add backend

backend/src/main/java/com/yoyuzh/PortalBackendApplication.java

@@ -0,0 +1,21 @@
+package com.yoyuzh;
+
+import com.yoyuzh.config.CquApiProperties;
+import com.yoyuzh.config.FileStorageProperties;
+import com.yoyuzh.config.JwtProperties;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+
+@SpringBootApplication
+@EnableConfigurationProperties({
+        JwtProperties.class,
+        FileStorageProperties.class,
+        CquApiProperties.class
+})
+public class PortalBackendApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(PortalBackendApplication.class, args);
+    }
+}