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89 lines
3.0 KiB
89 lines
3.0 KiB
7 years ago
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# JAVA解析Excel工具easyexcel
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Java解析、生成Excel比较有名的框架有Apache poi、jxl。但他们都存在一个严重的问题就是非常的耗内存,poi有一套SAX模式的API可以一定程度的解决一些内存溢出的问题,但POI还是有一些缺陷,比如07版Excel解压缩以及解压后存储都是在内存中完成的,内存消耗依然很大。easyexcel重写了poi对07版Excel的解析,能够原本一个3M的excel用POI sax依然需要100M左右内存降低到KB级别,并且再大的excel不会出现内存溢出,03版依赖POI的sax模式。在上层做了模型转换的封装,让使用者更加简单方便
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# 相关文档
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* [关于软件](/abouteasyexcel.md)
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* [快速使用](/quickstart.md)
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* [常见问题](/problem.md)
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* [更新记事](/update.md)
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* [English-README](/easyexcel_en.md)
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# 二方包
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```
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<dependency>
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<groupId>com.alibaba.shared</groupId>
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<artifactId>easyexcel</artifactId>
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<version>{latestVersion}</version>
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</dependency>
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```
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# 最新版本
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## VERSION : 1.2.16
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# 维护者
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姬朋飞(玉霄)
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# 快速开始
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## 读Excel
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```
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public void noModelMultipleSheet() {
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InputStream inputStream = getInputStream("2007NoModelMultipleSheet.xlsx");
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try {
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ExcelReader reader = new ExcelReader(inputStream, ExcelTypeEnum.XLSX, null,
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new AnalysisEventListener<List<String>>() {
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@Override
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public void invoke(List<String> object, AnalysisContext context) {
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System.out.println(
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"当前sheet:" + context.getCurrentSheet().getSheetNo() + " 当前行:" + context.getCurrentRowNum()
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+ " data:" + object);
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}
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@Override
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public void doAfterAllAnalysed(AnalysisContext context) {
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}
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});
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reader.read();
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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try {
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inputStream.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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```
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## 写Excel
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```
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@Test
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public void test1() throws FileNotFoundException {
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OutputStream out = new FileOutputStream("/Users/jipengfei/78.xlsx");
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try {
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ExcelWriter writer = new ExcelWriter(out, ExcelTypeEnum.XLSX);
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//写第一个sheet, sheet1 数据全是List<String> 无模型映射关系
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Sheet sheet1 = new Sheet(1, 0,ExcelPropertyIndexModel.class);
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writer.write(getData(), sheet1);
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writer.finish();
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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try {
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out.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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```
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# 联系我们
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有问题阿里同事可以通过钉钉找到我,阿里外同学可以通过git留言。其他技术非技术相关的也欢迎一起探讨。
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