导出
后端：
java
@PostMapping("/exportExcelData")
public void exportExcelData(HttpServletRequest request, HttpServletResponse response, @RequestBody ResData resData) throws IOException {
List<Long> menuIds = resData.getMenuIds();
List<Conversion> conversions = new ArrayList<>();
List<String> ktrFilePaths = new ArrayList<>();
for (Long menuId : menuIds) {
Conversion conversion = conversionMapper.selectById(menuId);
if (conversion != null) {
conversions.add(conversion);
String ktrFilePath = fileService.getKtrFilePathById(menuId);
if (ktrFilePath != null && !ktrFilePaths.contains(ktrFilePath)) {
ktrFilePaths.add(ktrFilePath);
}
}
}
// 创建Excel工作簿
HSSFWorkbook workbook = new HSSFWorkbook();
// 创建一个工作表
Sheet sheet = workbook.createSheet("Conversions");
// 创建单元格样式，并设置为文本格式
CellStyle textStyle = workbook.createCellStyle();
DataFormat format = workbook.createDataFormat();
textStyle.setDataFormat(format.getFormat("@")); // "@" 表示文本格式
// 创建标题行
Row titleRow = sheet.createRow(0);
// 创建单元格样式，并设置为文本格式
titleRow.createCell(0).setCellValue("主键");
titleRow.createCell(1).setCellValue("分组id");
titleRow.createCell(2).setCellValue("名称");
titleRow.createCell(3).setCellValue("备注");
titleRow.createCell(4).setCellValue("创建人");
titleRow.createCell(5).setCellValue("关联状态");
titleRow.createCell(6).setCellValue("XMl");
titleRow.createCell(7).setCellValue("创建时间");
// 应用文本格式到标题行的特定单元格
titleRow.getCell(0).setCellStyle(textStyle);
titleRow.getCell(1).setCellStyle(textStyle);
// 填充数据
int rowNum = 1;
for (Conversion conversion : conversions) {
Row row = sheet.createRow(rowNum++);
Cell cell = row.createCell(0);
cell.setCellValue(String.valueOf(conversion.getId()));
cell.setCellStyle(textStyle);
cell = row.createCell(1);
cell.setCellValue(String.valueOf(conversion.getGroupId()));
cell.setCellStyle(textStyle); // 应用文本格式
row.createCell(2).setCellValue(conversion.getName());
row.createCell(3).setCellValue(conversion.getRemark());
row.createCell(4).setCellValue(conversion.getCreateUserName());
row.createCell(5).setCellValue(conversion.getState());
row.createCell(6).setCellValue(conversion.getEditXml());
row.createCell(7).setCellValue(String.valueOf(conversion.getCreateTime()));
}
// 设置响应头
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode("conversions.xls", "UTF-8"));
// 设置响应头
response.setContentType("application/zip");
response.setHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode("conversions.zip", "UTF-8"));
ZipOutputStream zipOut = new ZipOutputStream(response.getOutputStream());
// 将Excel文件添加到压缩包
ZipEntry excelEntry = new ZipEntry("conversions.xls");
zipOut.putNextEntry(excelEntry);
workbook.write(zipOut);
zipOut.closeEntry();
workbook.close();
// 添加.ktr文件到ktr目录
for (String filePath : ktrFilePaths) {
File ktrFile = new File(filePath);
if (ktrFile.exists()) {
FileInputStream fis = new FileInputStream(ktrFile);
// 创建ZipEntry时，需要包含ktr目录
ZipEntry ktrEntry = new ZipEntry("ktr/" + ktrFile.getName());
zipOut.putNextEntry(ktrEntry);
byte[] bytes = new byte[1024];
int length;
while ((length = fis.read(bytes)) >= 0) {
zipOut.write(bytes, 0, length);
}
fis.close();
zipOut.closeEntry();
}
}
// 完成压缩包
zipOut.finish();
zipOut.close();
}导出后的文件组成：
excel文件：
前端：
javascript
<template>
<div class="app-container" style="width:100%;">
<el-form label-width="80px" label-position="left">
<el-form-item label="模型树">
<el-tree
ref="tree"
:data="treeData"
show-checkbox
:default-expand-all="false"
node-key="id"
highlight-current
:props="defaultProps"
/>
</el-form-item>
</el-form>
<div style="text-align: center;width:100%;">
<el-button type="primary" @click="onSave">导出</el-button>
<el-button type="danger" @click="closePage">取消</el-button>
</div>
</div>
</template>
<script>
import { getTreeData } from '@/api/dataSchema'
import { exportData,exportExcelData } from '@/api/conversion'
import { Message } from 'element-ui'
export default {
name: 'Zzjg',
inject: ['getList'],
props: {
proid: {
type: String,
required: true
}
},
data() {
return {
defaultProps: {
children: 'children',
label: 'name'
},
treeData: []
}
},
methods: {
getDetailed() {
const loading = this.$loading({
lock: true,
text: 'Loading',
spinner: 'el-icon-loading',
background: 'rgba(0, 0, 0, 0.7)'
})
getTreeData().then(response => {
this.treeData = response.data
loading.close()
}).catch(function() {
loading.close()
})
},
onSave() {
var menuIds = this.$refs.tree.getCheckedKeys()
if (menuIds.length === 0) {
Message({
message: '请选择要导出的模型',
type: 'error',
duration: 5 * 1000
})
return
} else {
const loading = this.$loading({
lock: true,
text: 'Loading',
spinner: 'el-icon-loading',
background: 'rgba(0, 0, 0, 0.7)'
})
exportExcelData({ menuIds: menuIds }).then(response => {
var fileName = 'download.zip'
const contentDisposition = response.headers['content-disposition']
if (contentDisposition) {
fileName = window.decodeURI(response.headers['content-disposition'].split('=')[1], 'UTF-8')
}
const blob = new Blob([response.data], {
type: `application/zip` // word文档为msword,pdf文档为pdf
})
const objectUrl = URL.createObjectURL(blob)
const link = document.createElement('a')
link.href = objectUrl
link.setAttribute('download', fileName)
document.body.appendChild(link)
link.click()
// 释放内存
window.URL.revokeObjectURL(link.href)
Message({
message: '导出成功',
type: 'success',
duration: 5 * 1000
})
loading.close()
this.$emit('update:visible', false)
this.getList()
}).catch(response => {
loading.close()
})
}
},
closePage() {
this.$emit('update:visible', false)
this.getList()
}
}
}
</script>代码拆解：
通过前端传来的menuIds进行遍历，把每一条数据插到excel里面并且通过menuIds找到文件名与之对应的ktr文件放到文件夹中。
java
for (Long menuId : menuIds) {
Conversion conversion = conversionMapper.selectById(menuId);
if (conversion != null) {
conversions.add(conversion);
String ktrFilePath = fileService.getKtrFilePathById(menuId);
if (ktrFilePath != null && !ktrFilePaths.contains(ktrFilePath)) {
ktrFilePaths.add(ktrFilePath);
}
}
}创建excel导出模板：
java
// 创建Excel工作簿
HSSFWorkbook workbook = new HSSFWorkbook();
// 创建一个工作表
Sheet sheet = workbook.createSheet("Conversions");
// 创建单元格样式，并设置为文本格式
CellStyle textStyle = workbook.createCellStyle();
DataFormat format = workbook.createDataFormat();
textStyle.setDataFormat(format.getFormat("@")); // "@" 表示文本格式
// 创建标题行
Row titleRow = sheet.createRow(0);
// 创建单元格样式，并设置为文本格式
titleRow.createCell(0).setCellValue("主键");
titleRow.createCell(1).setCellValue("分组id");
titleRow.createCell(2).setCellValue("名称");
titleRow.createCell(3).setCellValue("备注");
titleRow.createCell(4).setCellValue("创建人");
titleRow.createCell(5).setCellValue("关联状态");
titleRow.createCell(6).setCellValue("XMl");
titleRow.createCell(7).setCellValue("创建时间");
// 应用文本格式到标题行的特定单元格
titleRow.getCell(0).setCellStyle(textStyle);
titleRow.getCell(1).setCellStyle(textStyle);
// 填充数据
int rowNum = 1;
for (Conversion conversion : conversions) {
Row row = sheet.createRow(rowNum++);
Cell cell = row.createCell(0);
cell.setCellValue(String.valueOf(conversion.getId()));
cell.setCellStyle(textStyle);
cell = row.createCell(1);
cell.setCellValue(String.valueOf(conversion.getGroupId()));
cell.setCellStyle(textStyle); // 应用文本格式
row.createCell(2).setCellValue(conversion.getName());
row.createCell(3).setCellValue(conversion.getRemark());
row.createCell(4).setCellValue(conversion.getCreateUserName());
row.createCell(5).setCellValue(conversion.getState());
row.createCell(6).setCellValue(conversion.getEditXml());
row.createCell(7).setCellValue(String.valueOf(conversion.getCreateTime()));
}我这里的id和groupId位数特别长，所以对这两列做了默认为文本的处理，否则会变成科学计数法，会丢精。
具体如下：
java
// 创建单元格样式，并设置为文本格式
CellStyle textStyle = workbook.createCellStyle();
DataFormat format = workbook.createDataFormat();
textStyle.setDataFormat(format.getFormat("@")); // "@" 表示文本格式
// 应用文本格式到标题行的特定单元格
titleRow.getCell(0).setCellStyle(textStyle);
titleRow.getCell(1).setCellStyle(textStyle);
Row row = sheet.createRow(rowNum++);
Cell cell = row.createCell(0);
cell.setCellValue(String.valueOf(conversion.getId()));
cell.setCellStyle(textStyle);
cell = row.createCell(1);
cell.setCellValue(String.valueOf(conversion.getGroupId()));
cell.setCellStyle(textStyle); // 应用文本格式把excel文件添加到压缩包：
java
// 将Excel文件添加到压缩包
ZipEntry excelEntry = new ZipEntry("conversions.xls");
zipOut.putNextEntry(excelEntry);
workbook.write(zipOut);
zipOut.closeEntry();
workbook.close();把ktr文件放到ktr命名的文件夹中，并关闭压缩文件流
java
// 添加.ktr文件到ktr目录
for (String filePath : ktrFilePaths) {
File ktrFile = new File(filePath);
if (ktrFile.exists()) {
FileInputStream fis = new FileInputStream(ktrFile);
// 创建ZipEntry时，需要包含ktr目录
ZipEntry ktrEntry = new ZipEntry("ktr/" + ktrFile.getName());
zipOut.putNextEntry(ktrEntry);
byte[] bytes = new byte[1024];
int length;
while ((length = fis.read(bytes)) >= 0) {
zipOut.write(bytes, 0, length);
}
fis.close();
zipOut.closeEntry();
}
}
// 完成压缩包
zipOut.finish();
zipOut.close();导出就完成了。
导入
后端
导入的时候有一个要求，就是把导出时的id作为老的id存到数据库里，并生成新的id把新的id作为对应ktr的文件名存到对应的路径下面
解析数据：
java
@PostMapping("/insertData")
public ResultData insertData(@RequestAttribute Long _userId, HttpServletRequest request) {
MultipartHttpServletRequest req = (MultipartHttpServletRequest) request;
MultipartFile uploadFile = req.getFile("uploadfile_ant");
String originalName = uploadFile.getOriginalFilename();
String docPath = "";
List<Long> codes = new ArrayList<>(); // 用于存储所有导入的 ID
try {
String classpath = ResourceUtils.getURL("classpath:").getPath();
String path = classpath + File.separator + "static" + File.separator + "file" + File.separator + "yulan";
docPath = path + File.separator + originalName;
File dir = new File(path);
if (!dir.exists()) {
dir.mkdirs();
}
// 保存压缩文件
File zipFile = new File(docPath);
FileCopyUtils.copy(uploadFile.getInputStream(), new FileOutputStream(zipFile));
// 解压压缩文件
File unzipDir = new File(zipFile.getPath().substring(0, zipFile.getPath().lastIndexOf(".zip")));
if (!unzipDir.exists()) {
unzipDir.mkdirs();
}
unzipFile(zipFile, unzipDir);
// 处理解压后的文件
processUnzippedFiles(unzipDir);
return ResultData.success("ok", codes); // 返回所有导入的 ID 列表
} catch (Exception e) {
e.printStackTrace();
return ResultData.error("error");
}
}解压代码：
java
private void unzipFile(File zipFile, File unzipDir) throws IOException {
try (ZipInputStream zipIn = new ZipInputStream(new FileInputStream(zipFile))) {
ZipEntry entry = zipIn.getNextEntry();
while (entry != null) {
String filePath = unzipDir.getPath() + File.separator + entry.getName();
if (!entry.isDirectory()) {
extractFile(zipIn, filePath);
} else {
File dir = new File(filePath);
dir.mkdirs();
}
zipIn.closeEntry();
entry = zipIn.getNextEntry();
}
}
}
java
private void extractFile(ZipInputStream zipIn, String filePath) throws IOException {
new File(filePath).getParentFile().mkdirs();
try (BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(filePath))) {
byte[] bytesIn = new byte[4096];
int read = 0;
while ((read = zipIn.read(bytesIn)) != -1) {
bos.write(bytesIn, 0, read);
}
}
}根据不同的文件类型去做不同的处理：
java
private void processUnzippedFiles(File unzipDir) throws Exception {
// 遍历解压后的目录，处理每个文件
Files.walk(unzipDir.toPath())
.forEach(filePath -> {
try {
if (Files.isRegularFile(filePath) && filePath.toString().endsWith(".xls")) {
//如果是excel文件
processExcelFile(filePath, unzipDir.toPath());
// } else if (Files.isDirectory(filePath) && "ktr".equals(filePath.getFileName().toString())) {
// //ktr文件夹
// processKtrDirectory(filePath);
}
} catch (Exception e) {
e.printStackTrace();
}
});
}处理excel：
java
@Transactional
public void processExcelFile(Path filePath, Path zipPath) throws Exception {
Workbook workbook = null;
try {
FileInputStream excelFile = new FileInputStream(filePath.toFile());
workbook = WorkbookFactory.create(excelFile); // 支持多种格式
// 假设我们只处理第一个工作表
Sheet sheet = workbook.getSheetAt(0);
// 跳过标题行
int startRowIndex = 1;
DataFormatter formatter = new DataFormatter();
for (int i = startRowIndex; i <= sheet.getLastRowNum(); i++) {
Row row = sheet.getRow(i);
if (row != null) {
// 假设Excel文件的列顺序和数据库字段对应
Cell idCell = row.getCell(0);
Cell groupIdCell = row.getCell(1);
Cell NameCell = row.getCell(2);
Cell remarkCell = row.getCell(3);
Cell creatorCell = row.getCell(4);
Cell xmlCell = row.getCell(6);
// 检查空值和数据转换
String setOldId = formatter.formatCellValue(row.getCell(0));
String groupId = formatter.formatCellValue(row.getCell(1));
String remark = (remarkCell != null) ? remarkCell.getStringCellValue() : null;
String Name = (NameCell != null) ? NameCell.getStringCellValue() : null;
String creator = (creatorCell != null) ? creatorCell.getStringCellValue() :null;
String state = formatter.formatCellValue(row.getCell(5));
String XML = (xmlCell != null) ? xmlCell.getStringCellValue() : null;
// 创建一个数据对象，例如DataObject，并填充字段
Conversion conversion = new Conversion();
conversion.setId(SnowflakeIdGenerator.getId());
conversion.setOldId(Long.parseLong(setOldId));
conversion.setGroupId(Long.parseLong(groupId));
conversion.setName(Name);
conversion.setRemark(remark);
conversion.setCreateUserId(creator);
conversion.setState(Integer.parseInt(state));
conversion.setEditXml(XML);
conversion.setCreateTime(LocalDateTime.now());
// 保存到数据库
conversionMapper.insert(conversion);
//ktr文件夹
processKtrDirectory(zipPath, conversion.getId(), conversion.getOldId());
}
}
} catch (Exception e) {
throw new Exception("Error processing Excel file", e);
} finally {
if (workbook != null) {
try {
workbook.close();
} catch (IOException e) {
// Log and handle workbook close exception
}
}
}
}处理ktr：
java
private void processKtrDirectory(Path ktrDir, Long newId, Long oldId) throws Exception {
// 处理ktr文件夹，将文件保存到磁盘路径下的逻辑
// 例如：
String targetPath = ktrPath + File.separator + Constant.kettleScriptFileName + File.separator + Constant.ktrFileName + File.separator;
String newPath = ktrDir.toString()+"/ktr";
try {
Files.copy(Paths.get(newPath + File.separator + oldId.toString()), Paths.get(targetPath + newId.toString()));
} catch (IOException e) {
e.printStackTrace();
}
}用copy（source,target）就可以实现把文件保存到指定路径
fileService.getKtrFilePathById:
java
/**
* 根据menuId获取对应的.ktr文件路径。
* @return 文件路径
*/
@Service
@Transactional
public class FileServiceImpl implements FileService {
@Value("${ktr.path}")
private String ktrPath;
public String getKtrFilePathById(Long menuId) {
// 假设.ktr文件存储在 "/path/to/ktr/files/" 目录下，文件名为 "menuId.ktr"
String baseDir = ktrPath + File.separator + Constant.kettleScriptFileName + File.separator + Constant.ktrFileName+File.separator;
File file = new File(baseDir + menuId);
if (file.exists()) {
return file.getAbsolutePath();
} else {
return null; // 或者抛出一个异常，表示文件不存在
}
}
}前端：
javascript
<template>
<div class="app-container" style="margin: 0 auto;width:100%;">
<el-form ref="form" label-width="80px" label-position="left">
<!-- <el-form-item>
<div slot="label">分组<font color="red">*</font></div>
<el-select v-model="form.groupId" placeholder="请选择分组" style="width: 100%">
<el-option v-for="item in fzList" :key="item.id" :label="item.name" :value="item.id" />
</el-select>
</el-form-item> -->
<!-- <el-form-item>
<div slot="label">模型名称<font color="red">*</font></div>
<el-input v-model="form.name" style="width:100%;" :autosize="{ minRows: 2, maxRows: 2}" />
</el-form-item> -->
<el-form-item>
<div slot="label">导入模型<font color="red">*</font></div>
<el-upload
accept=".zip"
ref="upload"
name="uploadfile_ant"
class="upload-demo"
:limit="1"
:action="uploadpath"
:headers="uoloadheaders"
:before-upload="beforeAvatarUpload"
:on-success="handleAvatarSuccess"
:on-change="handleChange"
:on-remove="handleRemove"
:on-exceed="handleExceed"
:file-list="fileList"
>
<el-button size="small" icon="el-icon-upload" type="primary">选择模型文件</el-button>
<span style="color:red;"> 上传文件大小不能超过100MB</span>
</el-upload>
</el-form-item>
<!-- <el-form-item label="备注:">
<el-input v-model="form.remark" type="textarea" maxlength="200" rows="6" placeholder="备注" />
</el-form-item> -->
</el-form>
<!-- <div style="text-align: center;width:100%;">
<el-button type="primary" @click="onSave">保存</el-button>
<el-button type="danger" @click="closePage">取消</el-button>
</div> -->
</div>
</template>
<script>
import { getWorkList } from '@/api/dataSchema'
import { updateData } from '@/api/conversion'
import { Message, MessageBox } from 'element-ui'
import tool from '@/utils/tool'
export default {
name: 'Zzjg',
inject: ['getList'],
props: {
proid: {
type: String,
required: true
}
},
data() {
return {
uploadpath: '',
uoloadheaders: {},
fileData: '', // 文件上传数据（多文件合一）
fileList: [], // upload多文件数组
fzList: [],
form: {},
code: ''
}
},
methods: {
getDetailed() {
getWorkList().then(response => {
this.fzList = response.data
let address = process.env.NODE_ENV == 'development' ? process.env.VUE_APP_URL_RECON : process.env.VUE_APP_BASE_API;
var path = '/ltcloud/conversion/insertData'
this.uploadpath = address + path
this.uoloadheaders = {
'X-TOKEN' : tool.getCookie('X-Token'),
'client-url':location.href,
'applicationId':this.applicationId
}
})
},
handleAvatarSuccess(res, file) {
if (res.code === 20000) {
this.code = res.data
Message({
message: '上传成功',
type: 'success',
duration: 5 * 1000
})
} else {
Message({
message: res.msg,
type: 'error',
duration: 5 * 1000
})
}
},
// 移除
handleRemove(file, fileList) {
this.fileList = fileList
},
beforeAvatarUpload(file) {
const isLt2M = file.size / 1024 / 1024 < 100
if (!isLt2M) {
this.$message.error('上传文件大小不能超过100MB!')
}
return isLt2M
},
// 选取文件超过数量提示
handleExceed(files, fileList) {
this.$message.warning(`当前限制选择 1 个文件，本次选择了 ${files.length} 个文件，共选择了 ${files.length + fileList.length} 个文件`)
},
// 监控上传文件列表
handleChange(file, fileList) {
const existFile = fileList.slice(0, fileList.length - 1).find(f => f.name === file.name)
if (existFile) {
this.$message.error('当前文件已经存在!')
fileList.pop()
}
this.fileList = fileList
},
onSave() {
console.log('分组不能为空')
if (!this.form.groupId) {
this.$message.error('分组不能为空')
return
} else if (!this.form.name) {
this.$message.error('模型名称不能为空')
return
} else if (this.fileList.length === 0) {
this.$message.error('导入模型不能为空')
return
} else {
const loading = this.$loading({
lock: true,
text: 'Loading',
spinner: 'el-icon-loading',
background: 'rgba(0, 0, 0, 0.7)'
})
this.form.idList = this.code
updateData(this.form).then(response => {
Message({
message: '编辑成功',
type: 'success',
duration: 5 * 1000
})
loading.close()
this.$emit('update:visible', false)
this.getList()
}).catch(response => {
loading.close()
this.getList()
})
}
},
closePage() {
this.$emit('update:visible', false)
this.getList()
}
}
}
</script>
<style lang="less">
/deep/ .el-dialog {
width: 550px;
height: 650px;
}
.displayCol {
display: flex;
}
.newNum {
height: 20px;
width: 20px;
border: 1px solid #333;
border-radius: 50%;
text-align: center;
margin-top: 3px;
line-height: 20px;
}
/deep/.el-form-item__label {
text-align: left !important;
padding: 0 10px;
}
.disabled-text {
pointer-events: none; /* 阻止鼠标事件 */
cursor: default; /* 将鼠标光标设置为默认样式，表明文本不可点击 */
opacity: 0.5; /* 降低文本的不透明度以显示出它是不可交互的 */
user-select: none; /* 禁止文本被选中 */
}
.el-upload-list {
float: left;
margin: 0;
padding: 0;
list-style: none;
}
.el-upload {
margin-left: 0px;
display: inline-block;
text-align: center;
cursor: pointer;
outline: 0;
}
.el-upload__tip {
font-size: 12px;
color: #606266;
margin-top: 7px;
width: 300px;
line-height: 45px;
height: 10px;
}
</style>