openTSP框架下的模块都是连接mysql数据库,近期青汽有连接sqlServer数据库的需求,在调研后配置了sqlServer数据库,使用jpa调用存储过程,中间也踩了不少坑,总结一下,避免大家再掉进去。
1、首先配置sqlServer的依赖
<dependency> <groupId>com.microsoft.sqlserver</groupId> <artifactId>sqljdbc4</artifactId> <version>4.0</version> </dependency>
注意:从maven私服下载jar包失败,为了简便使用,可以先下载sqljdbc4.jar,然后用命令行切换到jar包所在路径,执行mvn install:install-file -Dfile=sqljdbc4.jar -Dpackaging=jar -DgroupId=com.microsoft.sqlserver -DartifactId=sqljdbc4 -Dversion=4.0,这样就把jar包安装到了本地依赖仓库。
2、修改数据库连接配置文件application-xxx.properties
spring.datasource.url=jdbc:sqlserver://ip:1433;DatabaseName=test spring.datasource.username=test spring.datasource.password=test spring.datasource.validation-query=SELECT 1; spring.datasource.test-on-borrow=true spring.datasource.test-while-idle=true spring.datasource.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver spring.datasource.max-active=200 spring.datasource.max-idle=8 spring.datasource.min-idle=8 spring.datasource.initial-size=10 spring.jpa.database = SQLSERVER spring.jpa.database-platform=org.hibernate.dialect.SQLServer2005Dialect spring.jpa.show-sql=true spring.jta.bitronix.datasource.allow-local-transactions=true
sqlServer的driverClass是com.microsoft.sqlserver.jdbc.SQLServerDriver
3、java连接sqlServer数据库
1)创建sql文件test-dynamic.xml
<sql-query name="queryTest"> <![CDATA[ SELECT jf0 , jf1 , jf2 , jf3 , jf4 FROM testTable ]]> </sql-query>
2)dao层调用
public String getJF01(TestCommand command) { List<TestPojo> list = dao.sqlFind("queryTest",command, TestPojo.class); for(TestPojo pojo : list) { System.out.println("pojo=" + pojo); } return list.get(0).toString(); }
TestPojo里就是设置了jf0到jf5这几个属性以及set、get方法,不再赘述。
4、JPA调用sqlServer存储过程
1)Entity
采用注解的方式,要和数据库的1张表关联,随便一张表都可以。多个存储过程用NamedStoredProcedureQueries。
@Entity @Table(name="testTable") @NamedStoredProcedureQueries({ @NamedStoredProcedureQuery(name = "testProc1", procedureName = "testProc1", parameters = { //name是JPA中的存储过程的名字, procedureName是数据库存储过程的名字 @StoredProcedureParameter(mode = ParameterMode.IN, name = "inParam1", type = String.class), @StoredProcedureParameter(mode = ParameterMode.IN, name = "inParam2", type = String.class)}), @NamedStoredProcedureQuery(name = "testProc", procedureName = "testProc", parameters = { @StoredProcedureParameter(mode = ParameterMode.IN, name = "inParam1", type = String.class), @StoredProcedureParameter(mode = ParameterMode.IN, name = "inParam2", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "outParam", type = String.class) }) }) public class TestEntity implements java.io.Serializable { @Id private String name; }
2)Repository
参数使用@Param,注解内容要和entity的参数名一致。
@Repository public interface TestRepository extends JpaRepository<TestEntity, String>, JpaSpecificationExecutor<TestEntity> { @Procedure(name="testProc")//和entity的jpa的存储过程名一致 String testProc(@Param("inParam1") String inParam1,@Param("inParam2") String inParam2 ); }
3)Service
直接调用repository,就有单个返回值。
@Service public class TestService extends BaseService { @Autowired private TestRepository repository; public String testProc(TestCommand command) { String out = repository.testProc1("chen",String.valueOf(System.currentTimeMillis())); System.out.println("outParam = "+ out); return out; } }
5、多个out出参问题
注意:jpa只支持1个OUT出参的存储过程,暂时无法调用多个OUT出参的存储过程(可以接收select语句的多个出参)。我们项目里恰巧是多个OUT出参存储过程,而且还修改不了存储过程,只能1个单出参存储过程,封装多出参存储过程,并把多个出参合并成1个。
inner多出参存储过程:
ALTER PROCEDURE [dbo].[inProc] @inParam1 VARCHAR(20), @inParam2 VARCHAR(20), @outParam1 VARCHAR(20) OUTPUT, @outParam2 VARCHAR(20) OUTPUT AS BEGIN insert into mytable values(@inParam1,@inParam2); set @outParam1 = ‘result123‘; set @outParam2 = ‘result456‘; END
外层封装的单出参存储过程
ALTER PROCEDURE [dbo].outProc @inParam1 varchar(20) , @inParam2 varchar(20) , @outParam1 varchar(20) output AS declare @out1 varchar(20) declare @out2 varchar(20) BEGIN exec inProc @inParam1,@inParam2,@out1 output,@out2 output; set @outParam1 = @out1 + @out2 ; END
面对多个out出参,也可以采用我们最熟悉度jdbc方式,关键点就是获取数据库连接connection。
Session session = (org.hibernate.Session) entityManager.getDelegate(); SessionFactoryImplementor sf = (SessionFactoryImplementor) session.getSessionFactory(); try { Connection connection = sf.getConnectionProvider().getConnection();//获取数据库connection连接 CallableStatement cs = connection.prepareCall("{call inProc(?,?,?,?)}"); cs.setString(1,"chen"); cs.setString(2,String.valueOf(System.currentTimeMillis())); cs.registerOutParameter(3, Types.VARCHAR);//注册第一个out出参 cs.registerOutParameter(4, Types.VARCHAR);//注册第二个out出参 cs.execute(); String code = cs.getString(3);//获取第一个out出参 String message = cs.getString(4);//获取第二个out出参 System.out.println("code="+code+",message="+message); } catch (SQLException e) { e.printStackTrace(); } finally { cs.close(); connection.close(); }