add instant converter

delegate from localDatetime

easyexcel-core/src/main/java/com/alibaba/excel/converters/DefaultConverterLoader.java

@@ -28,14 +28,17 @@ import com.alibaba.excel.converters.floatconverter.FloatBooleanConverter;
 import com.alibaba.excel.converters.floatconverter.FloatNumberConverter;
 import com.alibaba.excel.converters.floatconverter.FloatStringConverter;
 import com.alibaba.excel.converters.inputstream.InputStreamImageConverter;
+import com.alibaba.excel.converters.instant.InstantDateConverter;
+import com.alibaba.excel.converters.instant.InstantNumberConverter;
+import com.alibaba.excel.converters.instant.InstantStringConverter;
 import com.alibaba.excel.converters.integer.IntegerBooleanConverter;
 import com.alibaba.excel.converters.integer.IntegerNumberConverter;
 import com.alibaba.excel.converters.integer.IntegerStringConverter;
 import com.alibaba.excel.converters.localdate.LocalDateDateConverter;
 import com.alibaba.excel.converters.localdate.LocalDateNumberConverter;
 import com.alibaba.excel.converters.localdate.LocalDateStringConverter;
-import com.alibaba.excel.converters.localdatetime.LocalDateTimeNumberConverter;
 import com.alibaba.excel.converters.localdatetime.LocalDateTimeDateConverter;
+import com.alibaba.excel.converters.localdatetime.LocalDateTimeNumberConverter;
 import com.alibaba.excel.converters.localdatetime.LocalDateTimeStringConverter;
 import com.alibaba.excel.converters.longconverter.LongBooleanConverter;
 import com.alibaba.excel.converters.longconverter.LongNumberConverter;
@@ -88,8 +91,12 @@ public class DefaultConverterLoader {
         putAllConverter(new LocalDateNumberConverter());
         putAllConverter(new LocalDateStringConverter());
 
-        putAllConverter(new LocalDateTimeNumberConverter());
-        putAllConverter(new LocalDateTimeStringConverter());
+        LocalDateTimeNumberConverter localDateTimeNumberConverter = new LocalDateTimeNumberConverter();
+        putAllConverter(localDateTimeNumberConverter);
+        putAllConverter(new InstantNumberConverter(localDateTimeNumberConverter));
+        LocalDateTimeStringConverter localDateTimeStringConverter = new LocalDateTimeStringConverter();
+        putAllConverter(localDateTimeStringConverter);
+        putAllConverter(new InstantStringConverter(localDateTimeStringConverter));
 
         putAllConverter(new DoubleBooleanConverter());
         putAllConverter(new DoubleNumberConverter());
@@ -124,7 +131,9 @@ public class DefaultConverterLoader {
         putWriteConverter(new BooleanBooleanConverter());
         putWriteConverter(new ByteNumberConverter());
         putWriteConverter(new DateDateConverter());
-        putWriteConverter(new LocalDateTimeDateConverter());
+        LocalDateTimeDateConverter localDateTimeDateConverter = new LocalDateTimeDateConverter();
+        putWriteConverter(localDateTimeDateConverter);
+        putWriteConverter(new InstantDateConverter(localDateTimeDateConverter));
         putWriteConverter(new LocalDateDateConverter());
         putWriteConverter(new DoubleNumberConverter());
         putWriteConverter(new FloatNumberConverter());
@@ -145,7 +154,9 @@ public class DefaultConverterLoader {
         putWriteStringConverter(new ByteStringConverter());
         putWriteStringConverter(new DateStringConverter());
         putWriteStringConverter(new LocalDateStringConverter());
-        putWriteStringConverter(new LocalDateTimeStringConverter());
+        LocalDateTimeStringConverter localDateTimeStringConverter = new LocalDateTimeStringConverter();
+        putWriteStringConverter(localDateTimeStringConverter);
+        putWriteStringConverter(new InstantStringConverter(localDateTimeStringConverter));
         putWriteStringConverter(new DoubleStringConverter());
         putWriteStringConverter(new FloatStringConverter());
         putWriteStringConverter(new IntegerStringConverter());

easyexcel-core/src/main/java/com/alibaba/excel/converters/instant/InstantDateConverter.java

@@ -0,0 +1,38 @@
+package com.alibaba.excel.converters.instant;
+
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+
+import com.alibaba.excel.converters.Converter;
+import com.alibaba.excel.converters.localdatetime.LocalDateTimeDateConverter;
+import com.alibaba.excel.metadata.GlobalConfiguration;
+import com.alibaba.excel.metadata.data.WriteCellData;
+import com.alibaba.excel.metadata.property.ExcelContentProperty;
+
+/**
+ * Instant and date converter
+ * delegate LocalDateTimeDateConverter
+ *
+ * @author gongxuanzhang
+ */
+public class InstantDateConverter implements Converter<Instant> {
+
+    private final LocalDateTimeDateConverter delegate;
+
+    public InstantDateConverter(LocalDateTimeDateConverter delegate) {
+        this.delegate = delegate;
+    }
+
+    @Override
+    public Class<?> supportJavaTypeKey() {
+        return Instant.class;
+    }
+
+    @Override
+    public WriteCellData<?> convertToExcelData(Instant value, ExcelContentProperty contentProperty,
+        GlobalConfiguration globalConfiguration) throws Exception {
+        LocalDateTime delegateTime = LocalDateTime.ofInstant(value, ZoneId.systemDefault());
+        return delegate.convertToExcelData(delegateTime, contentProperty, globalConfiguration);
+    }
+}

easyexcel-core/src/main/java/com/alibaba/excel/converters/instant/InstantNumberConverter.java

@@ -0,0 +1,53 @@
+package com.alibaba.excel.converters.instant;
+
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+
+import com.alibaba.excel.converters.Converter;
+import com.alibaba.excel.converters.localdatetime.LocalDateTimeNumberConverter;
+import com.alibaba.excel.enums.CellDataTypeEnum;
+import com.alibaba.excel.metadata.GlobalConfiguration;
+import com.alibaba.excel.metadata.data.ReadCellData;
+import com.alibaba.excel.metadata.data.WriteCellData;
+import com.alibaba.excel.metadata.property.ExcelContentProperty;
+
+/**
+ * instant and number converter
+ * decorate LocalDateTimeNumber
+ *
+ * @author gongxuanzhangmelt@gmail.com
+ */
+public class InstantNumberConverter implements Converter<Instant> {
+
+    private final LocalDateTimeNumberConverter delegateConverter;
+
+    public InstantNumberConverter(LocalDateTimeNumberConverter delegateConverter) {
+        this.delegateConverter = delegateConverter;
+    }
+
+    @Override
+    public Class<?> supportJavaTypeKey() {
+        return Instant.class;
+    }
+
+    @Override
+    public CellDataTypeEnum supportExcelTypeKey() {
+        return CellDataTypeEnum.NUMBER;
+    }
+
+    @Override
+    public Instant convertToJavaData(ReadCellData<?> cellData, ExcelContentProperty contentProperty,
+        GlobalConfiguration globalConfiguration) {
+        LocalDateTime localDateTime = delegateConverter.convertToJavaData(cellData, contentProperty,
+            globalConfiguration);
+        return localDateTime.atZone(ZoneId.systemDefault()).toInstant();
+    }
+
+    @Override
+    public WriteCellData<?> convertToExcelData(Instant value, ExcelContentProperty contentProperty,
+        GlobalConfiguration globalConfiguration) {
+        LocalDateTime delegateTime = LocalDateTime.ofInstant(value, ZoneId.systemDefault());
+        return delegateConverter.convertToExcelData(delegateTime, contentProperty, globalConfiguration);
+    }
+}

easyexcel-core/src/main/java/com/alibaba/excel/converters/instant/InstantStringConverter.java

@@ -0,0 +1,53 @@
+package com.alibaba.excel.converters.instant;
+
+import java.text.ParseException;
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+
+import com.alibaba.excel.converters.Converter;
+import com.alibaba.excel.converters.localdatetime.LocalDateTimeStringConverter;
+import com.alibaba.excel.enums.CellDataTypeEnum;
+import com.alibaba.excel.metadata.GlobalConfiguration;
+import com.alibaba.excel.metadata.data.ReadCellData;
+import com.alibaba.excel.metadata.data.WriteCellData;
+import com.alibaba.excel.metadata.property.ExcelContentProperty;
+
+/**
+ * Instant and string converter
+ * delegate LocalDateTimeStringConverter
+ *
+ * @author gongxuanzhang
+ */
+public class InstantStringConverter implements Converter<Instant> {
+
+    private final LocalDateTimeStringConverter delegate;
+
+    public InstantStringConverter(LocalDateTimeStringConverter localDateTimeStringConverter) {
+        delegate = localDateTimeStringConverter;
+    }
+
+    @Override
+    public Class<?> supportJavaTypeKey() {
+        return Instant.class;
+    }
+
+    @Override
+    public CellDataTypeEnum supportExcelTypeKey() {
+        return CellDataTypeEnum.STRING;
+    }
+
+    @Override
+    public Instant convertToJavaData(ReadCellData<?> cellData, ExcelContentProperty contentProperty,
+        GlobalConfiguration globalConfiguration) throws ParseException {
+        LocalDateTime localDateTime = delegate.convertToJavaData(cellData, contentProperty, globalConfiguration);
+        return localDateTime.atZone(ZoneId.systemDefault()).toInstant();
+    }
+
+    @Override
+    public WriteCellData<?> convertToExcelData(Instant value, ExcelContentProperty contentProperty,
+        GlobalConfiguration globalConfiguration) {
+        LocalDateTime delegateTime = LocalDateTime.ofInstant(value, ZoneId.systemDefault());
+        return delegate.convertToExcelData(delegateTime, contentProperty, globalConfiguration);
+    }
+}

easyexcel-test/src/test/java/com/alibaba/easyexcel/test/core/converter/ConverterDataListener.java

@@ -33,6 +33,7 @@ public class ConverterDataListener extends AnalysisEventListener<ConverterReadDa
         Assertions.assertEquals(TestUtil.TEST_DATE, data.getDate());
         Assertions.assertEquals(TestUtil.TEST_LOCAL_DATE, data.getLocalDate());
         Assertions.assertEquals(TestUtil.TEST_LOCAL_DATE_TIME, data.getLocalDateTime());
+        Assertions.assertEquals(TestUtil.TEST_LOCAL_INSTANT, data.getInstant());
         Assertions.assertEquals(data.getBooleanData(), Boolean.TRUE);
         Assertions.assertEquals(data.getBigDecimal().doubleValue(), BigDecimal.ONE.doubleValue(), 0.0);
         Assertions.assertEquals(data.getBigInteger().intValue(), BigInteger.ONE.intValue(), 0.0);

easyexcel-test/src/test/java/com/alibaba/easyexcel/test/core/converter/ConverterDataTest.java

@@ -55,6 +55,7 @@ public class ConverterDataTest {
     }
 
     private void readAndWrite(File file) throws Exception {
+        file = new File("aaa.xlsx");
         EasyExcel.write(file, ConverterWriteData.class).sheet().doWrite(data());
         EasyExcel.read(file, ConverterReadData.class, new ConverterDataListener()).sheet().doRead();
     }
@@ -115,6 +116,7 @@ public class ConverterDataTest {
         converterWriteData.setDate(TestUtil.TEST_DATE);
         converterWriteData.setLocalDate(TestUtil.TEST_LOCAL_DATE);
         converterWriteData.setLocalDateTime(TestUtil.TEST_LOCAL_DATE_TIME);
+        converterWriteData.setInstant(TestUtil.TEST_LOCAL_INSTANT);
         converterWriteData.setBooleanData(Boolean.TRUE);
         converterWriteData.setBigDecimal(BigDecimal.ONE);
         converterWriteData.setBigInteger(BigInteger.ONE);

easyexcel-test/src/test/java/com/alibaba/easyexcel/test/core/converter/ConverterReadData.java

@@ -2,6 +2,7 @@ package com.alibaba.easyexcel.test.core.converter;
 
 import java.math.BigDecimal;
 import java.math.BigInteger;
+import java.time.Instant;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.Date;
@@ -26,6 +27,8 @@ public class ConverterReadData {
     private LocalDate localDate;
     @ExcelProperty("本地日期时间")
     private LocalDateTime localDateTime;
+    @ExcelProperty("本地instant")
+    private Instant instant;
     @ExcelProperty("布尔")
     private Boolean booleanData;
     @ExcelProperty("大数")

easyexcel-test/src/test/java/com/alibaba/easyexcel/test/core/converter/ConverterWriteData.java

@@ -2,10 +2,13 @@ package com.alibaba.easyexcel.test.core.converter;
 
 import java.math.BigDecimal;
 import java.math.BigInteger;
+import java.time.Instant;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.Date;
+import java.util.List;
 
+import com.alibaba.excel.EasyExcel;
 import com.alibaba.excel.annotation.ExcelProperty;
 import com.alibaba.excel.metadata.data.WriteCellData;
 
@@ -26,6 +29,8 @@ public class ConverterWriteData {
     private LocalDate localDate;
     @ExcelProperty("本地日期时间")
     private LocalDateTime localDateTime;
+    @ExcelProperty("本地instant")
+    private Instant instant;
     @ExcelProperty("布尔")
     private Boolean booleanData;
     @ExcelProperty("大数")

easyexcel-test/src/test/java/com/alibaba/easyexcel/test/util/TestUtil.java

@@ -1,8 +1,10 @@
 package com.alibaba.easyexcel.test.util;
 
 import java.text.ParseException;
+import java.time.Instant;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
+import java.time.ZoneOffset;
 import java.util.Date;
 
 import com.alibaba.excel.util.DateUtils;
@@ -20,6 +22,8 @@ public class TestUtil {
     public static final Date TEST_DATE;
     public static final LocalDate TEST_LOCAL_DATE = LocalDate.of(2020, 1, 1);
     public static final LocalDateTime TEST_LOCAL_DATE_TIME = LocalDateTime.of(2020, 1, 1, 1, 1, 1);
+    public static final Instant TEST_LOCAL_INSTANT =
+        TEST_LOCAL_DATE_TIME.atZone(ZoneOffset.systemDefault()).toInstant();
 
     static {
         try {