update:

1,添加postgresql支持依赖

huigou-xt/pom.xml

@@ -449,6 +449,11 @@
                     <artifactId>mysql-connector-java</artifactId>
                     <version>8.0.17</version>
                 </dependency>
+                <dependency>
+                    <groupId>org.postgresql</groupId>
+                    <artifactId>postgresql</artifactId>
+                    <version>42.2.9</version>
+                </dependency>
             </dependencies>
             <build>
                 <finalName>huigou-xt</finalName>