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Use java. util. Properties to quickly import the configuration file,1. java. util. Properties class inheritance relationship The Properties class indicates a set of persistent Properties. Attributes can be saved to a stream or loaded from a stream. Each key in the attribute

Source: https://blog.csdn.net/seesun2012This is an execl文件导入数据库 operation that uses JXL parsing execl to import a database process 出现了科学计数法 that does not match the data you want to import, and the following are examples and solutions:example after successful import :1, mobile phone number: 15388886666 Scientific counting method:1.54E+102, Number: 123456789000000

Learning GoalsMastering the use of the date classyou can use the Calendar class to get a full dateMastering Date-formatted operationsformat conversion operation for dates that can be used with SimpleDateFormatto write a date-Acquired action classfurther mastering the use of the Calendar classfurther mastering the use of the SimpleDateFormat classThe date class is a more commonly used

Overview and role of 1.package keywords* A: Why should I have a bag* Classify the byte code (. Class)* B: Overview of the Package** C: The role of the package* Package name to be defined in the first line,* Package name. * All classes under this package are visible* Concrete analogy is better, can improve efficiency2. Package Definition and Precautions* A: Define the format of the package* Package name;* Multi-stage pack. Separate* B: Considerations f

? Not_create_mongo_collection:create_mongo_collection_such + string.join (",", collections); }catch (Exception e) {e.printstacktrace (); Logger.error (create_mongo_collection_exception); } return null; }/** * Get mongocollection * @param mongoclient * @param dbName * @param collection * @return * * Public mongocollection　　MONGO used to define the comparison constantspublic enum Mongoconst { GT ("$gt"), LT ("$lt"), GTE ("$gte"), LTE ("$lte"), and

("Coursetype"). Trim (); String Questiontypenameid = new String (Questiontype.getbytes ("iso-8859-1"), "Utf-8"); String Coursetypeid = new String (Coursetype.getbytes ("iso-8859-1"), "Utf-8"); Table headers for Excel tables, map linkedhashmap When the list is converted to the excle parameter fieldmap, it is the exported database field and the Chinese header map in Excle, as follows: /** * The English-Chinese map * * @return which derives the excle of the question returns the properties

Label: This content mainly includes (file upload, excel2003 Data Import Database) Excel Import Database functionality requires JXL JAR package support Here is the front-end test code for file uploads @ Page Language="Java"ContentType="text/html; Charset=utf-8"pageencoding="UTF-8"%> @ taglib Prefix="C"URI="Http://java.sun.com/jsp/jstl/core"%> DOCTYPE HTML PUB

Package com.duosen.gate.test;Import Java.io.File;Import Java.io.FileInputStream;Import java.io.FileNotFoundException;Import java.io.IOException;Import JXL. Sheet;Import JXL. Workbook;Import