diff --git a/src/api/login.js b/src/api/login.js
index e784879..fbf463e 100644
--- a/src/api/login.js
+++ b/src/api/login.js
@@ -88,4 +88,12 @@ export function postCommonCheckVersion(data) {
     method: 'post',
     data: data
   })
+}
+// 更新签名
+export function postUpdateOpsSignatureUpdate(data) {
+  return request({
+    url: '/users/ops/signature/update',
+    method: 'post',
+    data
+  })
 }
\ No newline at end of file
diff --git a/src/layout/components/ESignatureDialog.vue b/src/layout/components/ESignatureDialog.vue
index b66d3e6..4736417 100644
--- a/src/layout/components/ESignatureDialog.vue
+++ b/src/layout/components/ESignatureDialog.vue
@@ -6,7 +6,7 @@
     :show-close="true"
     @close="handleClose"
     @opened="initCanvas"
-    qappend-to-body
+    append-to-body
   >
     <el-form label-width="80px">
       <el-form-item label="签名区域">
@@ -40,13 +40,16 @@
       ref="fileInput"
       type="file"
       accept="image/*"
-      class="file-input"
-      @change="handleFileChange"
+      style="display: none"
+      @change="handleFileSelect"
     />
   </el-dialog>
 </template>
 
 <script>
+import { postUpdateOpsSignatureUpdate } from "@/api/login";
+import { uploadFile } from "@/utils/requestMinio";
+import { setLoginInfo } from "@/utils/auth";
 export default {
   name: "ESignatureDialog",
   data() {
@@ -220,45 +223,100 @@ export default {
       this.$refs.fileInput.click();
     },
 
-    handleFileChange(e) {
-      const file = e.target.files[0];
-      if (file && this.ctx) {
+    // 文件选择处理
+    async handleFileSelect(event) {
+      const file = event.target.files[0];
+      if (!file) return;
+      try {
+        await this.loadImageToCanvas(file);
+      } catch (error) {
+        console.error("图片加载失败:", error);
+        this.$modal.msgError("图片加载失败: " + error.message);
+      } finally {
+        // 清空文件输入
+        event.target.value = "";
+      }
+    },
+    // 将图片加载到画布上
+    async loadImageToCanvas(file) {
+      return new Promise((resolve, reject) => {
         const reader = new FileReader();
-        reader.onload = (event) => {
+        reader.onload = (e) => {
           const img = new Image();
           img.onload = () => {
             const canvas = this.$refs.signatureCanvas;
-
+            const ctx = this.ctx;
+            
             // 清除画布
-            this.ctx.clearRect(0, 0, canvas.width, canvas.height);
-
-            // 计算缩放比例，保持图片比例
-            const scale = Math.min(
-              canvas.width / img.width,
-              canvas.height / img.height,
-              1
-            );
+            ctx.clearRect(0, 0, canvas.width, canvas.height);
+            
+            // 计算图片缩放比例，保持宽高比
+            const scale = Math.min(canvas.width / img.width, canvas.height / img.height);
             const x = (canvas.width - img.width * scale) / 2;
             const y = (canvas.height - img.height * scale) / 2;
-
-            this.ctx.drawImage(
-              img,
-              x,
-              y,
-              img.width * scale,
-              img.height * scale
-            );
+            
+            // 绘制图片到画布中央
+            ctx.drawImage(img, x, y, img.width * scale, img.height * scale);
+            
+            // 保存状态
             this.saveState();
+            resolve();
           };
-          img.src = event.target.result;
+          img.onerror = () => reject(new Error("图片加载失败"));
+          img.src = e.target.result;
         };
+        reader.onerror = () => reject(new Error("文件读取失败"));
         reader.readAsDataURL(file);
-      }
-      // 清空 input 值，允许重复选择同一文件
-      e.target.value = "";
+      });
     },
+    // 上传头像到 MinIO
+    async uploadAvatar(file) {
+      try {
+        // 确保 MinIO 配置已加载
+        await this.ensureMinioInitialized();
+        const config = this.$store.getters.config;
+        const bucket = config.MINIO_BUCKET_AVATAR || "remote-avatar-test";
+        const timestamp = Date.now();
+        const ext = file.name.split(".").pop() || "png";
+        const fileName = `${timestamp}.${ext}`;
+        const objectName = `head_portrait/${fileName}`;
+
+        console.log(
+          `Uploading avatar to bucket: ${bucket}, object: ${objectName}`
+        );
+
+        // 使用 MinIO 上传
+        const result = await uploadFile(
+          bucket,
+          objectName,
+          file,
+          {},
+          (percent) => {}
+        );
+        console.log("MinIO 上传成功:", result);
+        let avatar = config.MINIO_BUCKET_AVATAR + "/" + result.objectName;
+        // 上传成功后调用业务接口更新用户信息
+        await postUpdateOpsSignatureUpdate({
+          // 签名图片地址
+          signature: avatar,
+          // 签名图片的数字摘要值
+          sign_hash: avatar,
+        });
+        // 更新头像显示
 
-    submit() {
+      } catch (error) {
+        throw error;
+      }
+    },
+    // 确保 MinIO 客户端已初始化
+    async ensureMinioInitialized() {
+      const config = this.$store.getters.config;
+      if (!config || !config.MINIO_ENDPOINT) {
+        console.log("MinIO config not loaded, fetching...");
+        await this.$store.dispatch("GetNetConfig");
+      }
+    },
+    async submit() {
       const canvas = this.$refs.signatureCanvas;
       if (!canvas || !this.ctx) return;
 
@@ -282,10 +340,85 @@ export default {
         return;
       }
 
-      this.signatureData = canvas.toDataURL("image/png");
-      this.$message.success("签名上传成功");
-      this.$emit("submit", this.signatureData);
-      this.handleClose();
+      try {
+        // 将画布内容转换为blob
+        const blob = await new Promise((resolve) => {
+          canvas.toBlob(resolve, "image/png");
+        });
+
+        // 上传到文件服务器
+        await this.uploadSignatureToServer(blob);
+        
+        this.$message.success("签名上传成功");
+        this.$emit("submit", canvas.toDataURL("image/png"));
+        this.handleClose();
+      } catch (error) {
+        console.error("签名上传失败:", error);
+        this.$message.error("签名上传失败: " + error.message);
+      }
+    },
+    // 上传签名到文件服务器
+    async uploadSignatureToServer(blob) {
+      // 确保 MinIO 配置已加载
+      await this.ensureMinioInitialized();
+      const config = this.$store.getters.config;
+      
+      // 构建文件路径：MINIO_BUCKET_KERNEL/esign/用户名_esign_时间戳.png
+      const bucket = config.MINIO_BUCKET_KERNEL || "remote-kernel-test";
+      const loginInfo = this.$store.state.user.loginInfo;
+      const username = loginInfo?.username || "unknown";
+      const timestamp = Date.now();
+      const objectName = `esign/${username}_esign_${timestamp}.png`;
+
+      console.log(`Uploading signature to bucket: ${bucket}, object: ${objectName}`);
+
+      // 使用 MinIO 上传
+      const result = await uploadFile(
+        bucket,
+        objectName,
+        blob,
+        {},
+        (percent) => {}
+      );
+      console.log("MinIO 上传成功:", result);
+
+      // 构建签名图片地址
+      const signature = `${bucket}/${result.objectName}`;
+
+      // 计算文件哈希值
+      const signHash = await this.calculateFileHash(blob);
+
+      // 调用更新接口
+      await postUpdateOpsSignatureUpdate({
+        signature: signature,
+        sign_hash: signHash,
+      });
+
+      // 更新 loginInfo 中的签名信息
+      this.updateLoginInfoSignature(signature);
+    },
+    // 更新 loginInfo 中的签名信息
+    updateLoginInfoSignature(signature) {
+      const loginInfo = { ...this.$store.state.user.loginInfo };
+      loginInfo.signature = signature;
+      
+      // 更新 Vuex store
+      this.$store.commit('SET_LOGIN_INFO', loginInfo);
+      
+      // 更新本地存储
+      try {
+        setLoginInfo(loginInfo);
+      } catch (e) {
+        console.error("更新本地存储失败:", e);
+      }
+    },
+    // 计算文件 SHA-256 哈希值
+    async calculateFileHash(blob) {
+      const arrayBuffer = await blob.arrayBuffer();
+      const hashBuffer = await crypto.subtle.digest("SHA-256", arrayBuffer);
+      const hashArray = Array.from(new Uint8Array(hashBuffer));
+      const hashHex = hashArray.map((b) => b.toString(16).padStart(2, "0")).join("");
+      return hashHex;
     },
 
     handleClose() {
diff --git a/src/utils/auth.js b/src/utils/auth.js
index 52885b7..a4b6566 100644
--- a/src/utils/auth.js
+++ b/src/utils/auth.js
@@ -5,14 +5,16 @@ const TokenKey = 'utalk-token'
 export function getToken() {
   return Cookies.get(TokenKey)
 }
+// auth.js 修改
 export function getLoginInfo() {
-  return Cookies.get('loginInfo')
+  const info = Cookies.get('loginInfo')
+  return info ? JSON.parse(info) : null  // 添加反序列化
 }
 export function setToken(token) {
-  return Cookies.set(TokenKey, token, { expires: 7 })
+  return Cookies.set(TokenKey, token)
 }
 export function setLoginInfo(loginInfo) {
-  return Cookies.set('loginInfo', loginInfo, { expires: 7 })
+  return Cookies.set('loginInfo', JSON.stringify(loginInfo))  // 添加序列化
 }
 
 export function removeToken() {