Home Database Mysql Tutorial Hibernate不能实时获取MySQL数据库的更新

Hibernate不能实时获取MySQL数据库的更新

Jun 07, 2016 pm 04:45 PM
hibernate

最近项目中使用到了Hibernate,但每次数据库记录有更新后,用hibernate无法查找到更新后的数据。网上查找了许多教程,最终发现通

最近项目中使用到了Hibernate,但每次数据库记录有更新后,用hibernate无法查找到更新后的数据。网上查找了许多教程,最终发现通过更改hibernate的默认连接池可以解决。通过使用c3p0连接池,替换掉hibernate的默认连接池后,就可以查找到MySQL更新后的数据了。

具体修改方法如下:

在hibernate.cfg.xml配置文件中,增加以下内容:

 org.hibernate.connection.C3P0ConnectionProvider
                20 
                5 
                100
                120
                1
                true
                18000
                25000

附上c3p0的jar包,,c3p0库,替换掉hibernate默认连接池后,可以实时访问到MySQL数据库的更新,下载地址:

------------------------------------------分割线------------------------------------------

免费下载地址在

用户名与密码都是

具体下载目录在 /2014年资料/11月/13日/Hibernate不能实时获取MySQL数据库的更新

下载方法见

------------------------------------------分割线------------------------------------------

Hibernate整体理解

Hibernate 的详细介绍:请点这里
Hibernate 的下载地址:请点这里

本文永久更新链接地址:

linux

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
1 months ago By 尊渡假赌尊渡假赌尊渡假赌
Two Point Museum: All Exhibits And Where To Find Them
1 months ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to integrate Hibernate in SpringBoot project How to integrate Hibernate in SpringBoot project May 18, 2023 am 09:49 AM

Integrating Hibernate in SpringBoot Project Preface Hibernate is a popular ORM (Object Relational Mapping) framework that can map Java objects to database tables to facilitate persistence operations. In the SpringBoot project, integrating Hibernate can help us perform database operations more easily. This article will introduce how to integrate Hibernate in the SpringBoot project and provide corresponding examples. 1.Introduce dependenciesIntroduce the following dependencies in the pom.xml file: org.springframework.bootspring-boot-starter-data-jpam

Java Errors: Hibernate Errors, How to Handle and Avoid Java Errors: Hibernate Errors, How to Handle and Avoid Jun 25, 2023 am 09:09 AM

Java is an object-oriented programming language that is widely used in the field of software development. Hibernate is a popular Java persistence framework that provides a simple and efficient way to manage the persistence of Java objects. However, Hibernate errors are often encountered during the development process, and these errors may cause the program to terminate abnormally or become unstable. How to handle and avoid Hibernate errors has become a skill that Java developers must master. This article will introduce some common Hib

What are the differences between hibernate and mybatis What are the differences between hibernate and mybatis Jan 03, 2024 pm 03:35 PM

The differences between hibernate and mybatis: 1. Implementation method; 2. Performance; 3. Comparison of object management; 4. Caching mechanism. Detailed introduction: 1. Implementation method, Hibernate is a complete object/relational mapping solution that maps objects to database tables, while MyBatis requires developers to manually write SQL statements and ResultMap; 2. Performance, Hibernate is possible in terms of development speed Faster than MyBatis because Hibernate simplifies the DAO layer and so on.

What is the mapping method of one-to-many and many-to-many relationships in Java Hibernate What is the mapping method of one-to-many and many-to-many relationships in Java Hibernate May 27, 2023 pm 05:06 PM

Hibernate's one-to-many and many-to-many Hibernate is an excellent ORM framework that simplifies data access between Java applications and relational databases. In Hibernate, we can use one-to-many and many-to-many relationships to handle complex data models. Hibernate's one-to-many In Hibernate, a one-to-many relationship means that one entity class corresponds to multiple other entity classes. For example, an order can correspond to multiple order items (OrderItem), and a user (User) can correspond to multiple orders (Order). To implement a one-to-many relationship in Hibernate, you need to define a collection attribute in the entity class to store

How to perform bulk insert update operations in Hibernate? How to perform bulk insert update operations in Hibernate? Aug 27, 2023 pm 11:17 PM

In this article, we will see how to perform bulk insert/update in Hibernate. Whenever we execute a sql statement, we do it by making a network call to the database. Now, if we have to insert 10 entries into the database table, then we have to make 10 network calls. Instead, we can optimize network calls by using batch processing. Batch processing allows us to execute a set of SQL statements in a single network call. To understand and implement this, let us define our entity − @EntitypublicclassParent{@Id@GeneratedValue(strategy=GenerationType.AUTO)

Introduction to Hibernate framework in Java language Introduction to Hibernate framework in Java language Jun 10, 2023 am 11:35 AM

Hibernate is an open source ORM framework that binds the data mapping between relational databases and Java programs to each other, making it easier for developers to access data in the database. Using the Hibernate framework can greatly reduce the work of writing SQL statements and improve the development efficiency and reusability of applications. Let's introduce the Hibernate framework from the following aspects. 1. Advantages of the Hibernate framework: object-relational mapping, hiding database access details, making development

In-depth understanding of the Java framework technology stack: explore common Java frameworks such as Spring MVC, Hibernate, MyBatis, etc. In-depth understanding of the Java framework technology stack: explore common Java frameworks such as Spring MVC, Hibernate, MyBatis, etc. Dec 26, 2023 pm 12:50 PM

Java framework technology stack: Introducing commonly used Java frameworks, such as SpringMVC, Hibernate, MyBatis, etc. With the continuous development of Java, more and more frameworks have been developed to simplify the development process. Among them, SpringMVC, Hibernate, MyBatis, etc. are one of the most commonly used frameworks in Java development. This article will introduce the basic concepts and usage of these frameworks to help readers better understand and apply these frameworks. First, let’s introduce Sp

How does Hibernate second level cache work? How does Hibernate second level cache work? Sep 14, 2023 pm 07:45 PM

Caching helps reduce database network calls when executing queries. Level 1 cache and session linking. It is implemented implicitly. The first level cache exists until the session object exists. Once the session object is terminated/closed, there will be no cached objects. Second level cache works for multiple session objects. It is linked with the session factory. Second level cache objects are available to all sessions using a single session factory. These cache objects will be terminated when a specific session factory is closed. To implement the second level cache we need to add the following dependencies to use the second level cache. <!--https://mvnrepository.com/artifact/net.sf.ehcache/ehcache--><de

See all articles