导出
html页面
定义的按钮
<a class="btn btn-warning" onclick="$.table.exportExcel()" shiro:hasPermission="system:student:export">
<i class="fa fa-download"></i> 导出 </a>
映射的路径
exportUrl: prefix + "/export",
实体类
加入注解,导出谁就在谁上面加入注解---- @Excel
Controller层
//导出
@Log(title = "学生管理", businessType = BusinessType.EXPORT)
@RequiresPermissions("system:student:export")
@PostMapping("/export")
@ResponseBody
public AjaxResult export(SysStudent student)
{
List<SysStudent> list = studentService.selectStudentList(student);
ExcelUtil<SysStudent> util = new ExcelUtil<SysStudent>(SysStudent.class);
return util.exportExcel(list, "学生数据");
}
导入
没有模板就不知道要导入什么,所以需要先有一个模板
导入的时候,因必要条件还要确定是否重复,出现两个一摸一样的就没有必要了吧,我这是学生表,所以还需要对其通过名字进行查询
HTML页面
<a class="btn btn-info" onclick="$.table.importExcel()" shiro:hasPermission="system:student:import">
<i class="fa fa-upload"></i> 导入 </a>
映射
importUrl: prefix + "/importStudent",//导入
importTemplateUrl: prefix + "/importTemplate",//导出模板
导入的前端页面
<!-- 导入区域 -->
<script id="importTpl" type="text/template">
<form enctype="multipart/form-data" class="mt20 mb10">
<div class="col-xs-offset-1">
<input type="file" id="file" name="file"/>
<div class="mt10 pt5">
<input type="checkbox" id="updateSupport" name="updateSupport" title="如果登录账户已经存在,更新这条数据。"> 是否更新已经存在的用户数据
<a onclick="$.table.importTemplate()" class="btn btn-default btn-xs"><i class="fa fa-file-excel-o"></i> 下载模板</a>
</div>
<font color="red" class="pull-left mt10">
提示:仅允许导入“xls”或“xlsx”格式文件!
</font>
</div>
</form>
</script>
Controller层
/**
* 下载模板
*/
@RequiresPermissions("system:student:view")
@GetMapping("/importTemplate")
@ResponseBody
public AjaxResult importTemplate()
{
ExcelUtil<SysStudent> util = new ExcelUtil<SysStudent>(SysStudent.class);
return util.importTemplateExcel("学生数据");
}
/**
* 导入
*/
@RequiresPermissions("system:student:import")
@PostMapping("/importStudent")
@ResponseBody
public AjaxResult importStudent(MultipartFile file, boolean updateSupport) throws Exception
{
ExcelUtil<SysStudent> util = new ExcelUtil<SysStudent>(SysStudent.class);
List<SysStudent> studentList = util.importExcel(file.getInputStream());
String operName = ShiroUtils.getSysUser().getLoginName();
String message = studentService.importStudent(studentList, updateSupport, operName);
return AjaxResult.success(message);
}
service层
/**
* 导入学生数据
*
* @param studentList 学生数据列表
* @param updateSupport 是否更新支持,如果已存在,则进行更新数据
* @param operName 是否更新支持,如果已存在,则进行更新数据
* @return 结果
*/
public String importStudent(List<SysStudent> studentList, Boolean updateSupport, String operName) ;
serviceImpl层
/**
* 导入用户数据
*
* @param studentList 用户数据列表
* @param updateSupport 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
*/
private static final Logger log = LoggerFactory.getLogger(SysStudentServiceImpl.class);
@Override
public String importStudent(List<SysStudent> studentList, Boolean updateSupport, String operName)
{
if (StringUtils.isNull(studentList) || studentList.size() == 0)
{
throw new BusinessException("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 (SysStudent student : studentList)
{
try
{
// 验证是否存在这个用户
SysStudent u = studentMapper.selectStudentByName(student.getStudentName() );
System.out.print(student.getStudentSex()+"");
if (StringUtils.isNull(u))
{
student.setStudentName(student.getStudentName());
this.insertStudent(student);
successNum++;
successMsg.append("<br/>" + successNum + "学校信息" + student.getStudentName() + " 导入成功");
}
else if (updateSupport)
{
student.setUpdateBy(operName);
this.updateStudent(student);
successNum++;
successMsg.append("<br/>" + successNum + "学校信息 " + student.getStudentName() + " 更新成功");
}
else
{
failureNum++;
failureMsg.append("<br/>" + failureNum + "学校信息" + student.getStudentName() + " 已存在");
}
}
catch (Exception e)
{
failureNum++;
String msg = "<br/>" + failureNum + "学校信息" + student.getStudentName() + " 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 BusinessException(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();
}
mapper层
mapper.xml
写一个根据姓名查询的方法,避免重复的
<select id="selectStudentByName" parameterType="String" resultMap="SysStudentResult">
<include refid="selectStudentVo"/>
where student_name = #{studentName}
</select>
mapper.java文件写方法
/**标签:若依,String,updateSupport,Excel,SysStudent,-------,studentList,导入,student From: https://blog.51cto.com/u_15949848/6068466
* 通过学生姓名查询学生
*
* @param studentName 用户名
* @return 用户对象信息
*/
public SysStudent selectStudentByName(String studentName);