修复文件模版占位符错误问题

2026-09-15 16:43:45 +08:00
parent 43a498162e
commit 20ea1bc70c
2 changed files with 72 additions and 0 deletions
@@ -35,6 +35,7 @@ public static class DocxTemplateProcessor
                foreach (var paragraph in document.Descendants(WordNamespace + "p"))
                {
                    var text = string.Concat(paragraph.Descendants(WordNamespace + "t").Select(node => node.Value));
+                    ValidatePlaceholderSyntax(text);
                    foreach (global::System.Text.RegularExpressions.Match match in PlaceholderRegex.Matches(text))
                        codes.Add(match.Groups["code"].Value.Trim());
                }
@@ -52,6 +53,72 @@ public static class DocxTemplateProcessor
        }
    }

+    /// <summary>
+    /// 占位符提取正则只会匹配正确格式，因此必须先主动检查错误格式，
+    /// 避免缺少花括号或变量编码写错时被静默忽略并继续创建版本。
+    /// </summary>
+    private static void ValidatePlaceholderSyntax(string text)
+    {
+        if (string.IsNullOrEmpty(text))
+            return;
+
+        if (text.Contains("｛｛", StringComparison.Ordinal)
+            || text.Contains("｝｝", StringComparison.Ordinal))
+        {
+            throw Oops.Bah(
+                "DOCX 占位符格式错误：检测到中文全角花括号。请使用英文半角双花括号，例如 {{employee.EmployeeName}}。");
+        }
+
+        if (text.Contains("{{{", StringComparison.Ordinal)
+            || text.Contains("}}}", StringComparison.Ordinal))
+        {
+            throw Oops.Bah(
+                "DOCX 占位符格式错误：检测到多余的花括号。占位符必须使用成对的英文半角双花括号，例如 {{employee.EmployeeName}}。");
+        }
+
+        var searchStart = 0;
+        while (searchStart < text.Length)
+        {
+            var openIndex = text.IndexOf("{{", searchStart, StringComparison.Ordinal);
+            var closeIndex = text.IndexOf("}}", searchStart, StringComparison.Ordinal);
+
+            if (closeIndex >= 0 && (openIndex < 0 || closeIndex < openIndex))
+            {
+                throw Oops.Bah(
+                    $"DOCX 占位符格式错误：{BuildPlaceholderPreview(text, closeIndex)} 缺少对应的起始符“{{{{”。正确格式示例：{{{{employee.EmployeeName}}}}。");
+            }
+
+            if (openIndex < 0)
+                return;
+
+            closeIndex = text.IndexOf("}}", openIndex + 2, StringComparison.Ordinal);
+            if (closeIndex < 0)
+            {
+                throw Oops.Bah(
+                    $"DOCX 占位符格式错误：{BuildPlaceholderPreview(text, openIndex)} 缺少结束符“}}}}”。正确格式示例：{{{{employee.EmployeeName}}}}。");
+            }
+
+            var placeholder = text.Substring(openIndex, closeIndex + 2 - openIndex);
+            var match = PlaceholderRegex.Match(placeholder);
+            if (!match.Success || match.Length != placeholder.Length)
+            {
+                throw Oops.Bah(
+                    $"DOCX 占位符格式错误：“{placeholder}”。变量编码只能包含英文字母、数字、下划线、点和短横线，并且必须使用成对的英文半角双花括号。");
+            }
+
+            searchStart = closeIndex + 2;
+        }
+    }
+
+    private static string BuildPlaceholderPreview(string text, int markerIndex)
+    {
+        const int maxLength = 60;
+        var preview = text[markerIndex..].Trim();
+        if (preview.Length > maxLength)
+            preview = preview[..maxLength] + "…";
+        return $"“{preview}”";
+    }
+
    /// <summary>
    /// 使用任务变量快照替换 DOCX 中的占位符，支持占位符跨多个 Word 文本节点。
    /// </summary>
@@ -37,6 +37,11 @@ public class OnboardingContractTemplateController
        if (!string.Equals(suffix, ".docx", StringComparison.OrdinalIgnoreCase))
            throw Oops.Bah("合同模板仅支持 DOCX 文件");

+        await using var input = file.OpenReadStream();
+        using var bytes = new MemoryStream();
+        await input.CopyToAsync(bytes);
+        DocxTemplateProcessor.ExtractVariableCodes(bytes.ToArray());
+
        return await _fileService.UploadFile(SysDictConst.FILE_ENGINE_ALIYUN_OSS, file);
    }