1、去除ExcelKit 类中方法上的无意义异常声明

2、重构ExcelKit 部分逻辑

test/com/lxyer/excel/ExcelKitTest.java

@@ -1,19 +1,48 @@
 package com.lxyer.excel;
 
 import net.tccn.kit.poi.ExcelKit;
+import org.apache.poi.ss.usermodel.Workbook;
+import org.junit.Test;
 
-import java.io.File;
-import java.io.IOException;
-import java.util.List;
-import java.util.Map;
+import java.io.*;
+import java.util.*;
+
+import static java.util.Arrays.asList;
 
 /**
  * @author: liangxianyou at 2018/9/15 7:52.
  */
 public class ExcelKitTest {
 
+    @Test
+    public void mapExport(){
+        // 数据List<T>  T可以是map，也可以是某个Javabean
+        List list = asList(
+                Map.of("name", "张三", "age", 12), //jdk9+语法，创建Map并初始化数据
+                Map.of("name", "李四", "age", 11)
+        );
+
+        // 表头数据 k-v，k：map的数据key，v：表头展示的名称
+        LinkedHashMap heads = new LinkedHashMap();
+        heads.put("name", "姓名");
+        heads.put("age", "年龄");
+
+
+        // 将List<T> 数据写入到新创建的一个Excel工作薄对象中
+        //Workbook workbook = ExcelKit.getWorkbook(new File("target/abx2.xls"));
+
+        Workbook wb = ExcelKit.exportExcel(list, heads);
+
+        try {
+            // 存贮数据到文件中
+            wb.write(new FileOutputStream(new File("target/abx.xls")));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
     //read excel by fields
-    //@Test
+    @Test
     public void readTest() throws IOException {
         /*String sql1 = "select a, b, c from Sheet1";
         String sql2 = "select a, b, c from Sheet1 where a=1 order by b";
@@ -24,22 +53,31 @@ public class ExcelKitTest {
         System.out.println(sql1.substring(0,sql1.indexOf("from")).replace("select", "").replace(" ", ""));
         */
 
-        String[] fields ={"a", "b", "c"};
-        File file = new File("res/test.xlsx");
+        String[] fields ={"name", "age"};
+        File file = new File("target/abx.xls");
         List<Map> list = ExcelKit.readExcel(file, fields);
-        System.out.println(list.size());
+        System.out.println("list.size: " + list.size());
 
-    }
-
-    //read excel no fields
-    //@Test
-    public void readTest2() throws IOException {
-        List<Map> list = ExcelKit.readExcel(new File("res/test.xlsx"));
 
         list.forEach(x->{
             x.forEach((k,v)->{
-                System.out.println(String.format("%s:%s", k, v));
+                System.out.print(String.format("%s:%s \t", k, v));
             });
+            System.out.println();
+        });
+    }
+
+    //read excel no fields
+    @Test
+    public void readTest2() throws IOException {
+        // 在不传 String[] fields 会把值从左到右分别赋值给 a...z,这样的key上
+        List<Map> list = ExcelKit.readExcel(new File("target/abx.xls"));
+
+        list.forEach(x->{
+            x.forEach((k,v)->{
+                System.out.print(String.format("%s:%s \t", k, v));
+            });
+            System.out.println();
         });
     }
 

test/com/lxyer/excel/ExportKitTest.java

@@ -1,12 +1,11 @@
 package com.lxyer.excel;
 
 import net.tccn.kit.poi.ExcelExportKit;
+import net.tccn.kit.poi.ExcelKit;
+import org.apache.poi.ss.usermodel.Workbook;
 import org.junit.Test;
 
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.FileOutputStream;
-import java.io.IOException;
+import java.io.*;
 import java.lang.reflect.Field;
 import java.util.*;
 import java.util.function.BiFunction;
@@ -14,6 +13,8 @@ import java.util.function.Function;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;
 
+import static java.util.Arrays.asList;
+
 /**
  *  以下均为非poi导出使用示例
  * 1、导出List<javabean>示例
@@ -152,11 +153,6 @@ public class ExportKitTest {
 
     /**
      * 5、redkale web项目导出示例
-     * @param head
-     * @param rows
-     * @param response
-     * @param xlsName
-     * @param fun
      * @return
      * @throws IOException
      */