指标公式计算方式

ims-service/ims-eval/src/main/java/com/ims/eval/schedule/ScoreCalculationSchedule.java

@@ -10,10 +10,15 @@ import com.ims.eval.expression.*;
 import com.ims.eval.service.IEvaluationScoreCountService;
 import com.ims.eval.util.MathCalculatorUtil;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.poi.hssf.usermodel.*;
+import org.apache.poi.ss.formula.FormulaParseException;
+import org.apache.poi.ss.usermodel.CellType;
+import org.apache.poi.ss.usermodel.FormulaEvaluator;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.scheduling.annotation.EnableScheduling;
 import org.springframework.stereotype.Component;
 
+import java.math.BigDecimal;
 import java.util.*;
 import java.util.stream.Collectors;
 
@@ -55,6 +60,14 @@ public class ScoreCalculationSchedule {
 	private OrganizationEvaluationRuleMapper organizationEvaluationRuleMapper;
 
 
+	/**
+	 * Sheet 中的每一行
+	 */
+	private static HSSFRow row = null;
+
+	private static FormulaEvaluator formulaEvaluator = null;
+
+
 	public boolean doTask(String id){
 
 		boolean save = true;
@@ -335,4 +348,36 @@ public class ScoreCalculationSchedule {
 
 	}*/
 
+
+
+	/**
+	 * 计算值
+	 *
+	 * @param formula Excel 中的公式，例如：MAX(56-FLOOR(20/6,1),2)
+	 * @return
+	 */
+	public static double caculateFormula(String formula) {
+		if(formula.startsWith("=")){
+			formula =formula.replace("=","");
+		}
+		HSSFWorkbook workbook = new HSSFWorkbook();
+		HSSFSheet sheet = workbook.createSheet();
+		row = sheet.createRow(0);
+		formulaEvaluator = new HSSFFormulaEvaluator(workbook);
+
+		// 这里必须新建一个对象，否则只有第一个 formula 才有效。查看 formulaEvaluator.evaluate 的源码。
+		HSSFCell cell = row.createCell(0);
+		cell.setCellType(CellType.FORMULA);
+		try {
+			cell.setCellFormula(formula);
+			double value = formulaEvaluator.evaluate(cell).getNumberValue();
+			return new BigDecimal(value).setScale(2, BigDecimal.ROUND_CEILING).doubleValue();
+		} catch (FormulaParseException e) {
+			System.out.print(e.getMessage());
+			return 0;
+		}
+	}
+
+
+
 }