一、SpringBoot整合拦截器

1.添加拦截器

package com.by.interceptor;import com.by.pojo.User;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;@Component
public class LoginInterceptor implements HandlerInterceptor {@Overridepublic boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {Object user = request.getSession().getAttribute("user");if(user!=null){return true;}response.sendRedirect("/");return false;}
}

2.配置拦截器

@Component
public class SpringMVCConfig implements WebMvcConfigurer {@Autowiredprivate LoginInterceptor loginInterceptor;//配置拦截器@Overridepublic void addInterceptors(InterceptorRegistry registry) {//registry.addInterceptor(new LoginInterceptor()).addPathPatterns("/user/**").excludePathPatterns("/user/login");registry.addInterceptor(loginInterceptor).addPathPatterns("/user/**").excludePathPatterns("/user/login");}
}

3.运用拦截器

二、SpringBoot整合日期转换器

1.添加日期转换器

package com.by.converter;import java.text.ParseException;
import java.util.Date;import org.springframework.core.convert.converter.Converter;
import org.apache.commons.lang3.time.DateUtils;public class DateConverter implements Converter<String, Date>{/*** 配置日期转换器* @param str* @return*/@Overridepublic Date convert(String str) {try {String[] patterns = new String[]{"yyyy-MM-dd","yyyy-MM-dd hh:mm:ss","yyyy/MM/dd","yyyy/MM/dd hh:mm:ss","MM-dd-yyyy","dd-MM-yyyy"};return DateUtils.parseDate(str, patterns);} catch (ParseException e) {e.printStackTrace();}return null;}
}

2.配置日期转换器

• 说明

  WebMvcConfigurer配置类其实是Spring内部的一种配置方式，采用JavaBean的形式来代替传统的xml配置文件形式针对框架进行个性化定制，例如：拦截器，类型转化器等等。

• 代码示例

@Component
public class SpringMVCConfig implements WebMvcConfigurer {//配置日期转换器@Overridepublic void addFormatters(FormatterRegistry registry) {registry.addConverter(new DateConverter());}
}