springboot2.1中添加过滤器配置

2020-12-13 03:31

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1：构造一个实现 Filter 接口的过滤器，并在类上添加@component注释：

notice1:若不添加，则需在spring中注入该bean，不然会报错。

package com.dev.filter;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.*;

/**
 * Created by zgq7 on 2019/6/6.
 */
@Component
public class BaseFilter implements Filter {
    private static final Logger log = LoggerFactory.getLogger(BaseFilter.class);

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        Map

2：编写过滤器配置类，并在类上添加@Configuration注释，告诉spring声明这是一个配置类：

package com.dev.config;

import com.dev.filter.BaseFilter;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.*;
/**
 * Created by zgq7 on 2019/6/6.
 */
@Configuration
public class SpringConfig {

    @Bean
    public FilterRegistrationBean filterFilterRegistrationBean(BaseFilter baseFilter) {
        FilterRegistrationBean filterFilterRegistrationBean = new FilterRegistrationBean();

        //拦截路径配置
        List uriList = new ArrayList(10);
        uriList.add("/dev/*");

        filterFilterRegistrationBean.setFilter(baseFilter);
        filterFilterRegistrationBean.setEnabled(true);
        filterFilterRegistrationBean.setUrlPatterns(uriList);
        filterFilterRegistrationBean.setName("baseFilter");
        filterFilterRegistrationBean.setOrder(1);

        return filterFilterRegistrationBean;
    }

}

3:编写一个controller进行测试：

package com.dev.controller;

import com.google.common.collect.ImmutableMap;
import org.springframework.web.bind.annotation.*;

import java.util.Map;

/**
 * Created by zgq7 on 2019/6/6.
 */
@RestController
@RequestMapping(value = "/dev")
public class BaseController {

    @GetMapping(value = "")
    public Map