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jueyue authored 2018-09-22 11:11 . 删除一些非必要文件

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

	@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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