JPA复合主键源码案例
http://note.youdao.com/share/?id=9065b839f2d6b3f1b6310ad9bb92d3f6type=note @Entity@Table(name = RELEASE_INFO_ELEMENT)public class ReleaseInfoElement { @EmbeddedId private PK pk = new PK(); @Column(name = VALUE) private String value; public
http://note.youdao.com/share/?id=9065b839f2d6b3f1b6310ad9bb92d3f6&type=note
@Entity @Table(name = "RELEASE_INFO_ELEMENT") public class ReleaseInfoElement { @EmbeddedId private PK pk = new PK(); @Column(name = "VALUE") private String value; public Long getInfoId() { return pk.infoId; } public void setInfoId(Long infoId) { pk.infoId = infoId; } public Long getParamId() { return pk.paramId; } @Override public String toString() { return "ReleaseInfoElement [infoId=" + pk.infoId + ", paramId=" + pk.paramId + ", value=" + value + "]"; } public void setParamId(Long paramId) { pk.paramId = paramId; } public String getValue() { return value; } public void setValue(String value) { this.value = value; } @Embeddable public static class PK implements Serializable { @Column(name = "INFO_ID") private Long infoId; @Column(name = "PARAM_ID") private Long paramId; public PK() { super(); } } }
Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

HTTP status code 520 means that the server encountered an unknown error while processing the request and cannot provide more specific information. Used to indicate that an unknown error occurred when the server was processing the request, which may be caused by server configuration problems, network problems, or other unknown reasons. This is usually caused by server configuration issues, network issues, server overload, or coding errors. If you encounter a status code 520 error, it is best to contact the website administrator or technical support team for more information and assistance.

Choosing JPA or MyBatis depends on specific needs and preferences. Both JPA and MyBatis are Java persistence layer frameworks, and both provide the function of mapping Java objects to database tables. If you need a mature framework that supports cross-database operations, or the project has already adopted JPA as a persistence layer solution, continuing to use JPA may be a better choice. If you want higher performance and more flexible SQL writing capabilities, or are looking for a solution that is less dependent on the database, MyBatis is more suitable.

JPA and MyBatis: Function and Performance Comparative Analysis Introduction: In Java development, the persistence framework plays a very important role. Common persistence frameworks include JPA (JavaPersistenceAPI) and MyBatis. This article will conduct a comparative analysis of the functions and performance of the two frameworks and provide specific code examples. 1. Function comparison: JPA: JPA is part of JavaEE and provides an object-oriented data persistence solution. It is passed annotation or X

Understand the meaning of HTTP 301 status code: common application scenarios of web page redirection. With the rapid development of the Internet, people's requirements for web page interaction are becoming higher and higher. In the field of web design, web page redirection is a common and important technology, implemented through the HTTP 301 status code. This article will explore the meaning of HTTP 301 status code and common application scenarios in web page redirection. HTTP301 status code refers to permanent redirect (PermanentRedirect). When the server receives the client's

Solution: 1. Check the Content-Type in the request header; 2. Check the data format in the request body; 3. Use the appropriate encoding format; 4. Use the appropriate request method; 5. Check the server-side support.

Mobile phones are now a necessity for young and middle-aged people. Of course, people of each age group have different needs for mobile phones. As one of the more popular models now, RedmiK70Pro has a very diverse range of functions and services that can meet the needs of consumers of different ages. How to set the return key and home key on Redmi K70Pro? You also need to understand it clearly. Only after you understand it can you decide whether to buy this mobile phone. Then follow the editor to take a look at the following content! How to set the return key and home key on Redmi K70Pro? To access your phone's settings menu, you can open the settings interface by pulling down the notification shade or looking for the settings icon on your home screen. In the settings interface, find and click "Button" or "Navigation Bar"

How to implement HTTP streaming in C++? Create an SSL stream socket using Boost.Asio and the asiohttps client library. Connect to the server and send an HTTP request. Receive HTTP response headers and print them. Receives the HTTP response body and prints it.

HTTP Status Code 200: Explore the Meaning and Purpose of Successful Responses HTTP status codes are numeric codes used to indicate the status of a server's response. Among them, status code 200 indicates that the request has been successfully processed by the server. This article will explore the specific meaning and use of HTTP status code 200. First, let us understand the classification of HTTP status codes. Status codes are divided into five categories, namely 1xx, 2xx, 3xx, 4xx and 5xx. Among them, 2xx indicates a successful response. And 200 is the most common status code in 2xx
