标签：错误数据 employee style frame col com 信息 down easyui
Excel导入导出
jxl：只能对Excel进行操作，属于比较老的框架
POI：是apache的项目，可对ms的word,Excel,PPT进行操作，包括office2003和2007。对两种版本的处理都比较好。具体操作请看官方的文档。
excel的使用场景：excel和word这些都是办公的软件，但是有时候系统需要结合办公软件来使用，比如经常用户要求查询
那些部门的销售情况销和人数的时候
poi的使用：引入需要的 包
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.11</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.11</version>
</dependency>
完成一个99乘法表的导出：
public void testPoiWrite99() throws Exception{
//创建一个工作薄
XSSFWorkbook workbook = new XSSFWorkbook();
//创建一个表格
XSSFSheet sheet = workbook.createSheet("99乘法表");
for (int i = 1; i <=9 ; i++) {
//9行 1*1
// 1*2 2*2
XSSFRow row = sheet.createRow(i-1);
for (int j = 1; j <= i ; j++) {
//创建一个单元格
XSSFCell cell = row.createCell(j-1);
cell.setCellValue(i+"*"+j+"="+(i*j));
}
}
//输出
FileOutputStream out = new FileOutputStream(
new File("99.xlsx"));
workbook.write(out);
out.close();
}
SpringMVC POI整合导入导出：
SpringMVC上传配置
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize">
<value>1048576</value>
</property>
</bean>
准备上传的按钮：
<form id="searchForm" action="/employee/download" method="post">
用户名： <input name="username" class="easyui-textbox" style="width:80px;height:32px">
邮件: <input name="email" class="easyui-textbox" style="width:80px;height:32px">
部门 :
<input class="easyui-combobox" name="departmentId"
data-options="valueField:‘id‘,textField:‘name‘,panelHeight:‘auto‘,url:‘/util/departmentList‘">
<a href="#" data-method="search" class="easyui-linkbutton" iconCls="icon-search">查找</a>
<%--默认提交到form表单路劲--%>
<button class="easyui-linkbutton" iconCls="icon-redo">导出</button>
</form>
<form></form>标签提交的路劲导controller层
@RequestMapping("/import")
public class ImportController extends BaseController {
//跳转到导入页面
@RequestMapping("/index")
public String index(){
return "import";
}
//跳转到导入页面
@RequestMapping("/xlsx")
public String importXlsx(MultipartFile xlsxFile) throws Exception{
System.out.println(xlsxFile.getContentType()); //文件的类型(application/vnd.openxmlformats-officedocument.spreadsheetml.sheet)
System.out.println(xlsxFile.getName()); //文件的名称(xlsxFile)
System.out.println(xlsxFile.getOriginalFilename());//文件的名称(employee-3.xlsx)
System.out.println(xlsxFile.getSize()); //文件的大小
return "import";
}
准备上传的一个方法：
public static List<String[]> importExcel(InputStream is) throws Exception{
//一.准备装数据的容器
List<String[]> list = new ArrayList<>();
//1.读取一个Excel文件(内存中)
Workbook wb = new XSSFWorkbook(is);
//2.拿到第个sheet表
Sheet sheet = wb.getSheetAt(0);
//3.拿到wb中的行(不要拿头部)
int lastRowNum = sheet.getLastRowNum();
for (int i = 1; i <= lastRowNum; i++) {
Row row = sheet.getRow(i);
//4.拿到每一列(格子)
short lastCellNum = row.getLastCellNum();
//二.准备一个String[]装一行数据(有几列就有几条数据)
String[] data = new String[lastCellNum];
for (int j = 0; j < lastCellNum; j++) {
Cell cell = row.getCell(j);
data[j] = cell.getStringCellValue();
}
//三.把一行数据写到集合中去
list.add(data);
}
return list;
}
最后成功了给出提示：
@RequestMapping("/xlsx")
public String importXlsx(MultipartFile xlsxFile, Model model) throws Exception{
//拿到上传的数据
List<String[]> list = ExcelUtils.importExcel(xlsxFile.getInputStream());
int count = 0;
for (int i = 0; i < list.size(); i++) {
//拿到每一行数据
String[] data = list.get(i);
//准备Employee对象进行数据放置
Employee employee = new Employee();
employee.setUsername(data[0]+ UUID.randomUUID().toString().substring(0,5));//随机一个名称
employee.setPassword(data[1]);
employee.setEmail(data[2]);
String age = data[3];
if(StringUtils.isNotBlank(age)){
employee.setAge(Integer.parseInt(age));
}
//拿到与设置部门
String deptName = data[4];
if(StringUtils.isNotBlank(deptName)){
Department department = departmentService.findByName(deptName)[这个方法需要根据用户名去拿到相应的部门，我们不在笔记中体现与完成这个方法，希望同学们是可以自己把这个简单的小功能补齐！];
employee.setDepartment(department);
}
employeeService.save(employee);
count ++;
}
//给出成功提示
model.addAttribute("count","成功导入"+count+"条数据！");
return "import";
}
springMVC导入：
准备一个导入页面：
<html>
<head>
<title>Title</title>
<%@include file="/WEB-INF/views/head.jsp" %>
</head>
<body>
<!-- 上传必需是:post，enctype="multipart/form-data"-->
<form action="/import/employeeXlsx" method="post" enctype="multipart/form-data">
<input class="easyui-filebox" name="empFile" style="width:80%"
data-options="prompt:‘选择一个文件...‘,buttonText: ‘选择文件‘" />
<button class="easyui-linkbutton">导入</button>
</form>
</body>
</html>
准备一个你要导入的文档：
进入controller层读取你要导入的文档最
@RequestMapping("/employeeXlsx1")
public String employeeXlsx1(MultipartFile empFile) throws Exception {
ImportParams params = new ImportParams();
params.setTitleRows(1);
//导入
List<Employee> list = ExcelImportUtil.importExcel(empFile.getInputStream(),
Employee.class, params);
for (Employee employee : list) {
System.out.println(employee);
//根据部门名称查询的部门对象
String deptName = employee.getDepartment().getName();
Department department = departmentService.findDepartmentByName(deptName);
//设置部门
employee.setDepartment(department);
//设置初始密码
employee.setPassword("123456");
//System.out.println(employee.getDepartment().getName());
employeeService.save(employee);
}
return "import";
}
最后添加验证功能：
//开启验证
params.setNeedVerfiy(true);
//开启自定义验证
params.setVerifyHandler(aisellEmployeeVerifyHander);
//导入
ExcelImportResult<Employee> result = ExcelImportUtil.importExcelMore(empFile.getInputStream(),
Employee.class, params);
//正确数据
for (Employee employee : result.getList()) {
System.out.println(employee);
//根据部门名称查询的部门对象
String deptName = employee.getDepartment().getName();
Department department = departmentService.findDepartmentByName(deptName);
//设置部门
employee.setDepartment(department);
employee.setPassword("123456");
//System.out.println(employee.getDepartment().getName());
employeeService.save(employee);
}
最后把导入的信息添加到数据库然后展示到页面上让用户查看：
@RequestMapping("/employeeXlsx")
public String employeeXlsx(MultipartFile empFile, HttpServletResponse response) throws Exception {
ImportParams params = new ImportParams();
params.setTitleRows(1);
//开启验证
params.setNeedVerfiy(true);
//开启自定义验证
params.setVerifyHandler(aisellEmployeeVerifyHander);
//导入
ExcelImportResult<Employee> result = ExcelImportUtil.importExcelMore(empFile.getInputStream(),
Employee.class, params);
//正确数据
for (Employee employee : result.getList()) {
System.out.println(employee);
//根据部门名称查询的部门对象
String deptName = employee.getDepartment().getName();
Department department = departmentService.findDepartmentByName(deptName);
//设置部门
employee.setDepartment(department);
employee.setPassword("123456");
//System.out.println(employee.getDepartment().getName());
employeeService.save(employee);
}
//错误的数据
for (Employee employee : result.getFailList()) {
System.out.println("错误数据："+employee);
}
//传回前台 让用户查看 修改
if(result.isVerfiyFail()){
//有时候信息
Workbook failWorkbook = result.getFailWorkbook();
//输出设置一堆参数
//把这个文件导出
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"); //mime类型
response.setHeader("Content-disposition", "attachment;filename=error.xlsx");
response.setHeader("Pragma", "No-cache");//设置不要缓存
//输出内容
OutputStream ouputStream = response.getOutputStream();
failWorkbook.write(ouputStream);
ouputStream.flush();
ouputStream.close();
}
return "import";
}
标签：错误数据 employee style frame col com 信息 down easyui
原文地址：https://www.cnblogs.com/1999wang/p/11337413.html
