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General CRUD 1.1 Create the interface EmployeeMapper and inherit BaseMapper<T> public interface EmployeeMapper extends BaseMapper<Employee> { /* * Mapper Interface * * Based on Mybatis: Writing CRUD-related methods in Mapper interface provides corresponding SQL mapping files and corresponding SQL statements for Ma ...

In Mobile, we usually use the following: Returns a result User selectOne(User user); <select id="selectOne" parameterType="cn.lyn4ever.entity.User" resultType="cn.lyn4ever.entity.User"> select id,username,telphone from user where telphone=#{telphone} and password = #{password} </select> Returns multiple results (in f ...

Code directly 1.Class OneClass public class OneClass { String s; public void setS(String s) { this.s = s; } } 2.Class Demo public class Demo { OneClass oneClass; public void setOneClass(OneClass oneClass) { this.oneClass = oneClass; } { System.out ...

Generator SqlMapCustom can be used as a tool to automatically load POJO, mapper interface and corresponding xml. First, paste the source link. Click here: GitHub Source Link Look at the source code annotations for usage. The contents of the project are as follows: GeneratorSqlmap.java import ja ...

Tomcat -- About Project Configuration Configuration Ports - involving three ports - modifying conf/server.xml # Close the port of tomcat <Server port="8005" shutdown="SHUTDOWN"> # Establish access to http, browser access <Connector port="8080" protocol="HTTP/1.1" connection ...

The javaBean is as follows: public class Permission implements Serializable { private Integer id; private String name; private String icon; private String url; private boolean open;//Are the leaves open? private Integer pid;//Father id private boolean checked;//Is it selected ...

siye@r480:~/svlution/workspace/springcore4322$ tree src/ src/ ├── main │   ├── java │   │   ├── log4j.properties │   │   └── ocn │   │   └── site │   │   └── springioc │   │   └── domain │   │   └── User.java │   └── resources └── test ├── java │   └── ocn ...

Public Number: Madad's Technical Wheel Sharing mainly uses ANTLR4 to parse SQL. Take mysql as an example, before analyzing the source code, we can first understand the following three points: antlr4, how to write.g4 grammar file The mysql grammar can be referred to https://dev.mysql.com/doc/refman/8.0/en/sql-syntax-data-manipulation.html ...

With the development of online shopping, the express industry has also grown. The demand for the docking of express inquiry interface is also growing. The following is the collation of free express interface, with the call process attached, to share with you. In the project development, some requirements will inevitably use some Api interfaces ...

Links to the original text: https://my.oschina.net/u/580135/blog/612244 Two mutex mechanisms: 1,synchronized 2,ReentrantLock ReentrantLock is a new feature of jdk5. ReentrantLoc ...