Update application.yml to disable resource mapping for improved SPA handling

backend/src/main/java/com/sshmanager/config/SpaForwardConfig.java

@@ -0,0 +1,33 @@
+package com.sshmanager.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.Resource;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+import org.springframework.web.servlet.resource.PathResourceResolver;
+
+import java.io.IOException;
+
+/**
+ * SPA 前端路由回退：未匹配到静态资源时返回 index.html，供 Vue Router history 模式使用。
+ */
+@Configuration
+public class SpaForwardConfig implements WebMvcConfigurer {
+
+    @Override
+    public void addResourceHandlers(ResourceHandlerRegistry registry) {
+        registry.addResourceHandler("/**")
+                .addResourceLocations("classpath:/static/")
+                .resourceChain(true)
+                .addResolver(new PathResourceResolver() {
+                    @Override
+                    protected Resource getResource(String path, Resource location) throws IOException {
+                        Resource resource = location.createRelative(path);
+                        if (resource.exists() && resource.isReadable()) {
+                            return resource;
+                        }
+                        return location.createRelative("index.html");
+                    }
+                });
+    }
+}

backend/src/main/resources/application.yml

@@ -2,6 +2,9 @@ server:
   port: 48080
 
 spring:
+  web:
+    resources:
+      add-mappings: false  # 使用 SpaForwardConfig 统一处理静态与 SPA 回退
   datasource:
     url: jdbc:h2:file:./data/sshmanager;DB_CLOSE_DELAY=-1
     driver-class-name: org.h2.Driver