修改空字符串读取可能为空的bug

src/main/java/com/alibaba/excel/analysis/v07/SharedStringsTableHandler.java

@@ -30,15 +30,23 @@ public class SharedStringsTableHandler extends DefaultHandler {
 
     @Override
     public void startElement(String uri, String localName, String name, Attributes attributes) {
-        if (SI_TAG.equals(name)) {
-            currentData = "";
+        if (T_TAG.equals(name)) {
+            currentElementData = null;
+        } else if (SI_TAG.equals(name)) {
+            currentData = null;
         }
     }
 
     @Override
     public void endElement(String uri, String localName, String name) {
         if (T_TAG.equals(name)) {
-            currentData += currentElementData;
+            if (currentData == null) {
+                currentData = currentElementData;
+            } else {
+                if (currentElementData != null) {
+                    currentData += currentElementData;
+                }
+            }
         } else if (SI_TAG.equals(name)) {
             readCache.put(currentData);
         }

src/test/java/com/alibaba/easyexcel/test/temp/Lock2Test.java

@@ -9,7 +9,12 @@ import org.junit.Test;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import com.alibaba.easyexcel.test.demo.read.DemoData;
+import com.alibaba.easyexcel.test.demo.read.DemoDataListener;
+import com.alibaba.easyexcel.test.util.TestFileUtil;
 import com.alibaba.excel.EasyExcel;
+import com.alibaba.excel.ExcelReader;
+import com.alibaba.excel.read.metadata.ReadSheet;
 import com.alibaba.excel.support.ExcelTypeEnum;
 import com.alibaba.fastjson.JSON;
 
@@ -24,16 +29,21 @@ public class Lock2Test {
 
     @Test
     public void test() throws Exception {
-        File file = new File("D:\\test\\珠海2.xlsx");
+        File file = new File("D:\\test\\test001.xlsx");
 
         List<Object> list = EasyExcel.read(file).sheet().headRowNumber(0).doReadSync();
         LOGGER.info("数据：{}", list.size());
         for (Object data : list) {
             LOGGER.info("返回数据：{}", JSON.toJSONString(data));
         }
-        LOGGER.info("文件状态：{}", file.exists());
-        file.delete();
-        Thread.sleep(500 * 1000);
+    }
+
+    @Test
+    public void simpleRead() {
+        // 写法1：
+        String fileName = "D:\\test\\珠海 (1).xlsx";
+        // 这里 需要指定读用哪个class去读，然后读取第一个sheet 文件流会自动关闭
+        EasyExcel.read(fileName, LockData.class, new LockDataListener()).sheet().doRead();
     }
 
     @Test
@@ -50,5 +60,4 @@ public class Lock2Test {
         Thread.sleep(500 * 1000);
     }
 
-
 }

src/test/java/com/alibaba/easyexcel/test/temp/LockData.java

@@ -0,0 +1,22 @@
+package com.alibaba.easyexcel.test.temp;
+
+import lombok.Data;
+
+/**
+ * 基础数据类.这里的排序和excel里面的排序一致
+ *
+ * @author Jiaju Zhuang
+ **/
+@Data
+public class LockData {
+    private String string0;
+    private String string1;
+    private String string2;
+    private String string3;
+    private String string4;
+    private String string5;
+    private String string6;
+    private String string7;
+    private String string8;
+
+}

src/test/java/com/alibaba/easyexcel/test/temp/LockDataListener.java

@@ -0,0 +1,50 @@
+package com.alibaba.easyexcel.test.temp;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.alibaba.easyexcel.test.demo.read.DemoDataListener;
+import com.alibaba.excel.context.AnalysisContext;
+import com.alibaba.excel.event.AnalysisEventListener;
+import com.alibaba.fastjson.JSON;
+
+/**
+ * 模板的读取类
+ *
+ * @author Jiaju Zhuang
+ */
+public class LockDataListener extends AnalysisEventListener<LockData> {
+    private static final Logger LOGGER = LoggerFactory.getLogger(DemoDataListener.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<LockData> list = new ArrayList<LockData>();
+
+    @Override
+    public void invoke(LockData 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！");
+    }
+}