@Configuration
public class CorsConfig {
    // 网关跨域和controller 只能有一个，因此将此处注掉！
    @Bean
    public CorsWebFilter corsFilter() {
        CorsConfiguration config = new CorsConfiguration();
        config.addAllowedMethod("*");
        config.addAllowedOrigin("*");
        config.addAllowedHeader("*");

        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(new PathPatternParser());
        source.registerCorsConfiguration("/**", config);

        return new CorsWebFilter(source);
    }
}

package com.itnxd.commonutils;

import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jws;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.springframework.util.StringUtils;

import javax.servlet.http.HttpServletRequest;
import java.util.Date;

/**
 * @author helen
 * @since 2019/10/16
 */
public class JwtUtils {

    public static final long EXPIRE = 1000 * 60 * 60 * 24;
    public static final String APP_SECRET = "ukc8BDbRigUDaY6pZFfWus2jZWLPHO";

    public static String getJwtToken(String id, String nickname){

        String JwtToken = Jwts.builder()
                .setHeaderParam("typ", "JWT")
                .setHeaderParam("alg", "HS256")
                .setSubject("guli-user")
                .setIssuedAt(new Date())
                .setExpiration(new Date(System.currentTimeMillis() + EXPIRE))
                .claim("id", id)
                .claim("nickname", nickname)
                .signWith(SignatureAlgorithm.HS256, APP_SECRET)
                .compact();

        return JwtToken;
    }

    /**
     * 判断token是否存在与有效
     * @param jwtToken
     * @return
     */
    public static boolean checkToken(String jwtToken) {
        if(StringUtils.isEmpty(jwtToken)) return false;
        try {
            Jwts.parser().setSigningKey(APP_SECRET).parseClaimsJws(jwtToken);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

    /**
     * 判断token是否存在与有效
     * @param request
     * @return
     */
    public static boolean checkToken(HttpServletRequest request) {
        try {
            String jwtToken = request.getHeader("token");
            if(StringUtils.isEmpty(jwtToken)) return false;
            Jwts.parser().setSigningKey(APP_SECRET).parseClaimsJws(jwtToken);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

    /**
     * 根据token获取会员id
     * @param request
     * @return
     */
    public static String getMemberIdByJwtToken(HttpServletRequest request) {
        String jwtToken = request.getHeader("token");
        if(StringUtils.isEmpty(jwtToken)) return "";
        Jws<Claims> claimsJws = Jwts.parser().setSigningKey(APP_SECRET).parseClaimsJws(jwtToken);
        Claims claims = claimsJws.getBody();
        return (String)claims.get("id");
    }
}

package com.itnxd.commonutils;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;


public final class MD5 {

    public static String encrypt(String strSrc) {
        try {
            char hexChars[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8',
                    '9', 'a', 'b', 'c', 'd', 'e', 'f' };
            byte[] bytes = strSrc.getBytes();
            MessageDigest md = MessageDigest.getInstance("MD5");
            md.update(bytes);
            bytes = md.digest();
            int j = bytes.length;
            char[] chars = new char[j * 2];
            int k = 0;
            for (int i = 0; i < bytes.length; i++) {
                byte b = bytes[i];
                chars[k++] = hexChars[b >>> 4 & 0xf];
                chars[k++] = hexChars[b & 0xf];
            }
            return new String(chars);
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
            throw new RuntimeException("MD5加密出错！！+" + e);
        }
    }

    public static void main(String[] args) {
        System.out.println(MD5.encrypt("111111"));
    }

}

package com.itnxd.commonutils;

import io.swagger.annotations.ApiModelProperty;
import lombok.Data;

import java.util.HashMap;
import java.util.Map;

/**
 * 统一返回结果类！
 *
 * @author ITNXD
 * @create 2021-11-02 21:11
 */
@Data
public class R {

    @ApiModelProperty(value = "是否成功")
    private Boolean success;
    @ApiModelProperty(value = "返回码")
    private Integer code;
    @ApiModelProperty(value = "返回消息")
    private String message;
    @ApiModelProperty(value = "返回数据")
    private Map<String, Object> data = new HashMap<String, Object>();

    // 私有构造：不能new
    private R() {
    }

    public static R ok() {
        R r = new R();
        r.setSuccess(true);
        r.setCode(ResultCode.SUCCESS);
        r.setMessage("成功");
        return r;
    }

    public static R error() {
        R r = new R();
        r.setSuccess(false);
        r.setCode(ResultCode.ERROR);
        r.setMessage("失败");
        return r;
    }

    public R success(Boolean success) {
        this.setSuccess(success);
        return this;
    }

    public R message(String message) {
        this.setMessage(message);
        return this;
    }

    public R code(Integer code) {
        this.setCode(code);
        return this;
    }

    public R data(String key, Object value) {
        this.data.put(key, value);
        return this;
    }

    public R data(Map<String, Object> map) {
        this.setData(map);
        return this;
    }
}

package com.itnxd.commonutils;

import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Random;

/**
 * 获取随机数
 * 
 * @author qianyi
 *
 */
public class RandomUtil {

   private static final Random random = new Random();

   private static final DecimalFormat fourdf = new DecimalFormat("0000");

   private static final DecimalFormat sixdf = new DecimalFormat("000000");

   public static String getFourBitRandom() {
      return fourdf.format(random.nextInt(10000));
   }

   public static String getSixBitRandom() {
      return sixdf.format(random.nextInt(1000000));
   }

   /**
    * 给定数组，抽取n个数据
    * @param list
    * @param n
    * @return
    */
   public static ArrayList getRandom(List list, int n) {

      Random random = new Random();

      HashMap<Object, Object> hashMap = new HashMap<Object, Object>();

      // 生成随机数字并存入HashMap
      for (int i = 0; i < list.size(); i++) {

         int number = random.nextInt(100) + 1;

         hashMap.put(number, i);
      }

      // 从HashMap导入数组
      Object[] robjs = hashMap.values().toArray();

      ArrayList r = new ArrayList();

      // 遍历数组并打印数据
      for (int i = 0; i < n; i++) {
         r.add(list.get((int) robjs[i]));
         System.out.print(list.get((int) robjs[i]) + "\t");
      }
      System.out.print("\n");
      return r;
   }
}

package com.itnxd.servicebase;

import com.google.common.base.Predicates;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

/**
 * @author ITNXD
 * @create 2021-11-02 20:34
 */
@Configuration
@EnableSwagger2
public class SwaggerConfig {

    @Bean
    public Docket webApiConfig(){
        return new Docket(DocumentationType.SWAGGER_2)
                .groupName("webApi")
                .apiInfo(webApiInfo())
                .select()
                //.paths(Predicates.not(PathSelectors.regex("/admin/.*")))
                .paths(Predicates.not(PathSelectors.regex("/error.*")))
                .build();
    }

    private ApiInfo webApiInfo(){
        return new ApiInfoBuilder()
                .title("网站-课程中心API文档")
                .description("本文档描述了课程中心微服务接口定义")
                .version("1.0")
                .contact(new Contact("ITNXD", "https://www.itnxd.cn/",
                        "[email protected]"))
                .build();
    }
}

package com.itnxd.eduorder.utils;

import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.*;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContextBuilder;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import javax.net.ssl.SSLContext;
import java.io.IOException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.text.ParseException;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

/**
 * http请求客户端
 * 
 * @author qy
 * 
 */
public class HttpClient {
   private String url;
   private Map<String, String> param;
   private int statusCode;
   private String content;
   private String xmlParam;
   private boolean isHttps;

   public boolean isHttps() {
      return isHttps;
   }

   public void setHttps(boolean isHttps) {
      this.isHttps = isHttps;
   }

   public String getXmlParam() {
      return xmlParam;
   }

   public void setXmlParam(String xmlParam) {
      this.xmlParam = xmlParam;
   }

   public HttpClient(String url, Map<String, String> param) {
      this.url = url;
      this.param = param;
   }

   public HttpClient(String url) {
      this.url = url;
   }

   public void setParameter(Map<String, String> map) {
      param = map;
   }

   public void addParameter(String key, String value) {
      if (param == null)
         param = new HashMap<String, String>();
      param.put(key, value);
   }

   public void post() throws ClientProtocolException, IOException {
      HttpPost http = new HttpPost(url);
      setEntity(http);
      execute(http);
   }

   public void put() throws ClientProtocolException, IOException {
      HttpPut http = new HttpPut(url);
      setEntity(http);
      execute(http);
   }

   public void get() throws ClientProtocolException, IOException {
      if (param != null) {
         StringBuilder url = new StringBuilder(this.url);
         boolean isFirst = true;
         for (String key : param.keySet()) {
            if (isFirst)
               url.append("?");
            else
               url.append("&");
            url.append(key).append("=").append(param.get(key));
         }
         this.url = url.toString();
      }
      HttpGet http = new HttpGet(url);
      execute(http);
   }

   /**
    * set http post,put param
    */
   private void setEntity(HttpEntityEnclosingRequestBase http) {
      if (param != null) {
         List<NameValuePair> nvps = new LinkedList<NameValuePair>();
         for (String key : param.keySet())
            nvps.add(new BasicNameValuePair(key, param.get(key))); // 参数
         http.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8)); // 设置参数
      }
      if (xmlParam != null) {
         http.setEntity(new StringEntity(xmlParam, Consts.UTF_8));
      }
   }

   private void execute(HttpUriRequest http) throws ClientProtocolException,
         IOException {
      CloseableHttpClient httpClient = null;
      try {
         if (isHttps) {
            SSLContext sslContext = new SSLContextBuilder()
                  .loadTrustMaterial(null, new TrustStrategy() {
                     // 信任所有
                     public boolean isTrusted(X509Certificate[] chain,
                           String authType)
                           throws CertificateException {
                        return true;
                     }
                  }).build();
            SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
                  sslContext);
            httpClient = HttpClients.custom().setSSLSocketFactory(sslsf)
                  .build();
         } else {
            httpClient = HttpClients.createDefault();
         }
         CloseableHttpResponse response = httpClient.execute(http);
         try {
            if (response != null) {
               if (response.getStatusLine() != null)
                  statusCode = response.getStatusLine().getStatusCode();
               HttpEntity entity = response.getEntity();
               // 响应内容
               content = EntityUtils.toString(entity, Consts.UTF_8);
            }
         } finally {
            response.close();
         }
      } catch (Exception e) {
         e.printStackTrace();
      } finally {
         httpClient.close();
      }
   }

   public int getStatusCode() {
      return statusCode;
   }

   public String getContent() throws ParseException, IOException {
      return content;
   }

}