用poi导出Excel表格，需要配置很多东西，也比较麻烦，这里使用poi的封装easypoi，可以快速配置，实现Excel或者word文件的导出。这里我们结合SpringMVC开发easypoi。
1，导入以下3个.jar包:这里是springMVC和easypoi所需的jar包，主要是easypoi-base和easypoi-web，其它都是关联所需的jar包，我们需要commons-lang3.jar包，开始使用commons-lang2.6版本会出现错误。
2，spring-mvc.xml配置如下：
class="org.springframework.web.servlet.view.BeanNameViewResolver" p:order="0">
1.ExcelExportUtil Excel导出(普通导出,模板导出)
2.ExcelImportUtil Excel导入
3.WordExportUtil Word导出(只支持docx ,doc版本poi
3 Controller
导入方式，可以根据映射关系，通过注解，字段名符合导入，如下例
public class RechannelreportEntity implements java.io.Serializable {
/**id*/
private java.lang.Integer id;
/**amount*/
@Excel(name="amount")
private java.lang.Integer amount;
/**amounts*/
@Excel(name="amounts")
private java.lang.Integer amounts;
/**counts*/
@Excel(name="counts")
private java.lang.Integer counts;
/**date*/
@Excel(name="date",format = "yyyy-MM-dd")
private java.util.Date date;
/**username*/
.......
@SuppressWarnings("unchecked")
@RequestMapping(params = "importExcel", method = RequestMethod.POST)
@ResponseBody
public AjaxJson importExcel(HttpServletRequest request, HttpServletResponse response) {
AjaxJson j = new AjaxJson();
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
Map fileMap = multipartRequest.getFileMap();
for (Map.Entry entity : fileMap.entrySet()) {
MultipartFile file = entity.getValue();// 获取上传文件对象
ImportParams params = new ImportParams();
params.setTitleRows(2);
params.setHeadRows(1);
params.setNeedSave(true);
try {
List listRechannelreportEntitys = ExcelImportUtil.importExcel(file.getInputStream(),RechannelreportEntity.class,params);
for (RechannelreportEntity rechannelreport : listRechannelreportEntitys) {
rechannelreportService.save(rechannelreport);
}
j.setMsg("文件导入成功！");
} catch (Exception e) {
j.setMsg("文件导入失败！");
logger.error(ExceptionUtil.getExceptionMessage(e));
}finally{
try {
file.getInputStream().close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return j;
导出方式一，可以自定义输出字段，并赋值
@RequestMapping(params = "exportXls2")
public String string2(RechannelreportEntity rechannelreport,HttpServletRequest request,HttpServletResponse response
, DataGrid dataGrid,ModelMap modelMap) {
//"&&searchColums=&undefined=&sqlbuilder=&username=CL007&date_begin=2017-01-17&date_end=2017-01-17"
List entityList = new ArrayList();
entityList.add(new ExcelExportEntity("日期", "cou1", 15));
entityList.add(new ExcelExportEntity("渠道号", "cou2", 15));
entityList.add(new ExcelExportEntity("原始金额", "cou3", 15));
entityList.add(new ExcelExportEntity("扣量金额", "cou4", 15));
entityList.add(new ExcelExportEntity("结算金额", "cou5", 15));
//这边的getData2 方法是对 MapExcelConstants.MAP_LIST进行赋值
List> dataResult = getData2(getDateGrid(rechannelreport, request));
modelMap.put(MapExcelConstants.ENTITY_LIST, entityList);
modelMap.put(MapExcelConstants.MAP_LIST, dataResult);
modelMap.put(MapExcelConstants.FILE_NAME, DateUtils.formatDate(new Date()) + "数据");
Date now = new Date();
modelMap.put(NormalExcelConstants.PARAMS, new ExportParams(rechannelreport.getUsername() + "对账单详情", "导出日期:" + DateUtils.formatDate(new Date()) + " ", "导出信息"));
return MapExcelConstants.JEECG_MAP_EXCEL_VIEW;
}
导出方式二，根据实体映射现实字段
@ExcelTarget("courseEntity")
public class CourseEntity implements java.io.Serializable {
/** 主键 */ private String id;
/** 课程名称 */ @Excel(name = "课程名称", orderNum = "1", needMerge = true)
private String name;
/** 老师主键 */ @ExcelEntity(id = "yuwen")
@ExcelVerify()
private TeacherEntity teacher;
/** 老师主键 */ @ExcelEntity(id = "shuxue")
private TeacherEntity shuxueteacher;
@ExcelCollection(name = "选课学生", orderNum = "4")
private List students;
@RequestMapping(params = "exportXls")
public String exportXls(CourseEntity course,HttpServletRequest request,HttpServletResponse response
, DataGrid dataGrid,ModelMap map) {
CriteriaQuery cq = new CriteriaQuery(CourseEntity.class, dataGrid);
org.jeecgframework.core.extend.hqlsearch.HqlGenerateUtil.installHql(cq, course, request.getParameterMap());
List courses = this.courseService.getListByCriteriaQuery(cq,false);
map.put(NormalExcelConstants.FILE_NAME,"用户信息");
map.put(NormalExcelConstants.CLASS,CourseEntity.class);
map.put(NormalExcelConstants.PARAMS,new ExportParams("课程列表", "导出人:Jeecg",
"导出信息"));
map.put(NormalExcelConstants.DATA_LIST,courses);
return NormalExcelConstants.JEECG_EXCEL_VIEW;
}
