Spring Boot
目录
过滤器
配置过滤器 Filter 来对特定类的方法做是否登录的判断
添加 Filter 的方法:
- 创建过滤器
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public class EncodingFilter implements Filter { private static final String CONTENT_TYPE = "text/html;charset=UTF-8"; public EncodingFilter() { } public void destroy() { } public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); response.setContentType("text/html;charset=UTF-8"); chain.doFilter(request, response); } public void init(FilterConfig filterConfig) throws ServletException { } }
- 配置类注解
@Configuration
- 配置类方法注解
@Bean
- 配置类方法内容:
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FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(); filterRegistrationBean.setOrder(3); // 设置过滤顺序,越小越先执行 filterRegistrationBean.setFilter(new YourFilter()); // 设置过滤器 filterRegistrationBean.setName("customFilter"); // 设置过滤器名称 filterRegistrationBean.addUrlPatterns("*.action"); // 设置使用该过滤器的 Url 特征 return filterRegistrationBean;
见:
https://www.jianshu.com/p/05c8be17c80a
问题集
如何验证用户是否已登录?
如何配置过滤器
@Configuration
任意类都可以加上 @Configuration 么
Spring Boot 扫描的规则是什么
@ComponentScan 和 @ServletComponentScan 有什么区别?
为什么教程说 @ServletComponentScan ,而实际使用自带的 @SpringBootApplication (包含 @ComponentScan)就可以?@WebServlet, @WebFilter, and @WebListener annotated classes can be automatically registered with an embedded Servlet container by annotating @ServletComponentScan on a @Configuration class and specifying the packages.
为何例子里面没有 @WebFilter
如何读取配置文件
http://idea.medeming.com/jetbrains/
https://www.cnblogs.com/oucbl/p/11664610.html#_label1
https://github.com/ddd-by-examples/factory
概念数据模型 Conceptual Data Models