support validate

pom.xml

@@ -118,6 +118,12 @@
             <version>${jakarta.servlet-api.version}</version>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>org.hibernate.validator</groupId>
+            <artifactId>hibernate-validator</artifactId>
+            <version>6.0.18.Final</version>
+            <scope>provided</scope>
+        </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>

src/main/java/com/github/liaochong/myexcel/core/SaxExcelReader.java

@@ -32,12 +32,17 @@
 import org.apache.poi.poifs.filesystem.FileMagic;
 import org.apache.poi.util.XMLHelper;
 import org.apache.poi.xssf.eventusermodel.XSSFReader;
+import org.hibernate.validator.HibernateValidator;
 import org.slf4j.Logger;
 import org.xml.sax.ContentHandler;
 import org.xml.sax.InputSource;
 import org.xml.sax.SAXException;
 import org.xml.sax.XMLReader;
 
+import javax.validation.ConstraintViolation;
+import javax.validation.Validation;
+import javax.validation.Validator;
+import javax.validation.ValidatorFactory;
 import javax.xml.parsers.ParserConfigurationException;
 import java.io.File;
 import java.io.FileInputStream;
@@ -95,6 +100,8 @@ public SaxExcelReader<T> sheet(String sheetName) {
         return sheets(sheetName);
     }
 
+    public Validator validator;
+
     public SaxExcelReader<T> sheets(Integer... sheetIndexs) {
         this.readConfig.sheetIndexs.clear();
         this.readConfig.sheetIndexs.addAll(Arrays.asList(sheetIndexs));
@@ -183,11 +190,36 @@ public List<T> read(InputStream fileInputStream) {
         return result;
     }
 
+    public ValidationObject<T> validRead(InputStream fileInputStream) {
+        ValidationObject<T> validationObject = new ValidationObject<>();
+        this.readThen(fileInputStream, (t, rowContext) -> {
+            doValidRead(t, rowContext, validationObject);
+        });
+        return validationObject;
+    }
+
     public List<T> read(File file) {
         doRead(file);
         return result;
     }
 
+    public ValidationObject<T> validRead(File file) {
+        ValidationObject<T> validationObject = new ValidationObject<>();
+        this.readThen(file, (t, rowContext) -> {
+            doValidRead(t, rowContext, validationObject);
+        });
+        return validationObject;
+    }
+
+    private void doValidRead(T t, RowContext rowContext, ValidationObject<T> validationObject) {
+        validationObject.getObjects().add(t);
+        Set<ConstraintViolation<T>> violations = validator.validate(t, t.getClass());
+        ValidationObject.ValidationInfo<T> validationInfo = new ValidationObject.ValidationInfo<>();
+        validationInfo.setRowNum(rowContext.getRowNum());
+        validationInfo.setConstraintViolations(violations);
+        validationObject.getValidationInfos().add(validationInfo);
+    }
+
     public void readThen(InputStream fileInputStream, Consumer<T> consumer) {
         this.readConfig.consumer = consumer;
         doRead(fileInputStream);
@@ -266,6 +298,17 @@ public static WorkbookMetaData getWorkbookMetaData(File file) {
         return saxExcelReader.workbookMetaData;
     }
 
+    private synchronized Validator getValidator() {
+        if (validator == null) {
+            ValidatorFactory validatorFactory = Validation
+                    .byProvider(HibernateValidator.class)
+                    .configure()
+                    .buildValidatorFactory();
+            validator = validatorFactory.getValidator();
+        }
+        return validator;
+    }
+
     private void doRead(InputStream fileInputStream) {
         this.doRead(fileInputStream, false);
     }

src/main/java/com/github/liaochong/myexcel/core/ValidationObject.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright 2019 liaochong
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.liaochong.myexcel.core;
+
+import javax.validation.ConstraintViolation;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * @author liaochong
+ * @version 1.0
+ */
+public class ValidationObject<T> {
+
+    private List<T> objects = new LinkedList<>();
+
+    private List<ValidationInfo<T>> validationInfos = new LinkedList<>();
+
+    public List<T> getObjects() {
+        return objects;
+    }
+
+    public void setObjects(List<T> objects) {
+        this.objects = objects;
+    }
+
+    public List<ValidationInfo<T>> getValidationInfos() {
+        return validationInfos;
+    }
+
+    public void setValidationInfos(List<ValidationInfo<T>> validationInfos) {
+        this.validationInfos = validationInfos;
+    }
+
+    public static class ValidationInfo<T> {
+        private int rowNum;
+
+        private Set<ConstraintViolation<T>> constraintViolations;
+
+        public int getRowNum() {
+            return rowNum;
+        }
+
+        public void setRowNum(int rowNum) {
+            this.rowNum = rowNum;
+        }
+
+        public Set<ConstraintViolation<T>> getConstraintViolations() {
+            return constraintViolations;
+        }
+
+        public void setConstraintViolations(Set<ConstraintViolation<T>> constraintViolations) {
+            this.constraintViolations = constraintViolations;
+        }
+    }
+}