Initial commit

common/common-util/pom.xml

@@ -13,7 +13,7 @@
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
-            <scope>provided </scope>
+<!--            <scope>provided</scope>-->
         </dependency>
         <dependency>
             <groupId>io.jsonwebtoken</groupId>
@@ -27,5 +27,11 @@
             <groupId>com.alibaba</groupId>
             <artifactId>fastjson</artifactId>
         </dependency>
+        <!--JWT-->
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt</artifactId>
+        </dependency>
+
     </dependencies>
 </project>

common/common-util/src/main/java/com/atguigu/common/jwt/JwtHelper.java

@@ -0,0 +1,102 @@
+package com.atguigu.common.jwt;
+
+import io.jsonwebtoken.*;
+import org.springframework.util.StringUtils;
+
+import java.util.Date;
+
+/**
+ * ClassName: JitHelper
+ * Package: com.atguigu.common.jwt
+ * JWT工具类
+ *
+ * @author yovinchen
+ * @Create 2023/6/10 16:12
+ */
+public class JwtHelper {
+
+    private static final long tokenExpiration = 365L * 24 * 60 * 60 * 1000;
+    private static final String tokenSignKey = "123456";
+
+    /**
+     * 根据用户 id 和用户名称， 生成token的字符串
+     *
+     * @param userId
+     * @param username
+     * @return
+     */
+    public static String createToken(Long userId, String username) {
+        String token = Jwts.builder()
+                //分类
+                .setSubject("AUTH-USER")
+
+                //设置Token有效时长
+                .setExpiration(new Date(System.currentTimeMillis() + tokenExpiration))
+
+                //设置主体部分
+                .claim("userId", userId)
+                .claim("username", username)
+
+                //签名部分
+                .signWith(SignatureAlgorithm.HS512, tokenSignKey)
+                .compressWith(CompressionCodecs.GZIP)
+                .compact();
+        return token;
+    }
+
+    /**
+     * 从生成的Token中获取id
+     *
+     * @param token
+     * @return
+     */
+    public static Long getUserId(String token) {
+        try {
+            if (StringUtils.isEmpty(token)) return null;
+
+            Jws<Claims> claimsJws = Jwts.parser().setSigningKey(tokenSignKey).parseClaimsJws(token);
+            Claims claims = claimsJws.getBody();
+            Integer userId = (Integer) claims.get("userId");
+            return userId.longValue();
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    /**
+     * 从Token中获取用户名称
+     *
+     * @param token
+     * @return
+     */
+    public static String getUsername(String token) {
+        try {
+            if (StringUtils.isEmpty(token)) return "";
+
+            Jws<Claims> claimsJws = Jwts.parser().setSigningKey(tokenSignKey).parseClaimsJws(token);
+            Claims claims = claimsJws.getBody();
+            return (String) claims.get("username");
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    /**
+     * 测试
+     *
+     * @param args
+     */
+    public static void main(String[] args) {
+        String token = JwtHelper.createToken(1L, "admin");
+        System.out.println(token);
+        String username = JwtHelper.getUsername(token);
+        Long userId = JwtHelper.getUserId(token);
+
+        System.out.println("username = " + username);
+        System.out.println("userId = " + userId);
+    }
+
+}
+

common/common-util/src/main/java/com/atguigu/common/result/ResultCodeEnum.java

@@ -18,7 +18,7 @@ public enum ResultCodeEnum {
     FAIL(201, "失败"),
     SERVICE_ERROR(2012, "服务异常"),
     DATA_ERROR(204, "数据异常"),
-
+    LOGIN_ERROR(205, "认证失败"),
     LOGIN_AUTH(208, "未登陆"),
     PERMISSION(209, "没有权限");
 

common/common-util/src/main/java/com/atguigu/common/utils/MD5.java

@@ -0,0 +1,33 @@
+package com.atguigu.common.utils;
+
+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 (byte b : bytes) {
+                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"));
+    }
+}

common/common-util/src/main/java/com/atguigu/common/utils/ResponseUtil.java

@@ -0,0 +1,30 @@
+package com.atguigu.common.utils;
+
+import com.atguigu.common.result.Result;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+/**
+ * ClassName: ResponseUtil
+ * Package: com.atguigu.common.utils
+ *
+ * @author yovinchen
+ * @Create 2023/6/10 23:42
+ */
+public class ResponseUtil {
+
+    public static void out(HttpServletResponse response, Result r) {
+        ObjectMapper mapper = new ObjectMapper();
+        response.setStatus(HttpStatus.OK.value());
+        response.setContentType(MediaType.APPLICATION_JSON_UTF8_VALUE);
+        try {
+            mapper.writeValue(response.getWriter(), r);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}