fix bugs
This commit is contained in:
29
blade-starter-excel/pom.xml
Normal file
29
blade-starter-excel/pom.xml
Normal file
@@ -0,0 +1,29 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<artifactId>BladeX-Tool</artifactId>
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<groupId>org.springblade</groupId>
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<version>${revision}</version>
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</parent>
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<artifactId>blade-starter-excel</artifactId>
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<name>${project.artifactId}</name>
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<version>${project.parent.version}</version>
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<packaging>jar</packaging>
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<dependencies>
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<dependency>
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<groupId>org.springblade</groupId>
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<artifactId>blade-core-launch</artifactId>
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</dependency>
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<dependency>
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<groupId>com.alibaba</groupId>
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<artifactId>easyexcel</artifactId>
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</dependency>
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</dependencies>
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</project>
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@@ -0,0 +1,60 @@
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/**
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* BladeX Commercial License Agreement
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* Copyright (c) 2018-2099, https://bladex.cn. All rights reserved.
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* <p>
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* Use of this software is governed by the Commercial License Agreement
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* obtained after purchasing a license from BladeX.
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* <p>
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* 1. This software is for development use only under a valid license
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* from BladeX.
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* <p>
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* 2. Redistribution of this software's source code to any third party
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* without a commercial license is strictly prohibited.
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* <p>
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* 3. Licensees may copyright their own code but cannot use segments
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* from this software for such purposes. Copyright of this software
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* remains with BladeX.
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* <p>
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* Using this software signifies agreement to this License, and the software
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* must not be used for illegal purposes.
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* <p>
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* THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY. The author is
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* not liable for any claims arising from secondary or illegal development.
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* <p>
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* Author: Chill Zhuang (bladejava@qq.com)
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*/
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package org.springblade.core.excel.listener;
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import com.alibaba.excel.context.AnalysisContext;
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import com.alibaba.excel.event.AnalysisEventListener;
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import lombok.EqualsAndHashCode;
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import lombok.Getter;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* Excel监听器
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*
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* @author Chill
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*/
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@Getter
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@EqualsAndHashCode(callSuper = true)
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public class DataListener<T> extends AnalysisEventListener<T> {
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/**
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* 缓存的数据列表
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*/
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private final List<T> dataList = new ArrayList<>();
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@Override
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public void invoke(T data, AnalysisContext analysisContext) {
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dataList.add(data);
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}
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@Override
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public void doAfterAllAnalysed(AnalysisContext analysisContext) {
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}
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}
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@@ -0,0 +1,81 @@
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/**
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* BladeX Commercial License Agreement
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* Copyright (c) 2018-2099, https://bladex.cn. All rights reserved.
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* <p>
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* Use of this software is governed by the Commercial License Agreement
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* obtained after purchasing a license from BladeX.
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* <p>
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* 1. This software is for development use only under a valid license
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* from BladeX.
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* <p>
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* 2. Redistribution of this software's source code to any third party
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* without a commercial license is strictly prohibited.
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* <p>
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* 3. Licensees may copyright their own code but cannot use segments
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* from this software for such purposes. Copyright of this software
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* remains with BladeX.
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* <p>
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* Using this software signifies agreement to this License, and the software
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* must not be used for illegal purposes.
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* <p>
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* THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY. The author is
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* not liable for any claims arising from secondary or illegal development.
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* <p>
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* Author: Chill Zhuang (bladejava@qq.com)
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*/
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package org.springblade.core.excel.listener;
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import com.alibaba.excel.context.AnalysisContext;
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import com.alibaba.excel.event.AnalysisEventListener;
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import lombok.Data;
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import lombok.EqualsAndHashCode;
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import lombok.RequiredArgsConstructor;
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import org.springblade.core.excel.support.ExcelImporter;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* Excel监听器
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*
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* @author Chill
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*/
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@Data
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@RequiredArgsConstructor
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@EqualsAndHashCode(callSuper = true)
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public class ImportListener<T> extends AnalysisEventListener<T> {
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/**
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* 默认每隔3000条存储数据库
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*/
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private int batchCount = 3000;
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/**
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* 缓存的数据列表
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*/
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private List<T> list = new ArrayList<>();
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/**
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* 数据导入类
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*/
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private final ExcelImporter<T> importer;
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@Override
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public void invoke(T data, AnalysisContext analysisContext) {
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list.add(data);
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// 达到BATCH_COUNT，则调用importer方法入库，防止数据几万条数据在内存，容易OOM
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if (list.size() >= batchCount) {
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// 调用importer方法
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importer.save(list);
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// 存储完成清理list
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list.clear();
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}
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}
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@Override
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public void doAfterAllAnalysed(AnalysisContext analysisContext) {
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// 调用importer方法
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importer.save(list);
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// 存储完成清理list
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list.clear();
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}
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}
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@@ -0,0 +1,42 @@
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/**
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* BladeX Commercial License Agreement
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* Copyright (c) 2018-2099, https://bladex.cn. All rights reserved.
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* <p>
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* Use of this software is governed by the Commercial License Agreement
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* obtained after purchasing a license from BladeX.
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* <p>
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* 1. This software is for development use only under a valid license
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* from BladeX.
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* <p>
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* 2. Redistribution of this software's source code to any third party
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* without a commercial license is strictly prohibited.
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* <p>
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* 3. Licensees may copyright their own code but cannot use segments
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* from this software for such purposes. Copyright of this software
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* remains with BladeX.
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* <p>
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* Using this software signifies agreement to this License, and the software
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* must not be used for illegal purposes.
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* <p>
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* THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY. The author is
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* not liable for any claims arising from secondary or illegal development.
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* <p>
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* Author: Chill Zhuang (bladejava@qq.com)
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*/
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package org.springblade.core.excel.support;
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import java.io.Serial;
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/**
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* Excel异常处理类
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*
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* @author Chill
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*/
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public class ExcelException extends RuntimeException {
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@Serial
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private static final long serialVersionUID = 1L;
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public ExcelException(String message) {
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super(message);
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}
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}
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@@ -0,0 +1,44 @@
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/**
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* BladeX Commercial License Agreement
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* Copyright (c) 2018-2099, https://bladex.cn. All rights reserved.
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* <p>
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* Use of this software is governed by the Commercial License Agreement
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* obtained after purchasing a license from BladeX.
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* <p>
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* 1. This software is for development use only under a valid license
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* from BladeX.
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* <p>
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* 2. Redistribution of this software's source code to any third party
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* without a commercial license is strictly prohibited.
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* <p>
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* 3. Licensees may copyright their own code but cannot use segments
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* from this software for such purposes. Copyright of this software
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* remains with BladeX.
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* <p>
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* Using this software signifies agreement to this License, and the software
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* must not be used for illegal purposes.
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* <p>
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* THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY. The author is
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* not liable for any claims arising from secondary or illegal development.
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* <p>
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* Author: Chill Zhuang (bladejava@qq.com)
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*/
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package org.springblade.core.excel.support;
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import java.util.List;
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/**
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* Excel统一导入接口
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*
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* @author Chill
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*/
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public interface ExcelImporter<T> {
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/**
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* 导入数据逻辑
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*
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* @param data 数据集合
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*/
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void save(List<T> data);
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}
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@@ -0,0 +1,197 @@
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/**
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* BladeX Commercial License Agreement
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* Copyright (c) 2018-2099, https://bladex.cn. All rights reserved.
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* <p>
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* Use of this software is governed by the Commercial License Agreement
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* obtained after purchasing a license from BladeX.
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* <p>
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* 1. This software is for development use only under a valid license
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* from BladeX.
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* <p>
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* 2. Redistribution of this software's source code to any third party
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* without a commercial license is strictly prohibited.
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* <p>
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* 3. Licensees may copyright their own code but cannot use segments
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* from this software for such purposes. Copyright of this software
|
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* remains with BladeX.
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* <p>
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* Using this software signifies agreement to this License, and the software
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* must not be used for illegal purposes.
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* <p>
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* THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY. The author is
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* not liable for any claims arising from secondary or illegal development.
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* <p>
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* Author: Chill Zhuang (bladejava@qq.com)
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*/
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package org.springblade.core.excel.util;
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import com.alibaba.excel.EasyExcel;
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import com.alibaba.excel.read.builder.ExcelReaderBuilder;
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import com.alibaba.excel.read.listener.ReadListener;
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import com.alibaba.excel.util.DateUtils;
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import com.alibaba.excel.write.builder.ExcelWriterBuilder;
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import com.alibaba.excel.write.handler.WriteHandler;
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import jakarta.servlet.http.HttpServletResponse;
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import lombok.SneakyThrows;
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import org.springblade.core.excel.listener.DataListener;
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import org.springblade.core.excel.listener.ImportListener;
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import org.springblade.core.excel.support.ExcelException;
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import org.springblade.core.excel.support.ExcelImporter;
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import org.springframework.util.StringUtils;
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import org.springframework.web.multipart.MultipartFile;
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import java.io.BufferedInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.URLEncoder;
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import java.nio.charset.StandardCharsets;
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import java.util.Date;
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import java.util.List;
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/**
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* Excel工具类
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*
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* @author Chill
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* @apiNote https://easyexcel.opensource.alibaba.com/
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*/
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public class ExcelUtil {
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/**
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* 读取excel的所有sheet数据
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*
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* @param excel excel文件
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* @return List<Object>
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*/
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public static <T> List<T> read(MultipartFile excel, Class<T> clazz) {
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DataListener<T> dataListener = new DataListener<>();
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ExcelReaderBuilder builder = getReaderBuilder(excel, dataListener, clazz);
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if (builder == null) {
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return null;
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}
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builder.doReadAll();
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return dataListener.getDataList();
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}
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/**
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* 读取excel的指定sheet数据
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*
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* @param excel excel文件
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* @param sheetNo sheet序号(从0开始)
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* @return List<Object>
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*/
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public static <T> List<T> read(MultipartFile excel, int sheetNo, Class<T> clazz) {
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return read(excel, sheetNo, 1, clazz);
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}
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/**
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* 读取excel的指定sheet数据
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*
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* @param excel excel文件
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* @param sheetNo sheet序号(从0开始)
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* @param headRowNumber 表头行数
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* @return List<Object>
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*/
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public static <T> List<T> read(MultipartFile excel, int sheetNo, int headRowNumber, Class<T> clazz) {
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DataListener<T> dataListener = new DataListener<>();
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ExcelReaderBuilder builder = getReaderBuilder(excel, dataListener, clazz);
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if (builder == null) {
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return null;
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}
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builder.sheet(sheetNo).headRowNumber(headRowNumber).doRead();
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return dataListener.getDataList();
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}
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/**
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* 读取并导入数据
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*
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* @param excel excel文件
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* @param importer 导入逻辑类
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* @param <T> 泛型
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*/
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public static <T> void save(MultipartFile excel, ExcelImporter<T> importer, Class<T> clazz) {
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ImportListener<T> importListener = new ImportListener<>(importer);
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ExcelReaderBuilder builder = getReaderBuilder(excel, importListener, clazz);
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if (builder != null) {
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builder.doReadAll();
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}
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}
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/**
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* 导出excel
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*
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* @param response 响应类
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* @param dataList 数据列表
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* @param clazz class类
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* @param <T> 泛型
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*/
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@SneakyThrows
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public static <T> void export(HttpServletResponse response, List<T> dataList, Class<T> clazz) {
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export(response, DateUtils.format(new Date(), DateUtils.DATE_FORMAT_14), "导出数据", dataList, clazz);
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}
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/**
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* 导出excel
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*
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* @param response 响应类
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* @param fileName 文件名
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* @param sheetName sheet名
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* @param dataList 数据列表
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* @param clazz class类
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* @param <T> 泛型
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*/
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@SneakyThrows
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public static <T> void export(HttpServletResponse response, String fileName, String sheetName, List<T> dataList, Class<T> clazz) {
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export(response, DateUtils.format(new Date(), DateUtils.DATE_FORMAT_14), "导出数据", dataList, null, clazz);
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}
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/**
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* 导出excel
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*
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* @param response 响应类
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* @param fileName 文件名
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* @param sheetName sheet名
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* @param dataList 数据列表
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* @param clazz class类
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* @param writeHandler 自定义处理器
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* @param <T> 泛型
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*/
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@SneakyThrows
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public static <T> void export(HttpServletResponse response, String fileName, String sheetName, List<T> dataList, WriteHandler writeHandler, Class<T> clazz) {
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response.setContentType("application/vnd.ms-excel");
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response.setCharacterEncoding(StandardCharsets.UTF_8.name());
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fileName = URLEncoder.encode(fileName, StandardCharsets.UTF_8);
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response.setHeader("Content-disposition", "attachment;filename=" + fileName + ".xlsx");
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ExcelWriterBuilder write = EasyExcel.write(response.getOutputStream(), clazz);
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if (writeHandler != null) {
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write.registerWriteHandler(writeHandler);
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}
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write.sheet(sheetName).doWrite(dataList);
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}
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/**
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* 获取构建类
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*
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* @param excel excel文件
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* @param readListener excel监听类
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* @return ExcelReaderBuilder
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*/
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public static <T> ExcelReaderBuilder getReaderBuilder(MultipartFile excel, ReadListener<T> readListener, Class<T> clazz) {
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String filename = excel.getOriginalFilename();
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if (!StringUtils.hasText(filename)) {
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throw new ExcelException("请上传文件!");
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}
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if ((!StringUtils.endsWithIgnoreCase(filename, ".xls") && !StringUtils.endsWithIgnoreCase(filename, ".xlsx"))) {
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throw new ExcelException("请上传正确的excel文件!");
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}
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InputStream inputStream;
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try {
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inputStream = new BufferedInputStream(excel.getInputStream());
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return EasyExcel.read(inputStream, clazz, readListener);
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} catch (IOException e) {
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e.printStackTrace();
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}
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return null;
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}
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}
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Reference in New Issue
Block a user