Excel和 Word简易工具类 EasyPoi_Excel

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本文介绍EasyPoi库的使用方法，包括Excel和Word的导出与导入功能。详细解释了通过注解实现Excel数据的自动化处理，并提供了多个实用示例，如模板导出、数据导入等。

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[url]http://git.oschina.net/jueyue/easypoi[/url]
EasyPoi的几个入口工具类
[color=darkblue]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存在图片的bug,暂不支持)[/color]

关于Excel导出XLS和XLSX区别
[color=darkblue]1.导出时间XLS比XLSX快2-3倍
2.导出大小XLS是XLSX的2-3倍或者更多
3.导出需要综合网速和本地速度做考虑^~^[/color]

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;

    }