springboot-拦截器+简单restfull设计

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拦截器

创建一个连接器

/**
 * 登陆检查，
 */
public class LoginHandlerInterceptor implements HandlerInterceptor {
    //目标方法执行之前
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("已进入拦截器中---拦截器方法都放行");
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }
}

将拦截器放到容器中

//使用WebMvcConfigurerAdapter可以来扩展SpringMVC的功能
 
@Configuration
public class MyMvcConfig extends WebMvcConfigurerAdapter {



    //注册拦截器
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        //SpringBoot已经做好了静态资源(*.css , *.js)映射不拦截
        registry.addInterceptor(new LoginHandlerInterceptor())
                //拦截所有
                .addPathPatterns("/**")
                //排除/    /login    login.html
                .excludePathPatterns("/login.html","/","/login");

    }
}

测试代码

简单restfull设计

功能	url	请求方式	案例
查询所有对象	/objectNameS	GET	/users
查询某个对象	/objectName/id	GET	/user/1
去添加页面	/objectName	GET	/user
添加对象	/objectName	POST	/user
去修改页面（查出对象进行信息回显）	/objectName/id	GET	/user/1
修改对象	/objectName	PUT	/user
删除对象	/objectName/id	DELETE	/user/1