Use tools IDEA
1. create a new maven project, configured project file structure
Configuration considerations:
1. connect to the database
Need to connect to the database connection properties (database address, account number, password, driver information), it will create a jdbc. The Properties file in the resources file, then the configuration file content.
There is a connection then start the connection, appllocationContext.xml configuration database connection
Then built the table, because it is jpa so first build a User objects, add jpa annotations
@Entity // build relationships with database
@Table // set the table
@ Id // set the primary key
@GeneratedValue //自增
Set these, there are sure to be scanned notes, since the use jpa it will certainly be configured EntityManagerFactoryBean , then went appllocationContext.xml configuration EntityManagerFactoryBean
These configurations good to test the test to establish a test class to begin testing next file
Run testJpa () can print address that success.
Or to build a database to see the user table did.
The connection is completed
Configuration considerations:
1. connect to the database
Need to connect to the database connection properties (database address, account number, password, driver information), it will create a jdbc. The Properties file in the resources file, then the configuration file content.
There is a connection then start the connection, appllocationContext.xml configuration database connection
Then built the table, because it is jpa so first build a User objects, add jpa annotations
@Entity // build relationships with database
@Table // set the table
@ Id // set the primary key
@GeneratedValue //自增
设置好这些，有注解肯定要扫描，既然要用jpa那肯定要配置EntityManagerFactoryBean，然后又去appllocationContext.xml配置EntityManagerFactoryBean