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autopoi/autopoi-web/src/test/java/DaoChuBigDataTest.java

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+import org.apache.poi.ss.usermodel.Workbook;
+import org.jeecgframework.poi.excel.ExcelExportUtil;
+import org.jeecgframework.poi.excel.entity.ExportParams;
+import org.jeecgframework.poi.handler.inter.IExcelExportServer;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+/**
+ * @Description: 大数据导出示例
+ * @author: liusq
+ * @date: 2022年1月4日
+ */
+public class DaoChuBigDataTest {
+    /**
+     * 导出测试方法
+     * 参考：http://doc.wupaas.com/docs/easypoi/easypoi-1c10lbsojh62f
+     * 参考：https://blog.csdn.net/weixin_45214729/article/details/118552415
+     * @author liusq
+     * @date: 2022年1月4日
+     * @throws Exception
+     */
+    public static void bigDataExport() throws Exception {
+        Workbook workbook = null;
+        List<TestEntity> aList = new ArrayList<TestEntity>();
+        ExportParams exportParams = new ExportParams();
+        Date   start    = new Date();
+        //模拟100w数据
+        for(int j=0;j<1000000;j++){
+            TestEntity testEntity = new TestEntity();
+            testEntity.setName("李四"+j);
+            testEntity.setAge(j);
+            aList.add(testEntity);
+        }
+        //分别是 totalPage是总页数，pageSize 页码长度
+        int totalPage = (aList.size() / 100000) + 1;
+        int pageSize = 100000;
+        /**
+         * params:（表格标题属性）筛选条件，sheet值
+         * TestEntity：表格的实体类
+         */
+        workbook = ExcelExportUtil.exportBigExcel(exportParams,TestEntity.class, new IExcelExportServer() {
+            /**
+             * obj 就是下面的totalPage，限制条件
+             * page 是页数，他是在分页进行文件转换，page每次+1
+             */
+            @Override
+            public List<Object> selectListForExcelExport(Object obj, int page) {
+                //很重要！！这里面整个方法体，其实就是将所有的数据aList分批返回处理
+                //分批的方式很多，我直接用了subList。然后 每批不能太大。我试了30000一批，
+                //特别注意，最好每次10000条，否则，可能有内存溢出风险
+                if (page > totalPage) {
+                    return null;
+                }
+                // fromIndex开始索引，toIndex结束索引
+                int fromIndex = (page - 1) * pageSize;
+                int toIndex = page != totalPage ? fromIndex + pageSize :aList.size();
+                //不是空时：一直循环运行selectListForExcelExport。每次返回1万条数据。
+                List<Object> list = new ArrayList<>();
+                list.addAll(aList.subList(fromIndex, toIndex));
+                return list;
+            }
+        }, totalPage);
+        File savefile = new File("D:/excel/");
+        if (!savefile.exists()) {
+            savefile.mkdirs();
+        }
+        FileOutputStream fos = new FileOutputStream("D:/excel/ExcelExportBigData.bigDataExport.xlsx");
+        workbook.write(fos);
+        fos.close();
+        System.out.println("耗时(秒)："+((new Date().getTime() - start.getTime())/ 1000));
+    }
+
+    public static void main(String[] args) throws Exception {
+       bigDataExport();
+    }
+}

autopoi/autopoi-web/src/test/java/DaoChuSheetTest.java

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+import org.apache.poi.ss.usermodel.Workbook;
+import org.jeecgframework.poi.excel.ExcelExportUtil;
+import org.jeecgframework.poi.excel.entity.ExportParams;
+import org.jeecgframework.poi.excel.entity.TemplateExportParams;
+import org.jeecgframework.poi.excel.entity.enmus.ExcelType;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @Description: 参考文档：http://doc.jeecg.com/2044223
+ * @author: scott
+ * @date: 2020年09月16日 11:46
+ */
+public class DaoChuSheetTest {
+    private static final String basePath = "G:\\needtodeplay\\autopoi-framework-sy-4.0\\autopoi-web\\src\\test\\resources\\templates\\";
+
+    public static ExportParams getExportParams(String name) {
+        return  new ExportParams(name,name,ExcelType.XSSF);
+    }
+    public static Workbook test() {
+        /**
+         * 多个Map
+         * title:对应表格Title
+         * entity：对应表格对应实体
+         * data：Collection 数据
+         */
+        List<Map<String, Object>> listMap = new ArrayList<Map<String, Object>>();
+        for(int i=0;i<3;i++){
+            Map<String, Object> map = new HashMap<String, Object>();
+            map.put("title", getExportParams("测试"+i));//表格Title
+            map.put("entity",TestEntity.class);//表格对应实体
+            List<TestEntity> ls=new ArrayList<TestEntity> ();
+            for(int j=0;j<10;j++){
+                TestEntity testEntity = new TestEntity();
+                testEntity.setName("张三"+i+j);
+                testEntity.setAge(18+i+j);
+                ls.add(testEntity);
+            }
+            List<Map> ls2=new ArrayList<Map> ();
+            for(int j=0;j<10;j++){
+                Map map1 = new HashMap();
+                map1.put("name","李四"+i+j);
+                map1.put("age",18+i+j);
+                ls2.add(map1);
+            }
+            map.put("data", ls);//ls or ls2
+            listMap.add(map);
+        }
+        Workbook workbook = ExcelExportUtil.exportExcel(listMap, ExcelType.XSSF);
+        return workbook;
+    }
+
+    public static void main(String[] args) throws IOException {
+        Workbook workbook = test();
+        File savefile = new File(basePath);
+        if (!savefile.exists()) {
+            savefile.mkdirs();
+        }
+        FileOutputStream fos = new FileOutputStream(basePath + "testSheet.xlsx");
+        workbook.write(fos);
+        fos.close();
+    }
+}

autopoi/autopoi-web/src/test/java/DaoChuTest.java

@@ -0,0 +1,55 @@
+import org.apache.poi.ss.usermodel.Workbook;
+import org.jeecgframework.poi.excel.ExcelExportUtil;
+import org.jeecgframework.poi.excel.entity.TemplateExportParams;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @Description: TODO
+ * @author: scott
+ * @date: 2020年09月16日 11:46
+ */
+public class DaoChuTest {
+    private static final String basePath = "G:\\needtodeplay\\autopoi-framework-sy-4.0\\autopoi-web\\src\\test\\resources\\templates\\";
+
+    public static TemplateExportParams getTemplateParams(String name) {
+        return new TemplateExportParams(basePath + name + ".xlsx");
+    }
+
+    public static Workbook test(String name) {
+        TemplateExportParams params = getTemplateParams(name);
+        Map<String, Object> map = new HashMap<String, Object>();
+        List<Map<String, Object>> listMap = new ArrayList<Map<String, Object>>();
+        for (int i = 0; i < 3; i++) {
+            Map<String, Object> lm = new HashMap<String, Object>();
+            lm.put("name", "姓名1" + i);
+            lm.put("isTts", i);
+            lm.put("sname", "s姓名");
+            lm.put("ttsContent", "ttsContent内容");
+            lm.put("rate", 1000 + i);
+            listMap.add(lm);
+        }
+        map.put("autoList", listMap);
+        Workbook workbook = ExcelExportUtil.exportExcel(params, map);
+        return workbook;
+    }
+
+    public static void main(String[] args) throws IOException {
+        String temName = "test";
+        String temNameNextM = "testNextMarge";
+        Workbook workbook = test(temNameNextM);
+        File savefile = new File(basePath);
+        if (!savefile.exists()) {
+            savefile.mkdirs();
+        }
+        FileOutputStream fos = new FileOutputStream(basePath + "testNew.xlsx");
+        workbook.write(fos);
+        fos.close();
+    }
+}

autopoi/autopoi-web/src/test/java/DaoChuWordTest.java

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+import org.apache.poi.xwpf.usermodel.XWPFDocument;
+import org.jeecgframework.poi.word.WordExportUtil;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.text.SimpleDateFormat;
+import java.util.*;
+
+/**
+ * @Description: TODO
+ * @author: scott
+ * @date: 2020年09月16日 11:46
+ */
+public class DaoChuWordTest {
+    private static final String basePath = "G:\\needtodeplay\\autopoi-framework-sy-4.0\\autopoi-web\\src\\test\\resources\\templates\\";
+
+    public static void main(String[] args) throws Exception {
+        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+        String curTime = format.format(new Date());
+
+        Map<String, Object> map = new HashMap<String, Object>();
+        List<Map<String, Object>> mapList = new ArrayList<Map<String, Object>>();
+//        Map<String, Object> map1 = new HashMap<String, Object>();
+//        map1.put("type", "个人所得税");
+//        map1.put("presum", "1580");
+//        map1.put("thissum", "1750");
+//        map1.put("curmonth", "1-11月");
+//        map1.put("now", curTime);
+//        mapList.add(map1);
+//        Map<String, Object> map2 = new HashMap<String, Object>();
+//        map2.put("type", "增值税");
+//        map2.put("presum", "1080");
+//        map2.put("thissum", "1650");
+//        map2.put("curmonth", "1-11月");
+//        map2.put("now", curTime);
+//        mapList.add(map2);
+        map.put("taxlist", mapList);
+        map.put("totalpreyear", "2660");
+        map.put("totalthisyear", "3400");
+
+        map.put("type", "增值税");
+        map.put("presum", "1080");
+        map.put("thissum", "1650");
+        map.put("curmonth", "1-11月");
+        map.put("now", curTime);
+
+        //单列
+        XWPFDocument document = WordExportUtil.exportWord07(basePath + "纳税信息.docx", map);
+        File savefile = new File("D:\\poi");
+        if (!savefile.exists()) {
+            savefile.mkdirs();
+        }
+        FileOutputStream fos = new FileOutputStream(basePath + "纳税信息new.docx");
+        document.write(fos);
+        fos.close();
+    }
+}

autopoi/autopoi-web/src/test/java/TestEntity.java

@@ -0,0 +1,29 @@
+import org.jeecgframework.poi.excel.annotation.Excel;
+
+/**
+ * @Description: TODO
+ * @author: lsq
+ * @date: 2021年02月02日 16:31
+ */
+public class TestEntity {
+    @Excel(name = "姓名", width = 15)
+    private String name;
+    @Excel(name = "年龄", width = 15)
+    private Integer age;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Integer getAge() {
+        return age;
+    }
+
+    public void setAge(Integer age) {
+        this.age = age;
+    }
+}