新增没有对象的demo

src/test/java/com/alibaba/easyexcel/test/demo/read/NoModleDataListener.java

@@ -0,0 +1,50 @@
+package com.alibaba.easyexcel.test.demo.read;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.alibaba.excel.context.AnalysisContext;
+import com.alibaba.excel.event.AnalysisEventListener;
+import com.alibaba.fastjson.JSON;
+
+/**
+ * 直接用map接收数据
+ *
+ * @author Jiaju Zhuang
+ */
+public class NoModleDataListener extends AnalysisEventListener<Map<Integer, String>> {
+    private static final Logger LOGGER = LoggerFactory.getLogger(NoModleDataListener.class);
+    /**
+     * 每隔5条存储数据库，实际使用中可以3000条，然后清理list ，方便内存回收
+     */
+    private static final int BATCH_COUNT = 5;
+    List<Map<Integer, String>> list = new ArrayList<Map<Integer, String>>();
+
+    @Override
+    public void invoke(Map<Integer, String> data, AnalysisContext context) {
+        LOGGER.info("解析到一条数据:{}", JSON.toJSONString(data));
+        list.add(data);
+        if (list.size() >= BATCH_COUNT) {
+            saveData();
+            list.clear();
+        }
+    }
+
+    @Override
+    public void doAfterAllAnalysed(AnalysisContext context) {
+        saveData();
+        LOGGER.info("所有数据解析完成！");
+    }
+
+    /**
+     * 加上存储数据库
+     */
+    private void saveData() {
+        LOGGER.info("{}条数据，开始存储数据库！", list.size());
+        LOGGER.info("存储数据库成功！");
+    }
+}

src/test/java/com/alibaba/easyexcel/test/demo/read/ReadTest.java

@@ -217,4 +217,13 @@ public class ReadTest {
         }
     }
 
+    /**
+     * 不创建对象的读，不是特别推荐使用，都用String接收对日期的支持不是很好
+     */
+    @Test
+    public void noModleRead() {
+        String fileName = TestFileUtil.getPath() + "demo" + File.separator + "demo.xlsx";
+        // 这里 只要，然后读取第一个sheet 同步读取会自动finish
+        EasyExcel.read(fileName, new NoModleDataListener()).sheet().doRead();
+    }
 }

src/test/java/com/alibaba/easyexcel/test/demo/write/WriteTest.java

@@ -58,7 +58,6 @@ public class WriteTest {
         ExcelWriter excelWriter = EasyExcel.write(fileName, DemoData.class).build();
         WriteSheet writeSheet = EasyExcel.writerSheet("模板").build();
         excelWriter.write(data(), writeSheet);
-        // 进行加密
         /// 千万别忘记finish 会帮忙关闭流
         excelWriter.finish();
     }
@@ -379,6 +378,17 @@ public class WriteTest {
             .registerWriteHandler(new CustomCellWriteHandler()).sheet("模板").doWrite(data());
     }
 
+    /**
+     * 不创建对象的写
+     */
+    @Test
+    public void noModleWrite() {
+        // 写法1
+        String fileName = TestFileUtil.getPath() + "noModleWrite" + System.currentTimeMillis() + ".xlsx";
+        // 这里 需要指定写用哪个class去读，然后写到第一个sheet，名字为模板 然后文件流会自动关闭
+        EasyExcel.write(fileName).head(head()).sheet("模板").doWrite(dataList());
+    }
+
     private List<LongestMatchColumnWidthData> dataLong() {
         List<LongestMatchColumnWidthData> list = new ArrayList<LongestMatchColumnWidthData>();
         for (int i = 0; i < 10; i++) {
@@ -405,6 +415,18 @@ public class WriteTest {
         return list;
     }
 
+    private List<List<Object>> dataList() {
+        List<List<Object>> list = new ArrayList<List<Object>>();
+        for (int i = 0; i < 10; i++) {
+            List<Object> data = new ArrayList<Object>();
+            data.add("字符串" + i);
+            data.add(new Date());
+            data.add(0.56);
+            list.add(data);
+        }
+        return list;
+    }
+
     private List<DemoData> data() {
         List<DemoData> list = new ArrayList<DemoData>();
         for (int i = 0; i < 10; i++) {