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BAT script batch changes file names

The steps to use bat batch processing to modify file names in batches are as follows: 1. Open Notepad or other text editors; 2. Copy and paste the above example script into the text editor; 3. Replace "oldname" with the characters you want to search for. string; 4. Replace "newname" with the string to be replaced; 5. Save the file as a .bat file; 6. Double-click the .bat file to execute the script.

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java sql mybatis batch insert batch update improve efficiency battlelan repair win system problems Run error fix mybatis-plus crud mysql springboot

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BAT script batch changes file names

Using MyBatis for SQL mapping in Java API development

Using MyBatis for SQL mapping in JavaAPI development In JavaWeb development, we often need to perform data reading and writing operations by calling the database API. However, it is very cumbersome to directly use the JDBC (Java Database Connectivity) API to operate data, requiring manual writing of SQL statements, processing of database connections, result sets, etc. These trivial tasks not only greatly reduce the developer's work efficiency, but also increase the readability and maintainability of the code.

Jun 18, 2023 am 08:45 AM

java sql mybatis

How to use batch insert and batch update in MySQL to improve efficiency?

How to use batch insert and batch update in MySQL to improve efficiency? Introduction: MySQL is a widely used relational database management system. For scenarios where large amounts of data are processed, it is very important to improve the efficiency of insertion and update. This article will detail how to use batch inserts and batch updates in MySQL to improve efficiency, with code examples. 1. Batch insert Batch insert refers to inserting multiple records into the table at one time. Compared with single insert, batch insert can significantly reduce the number of communications and improve insertion efficiency.

Jul 31, 2023 pm 08:40 PM

batch insert batch update improve efficiency

How to fix BattleLAN not running on Win7 system

How to fix BattleLAN failure in win7 system? As the usage of computers becomes higher and higher, we may sometimes encounter the problem that BattleLAN cannot run in win7 system. If we encounter the problem that BattleLAN in win7 system cannot run, how to solve the problem that BattleLAN in win7 system cannot run? Many friends don’t know how to operate in detail. The editor below has compiled the repair steps for BattleLAN not running on win7 system. If you are interested, follow the editor and take a look below! Steps to fix BattleLAN not running on Windows 7 system Netizen question: I recently installed Windows 7 system.

Jun 30, 2023 pm 12:02 PM

battlelan repair win system problems Run error fix

Using MyBatis-Plus for CRUD processing in Java API development

As the scale of websites continues to expand, Java developers increasingly need to handle a large number of database operations. Faced with this situation, if you use traditional SQL statements for development, it is easy to have duplicate and redundant codes. If you use a framework for development, you can avoid these problems. Among them, MyBatis-Plus is a very popular framework that can be used for CRUD processing in Java API development. In this article, we will explain in detail how to use MyB

Jun 18, 2023 am 08:03 AM

java mybatis-plus crud

How to use full-text search under mysql+mybatis

The first step is to click the full text search fulltext type index on the column you need to search for full text. Note that in my example, the column is a longText type column. The first step is to create a fulltext type index as shown below. The index type is selected as fulltext. The second step is to verify the full text. Is it easy to search sql? The third step: I use the mybatis framework, change the automatically generated example condition settings and mapper. This is how you use the full-text search syntax. Note m

May 29, 2023 pm 01:34 PM

mysql mybatis

How to use the second-level cache of Mybatis in Java

Overview and classification of cache. A cache is a piece of memory space. Why use a cache to save temporary data? Read the data from the data source (database or file) and store it in the cache. When you obtain it again, you can obtain it directly from the cache, which can reduce The number of interactions with the database can improve the performance of the program! The application of caching is suitable for caching: frequently queried but not frequently modified (eg: provinces, cities, category data), the accuracy of the data has little impact on the final results Not suitable for caching: frequently changing data, sensitive data (for example: stock market prices, bank exchange rates, money in bank cards), etc. MyBatis cache category first-level cache: It is the cache of the sqlSession object, and comes with it ( No configuration required) No

May 24, 2023 pm 06:16 PM

java mybatis

How to implement Springboot+Mybatis-plus without using SQL statements to add multiple tables

When Springboot+Mybatis-plus does not use SQL statements to perform multi-table adding operations, the problems I encountered are decomposed by simulating thinking in the test environment: Create a BrandDTO object with parameters to simulate passing parameters to the background. We all know that it is extremely difficult to perform multi-table operations in Mybatis-plus. If you do not use tools such as Mybatis-plus-join, you can only configure the corresponding Mapper.xml file and configure The smelly and long ResultMap, and then write the corresponding sql statement. Although this method seems cumbersome, it is highly flexible and allows us to

Jun 02, 2023 am 11:07 AM

sql springboot mybatis-plus