跑通csv 写

src/main/java/com/alibaba/excel/csv/CsvCell.java

@@ -23,6 +23,8 @@ import org.apache.poi.ss.util.CellRangeAddress;
  */
 public class CsvCell implements Cell {
 
+    private String value;
+
     @Override
     public int getColumnIndex() {
         return 0;
@@ -75,11 +77,12 @@ public class CsvCell implements Cell {
 
     @Override
     public void setCellValue(double value) {
-
+        this.value = value + "";
     }
 
     @Override
     public void setCellValue(Date value) {
+        this.value = value.toString();
 
     }
 
@@ -100,7 +103,7 @@ public class CsvCell implements Cell {
 
     @Override
     public void setCellValue(String value) {
-
+        this.value = value;
     }
 
     @Override
@@ -140,7 +143,7 @@ public class CsvCell implements Cell {
 
     @Override
     public String getStringCellValue() {
-        return null;
+        return value;
     }
 
     @Override
@@ -222,4 +225,7 @@ public class CsvCell implements Cell {
     public boolean isPartOfArrayFormulaGroup() {
         return false;
     }
+
+
+
 }

src/main/java/com/alibaba/excel/csv/CsvRow.java

@@ -1,6 +1,8 @@
 package com.alibaba.excel.csv;
 
+import java.util.ArrayList;
 import java.util.Iterator;
+import java.util.List;
 
 import org.apache.poi.ss.usermodel.Cell;
 import org.apache.poi.ss.usermodel.CellStyle;
@@ -15,10 +17,13 @@ import org.apache.poi.ss.usermodel.Sheet;
  */
 public class CsvRow implements Row {
 
+   public List<CsvCell> list = new ArrayList<>();
 
     @Override
     public Cell createCell(int column) {
-        return new CsvCell();
+        CsvCell cell = new CsvCell();
+        list.add(cell);
+        return cell;
     }
 
     @Override
@@ -43,7 +48,7 @@ public class CsvRow implements Row {
 
     @Override
     public Cell getCell(int cellnum) {
-        return null;
+        return list.get(cellnum);
     }
 
     @Override
@@ -58,7 +63,7 @@ public class CsvRow implements Row {
 
     @Override
     public short getLastCellNum() {
-        return 0;
+        return (short)list.size();
     }
 
     @Override

src/main/java/com/alibaba/excel/csv/CsvSheet.java

@@ -9,6 +9,7 @@ import java.util.Collection;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.stream.Collectors;
 
 import com.alibaba.excel.util.ListUtils;
 
@@ -668,7 +669,9 @@ public class CsvSheet implements Sheet {
 
     public void flushData() {
         try {
-            csvPrinter.printRecord();
+            for (CsvRow row : rowCache) {
+                csvPrinter.printRecord(row.list.stream().map(CsvCell::getStringCellValue).collect(Collectors.toList()));
+            }
         } catch (IOException e) {
             e.printStackTrace();
         }

src/main/java/com/alibaba/excel/csv/CsvWorkbook.java

@@ -177,6 +177,7 @@ public class CsvWorkbook implements Workbook {
 
     @Override
     public void write(OutputStream stream) throws IOException {
+        csvSheet.flushData();
         csvSheet.csvPrinter.flush();
         csvSheet.csvPrinter.close();
     }

src/test/java/com/alibaba/easyexcel/test/temp/csv/CsvReadTest.java

@@ -23,7 +23,7 @@ public class CsvReadTest {
 
     @Test
     public void write() throws Exception {
-        Appendable out = new PrintWriter(TestFileUtil.createNewFile("csvWrite.csv"));
+        Appendable out = new PrintWriter(TestFileUtil.createNewFile("csvWrite1.csv"));
         CSVPrinter printer = CSVFormat.DEFAULT.withHeader("userId", "userName")
             .print(out);
         for (int i = 0; i < 10; i++) {