@ConditionalOnMissingBean(IDbnetUserService.class)

public IDbnetUserService dbnetUserService() {

return new DbnetUserServiceImpl();

}

//拦截器

@Bean(name = "userInterceptor")

public HandlerInterceptor userInterceptor(IDbnetUserService dbnetUserService) {

return new HandlerInterceptor() {

@Override

public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

//url = request.getRequestURI() 判断url是否可以有权限访问而返回true或者false

}

};

}

}

注册拦截器

//注册拦截器

@Bean

public WebMvcConfigurer registerInterceptor(@Qualifier("userInterceptor") HandlerInterceptor userInterceptor) {

return new WebMvcConfigurerAdapter() {

@Override

public void addInterceptors(InterceptorRegistry registry) {

//要拦截的路径

List<String> path = interceptorProperties.getPath();

//要排除的路径

List<String> excludePath = interceptorProperties.getExcludePath();

registry.addInterceptor(userInterceptor).addPathPatterns(path.stream().toArray(String[]::new))

.excludePathPatterns(excludePath.stream().toArray(String[]::new));

}

};

}

配置要拦截的路径

@Component

@ConfigurationProperties(prefix = "dbnet.interceptor")

public class InterceptorProperties {

/**

* 需要拦截的接口通配

*/

private List<String> path = new ArrayList<>();

/**

* 需要忽略的接口通配

*/

private List<String> excludePath = new ArrayList<>();

public List<String> getPath() {

return path;

}

public void setPath(List<String> path) {

this.path = path;

}

public List<String> getExcludePath() {

return excludePath;

}

public void setExcludePath(List<String> excludePath) {

this.excludePath = excludePath;

}

}

dbnet:

interceptor:

path: /dbnet/**,/datanet/**

excludePath: /dbnet/detail,/datanet/recommend,/datanet/count,/datanet/getKeys,/datenet/metadata/**

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