Apache POI is a free open source cross-platform Java Api,apache poi written in Java that provides the Java program with the ability to read and write to Microsoft Office format archives. The POI is an acronym for "Poor Obfuscation implementation", meaning "poor fuzzy implementation."Apache POI is a Java API that create
Many times, a software application needs to generate a report in Microsoft Excel file format. Sometimes, an application might even want to use an Excel file as input data. For example, an application developed by a company will need all the output from the Finance department to generate its own Excel.Any Java programmer willing to use the output of MS Office files can be done using pre-defined and read-only APIs.What is Apache POI?Apache
Java uses poi to import data in the database to Excel
Effect:
Import the poi package to the path of the project before use. Note that you only need to import the poi package. After downloading the package, there are three jar packages.
Core code:
Connect to the database: DBConnection. java
Copy codeThe Code is as follows: package org. xg. db;
Import java. SQL. C
Office software has always been a mixed blessing software, the vast majority of ordinary computer users with Office to meet day-to-day office needs, so produced a lot of production data and documents, and enterprise units of the dedicated Office system docking, and office parsing work has been a very headache programmers, Often incur the abuse of programmers, but also known as one of Microsoft's worst inventions. Poi's birth solved the Excel parsing problem (
Purpose: Crawl all secondary data in the Kunming range, including name, coordinates.First into the basic, this article mainly on the principle, and the realization of step decomposition, for the Python code to lay the groundwork for writing.Since it is the foundation of the 0, it will be more detailed.As the realization of the purpose, crawling all the data of Kunming City, is to obtain the Baidu map on the Kunming range of all key words with secondary school Geographic information data (points
In the first section of the POI, we provide two simple examples of how to create a new workbook with Apache Poi, and another example is to create a new worksheet with Apache POI. So in this section, I'll show you how to insert a new row of data into an existing Excel file using Apache poi. For specific code, see the ex
In the first section of the poi, we provide two simple examples of how to create a new workbook with Apache poi, and another example is to create a new worksheet with Apache Poi. So in this section, i'll show you how to insert a new row of data into an existing Excel file using Apache Poi. For specific code, See the ex
Java operation Excel file, there are two tools can be used, one is JXL, one is poi. Recently made the requirement to use to POI, so this article describes the use of POI (currently only describes writing Excel files).First, IntroductionJakarta POI is a subproject of Apache, with the goal of processing Ole2 objects. It
In actual projects, the function of exporting data to excel is often available. In the previous stage, I studied how to export data from poi to excel and organized an export tool class. I will paste the code below, learn from each other!
Tool
Import Java. io. outputstream; import java.net. urlencoder; import javax. servlet. HTTP. httpservletresponse; import Org. apache. poi. hssf. usermodel. hssfcell; impor
Poi export excel and poiexcel
I. Introduction
HSSF is the implementation of POI project's pure Java Excel97 (-2007) file format. XSSF is a Java implementation of the POI project Excel 2007 OOXML (.xlsx) file format. HSSF and XSSF provides multiple ways to read from, create, modify, read, and write workbooks.
It provides the following functions:
Provides a low-l
Introduction: In Java, the use of POI to read and parse Excel is a common practice; there are 2007,2003 two different formats in Office Excel, often differentiated by different suffixes of xls/xlsx, but users may not know the difference, Therefore, there will be an incompatible format exception1. POIPoi originates from the Apache Foundation, is its top-level domain project, and POI provides APIs to Java pro
Java programming to achieve the operation of Word without VB that programming language easy to come by some open source components, including Jacob, Poi and so on, and poi most widely used, word2003 and 2007 of the read and write word operations are very convenient. It's an Apache project that has already released its first version as early as 2001, an old Apache project that has now gone through 10 years,
Prior to opening the POI classification already existed three articles introduced the use of POI and the flow of the download, the recent project found before the use of defects, today to do a summary, from now on we can ignore the first three articles on the use of POI, but the flow of the load mode can be referred to, here or again to mention a pen, Streaming d
action, it is a singleton by default. Every time we refresh or call it, we put it in our fielderror map, so more and more errors will be displayed.When the request range of action is prototype, Spring dynamically creates an action instance.We can implement the validate method in the action to obtain FieldErrors and print it to find out the cause.@ Override@ SuppressWarnings ("unchecked ")Public void validate (){Map map = this. getFieldErrors ();Set set = map. keySet ();Iterator iterator = set.
Example of jsp using POI to generate an Excel file and export it on the page, poiexcel
In java, Excel can be exported using two components: jxl, POI, and POI. You can generate a file on the server and download it. You can also use the output stream to directly display a dialog box on the webpage prompting you to save or download the file. The file generation meth
Previously, only the positioning function and the function of searching the surrounding poi were implemented, so such a program can only be a demo of the toys program.The actual purpose should be to locate the location of my current device and search for poi around me based on the location.Although I have provided two complete examples in theory, but in actual implementation, I found that the positioning lo
In the current project, a function is to import data from the Excel table to sqlserver2000, and the development language is Java. It has been found online for a long time, finally, we can see that poi, an open-source project of Apache, has such a function implementation. If anyone uses C # To implement this function, I hope to share it with you.
Why poi?A very frustrating fact is that it is difficult to in
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