feat: 报告生成扩展 PPT/Word/Excel 多格式导出

- 新增 ExportReportDOCX 导出 Word 文档（纯标准库）
- 新增 ExportReportPPTX 导出 PPT 演示文稿（纯标准库）
- 新增 ExportReportXLSX 导出 Excel 表格（纯标准库）
- 新增 /api/report/export/{docx,pptx,xlsx} 路由
- 前端增加多格式导出下拉菜单（PDF/Word/PPT/Excel）
- 前端导出函数按格式名提示成功信息
- 零网络依赖，纯 Go 标准库实现

eai_ap_app/backend-go/internal/api/export_common.go

@@ -0,0 +1,31 @@
+package api
+
+import (
+	"archive/zip"
+	"strings"
+)
+
+// writeFile helper: create a file in zip and write content
+func zipWriteFile(zw *zip.Writer, name, content string) error {
+	f, err := zw.Create(name)
+	if err != nil {
+		return err
+	}
+	_, err = f.Write([]byte(content))
+	return err
+}
+
+// escapeXML escapes HTML/XML special characters
+func escapeXML(s string) string {
+	s = strings.ReplaceAll(s, "&", "&")
+	s = strings.ReplaceAll(s, "<", "&lt;")
+	s = strings.ReplaceAll(s, ">", "&gt;")
+	s = strings.ReplaceAll(s, "'", "&apos;")
+	s = strings.ReplaceAll(s, `"`, "&quot;")
+	return s
+}
+
+// timeStr returns a fixed string for pptx sldId
+func timeStr() string {
+	return "20060102T150405"
+}

eai_ap_app/backend-go/internal/api/export_docx.go

@@ -0,0 +1,31 @@
+package api
+
+import (
+	"archive/zip"
+	"bytes"
+	"strings"
+)
+
+func ExportReportDOCX(report reportContent) ([]byte, error) {
+	var buf bytes.Buffer
+	zw := zip.NewWriter(&buf)
+	zipWriteFile(zw, "[Content_Types].xml", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types"><Default Extension="xml" ContentType="application/xml"/><Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/><Override PartName="/word/document.xml" ContentType="application/vnd.openxmlformats-officedocument.wordprocessingml.document.main+xml"/></Types>`)
+	zipWriteFile(zw, "_rels/.rels", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="word/document.xml"/></Relationships>`)
+	var doc strings.Builder
+	doc.WriteString(`<?xml version="1.0" encoding="UTF-8" standalone="yes"?>` + `<w:document xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main"><w:body>`)
+	doc.WriteString(`<w:p><w:pPr><w:pStyle w:val="Title"/></w:pPr><w:r><w:rPr><w:b/><w:sz w:val="48"/></w:rPr><w:t>` + escapeXML(report.Topic) + `</w:t></w:r></w:p>`)
+	doc.WriteString(`<w:p><w:r><w:rPr><w:b/><w:sz w:val="24"/></w:rPr><w:t>摘要</w:t></w:r></w:p>`)
+	doc.WriteString(`<w:p><w:r><w:rPr><w:sz w:val="24"/></w:rPr><w:t>` + escapeXML(report.Summary) + `</w:t></w:r></w:p>`)
+	for _, ch := range report.Chapters {
+		doc.WriteString(`<w:p><w:pPr><w:pStyle w:val="Heading1"/></w:pPr><w:r><w:rPr><w:b/><w:sz w:val="28"/></w:rPr><w:t>` + escapeXML(ch.Title) + `</w:t></w:r></w:p>`)
+		doc.WriteString(`<w:p><w:r><w:rPr><w:sz w:val="22"/></w:rPr><w:t>` + escapeXML(ch.Body) + `</w:t></w:r></w:p>`)
+	}
+	doc.WriteString(`</w:body></w:document>`)
+	zipWriteFile(zw, "word/document.xml", doc.String())
+	zipWriteFile(zw, "word/styles.xml", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><styles xmlns="http://schemas.openxmlformats.org/wordprocessingml/2006/main"><style type="paragraph" styleId="Title"><name val="Title"/><uiPriority uiPriority="9"/><rPr><rStyle val="Title"/><rFonts w:ascii="Arial" w:hAnsi="Arial"/><b/><sz w:val="48"/></rPr></style><style type="paragraph" styleId="Heading1"><name val="Heading 1"/><rPr><rStyle val="Heading1"/><rFonts w:ascii="Arial" w:hAnsi="Arial"/><b/><sz w:val="28"/></rPr></style></styles>`)
+	zipWriteFile(zw, "word/_rels/document.xml.rels", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles" Target="styles.xml"/></Relationships>`)
+	zipWriteFile(zw, "docProps/core.xml", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><cp:coreProperties xmlns:cp="http://schemas.openxmlformats.org/package/2006/metadata/core-properties" xmlns:dc="http://purl.org/dc/elements/1.1/"><dc:title>` + escapeXML(report.Topic) + `</dc:title></cp:coreProperties>`)
+	zipWriteFile(zw, "docProps/app.xml", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Properties xmlns="http://schemas.openxmlformats.org/officeDocument/2006/extended-properties"><Application>Microsoft Word</Application></Properties>`)
+	zw.Close()
+	return buf.Bytes(), nil
+}

eai_ap_app/backend-go/internal/api/export_pptx.go

@@ -0,0 +1,72 @@
+package api
+
+import (
+	"archive/zip"
+	"bytes"
+	"fmt"
+	"strings"
+)
+
+func ExportReportPPTX(report reportContent) ([]byte, error) {
+	var buf bytes.Buffer
+	zw := zip.NewWriter(&buf)
+
+	layoutRefs := make([]string, 0)
+	for i := 0; i < len(report.Chapters)+1; i++ {
+		layoutRefs = append(layoutRefs, "rId"+fmt.Sprint(i+1))
+	}
+	slideRels := strings.Join(layoutRefs, "")
+
+	zipWriteFile(zw, "[Content_Types].xml", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types"><Default Extension="xml" ContentType="application/xml"/><Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/><Override PartName="/ppt/presentation.xml" ContentType="application/vnd.openxmlformats-officedocument.presentationml.presentation.main+xml"/><Override PartName="/ppt/slides/slide1.xml" ContentType="application/vnd.openxmlformats-officedocument.presentationml.slide+xml"/><Override PartName="/ppt/slideLayouts/slideLayout1.xml" ContentType="application/vnd.openxmlformats-officedocument.presentationml.slideLayout+xml"/></Types>`)
+	zipWriteFile(zw, "_rels/.rels", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="ppt/presentation.xml"/></Relationships>`)
+
+	preXML := `<?xml version="1.0" encoding="UTF-8" standalone="yes"?>` +
+		`<p:presentation xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" changedTime="` + timeStr() + `">` +
+		`<p:sldMasterId href="http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideMaster"/>` +
+		`<p:sldIds>` + slideRels + `</p:sldIds></p:presentation>`
+	zipWriteFile(zw, "ppt/presentation.xml", preXML)
+
+	zipWriteFile(zw, "ppt/_rels/presentation.xml.rels", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideMaster" Target="slideMaster/slideMaster1.xml"/><Relationship Id="rId2" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideLayouts" Target="slideLayouts/slideLayout1.xml"/><Relationship Id="rId3" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/theme" Target="theme/theme1.xml"/></Relationships>`)
+
+	titleSlide := buildSlideTitle(report.Topic, report.Summary)
+	zipWriteFile(zw, "ppt/slides/slide1.xml", titleSlide)
+	zipWriteFile(zw, "ppt/slides/_rels/slide1.xml.rels", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideLayout" Target="../slideLayouts/slideLayout1.xml"/></Relationships>`)
+
+	for i, ch := range report.Chapters {
+		slideNum := i + 2
+		slidePath := fmt.Sprintf("ppt/slides/slide%d.xml", slideNum)
+		relnPath := fmt.Sprintf("ppt/slides/_rels/slide%d.xml.rels", slideNum)
+		zipWriteFile(zw, slidePath, buildSlideChapter(ch.Title, ch.Body))
+		zipWriteFile(zw, relnPath, `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideLayout" Target="../slideLayouts/slideLayout1.xml"/></Relationships>`)
+	}
+
+	zipWriteFile(zw, "ppt/slideLayouts/slideLayout1.xml", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><p:sldLayout xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" type="title"><p:cSld><p:spTree><p:sp><p:nvSpPr><p:cNvPr id="1" name="标题"/><p:cNvSpPr/></p:nvSpPr><p:spPr><p:xfrm><p:off x="914400" y="228600"/><p:ext cx="7315200" cy="1219200"/></p:xfrm></p:spPr><p:txBody><a:bodyPr xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main"/><a:style><a:lnSz w="914400" h="914400"/><a:effectLst/><a:spPr/><a:prstGeom prst="rect"/><a:fld/><a:p><a:pPr alignment="ctr"/><a:r><a:rPr lang="zh-CN" sz="4400" dirty="0"/><a:t>标题</a:t></a:r><a:endParaRPr lang="zh-CN" sz="4400" dirty="0"/></a:p></a:txBody></p:sp><p:sp><p:nvSpPr><p:cNvPr id="2" name="内容"/><p:cNvSpPr/></p:nvSpPr><p:spPr><p:xfrm><p:off x="457200" y="1524000"/><p:ext cx="6400800" cy="5334000"/></p:xfrm></p:spPr><p:txBody><a:bodyPr xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" wrap="square" anchor="ctr"/><a:style><a:lnSz w="76200" h="76200"/><a:effectLst/><a:spPr/><a:prstGeom prst="rect"/><a:fld/><a:p><a:pPr><a:indent>-457200"/></a:pPr><a:r><a:rPr lang="zh-CN" sz="2400" dirty="0"/><a:t>内容</a:t></a:r><a:endParaRPr lang="zh-CN" sz="2400" dirty="0"/></a:p></a:txBody></p:sp></p:spTree></p:cSld></p:sldLayout>`)
+
+	zipWriteFile(zw, "ppt/theme/theme1.xml", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><a:theme xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" name="Design Theme"><a:themeElements><a:clrScheme name="Office"><a:dk1><a:sysClr val="windowText" lastClr="000000"/></a:dk1><a:lt1><a:sysClr val="window" lastClr="FFFFFF"/></a:lt1><a:dk2><a:srgbClr val="1F497D"/></a:dk2><a:lt2><a:srgbClr val="E8E8E8"/></a:lt2><a:accent1><a:srgbClr val="4472C4"/></a:accent1><a:accent2><a:srgbClr val="ED7D31"/></a:accent2><a:accent3><a:srgbClr val="A5A5A5"/></a:accent3><a:accent4><a:srgbClr val="FFC000"/></a:accent4><a:accent5><a:srgbClr val="4472C4"/></a:accent5><a:accent6><a:srgbClr val="70AD47"/></a:accent6><a:hlink><a:srgbClr val="0563C1"/></a:hlink><a:folHlink><a:srgbClr val="9563C1"/></a:folHlink></a:clrScheme><a:fontScheme name="Office"><a:majorFont><a:latin fontFamily="Calibri" script="latn"/><a:ea script="hani"/><a:cs fontFamily="Cambria" script="latin"/></a:majorFont><a:minorFont><a:latin fontFamily="Calibri" script="latn"/><a:ea script="hani"/><a:cs fontFamily="Calibri" script="latin"/></a:minorFont></a:fontScheme><a:fmtScheme name="Office"/></a:themeElements></a:theme>`)
+
+	zipWriteFile(zw, "ppt/media/", "")
+	zw.Close()
+	return buf.Bytes(), nil
+}
+
+func buildSlideTitle(title, summary string) string {
+	return `<?xml version="1.0" encoding="UTF-8" standalone="yes"?>` +
+		`<p:slide xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" p:sldId="` + timeStr() + `">` +
+		`<p:cSld><p:spTree>` +
+		`<p:sp><p:nvSpPr><p:cNvPr id="1" name="标题"/><p:cNvSpPr/></p:nvSpPr><p:spPr><p:xfrm><p:off x="914400" y="228600"/><p:ext cx="7315200" cy="1219200"/></p:xfrm></p:spPr>` +
+		`<p:txBody><a:bodyPr xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" anchor="ctr"/><a:style><a:lnSz w="914400" h="914400"/><a:effectLst/><a:spPr/><a:prstGeom prst="rect"/><a:fld/><a:p><a:pPr alignment="ctr"/><a:r><a:rPr lang="zh-CN" sz="4400" dirty="0"/><a:rPr><a:spcBk><a:spcPct val="100000"/></a:spcBk></a:rPr><a:b/><a:t>` + escapeXML(title) + `</a:t></a:r><a:endParaRPr lang="zh-CN" sz="4400" dirty="0"/></a:p></a:txBody></p:sp>` +
+		`<p:sp><p:nvSpPr><p:cNvPr id="2" name="摘要"/><p:cNvSpPr/></p:nvSpPr><p:spPr><p:xfrm><p:off x="457200" y="1524000"/><p:ext cx="6400800" cy="5334000"/></p:xfrm></p:spPr>` +
+		`<p:txBody><a:bodyPr xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" wrap="square" anchor="ctr"/><a:style><a:lnSz w="76200" h="76200"/><a:effectLst/><a:spPr/><a:prstGeom prst="rect"/><a:fld/><a:p><a:pPr><a:indent>-457200"/></a:pPr><a:r><a:rPr lang="zh-CN" sz="2400" dirty="0"/><a:rPr><a:spcBk><a:spcPct val="100000"/></a:spcBk></a:rPr><a:t>` + escapeXML(summary) + `</a:t></a:r><a:endParaRPr lang="zh-CN" sz="2400" dirty="0"/></a:p></a:txBody></p:sp>` +
+		`</p:spTree></p:cSld></p:slide>`
+}
+
+func buildSlideChapter(title, body string) string {
+	return `<?xml version="1.0" encoding="UTF-8" standalone="yes"?>` +
+		`<p:slide xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" p:sldId="` + timeStr() + `">` +
+		`<p:cSld><p:spTree>` +
+		`<p:sp><p:nvSpPr><p:cNvPr id="1" name="标题"/><p:cNvSpPr/></p:nvSpPr><p:spPr><p:xfrm><p:off x="914400" y="228600"/><p:ext cx="7315200" cy="914400"/></p:xfrm></p:spPr>` +
+		`<p:txBody><a:bodyPr xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" anchor="ctr"/><a:style><a:lnSz w="914400" h="914400"/><a:effectLst/><a:spPr/><a:prstGeom prst="rect"/><a:fld/><a:p><a:pPr/><a:r><a:rPr lang="zh-CN" sz="3200" dirty="0"/><a:rPr><a:spcBk><a:spcPct val="100000"/></a:spcBk></a:rPr><a:b/><a:t>` + escapeXML(title) + `</a:t></a:r><a:endParaRPr lang="zh-CN" sz="3200" dirty="0"/></a:p></a:txBody></p:sp>` +
+		`<p:sp><p:nvSpPr><p:cNvPr id="2" name="内容"/><p:cNvSpPr/></p:nvSpPr><p:spPr><p:xfrm><p:off x="457200" y="1219200"/><p:ext cx="6400800" cy="5791200"/></p:xfrm></p:spPr>` +
+		`<p:txBody><a:bodyPr xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" wrap="square" anchor="ctr"/><a:style><a:lnSz w="76200" h="76200"/><a:effectLst/><a:spPr/><a:prstGeom prst="rect"/><a:fld/><a:p><a:pPr><a:indent>-457200"/></a:pPr><a:r><a:rPr lang="zh-CN" sz="2000" dirty="0"/><a:rPr><a:spcBk><a:spcPct val="100000"/></a:spcBk></a:rPr><a:t>` + escapeXML(body) + `</a:t></a:r><a:endParaRPr lang="zh-CN" sz="2000" dirty="0"/></a:p></a:txBody></p:sp>` +
+		`</p:spTree></p:cSld></p:slide>`
+}

eai_ap_app/backend-go/internal/api/export_xlsx.go

@@ -0,0 +1,55 @@
+package api
+
+import (
+	"archive/zip"
+	"bytes"
+	"fmt"
+	"strings"
+)
+
+func ExportReportXLSX(report reportContent) ([]byte, error) {
+	var buf bytes.Buffer
+	zw := zip.NewWriter(&buf)
+	ss := []string{}
+	addSS := func(s string) int {
+		s = strings.TrimSpace(s)
+		if s == "" {
+			return len(ss)
+		}
+		ss = append(ss, s)
+		return len(ss) - 1
+	}
+	addSS(report.Topic)
+	addSS(report.Summary)
+	for _, ch := range report.Chapters {
+		addSS(ch.Title)
+		addSS(ch.Body)
+	}
+	zipWriteFile(zw, "[Content_Types].xml", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types"><Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/><Default Extension="xml" ContentType="application/xml"/><Override PartName="/xl/workbook.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet.main+xml"/><Override PartName="/xl/worksheets/sheet1.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml"/><Override PartName="/xl/sharedStrings.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml"/></Types>`)
+	zipWriteFile(zw, "_rels/.rels", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="xl/workbook.xml"/></Relationships>`)
+	zipWriteFile(zw, "xl/workbook.xml", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><workbook xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"><workbookPr date1904="false"/><bookViews><workbookView xWindow="0" yWindow="0" windowWidth="25600" windowHeight="14400"/></bookViews><sheets><sheet name="报告" sheetId="1" r:id="rId1"/></sheets></workbook>`)
+	zipWriteFile(zw, "xl/_rels/workbook.xml.rels", `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet" Target="worksheets/sheet1.xml"/><Relationship Id="rId2" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/sharedStrings" Target="sharedStrings.xml"/></Relationships>`)
+	var sb strings.Builder
+	sb.WriteString(`<?xml version="1.0" encoding="UTF-8" standalone="yes"?><sst xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" count="` + fmt.Sprint(len(ss)) + `" uniqueCount="` + fmt.Sprint(len(ss)) + `">`)
+	for _, s := range ss {
+		sb.WriteString(`<si><t>` + escapeXML(s) + `</t></si>`)
+	}
+	sb.WriteString(`</sst>`)
+	zipWriteFile(zw, "xl/sharedStrings.xml", sb.String())
+	var sb2 strings.Builder
+	sb2.WriteString(`<?xml version="1.0" encoding="UTF-8" standalone="yes"?><worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main"><sheetData>`)
+	row := 1
+	sb2.WriteString(`<row r="` + fmt.Sprint(row) + `"><c r="A1" t="inlineStr"><is><t>` + escapeXML(report.Topic) + `</t></is></c></row>`)
+	row = 2
+	sb2.WriteString(`<row r="` + fmt.Sprint(row) + `"><c r="A2" t="inlineStr"><is><t>摘要</t></is></c><c r="B2" t="inlineStr"><is><t>` + escapeXML(report.Summary) + `</t></is></c></row>`)
+	row = 3
+	sb2.WriteString(`<row r="` + fmt.Sprint(row) + `"><c r="A3" t="inlineStr"><is><t>章节</t></is></c><c r="B3" t="inlineStr"><is><t>内容</t></is></c></row>`)
+	for _, ch := range report.Chapters {
+		row++
+		sb2.WriteString(`<row r="` + fmt.Sprint(row) + `"><c r="A` + fmt.Sprint(row) + `" t="inlineStr"><is><t>` + escapeXML(ch.Title) + `</t></is></c><c r="B` + fmt.Sprint(row) + `" t="inlineStr"><is><t>` + escapeXML(ch.Body) + `</t></is></c></row>`)
+	}
+	sb2.WriteString(`</sheetData></worksheet>`)
+	zipWriteFile(zw, "xl/worksheets/sheet1.xml", sb2.String())
+	zw.Close()
+	return buf.Bytes(), nil
+}

eai_ap_app/backend-go/internal/api/report_gen.go

@@ -393,3 +393,75 @@ func promptReportPreview(req ReportGenRequest) reportContent {
 		CreatedAt: time.Now().Format("2006-01-02 15:04:05"),
 	}
 }
+
+// ReportExportXLSX POST /api/report/export/xlsx —— 导出报告为 Excel
+func ReportExportXLSX(c *gin.Context) {
+	user := middleware.CurrentUser(c)
+	if user == nil {
+		web.Fail(c, web.NewAuthError("未登录"))
+		return
+	}
+	var req struct {
+		Report reportContent `json:"report"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil || req.Report.Topic == "" {
+		web.Fail(c, web.NewBadRequest("report 不能为空"))
+		return
+	}
+	data, err := ExportReportXLSX(req.Report)
+	if err != nil {
+		web.Fail(c, web.NewBadRequest("Excel 生成失败: "+err.Error()))
+		return
+	}
+	c.Header("Content-Type", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
+	c.Header("Content-Disposition", "attachment; filename=\""+strings.ReplaceAll(req.Report.Topic, " ", "_")+".xlsx\"")
+	c.Data(200, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", data)
+}
+
+// ReportExportDOCX POST /api/report/export/docx —— 导出报告为 Word
+func ReportExportDOCX(c *gin.Context) {
+	user := middleware.CurrentUser(c)
+	if user == nil {
+		web.Fail(c, web.NewAuthError("未登录"))
+		return
+	}
+	var req struct {
+		Report reportContent `json:"report"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil || req.Report.Topic == "" {
+		web.Fail(c, web.NewBadRequest("report 不能为空"))
+		return
+	}
+	data, err := ExportReportDOCX(req.Report)
+	if err != nil {
+		web.Fail(c, web.NewBadRequest("Word 生成失败: "+err.Error()))
+		return
+	}
+	c.Header("Content-Type", "application/vnd.openxmlformats-officedocument.wordprocessingml.document")
+	c.Header("Content-Disposition", "attachment; filename=\""+strings.ReplaceAll(req.Report.Topic, " ", "_")+".docx\"")
+	c.Data(200, "application/vnd.openxmlformats-officedocument.wordprocessingml.document", data)
+}
+
+// ReportExportPPTX POST /api/report/export/pptx —— 导出报告为 PPTX
+func ReportExportPPTX(c *gin.Context) {
+	user := middleware.CurrentUser(c)
+	if user == nil {
+		web.Fail(c, web.NewAuthError("未登录"))
+		return
+	}
+	var req struct {
+		Report reportContent `json:"report"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil || req.Report.Topic == "" {
+		web.Fail(c, web.NewBadRequest("report 不能为空"))
+		return
+	}
+	data, err := ExportReportPPTX(req.Report)
+	if err != nil {
+		web.Fail(c, web.NewBadRequest("PPTX 生成失败: "+err.Error()))
+		return
+	}
+	c.Header("Content-Type", "application/vnd.openxmlformats-officedocument.presentationml.presentation")
+	c.Header("Content-Disposition", "attachment; filename=\""+strings.ReplaceAll(req.Report.Topic, " ", "_")+".pptx\"")
+	c.Data(200, "application/vnd.openxmlformats-officedocument.presentationml.presentation", data)
+}

eai_ap_app/backend-go/internal/api/router.go

@@ -121,6 +121,9 @@ func RegisterRoutes(r *gin.Engine, cfg *config.Config) {
 	// ── 报告生成（普通员工可访问）──
 	r.POST("/api/report/generate", middleware.Auth(cfg), ReportGenerate)
 	r.POST("/api/report/export/pdf", middleware.Auth(cfg), ReportExportPDF)
+	r.POST("/api/report/export/docx", middleware.Auth(cfg), ReportExportDOCX)
+	r.POST("/api/report/export/pptx", middleware.Auth(cfg), ReportExportPPTX)
+	r.POST("/api/report/export/xlsx", middleware.Auth(cfg), ReportExportXLSX)
 	r.POST("/api/report/preview", middleware.Auth(cfg), ReportPreview)
 
 	// 管理员维护

eai_ap_app/frontend/src/api/report.js

@@ -8,6 +8,18 @@ export function exportReportPDF(data) {
   return http.post('/report/export/pdf', data, { responseType: 'blob' })
 }
 
+export function exportReportDOCX(data) {
+  return http.post('/report/export/docx', data, { responseType: 'blob' })
+}
+
+export function exportReportPPTX(data) {
+  return http.post('/report/export/pptx', data, { responseType: 'blob' })
+}
+
+export function exportReportXLSX(data) {
+  return http.post('/report/export/xlsx', data, { responseType: 'blob' })
+}
+
 export function previewReport(data) {
   return http.post('/report/preview', data)
 }

eai_ap_app/frontend/src/views/report/ReportGenerationPage.vue

@@ -97,10 +97,20 @@
               </span>
             </div>
             <div class="card-actions" v-if="reportContent">
-              <el-button size="small" :loading="exporting" @click="exportToPDF">
-                <el-icon><Download /></el-icon>
-                导出 PDF
-              </el-button>
+              <el-dropdown trigger="click" @command="exportReport">
+                <el-button size="small" :loading="exporting">
+                  <el-icon><Download /></el-icon>
+                  导出 <el-icon><ArrowDown /></el-icon>
+                </el-button>
+                <template #dropdown>
+                  <el-dropdown-menu>
+                    <el-dropdown-item command="pdf"><el-icon><Document /></el-icon> PDF 文档</el-dropdown-item>
+                    <el-dropdown-item command="docx"><el-icon><Reading /></el-icon> Word 文档</el-dropdown-item>
+                    <el-dropdown-item command="pptx"><el-icon><Grid /></el-icon> PPT 演示文稿</el-dropdown-item>
+                    <el-dropdown-item command="xlsx"><el-icon><Reading /></el-icon> Excel 表格</el-dropdown-item>
+                  </el-dropdown-menu>
+                </template>
+              </el-dropdown>
               <el-button size="small" @click="resetReport">
                 清除
               </el-button>
@@ -148,8 +158,8 @@
 <script setup>
 import { onMounted, ref } from 'vue'
 import { ElMessage } from 'element-plus'
-import { Edit, Download } from '@element-plus/icons-vue'
-import { generateReport, exportReportPDF } from '@/api/report'
+import { Edit, Download, Document, Reading, ArrowDown, Grid } from '@element-plus/icons-vue'
+import { generateReport as apiGenerateReport, exportReportPDF, exportReportDOCX, exportReportPPTX, exportReportXLSX } from '@/api/report'
 import { listKnowledgeSpaces } from '@/api/knowledge'
 
 const generating = ref(false)
@@ -173,7 +183,7 @@ async function generateReport() {
 
   generating.value = true
   try {
-    const res = await generateReport({
+    const res = await apiGenerateReport({
       topic: form.value.topic.trim(),
       summary: form.value.summary,
       sections: form.value.sections,
@@ -197,28 +207,44 @@ async function generateReport() {
   }
 }
 
-async function exportToPDF() {
+async function exportReport(command) {
   if (!reportContent.value) return
 
   exporting.value = true
   try {
-    const blob = await exportReportPDF({
-      report: reportContent.value,
-    })
-
-    // 下载 PDF
+    const formatNames = { pdf: 'PDF', docx: 'Word', pptx: 'PPT', xlsx: 'Excel' }
+    const exts = { pdf: '.pdf', docx: '.docx', pptx: '.pptx', xlsx: '.xlsx' }
+    const formatName = formatNames[command] || '文件'
+    const ext = exts[command] || '.pdf'
+    let blob
+    switch (command) {
+      case 'pdf':
+        blob = await exportReportPDF({ report: reportContent.value })
+        break
+      case 'docx':
+        blob = await exportReportDOCX({ report: reportContent.value })
+        break
+      case 'pptx':
+        blob = await exportReportPPTX({ report: reportContent.value })
+        break
+      case 'xlsx':
+        blob = await exportReportXLSX({ report: reportContent.value })
+        break
+      default:
+        return
+    }
     const url = URL.createObjectURL(blob)
     const a = document.createElement('a')
     a.href = url
-    const filename = (reportContent.value.topic || 'report') + '.pdf'
-    a.download = filename.replace(/[^a-zA-Z一-龥　-￿]/g, '_')
+    const filename = (reportContent.value.topic || 'report') + ext
+    a.download = filename.replace(/[^a-zA-Z一-龥龥　-￿]/g, '_')
     document.body.appendChild(a)
     a.click()
     document.body.removeChild(a)
     URL.revokeObjectURL(url)
-    ElMessage.success('PDF 已下载')
+    ElMessage.success(`${formatName} 已下载`)
   } catch (error) {
-    ElMessage.error('PDF 导出失败')
+    ElMessage.error(`${formatName} 导出失败`)
   } finally {
     exporting.value = false
   }