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1.注解,导入导出都是基于注解的,实体上做上注解,标示导出对象,同时可以做一些操作
@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<StudentEntity> students;
2.基础导出 传入导出参数,导出对象,以及对象列表即可完成导出
HSSFWorkbook workbook = ExcelExportUtil.exportExcel(new ExportParams(
"2412312", "测试", "测试"), CourseEntity.class, list);
3.基础导出,带有索引 在到处参数设置一个值,就可以在导出列增加索引
ExportParams params = new ExportParams("2412312", "测试", "测试");
params.setAddIndex(true);
HSSFWorkbook workbook = ExcelExportUtil.exportExcel(params,
TeacherEntity.class, telist);
4.导出Map 创建类似注解的集合,即可完成Map的导出,略有麻烦
List<ExcelExportEntity> entity = new ArrayList<ExcelExportEntity>();
entity.add(new ExcelExportEntity("姓名", "name"));
entity.add(new ExcelExportEntity("性别", "sex"));
List<Map<String, String>> list = new ArrayList<Map<String, String>>();
Map<String, String> map;
for (int i = 0; i < 10; i++) {
map = new HashMap<String, String>();
map.put("name", "1" + i);
map.put("sex", "2" + i);
list.add(map);
}
HSSFWorkbook workbook = ExcelExportUtil.exportExcel(new ExportParams(
"测试", "测试"), entity, list);
5.模板导出 根据模板配置,完成对应导出
TemplateExportParams params = new TemplateExportParams();
params.setHeadingRows(2);
params.setHeadingStartRow(2);
Map<String,Object> map = new HashMap<String, Object>();
map.put("year", "2013");
map.put("sunCourses", list.size());
Map<String,Object> obj = new HashMap<String, Object>();
map.put("obj", obj);
obj.put("name", list.size());
params.setTemplateUrl("org/jeecgframework/poi/excel/doc/exportTemp.xls");
Workbook book = ExcelExportUtil.exportExcel(params, CourseEntity.class, list,
map);
6.导入 设置导入参数,传入文件或者流,即可获得相应的list
ImportParams params = new ImportParams();
params.setTitleRows(2);
params.setHeadRows(2);
//params.setSheetNum(9);
params.setNeedSave(true);
long start = new Date().getTime();
List<CourseEntity> list = ExcelImportUtil.importExcel(new File(
"d:/tt.xls"), CourseEntity.class, params);
7.和spring mvc的无缝融合 简单几句话,Excel导出搞定
@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<CourseEntity> 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;
}
8.Excel导入校验,过滤不符合规则的数据,追加错误信息到Excel,提供常用的校验规则,已经通用的校验接口
@Excel(name = "Email", width = 25)
@Max(value = 15,message = "max 最大值不能超过15")
private int email;
/**
* 手机号
*/
@Excel(name = "Mobile", width = 20)
@NotNull
private String mobile;
ExcelImportResult<ExcelVerifyEntity> result = ExcelImportUtil.importExcelVerify(new File(
"d:/tt.xls"), ExcelVerifyEntity.class, params);
for (int i = 0; i < result.getList().size(); i++) {
System.out.println(ReflectionToStringBuilder.toString(result.getList().get(i)));
}
9.导入Map 设置导入参数,传入文件或者流,即可获得相应的list,自定义Key,需要实现IExcelDataHandler接口
ImportParams params = new ImportParams();
List<Map<String,Object>> list = ExcelImportUtil.importExcel(new File(
"d:/tt.xls"), Map.class, params);
10.大数据量Excel导出 exportBigExcel 的方法 ,最后可以关闭closeExportBigExcel 也可以不关闭
11.如果View不起作用,已经发现被其他View处理掉的情况,使用下面这个,进行了统一封装,相同的效果
PoiBaseView
public static void render(Map<String, Object> model, HttpServletRequest request,
HttpServletResponse response, String viewName) {
PoiBaseView view = null;
if (BigExcelConstants.BIG_EXCEL_VIEW.equals(viewName)) {
view = new BigExcelExportView();
} else if (MapExcelConstants.JEECG_MAP_EXCEL_VIEW.equals(viewName)) {
view = new JeecgMapExcelView();
} else if (NormalExcelConstants.JEECG_EXCEL_VIEW.equals(viewName)) {
view = new JeecgSingleExcelView();
} else if (TemplateExcelConstants.JEECG_TEMPLATE_EXCEL_VIEW.equals(viewName)) {
view = new JeecgTemplateExcelView();
} else if (MapExcelGraphConstants.MAP_GRAPH_EXCEL_VIEW.equals(viewName)) {
view = new MapGraphExcelView();
}
try {
view.renderMergedOutputModel(model, request, response);
} catch (Exception e) {
LOGGER.error(e.getMessage(), e);
}
}
// Demo
@RequestMapping(params = "exportXls")
public void 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<CourseEntity> 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);
PoiBaseView.render(map,request,response,NormalExcelConstants.JEECG_EXCEL_VIEW);
}
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