若依框架VUE分离版导入功能

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