导入实现流程
1.前端页面
导入按钮按钮(代码标红处 根据自己的来)
<el-col :span="1.5"> <el-button type="info" icon="el-icon-upload2" size="mini" @click="handleImport" v-hasPermi="['students:students:import']" >导入</el-button> </el-col>
<!-- 用户导入对话框 --> <el-dialog :title="upload.title" :visible.sync="upload.open" width="400px"> <el-upload ref="upload" :limit="1" accept=".xlsx, .xls" :headers="upload.headers" :action="upload.url + '?updateSupport=' + upload.updateSupport" :disabled="upload.isUploading" :on-progress="handleFileUploadProgress" :on-success="handleFileSuccess" :auto-upload="false" drag > <i class="el-icon-upload"></i> <div class="el-upload__text"> 将文件拖到此处,或 <em>点击上传</em> </div> <div class="el-upload__tip" slot="tip"> <el-checkbox v-model="upload.updateSupport" />是否更新已经存在的用户数据 <el-link type="info" style="font-size:12px" @click="importTemplate">下载模板</el-link> </div> <div class="el-upload__tip" style="color:red" slot="tip">提示:仅允许导入“xls”或“xlsx”格式文件!</div> </el-upload> <div slot="footer" class="dialog-footer"> <el-button type="primary" @click="submitFileForm">确 定</el-button> <el-button @click="upload.open = false">取 消</el-button> </div> </el-dialog>
script代码:
import { getToken } from "@/utils/auth";
这段代码在data(){}下的
代码标红处根据自己的来
// 用户导入参数 upload: { // 是否显示弹出层(用户导入) open: false, // 弹出层标题(用户导入) title: "", // 是否禁用上传 isUploading: false, // 是否更新已经存在的用户数据 updateSupport: 0, // 设置上传的请求头部 headers: { Authorization: "Bearer " + getToken() }, // 上传的地址 url: process.env.VUE_APP_BASE_API + "/students/students/importData" },
methods方法下
`students_template_${new Date().getTime()}.xlsx`这段代码是下载模版的文件夹名
/** 导入按钮操作 */ handleImport() { this.upload.title = "用户导入"; this.upload.open = true; }, /** 下载模板操作 */ importTemplate() { this.download('students/students/importTemplate', { }, `students_template_${new Date().getTime()}.xlsx`) }, // 文件上传中处理 handleFileUploadProgress(event, file, fileList) { this.upload.isUploading = true; }, // 文件上传成功处理 handleFileSuccess(response, file, fileList) { this.upload.open = false; this.upload.isUploading = false; this.$refs.upload.clearFiles(); this.$alert(response.msg, "导入结果", { dangerouslyUseHTMLString: true }); this.getList(); }, // 提交上传文件 submitFileForm() { this.$refs.upload.submit(); } }
到这前端就结束了
2.后端
1.在service下impl下的studentsServicelmpl(XXXServicelmpl根据你的来)下添加以下代码
private static final Logger log = LoggerFactory.getLogger(StudentsServiceImpl.class); @Autowired private StudentsMapper studentsMapper; @Autowired protected Validator validator;
代码标红处根据自己的来
/** * 导入用户数据 * * @param userList 用户数据列表 * @param isUpdateSupport 是否更新支持,如果已存在,则进行更新数据 * @param operName 操作用户 * @return 结果 */ @Override public String importStudents(List<Students> userList, Boolean isUpdateSupport, String operName) { if (StringUtils.isNull(userList) || userList.size() == 0) { throw new ServiceException("导入用户数据不能为空!"); } int successNum = 0; int failureNum = 0; StringBuilder successMsg = new StringBuilder(); StringBuilder failureMsg = new StringBuilder(); for (Students user : userList) { try { BeanValidators.validateWithException(validator, user); user.setCreateBy(operName); this.insertStudents(user); successNum++; successMsg.append("<br/>" + successNum + "、数据 " + " 导入成功"); } catch (Exception e) { failureNum++; String msg = "<br/>" + failureNum + "、数据 " + " 导入失败:"; failureMsg.append(msg + e.getMessage()); log.error(msg, e); } } if (failureNum > 0) { failureMsg.insert(0, "很抱歉,导入失败!共 " + failureNum + " 条数据格式不正确,错误如下:"); throw new ServiceException(failureMsg.toString()); } else { successMsg.insert(0, "恭喜您,数据已全部导入成功!共 " + successNum + " 条,数据如下:"); } return successMsg.toString(); }
在service下的IStudentsSrevice下添加以下代码
代码标红处根据自己的来
/** * 导入用户数据 * * @param userList 用户数据列表 * @param isUpdateSupport 是否更新支持,如果已存在,则进行更新数据 * @param operName 操作用户 * @return 结果 */ public String importStudents(List<Students> userList, Boolean isUpdateSupport, String operName);
studentsController:
添加注解代码IStudentsService 这段根据你的来
代码标红处根据自己的来
@PostMapping("/importTemplate")这段@PostMapping---当时我复制的官网,官网的是GetMapping 然后点击下载模板就报错了,我找了好久才看见的
/* * * 导入学生列表 * */ @Log(title = "学生管理", businessType = BusinessType.IMPORT) @PreAuthorize("@ss.hasPermi('students:user:import')") @PostMapping("/importData") public AjaxResult importData(MultipartFile file, boolean updateSupport) throws Exception { ExcelUtil<Students> util = new ExcelUtil<Students>(Students.class); List<Students> userList = util.importExcel(file.getInputStream()); String operName =getUsername(); String message = userService.importStudents(userList, updateSupport, operName); return success(message); } @PostMapping("/importTemplate") public void importTemplate(HttpServletResponse response) { ExcelUtil<Students> util = new ExcelUtil<Students>(Students.class); util.importTemplateExcel(response, "用户数据"); }
在doman下添加@Excel注解,默认为导出导入的,也可以单独设置仅导入Type.IMPOR
到这里导入和下载模板功能就完成了