POI(Point of Interest,兴趣点)接口是地理位置服务(Location-Based Services, LBS)的核心组件,负责提供景点、餐厅、酒店、公交站等位置信息的查询、获取与解析能力,POI接口文档作为开发者与API服务之间的“沟通桥梁”,不仅定义了接口的功能边界与调用规范,更直接影响应用开发的效率、稳定性和用户体验,一份高质量的POI接口文档,需兼顾技术专业性、操作易用性与行业合规性,是地理位置服务生态中不可或缺的基础设施。
apache poi什么用
Apache POI是Apache软件基金会的开放源码函式库,POI提供API给Java程式对Microsoft Office格式档案读和写的功能。 结构:HSSF - 提供读写Microsoft Excel格式档案的功能。 XSSF - 提供读写Microsoft Excel OOXML格式档案的功能。 HWPF - 提供读写Microsoft Word格式档案的功能。 HSLF - 提供读写Microsoft PowerPoint格式档案的功能。 HDGF - 提供读写Microsoft Visio格式档案的功能。 创建Excel 文档示例1将演示如何利用Jakarta POI API 创建Excel 文档。 示例1程序如下:import ;import ;import ;import ;import ;public class CreateXL {public static String outputFile=D:\\;public static void main(String argv[]){try{// 创建新的Excel 工作簿HSSFWorkbook workbook = new HSSFWorkbook();// 在Excel工作簿中建一工作表,其名为缺省值// 如要新建一名为效益指标的工作表,其语句为:// HSSFSheet sheet = (效益指标);HSSFSheet sheet = ();// 在索引0的位置创建行(最顶端的行)HSSFRow row = ((short)0);//在索引0的位置创建单元格(左上端)HSSFCell cell = ((short) 0);// 定义单元格为字符串类型(_TYPE_STRING);// 在单元格中输入一些内容(增加值);// 新建一输出文件流FileOutputStream fOut = new FileOutputStream(outputFile);// 把相应的Excel 工作簿存盘(fOut);();// 操作结束,关闭文件();(文件生成...);}catch(Exception e) {(已运行 xlCreate() : + e );}}}读取Excel文档中的数据示例2将演示如何读取Excel文档中的数据。 假定在D盘JTest目录下有一个文件名为的Excel文件。 示例2程序如下:import ;import ;import ;import ;import ;public class ReadXL {public static String fileToBeRead=D:\\;public static void main(String argv[]){try{// 创建对Excel工作簿文件的引用HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(fileToBeRead));// 创建对工作表的引用。 // 本例是按名引用(让我们假定那张表有着缺省名Sheet1)HSSFSheet sheet = (Sheet1);// 也可用getSheetAt(int index)按索引引用,// 在Excel文档中,第一张工作表的缺省索引是0,// 其语句为:HSSFSheet sheet = (0);// 读取左上端单元HSSFRow row = (0);HSSFCell cell = ((short)0);// 输出单元内容,()就是取所在单元的值(左上端单元是: + ());}catch(Exception e) {(已运行xlRead() : + e );}}}设置单元格格式在这里,我们将只介绍一些和格式设置有关的语句,我们假定workbook就是对一个工作簿的引用。 在Java中,第一步要做的就是创建和设置字体和单元格的格式,然后再应用这些格式:1、创建字体,设置其为红色、粗体:HSSFFont font = ();(_RED);(_BOLD);2、创建格式HSSFCellStyle cellStyle= ();(font);3、应用格式HSSFCell cell = ((short) 0);(cellStyle);(_TYPE_STRING);(标题 );处理WORD文档import .*;import ;import ;import ;import ;import ;public class TestPoi {public TestPoi() {}public static void main(String args[]) throws Exception{FileInputStream in = new FileInputStream (D:\\);WordExtRACtor extractor = new WordExtractor();String str = (in);//(the result length is+());(str);}}
poi读取excle文件的机制是什么
We are currently working to support the new Office Open XML file formats, such as XLSX and PPTX, which were introduced in Office for these is currently only available in an svn branch, but we hope to have a full release including it by the summer. People interested should follow the dev list to track POI project consists of APIs for manipulating various file formats based upon Microsofts OLE 2 Compound Document format using pure Java. In short, you can read and write MS Excel files using Java. Soon, youll be able to read and write Word, PowerPoint and Visio files using Java. POI is your Java Excel solution as well as your Java Word solution. However, we have a complete API for porting other OLE 2 Compound Document formats, and welcome others to 2 Compound Document Format based files include most Microsoft Office files such as XLS and DOC as well as MFC serialization API based file this time, nOne of our releases support the new Office Open XML file formats, such as or . Work to support these is in progress, and people interested should follow the dev list. We expect this support to make it into a full release by the a general policy, we try to collaborate as much as possible with other projects to provide this functionality. Examples include: Cocoon for which there are serializers for HSSF; Open with whom we collaborate in documenting the XLS format; and Lucene for which we provide format interpretors. When practical, we donate components directly to those projects for POI-enabling them.
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