How to use weed3-3.1.Xml sql
This article mainly explains how to use weed3-3.1.Xml sql. Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let Xiaobian take you to learn how to use weed3-3.1.Xml sql.
Weed3 A Micro ORM Framework (Only 0.1Mb Oh)
Source code: github.com/noear/weed3 Source code: gitee.com/noear/weed3
Use of Conventions ***
1. convention resources/weed3/is xml sql root directory
2. Project start compilation parameters: -parameters
Prepare to start with a simple example.
This time you need to quote a meven plug-in (played mybatis all understand)
frame references
org.noear weed3 3.2.2.4
meven plug-in references (used to generate mapper classes)
org.noear weed3-maven-plugin 3.2.2.2 First, write a simple XML file.
resources/weed3/DbUserApi.xml
SELECT * FROM `user` WHERE id=@{user_id} There are two ways to call XML SQL.
Via db.call ("@... ") call
DbContext db = new DbContext(...); UserModel um = db.call("@weed3demo.xmlsql.user_get") .set("user_id") .getItem(UserModel.class);
Generate Mapper interfaces for use with dynamic proxies
1. Use the meven plugin to generate it (double-click: weed3:generator)
2. Java file generated (java/weed3demo/xmlsql/DbUserApi.java)
package weed3demo.xmlsql;@Namespace("weed3demo.xmlsql")public interface DbUserApi{ /** */ weed3demo.mapper.UserModel user_get(int user_id);}
3. try
//global public static void main(String[] args){ //configure a context with a name (for xml mapper) DbContext db = new DbContext(...). nameSet("testdb");//Get xml mapper DbUserApi dbUserApi = XmlMapper.get(DbUserApi.class) through proxy; //Use it UserModel tmp = dbUserApi.user_get(10);} At this point, I believe that everyone has a deeper understanding of "weed3-3.1.Xml sql usage", so let's actually operate it! Here is the website, more related content can enter the relevant channels for inquiry, pay attention to us, continue to learn!
