Springboot 如何實(shí)現(xiàn)filter攔截token驗(yàn)證和跨域

更新時(shí)間：2021年08月12日 14:34:54 作者：牧竹子

這篇文章主要介紹了Springboot 如何實(shí)現(xiàn)filter攔截token驗(yàn)證和跨域操作，具有很好的參考價(jià)值，希望對大家有所幫助。如有錯(cuò)誤或未考慮完全的地方，望不吝賜教

Springboot filter攔截token驗(yàn)證和跨域

背景

web驗(yàn)證授權(quán)合法的一般分為下面幾種

使用session作為驗(yàn)證合法用戶訪問的驗(yàn)證方式
使用自己實(shí)現(xiàn)的token
使用OCA標(biāo)準(zhǔn)

在使用API接口授權(quán)驗(yàn)證時(shí)，token是自定義的方式實(shí)現(xiàn)起來不需要引入其他東西，關(guān)鍵是簡單實(shí)用。

合法登陸后一般使用用戶UID+鹽值+時(shí)間戳使用多層對稱加密生成token并放入分布式緩存中設(shè)置固定的過期時(shí)間長（和session的方式有些相同），這樣當(dāng)用戶訪問時(shí)使用token可以解密獲取它的UID并據(jù)此驗(yàn)證其是否是合法的用戶。

#springboot中實(shí)現(xiàn)filter

一種是注解filter
一種是顯示的硬編碼注冊filter

先有filter

import javax.servlet.annotation.WebFilter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import springfox.documentation.spring.web.json.Json;
import com.alibaba.fastjson.JSON; 
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/***************
 * token驗(yàn)證攔截
 * @author bamboo zjcjava@163.com
 * @time 2017-08-01
 */
@Component
//@WebFilter(urlPatterns = { "/api/v/*" }, filterName = "tokenAuthorFilter")
public class TokenAuthorFilter implements Filter {
 private static Logger logger = LoggerFactory
   .getLogger(TokenAuthorFilter.class);
 @Override
 public void destroy() {
 }
 @Override
 public void doFilter(ServletRequest request, ServletResponse response,
   FilterChain chain) throws IOException, ServletException {
  HttpServletRequest req = (HttpServletRequest) request;
  HttpServletResponse rep = (HttpServletResponse) response;
  //設(shè)置允許跨域的配置
  // 這里填寫你允許進(jìn)行跨域的主機(jī)ip（正式上線時(shí)可以動(dòng)態(tài)配置具體允許的域名和IP）
  rep.setHeader("Access-Control-Allow-Origin", "*");
  // 允許的訪問方法
  rep.setHeader("Access-Control-Allow-Methods","POST, GET, PUT, OPTIONS, DELETE, PATCH");
  // Access-Control-Max-Age 用于 CORS 相關(guān)配置的緩存
  rep.setHeader("Access-Control-Max-Age", "3600");
  rep.setHeader("Access-Control-Allow-Headers","token,Origin, X-Requested-With, Content-Type, Accept");
  response.setCharacterEncoding("UTF-8");
  response.setContentType("application/json; charset=utf-8");
  String token = req.getHeader("token");//header方式
  ResultInfo resultInfo = new ResultInfo();
  boolean isFilter = false;  
   
  String method = ((HttpServletRequest) request).getMethod();
  if (method.equals("OPTIONS")) {
   rep.setStatus(HttpServletResponse.SC_OK);
  }else{
      
   if (null == token || token.isEmpty()) {
    resultInfo.setCode(Constant.UN_AUTHORIZED);
    resultInfo.setMsg("用戶授權(quán)認(rèn)證沒有通過!客戶端請求參數(shù)中無token信息");
   } else {
    if (TokenUtil.volidateToken(token)) {
     resultInfo.setCode(Constant.SUCCESS);
     resultInfo.setMsg("用戶授權(quán)認(rèn)證通過!");
     isFilter = true;
    } else {
     resultInfo.setCode(Constant.UN_AUTHORIZED);
     resultInfo.setMsg("用戶授權(quán)認(rèn)證沒有通過!客戶端請求參數(shù)token信息無效");
    }
   }
   if (resultInfo.getCode() == Constant.UN_AUTHORIZED) {// 驗(yàn)證失敗
    PrintWriter writer = null;
    OutputStreamWriter osw = null;
    try {
     osw = new OutputStreamWriter(response.getOutputStream(),
       "UTF-8");
     writer = new PrintWriter(osw, true);
     String jsonStr = JSON.toJSONString(resultInfo);
     writer.write(jsonStr);
     writer.flush();
     writer.close();
     osw.close();
    } catch (UnsupportedEncodingException e) {
     logger.error("過濾器返回信息失敗:" + e.getMessage(), e);
    } catch (IOException e) {
     logger.error("過濾器返回信息失敗:" + e.getMessage(), e);
    } finally {
     if (null != writer) {
      writer.close();
     }
     if (null != osw) {
      osw.close();
     }
    }
    return;
   }
   
   if (isFilter) {
   logger.info("token filter過濾ok!");
   chain.doFilter(request, response);
   }
  } 
 }
 @Override
 public void init(FilterConfig arg0) throws ServletException {
 }
}

注解配置filter

加上如下配置則啟動(dòng)時(shí)會(huì)根據(jù)注解加載此filter

@WebFilter(urlPatterns = { “/api/*” }, filterName = “tokenAuthorFilter”)

硬編碼注冊filter

在application.java中加入如下代碼

    //注冊filter
    @Bean  
    public FilterRegistrationBean  filterRegistrationBean() {  
        FilterRegistrationBean registrationBean = new FilterRegistrationBean();  
        TokenAuthorFilter tokenAuthorFilter = new TokenAuthorFilter();  
        registrationBean.setFilter(tokenAuthorFilter);  
        List<String> urlPatterns = new ArrayList<String>();  
        urlPatterns.add("/api/*");
        registrationBean.setUrlPatterns(urlPatterns);  
        return registrationBean;  
    }

以上兩種方式都可以實(shí)現(xiàn)filter

跨域說明

springboot可以設(shè)置全局跨域，但是對于filter中的攔截地址并不其中作用，因此需要在dofilter中再次設(shè)置一次

區(qū)局設(shè)置跨域方式如下

方式1.在application.java中加入如下代碼

 //跨域設(shè)置
 private CorsConfiguration buildConfig() {  
        CorsConfiguration corsConfiguration = new CorsConfiguration();  
        corsConfiguration.addAllowedOrigin("*");  
        corsConfiguration.addAllowedHeader("*");  
        corsConfiguration.addAllowedMethod("*");         
        return corsConfiguration;  
    }  
      
    /** 
     * 跨域過濾器 
     * @return 
     */  
    @Bean  
    public CorsFilter corsFilter() {  
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();  
        source.registerCorsConfiguration("/**", buildConfig()); // 4  
        return new CorsFilter(source);  
    }

方式2.配置注解

必須集成WebMvcConfigurerAdapter類

/**********
 * 跨域 CORS:使用 方法3
 * 方法:
 1服務(wù)端設(shè)置Respone Header頭中Access-Control-Allow-Origin
 2配合前臺(tái)使用jsonp
 3繼承WebMvcConfigurerAdapter 添加配置類
 http://blog.csdn.net/hanghangde/article/details/53946366
 * @author xialeme
 *
 */
@Configuration  
public class CorsConfig extends WebMvcConfigurerAdapter{  
  
   /* @Override  
    public void addCorsMappings(CorsRegistry registry) {  
        registry.addMapping("/**")  
                .allowedOrigins("*")  
                .allowCredentials(true)  
                .allowedMethods("GET", "POST", "DELETE", "PUT")  
                .maxAge(3600);  
    }  */
  
 private CorsConfiguration buildConfig() {
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.addAllowedOrigin("*"); // 1
        corsConfiguration.addAllowedHeader("*"); // 2
        corsConfiguration.addAllowedMethod("*"); // 3
        return corsConfiguration;
    }
    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", buildConfig()); // 4
        return new CorsFilter(source);
    }     
}

springboot配置Filter & 允許跨域請求

1.filter類

加注解：

@WebFilter(filterName = "authFilter", urlPatterns = "/*")

代碼如下：

package com.activiti.filter; 
import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
 
// renwenqiang
@WebFilter(filterName = "authFilter", urlPatterns = "/*")
public class SystemFilter implements Filter {
 
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException,
            ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        response.setHeader("Access-Control-Allow-Origin","*");
        System.out.println(request.getRequestURL());
        filterChain.doFilter(request, servletResponse);
    }
 
    @Override
    public void destroy() { 
    }
 
    @Override
    public void init(FilterConfig arg0) throws ServletException { 
    }
}

2.啟動(dòng)類

加注解：

@ServletComponentScan(basePackages = {"com.activiti.filter"})

代碼如下：

package com; 
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.orm.jpa.vendor.HibernateJpaSessionFactoryBean;
import org.springframework.scheduling.annotation.EnableScheduling;
 
@SpringBootApplication(exclude = {
        org.springframework.boot.autoconfigure.security.SecurityAutoConfiguration.class,
        org.activiti.spring.boot.SecurityAutoConfiguration.class })
@ServletComponentScan(basePackages = {"com.activiti.filter"})
public class DemoActiviti0108Application {
    
    @Bean
    public HibernateJpaSessionFactoryBean sessionFactory() {
        return new HibernateJpaSessionFactoryBean();
    }
 
    public static void main(String[] args) {
        SpringApplication.run(DemoActiviti0108Application.class, args);
    } 
}

3.jquery ajax請求代碼實(shí)例：

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
</head>
<body>
<div id="app">
<hr>
<h2>模型列表</h2>
<a href="#" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  id="huizhi">繪制流程</a>
<hr>
<table border="1">
    <tr>
        <td>id</td>
        <td>deploymentId</td>
        <td>name</td>
        <td>category</td>
        <td>optional</td>
    </tr>
    <tr v-for="item in models">
        <td>{{ item.id }}</td>
        <td>{{ item.deploymentId }}</td>
        <td>{{ item.name }}</td>
        <td>{{ item.category }}</td>
        <td>
            <a href="#" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >編輯</a>&nbsp;&nbsp;
            <a href="#" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >發(fā)布</a>&nbsp;&nbsp;
            <a href="#" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >刪除</a>
        </td>
    </tr>
</table>
</div>
 
    <script src="https://cdn.bootcss.com/jquery/2.2.2/jquery.js"></script>
    <script src="https://cdn.bootcss.com/vue/2.6.10/vue.js"></script>
    <script>
    new Vue({
      el: '#app',
      data: {
        models: []
      },
      created: function () {
        $.ajax({
            type: 'GET',
            url: 'http://localhost:8081/activiti/model/all',
            beforeSend: function() {
                console.log('beforeSend');
            },
            data:{},
            dataType: "json",
            xhrFields: {
                withCredentials: false
            },
            crossDomain: true,
            async: true,
            //jsonpCallback: "jsonpCallback",//服務(wù)端用于接收callback調(diào)用的function名的參數(shù)  
        }).done((data) => {
            console.log('done');
            console.log(data);
            this.models = data;
        }).fail((error) => {
            console.log('fail');
            console.log('error');
        });
      }
    })        
    </script> 
</body>
</html>

大功告成回家睡覺嘻嘻嘻~

以上為個(gè)人經(jīng)驗(yàn)，希望能給大家一個(gè)參考，也希望大家多多支持腳本之家。

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Springboot 如何實(shí)現(xiàn)filter攔截token驗(yàn)證和跨域

Springboot filter攔截token驗(yàn)證和跨域

背景

注解配置filter

硬編碼注冊filter

跨域說明

方式1.在application.java中加入如下代碼

方式2.配置注解

springboot配置Filter & 允許跨域請求

1.filter類

2.啟動(dòng)類

3.jquery ajax請求代碼實(shí)例：

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国产无遮挡裸体免费直播视频,久久精品国产蜜臀av,动漫在线视频一区二区,欧亚日韩一区二区三区,久艹在线 免费视频,国产精品美女网站免费,正在播放 97超级视频在线观看,斗破苍穹年番在线观看免费,51最新乱码中文字幕

Springboot 如何實(shí)現(xiàn)filter攔截token驗(yàn)證和跨域

Springboot filter攔截token驗(yàn)證和跨域

背景

注解配置filter

硬編碼注冊filter

跨域說明

方式1.在application.java中加入如下代碼

方式2.配置注解

springboot配置Filter & 允許跨域請求

1.filter類

2.啟動(dòng)類

3.jquery ajax請求代碼實(shí)例：

相關(guān)文章

最新評(píng)論

大家感興趣的內(nèi)容

最近更新的內(nèi)容

常用在線小工具

国产无遮挡裸体免费直播视频,久久精品国产蜜臀av,动漫在线视频一区二区,欧亚日韩一区二区三区,久艹在线免费视频,国产精品美女网站免费,正在播放 97超级视频在线观看,斗破苍穹年番在线观看免费,51最新乱码中文字幕