forked from fanruan/easyexcel
Jiaju Zhuang
5 years ago
22 changed files with 297 additions and 65 deletions
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package com.alibaba.easyexcel.test.temp.poi; |
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import java.io.FileOutputStream; |
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import java.io.IOException; |
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import java.lang.reflect.Field; |
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import java.lang.reflect.ParameterizedType; |
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import java.lang.reflect.Type; |
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import org.apache.poi.ss.formula.functions.T; |
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import org.apache.poi.xssf.streaming.SXSSFCell; |
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import org.apache.poi.xssf.streaming.SXSSFRow; |
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import org.apache.poi.xssf.streaming.SXSSFSheet; |
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import org.apache.poi.xssf.streaming.SXSSFWorkbook; |
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import org.junit.Ignore; |
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import org.junit.Test; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import com.alibaba.excel.metadata.CellData; |
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import sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl; |
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/** |
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* 测试poi |
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* |
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* @author Jiaju Zhuang |
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**/ |
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@Ignore |
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public class PoiWriteTest { |
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private static final Logger LOGGER = LoggerFactory.getLogger(PoiWriteTest.class); |
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@Test |
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public void write() throws IOException { |
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FileOutputStream fileOutputStream = new FileOutputStream("D://test//tt12.xlsx"); |
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SXSSFWorkbook sxxsFWorkbook = new SXSSFWorkbook(); |
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SXSSFSheet sheet = sxxsFWorkbook.createSheet("t1"); |
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SXSSFRow row = sheet.createRow(0); |
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SXSSFCell cell1 = row.createCell(0); |
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cell1.setCellValue(1); |
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SXSSFCell cell2 = row.createCell(1); |
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cell2.setCellValue(1); |
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SXSSFCell cell3 = row.createCell(2); |
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cell3.setCellFormula("=A1+B1"); |
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sxxsFWorkbook.write(fileOutputStream); |
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} |
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@Test |
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public void test() throws Exception { |
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Class<TestCell> clazz = TestCell.class; |
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Field field = clazz.getDeclaredField("c2"); |
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// 通过getDeclaredField可以获得成员变量，但是对于Map来说，仅仅可以知道它是个Map，无法知道键值对各自的数据类型
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Type gType = field.getGenericType(); |
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// 获得field的泛型类型
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// 如果gType是ParameterizedType对象（参数化）
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if (gType instanceof ParameterizedType) { |
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ParameterizedType pType = (ParameterizedType)gType; |
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// 就把它转换成ParameterizedType对象
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Type[] tArgs = pType.getActualTypeArguments(); |
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// 获得泛型类型的泛型参数（实际类型参数)
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ParameterizedTypeImpl c = (ParameterizedTypeImpl)pType.getActualTypeArguments()[0]; |
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Class ttt = c.getRawType(); |
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System.out.println(ttt); |
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} else { |
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System.out.println("出错！！！"); |
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} |
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} |
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@Test |
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public void test2() throws Exception { |
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Class<TestCell> clazz = TestCell.class; |
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Field field = clazz.getDeclaredField("c2"); |
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// 通过getDeclaredField可以获得成员变量，但是对于Map来说，仅仅可以知道它是个Map，无法知道键值对各自的数据类型
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Type gType = field.getGenericType(); |
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// 获得field的泛型类型
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// 如果gType是ParameterizedType对象（参数化）
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if (gType instanceof ParameterizedType) { |
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ParameterizedType pType = (ParameterizedType)gType; |
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// 就把它转换成ParameterizedType对象
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Type[] tArgs = pType.getActualTypeArguments(); |
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// 获得泛型类型的泛型参数（实际类型参数)
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ParameterizedTypeImpl c = (ParameterizedTypeImpl)pType.getActualTypeArguments()[0]; |
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Class ttt = c.getRawType(); |
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System.out.println(ttt); |
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} else { |
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System.out.println("出错！！！"); |
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} |
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} |
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} |
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@ -0,0 +1,18 @@
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package com.alibaba.easyexcel.test.temp.poi; |
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import java.util.List; |
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import com.alibaba.excel.metadata.CellData; |
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import lombok.Data; |
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/** |
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* TODO |
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* |
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* @author 罗成 |
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**/ |
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@Data |
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public class TestCell { |
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private CellData c1; |
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private CellData<List<String>> c2; |
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} |
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