diff --git a/backend/docs/docs.go b/backend/docs/docs.go
index dd224d3..1ecd82e 100644
--- a/backend/docs/docs.go
+++ b/backend/docs/docs.go
@@ -332,7 +332,7 @@ const docTemplate = `{
 // SwaggerInfo holds exported Swagger Info so clients can modify it
 var SwaggerInfo = &swag.Spec{
 	Version:          "1.0.0",
-	Host:             "localhost:8080",
+	Host:             "localhost:3001",
 	BasePath:         "/",
 	Schemes:          []string{},
 	Title:            "知识图谱 API",
diff --git a/backend/docs/swagger.json b/backend/docs/swagger.json
index 6acd2e7..ac93659 100644
--- a/backend/docs/swagger.json
+++ b/backend/docs/swagger.json
@@ -1,324 +1,314 @@
 {
-    "swagger": "2.0",
-    "info": {
-        "description": "知识图谱后端服务，提供图数据查询、节点搜索等功能",
-        "title": "知识图谱 API",
-        "contact": {},
-        "version": "1.0.0"
-    },
-    "host": "localhost:8080",
-    "basePath": "/",
-    "paths": {
-        "/api/graph": {
-            "get": {
-                "description": "获取知识图谱的全部节点和边数据",
-                "produces": [
-                    "application/json"
-                ],
-                "summary": "获取图数据",
-                "responses": {
-                    "200": {
-                        "description": "成功",
-                        "schema": {
-                            "$ref": "#/definitions/models.GraphData"
-                        }
-                    },
-                    "500": {
-                        "description": "内部错误",
-                        "schema": {
-                            "$ref": "#/definitions/models.ErrorResponse"
-                        }
-                    }
-                }
+  "swagger": "2.0",
+  "info": {
+    "description": "知识图谱后端服务，提供图数据查询、节点搜索等功能",
+    "title": "知识图谱 API",
+    "contact": {},
+    "version": "1.0.0"
+  },
+  "host": "localhost:3001",
+  "basePath": "/",
+  "paths": {
+    "/api/graph": {
+      "get": {
+        "description": "获取知识图谱的全部节点和边数据",
+        "produces": ["application/json"],
+        "summary": "获取图数据",
+        "responses": {
+          "200": {
+            "description": "成功",
+            "schema": {
+              "$ref": "#/definitions/models.GraphData"
             }
-        },
-        "/api/graph/stats": {
-            "get": {
-                "description": "获取知识图谱的节点数、边数等统计信息",
-                "produces": [
-                    "application/json"
-                ],
-                "summary": "获取图统计信息",
-                "responses": {
-                    "200": {
-                        "description": "成功",
-                        "schema": {
-                            "type": "object",
-                            "additionalProperties": true
-                        }
-                    },
-                    "500": {
-                        "description": "内部错误",
-                        "schema": {
-                            "$ref": "#/definitions/models.ErrorResponse"
-                        }
-                    }
-                }
-            }
-        },
-        "/api/nodes/{id}": {
-            "get": {
-                "description": "根据节点 ID 获取知识图谱中的节点详细信息",
-                "produces": [
-                    "application/json"
-                ],
-                "summary": "获取节点详情",
-                "parameters": [
-                    {
-                        "type": "string",
-                        "description": "节点 ID",
-                        "name": "id",
-                        "in": "path",
-                        "required": true
-                    }
-                ],
-                "responses": {
-                    "200": {
-                        "description": "成功",
-                        "schema": {
-                            "$ref": "#/definitions/models.NodeResponse"
-                        }
-                    },
-                    "400": {
-                        "description": "请求错误",
-                        "schema": {
-                            "$ref": "#/definitions/models.ErrorResponse"
-                        }
-                    },
-                    "404": {
-                        "description": "节点未找到",
-                        "schema": {
-                            "$ref": "#/definitions/models.ErrorResponse"
-                        }
-                    },
-                    "500": {
-                        "description": "内部错误",
-                        "schema": {
-                            "$ref": "#/definitions/models.ErrorResponse"
-                        }
-                    }
-                }
-            }
-        },
-        "/api/nodes/{id}/neighbors": {
-            "get": {
-                "description": "根据节点 ID 获取其所有邻居节点及关联边",
-                "produces": [
-                    "application/json"
-                ],
-                "summary": "获取节点邻居",
-                "parameters": [
-                    {
-                        "type": "string",
-                        "description": "节点 ID",
-                        "name": "id",
-                        "in": "path",
-                        "required": true
-                    }
-                ],
-                "responses": {
-                    "200": {
-                        "description": "成功",
-                        "schema": {
-                            "$ref": "#/definitions/models.NeighborResponse"
-                        }
-                    },
-                    "400": {
-                        "description": "请求错误",
-                        "schema": {
-                            "$ref": "#/definitions/models.ErrorResponse"
-                        }
-                    },
-                    "404": {
-                        "description": "节点未找到",
-                        "schema": {
-                            "$ref": "#/definitions/models.ErrorResponse"
-                        }
-                    },
-                    "500": {
-                        "description": "内部错误",
-                        "schema": {
-                            "$ref": "#/definitions/models.ErrorResponse"
-                        }
-                    }
-                }
-            }
-        },
-        "/api/search": {
-            "get": {
-                "description": "根据关键词搜索知识图谱中的节点",
-                "produces": [
-                    "application/json"
-                ],
-                "summary": "搜索节点",
-                "parameters": [
-                    {
-                        "type": "string",
-                        "description": "搜索关键词",
-                        "name": "q",
-                        "in": "query",
-                        "required": true
-                    }
-                ],
-                "responses": {
-                    "200": {
-                        "description": "成功",
-                        "schema": {
-                            "$ref": "#/definitions/models.SearchResponse"
-                        }
-                    },
-                    "400": {
-                        "description": "请求错误",
-                        "schema": {
-                            "$ref": "#/definitions/models.ErrorResponse"
-                        }
-                    },
-                    "500": {
-                        "description": "内部错误",
-                        "schema": {
-                            "$ref": "#/definitions/models.ErrorResponse"
-                        }
-                    }
-                }
+          },
+          "500": {
+            "description": "内部错误",
+            "schema": {
+              "$ref": "#/definitions/models.ErrorResponse"
             }
+          }
         }
+      }
     },
-    "definitions": {
-        "models.Edge": {
-            "type": "object",
-            "properties": {
-                "id": {
-                    "type": "string"
-                },
-                "label": {
-                    "type": "string"
-                },
-                "properties": {
-                    "type": "object",
-                    "additionalProperties": true
-                },
-                "source": {
-                    "type": "string"
-                },
-                "style": {
-                    "type": "object",
-                    "additionalProperties": true
-                },
-                "target": {
-                    "type": "string"
-                },
-                "type": {
-                    "type": "string"
-                }
+    "/api/graph/stats": {
+      "get": {
+        "description": "获取知识图谱的节点数、边数等统计信息",
+        "produces": ["application/json"],
+        "summary": "获取图统计信息",
+        "responses": {
+          "200": {
+            "description": "成功",
+            "schema": {
+              "type": "object",
+              "additionalProperties": true
             }
-        },
-        "models.ErrorResponse": {
-            "type": "object",
-            "properties": {
-                "error": {
-                    "type": "string"
-                },
-                "message": {
-                    "type": "string"
-                }
-            }
-        },
-        "models.GraphData": {
-            "type": "object",
-            "properties": {
-                "edges": {
-                    "type": "array",
-                    "items": {
-                        "$ref": "#/definitions/models.Edge"
-                    }
-                },
-                "nodes": {
-                    "type": "array",
-                    "items": {
-                        "$ref": "#/definitions/models.Node"
-                    }
-                }
-            }
-        },
-        "models.NeighborResponse": {
-            "type": "object",
-            "properties": {
-                "edges": {
-                    "type": "array",
-                    "items": {
-                        "$ref": "#/definitions/models.Edge"
-                    }
-                },
-                "nodes": {
-                    "type": "array",
-                    "items": {
-                        "$ref": "#/definitions/models.Node"
-                    }
-                }
-            }
-        },
-        "models.Node": {
-            "type": "object",
-            "properties": {
-                "id": {
-                    "type": "string"
-                },
-                "label": {
-                    "type": "string"
-                },
-                "properties": {
-                    "type": "object",
-                    "additionalProperties": true
-                },
-                "style": {
-                    "type": "object",
-                    "additionalProperties": true
-                },
-                "type": {
-                    "type": "string"
-                },
-                "x": {
-                    "type": "number"
-                },
-                "y": {
-                    "type": "number"
-                }
-            }
-        },
-        "models.NodeResponse": {
-            "type": "object",
-            "properties": {
-                "id": {
-                    "type": "string",
-                    "example": "1"
-                },
-                "label": {
-                    "type": "string",
-                    "example": "人工智能"
-                },
-                "properties": {
-                    "type": "object",
-                    "additionalProperties": true
-                },
-                "type": {
-                    "type": "string",
-                    "example": "概念"
-                }
-            }
-        },
-        "models.SearchResponse": {
-            "type": "object",
-            "properties": {
-                "count": {
-                    "type": "integer"
-                },
-                "results": {
-                    "type": "array",
-                    "items": {
-                        "$ref": "#/definitions/models.Node"
-                    }
-                }
+          },
+          "500": {
+            "description": "内部错误",
+            "schema": {
+              "$ref": "#/definitions/models.ErrorResponse"
             }
+          }
         }
+      }
+    },
+    "/api/nodes/{id}": {
+      "get": {
+        "description": "根据节点 ID 获取知识图谱中的节点详细信息",
+        "produces": ["application/json"],
+        "summary": "获取节点详情",
+        "parameters": [
+          {
+            "type": "string",
+            "description": "节点 ID",
+            "name": "id",
+            "in": "path",
+            "required": true
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "成功",
+            "schema": {
+              "$ref": "#/definitions/models.NodeResponse"
+            }
+          },
+          "400": {
+            "description": "请求错误",
+            "schema": {
+              "$ref": "#/definitions/models.ErrorResponse"
+            }
+          },
+          "404": {
+            "description": "节点未找到",
+            "schema": {
+              "$ref": "#/definitions/models.ErrorResponse"
+            }
+          },
+          "500": {
+            "description": "内部错误",
+            "schema": {
+              "$ref": "#/definitions/models.ErrorResponse"
+            }
+          }
+        }
+      }
+    },
+    "/api/nodes/{id}/neighbors": {
+      "get": {
+        "description": "根据节点 ID 获取其所有邻居节点及关联边",
+        "produces": ["application/json"],
+        "summary": "获取节点邻居",
+        "parameters": [
+          {
+            "type": "string",
+            "description": "节点 ID",
+            "name": "id",
+            "in": "path",
+            "required": true
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "成功",
+            "schema": {
+              "$ref": "#/definitions/models.NeighborResponse"
+            }
+          },
+          "400": {
+            "description": "请求错误",
+            "schema": {
+              "$ref": "#/definitions/models.ErrorResponse"
+            }
+          },
+          "404": {
+            "description": "节点未找到",
+            "schema": {
+              "$ref": "#/definitions/models.ErrorResponse"
+            }
+          },
+          "500": {
+            "description": "内部错误",
+            "schema": {
+              "$ref": "#/definitions/models.ErrorResponse"
+            }
+          }
+        }
+      }
+    },
+    "/api/search": {
+      "get": {
+        "description": "根据关键词搜索知识图谱中的节点",
+        "produces": ["application/json"],
+        "summary": "搜索节点",
+        "parameters": [
+          {
+            "type": "string",
+            "description": "搜索关键词",
+            "name": "q",
+            "in": "query",
+            "required": true
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "成功",
+            "schema": {
+              "$ref": "#/definitions/models.SearchResponse"
+            }
+          },
+          "400": {
+            "description": "请求错误",
+            "schema": {
+              "$ref": "#/definitions/models.ErrorResponse"
+            }
+          },
+          "500": {
+            "description": "内部错误",
+            "schema": {
+              "$ref": "#/definitions/models.ErrorResponse"
+            }
+          }
+        }
+      }
     }
-}
\ No newline at end of file
+  },
+  "definitions": {
+    "models.Edge": {
+      "type": "object",
+      "properties": {
+        "id": {
+          "type": "string"
+        },
+        "label": {
+          "type": "string"
+        },
+        "properties": {
+          "type": "object",
+          "additionalProperties": true
+        },
+        "source": {
+          "type": "string"
+        },
+        "style": {
+          "type": "object",
+          "additionalProperties": true
+        },
+        "target": {
+          "type": "string"
+        },
+        "type": {
+          "type": "string"
+        }
+      }
+    },
+    "models.ErrorResponse": {
+      "type": "object",
+      "properties": {
+        "error": {
+          "type": "string"
+        },
+        "message": {
+          "type": "string"
+        }
+      }
+    },
+    "models.GraphData": {
+      "type": "object",
+      "properties": {
+        "edges": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/models.Edge"
+          }
+        },
+        "nodes": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/models.Node"
+          }
+        }
+      }
+    },
+    "models.NeighborResponse": {
+      "type": "object",
+      "properties": {
+        "edges": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/models.Edge"
+          }
+        },
+        "nodes": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/models.Node"
+          }
+        }
+      }
+    },
+    "models.Node": {
+      "type": "object",
+      "properties": {
+        "id": {
+          "type": "string"
+        },
+        "label": {
+          "type": "string"
+        },
+        "properties": {
+          "type": "object",
+          "additionalProperties": true
+        },
+        "style": {
+          "type": "object",
+          "additionalProperties": true
+        },
+        "type": {
+          "type": "string"
+        },
+        "x": {
+          "type": "number"
+        },
+        "y": {
+          "type": "number"
+        }
+      }
+    },
+    "models.NodeResponse": {
+      "type": "object",
+      "properties": {
+        "id": {
+          "type": "string",
+          "example": "1"
+        },
+        "label": {
+          "type": "string",
+          "example": "人工智能"
+        },
+        "properties": {
+          "type": "object",
+          "additionalProperties": true
+        },
+        "type": {
+          "type": "string",
+          "example": "概念"
+        }
+      }
+    },
+    "models.SearchResponse": {
+      "type": "object",
+      "properties": {
+        "count": {
+          "type": "integer"
+        },
+        "results": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/models.Node"
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/backend/docs/swagger.yaml b/backend/docs/swagger.yaml
index 1012c9b..6879bb1 100644
--- a/backend/docs/swagger.yaml
+++ b/backend/docs/swagger.yaml
@@ -30,22 +30,22 @@ definitions:
     properties:
       edges:
         items:
-          $ref: '#/definitions/models.Edge'
+          $ref: "#/definitions/models.Edge"
         type: array
       nodes:
         items:
-          $ref: '#/definitions/models.Node'
+          $ref: "#/definitions/models.Node"
         type: array
     type: object
   models.NeighborResponse:
     properties:
       edges:
         items:
-          $ref: '#/definitions/models.Edge'
+          $ref: "#/definitions/models.Edge"
         type: array
       nodes:
         items:
-          $ref: '#/definitions/models.Node'
+          $ref: "#/definitions/models.Node"
         type: array
     type: object
   models.Node:
@@ -88,10 +88,10 @@ definitions:
         type: integer
       results:
         items:
-          $ref: '#/definitions/models.Node'
+          $ref: "#/definitions/models.Node"
         type: array
     type: object
-host: localhost:8080
+host: localhost:3001
 info:
   contact: {}
   description: 知识图谱后端服务，提供图数据查询、节点搜索等功能
@@ -102,22 +102,22 @@ paths:
     get:
       description: 获取知识图谱的全部节点和边数据
       produces:
-      - application/json
+        - application/json
       responses:
         "200":
           description: 成功
           schema:
-            $ref: '#/definitions/models.GraphData'
+            $ref: "#/definitions/models.GraphData"
         "500":
           description: 内部错误
           schema:
-            $ref: '#/definitions/models.ErrorResponse'
+            $ref: "#/definitions/models.ErrorResponse"
       summary: 获取图数据
   /api/graph/stats:
     get:
       description: 获取知识图谱的节点数、边数等统计信息
       produces:
-      - application/json
+        - application/json
       responses:
         "200":
           description: 成功
@@ -127,89 +127,89 @@ paths:
         "500":
           description: 内部错误
           schema:
-            $ref: '#/definitions/models.ErrorResponse'
+            $ref: "#/definitions/models.ErrorResponse"
       summary: 获取图统计信息
   /api/nodes/{id}:
     get:
       description: 根据节点 ID 获取知识图谱中的节点详细信息
       parameters:
-      - description: 节点 ID
-        in: path
-        name: id
-        required: true
-        type: string
+        - description: 节点 ID
+          in: path
+          name: id
+          required: true
+          type: string
       produces:
-      - application/json
+        - application/json
       responses:
         "200":
           description: 成功
           schema:
-            $ref: '#/definitions/models.NodeResponse'
+            $ref: "#/definitions/models.NodeResponse"
         "400":
           description: 请求错误
           schema:
-            $ref: '#/definitions/models.ErrorResponse'
+            $ref: "#/definitions/models.ErrorResponse"
         "404":
           description: 节点未找到
           schema:
-            $ref: '#/definitions/models.ErrorResponse'
+            $ref: "#/definitions/models.ErrorResponse"
         "500":
           description: 内部错误
           schema:
-            $ref: '#/definitions/models.ErrorResponse'
+            $ref: "#/definitions/models.ErrorResponse"
       summary: 获取节点详情
   /api/nodes/{id}/neighbors:
     get:
       description: 根据节点 ID 获取其所有邻居节点及关联边
       parameters:
-      - description: 节点 ID
-        in: path
-        name: id
-        required: true
-        type: string
+        - description: 节点 ID
+          in: path
+          name: id
+          required: true
+          type: string
       produces:
-      - application/json
+        - application/json
       responses:
         "200":
           description: 成功
           schema:
-            $ref: '#/definitions/models.NeighborResponse'
+            $ref: "#/definitions/models.NeighborResponse"
         "400":
           description: 请求错误
           schema:
-            $ref: '#/definitions/models.ErrorResponse'
+            $ref: "#/definitions/models.ErrorResponse"
         "404":
           description: 节点未找到
           schema:
-            $ref: '#/definitions/models.ErrorResponse'
+            $ref: "#/definitions/models.ErrorResponse"
         "500":
           description: 内部错误
           schema:
-            $ref: '#/definitions/models.ErrorResponse'
+            $ref: "#/definitions/models.ErrorResponse"
       summary: 获取节点邻居
   /api/search:
     get:
       description: 根据关键词搜索知识图谱中的节点
       parameters:
-      - description: 搜索关键词
-        in: query
-        name: q
-        required: true
-        type: string
+        - description: 搜索关键词
+          in: query
+          name: q
+          required: true
+          type: string
       produces:
-      - application/json
+        - application/json
       responses:
         "200":
           description: 成功
           schema:
-            $ref: '#/definitions/models.SearchResponse'
+            $ref: "#/definitions/models.SearchResponse"
         "400":
           description: 请求错误
           schema:
-            $ref: '#/definitions/models.ErrorResponse'
+            $ref: "#/definitions/models.ErrorResponse"
         "500":
           description: 内部错误
           schema:
-            $ref: '#/definitions/models.ErrorResponse'
+            $ref: "#/definitions/models.ErrorResponse"
       summary: 搜索节点
 swagger: "2.0"
diff --git a/backend/main.go b/backend/main.go
index 029e696..6b58861 100644
--- a/backend/main.go
+++ b/backend/main.go
@@ -20,7 +20,7 @@ import (
 // @title 知识图谱 API
 // @version 1.0.0
 // @description 知识图谱后端服务，提供图数据查询、节点搜索等功能
-// @host localhost:8080
+// @host localhost:3001
 // @BasePath /
 func main() {
 	cfg, err := config.Load()