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GVPLemur开源 / easypoi

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jueyue   整理下说明文档 2017-03-18
--------------------------EasyPoi 模板 表达式支持--------------------------- 空格分割- 三目运算  {{test ? obj:obj2}}- n: 表示 这个cell是数值类型 {{n:}}- le: 代表长度{{le:()}} 在if/else 运用{{le:() > 8 ? obj1 :  obj2}}- fd: 格式化时间 {{fd:(obj;yyyy-MM-dd)}}- fn: 格式化数字 {{fn:(obj;###.00)}}- fe: 遍历数据,创建row- !fe: 遍历数据不创建row - $fe: 下移插入,把当前行,下面的行全部下移.size()行,然后插入- !if: 删除当前列 {{!if:(test)}}- 单引号表示常量值 ''  比如'1' 那么输出的就是 1- &NULL& 控制- ]] 换行符---------------------------EasyPoi导出实例---------------------------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```Java	@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```Java	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```Java	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```Java	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```Java	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```Java	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```Java	@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```Java    @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```Java	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```Java	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);        }    }
jueyue   更新下render例子 2017-03-19
	// 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);	}
jueyue   整理下说明文档 2017-03-18
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Java
1
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