Spring boot调用Oracle存储过程的两种方式及完整代码
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2022-03-20 19:05:15
前言因工作需要将公司ssh项目改为spingboot项目,将项目中部分需要调用存储过程的部分用entitymanagerfactory.unwrap(sessionfactory.class).ope...
前言
因工作需要将公司ssh项目改为spingboot项目,将项目中部分需要调用存储过程的部分用entitymanagerfactory.unwrap(sessionfactory.class).opensession()来获取session实现后发现项目访问数据库超过十次就会挂掉,原因是springboot连接池数量默认为10,猜测是每次访问数据库后连接未释放导致的,手动关闭session后问题解决。
解决问题的过程中又发现了另外两种调用方式:
- 直接用entitymanager的createstoredprocedurequery()方法调用 (推荐)
- 通过如下方式获取session来调用,这种方式不需要手动关闭session来释放连接,具体原因我也没搞明白,有知道的朋友欢迎指点
session session = entitymanager.unwrap(session.class);
完整代码
package com.hzjd.produre.repository; import javax.persistence.entitymanager; import javax.persistence.entitymanagerfactory; import javax.persistence.parametermode; import javax.persistence.persistencecontext; import javax.persistence.storedprocedurequery; import org.hibernate.session; import org.hibernate.sessionfactory; import org.hibernate.procedure.procedurecall; import org.springframework.beans.factory.annotation.autowired; import org.springframework.stereotype.repository; import com.hzjd.produre.bean.queryresponse; import com.hzjd.produre.utils.assistant; @repository public class produredao { public final static string public_pag_sys_getnextid = "public_pag.sys_getnextid"; public final static string psbc_querybill = "psbcpay.querybill"; @persistencecontext entitymanager entitymanager; @autowired entitymanagerfactory entitymanagerfactory; public session getsession() { return entitymanagerfactory.unwrap(sessionfactory.class).opensession(); } /** * 使用entitymanager调用存储过程 * * @param pay_id * @return */ public queryresponse querybill1(string pay_id) throws exception { queryresponse queryresponse = new queryresponse(); storedprocedurequery call = entitymanager.createstoredprocedurequery(psbc_querybill); call.registerstoredprocedureparameter(1, string.class, parametermode.in).setparameter(1, pay_id); call.registerstoredprocedureparameter(2, string.class, parametermode.out); call.registerstoredprocedureparameter(3, string.class, parametermode.out); call.registerstoredprocedureparameter(4, string.class, parametermode.out); call.registerstoredprocedureparameter(5, string.class, parametermode.out); call.registerstoredprocedureparameter(6, string.class, parametermode.out); call.registerstoredprocedureparameter(7, string.class, parametermode.out); call.registerstoredprocedureparameter(8, string.class, parametermode.out); call.registerstoredprocedureparameter(9, string.class, parametermode.out); call.registerstoredprocedureparameter(10, string.class, parametermode.out); call.execute(); queryresponse.getbody().setpay_id(pay_id); queryresponse.getbody().setcustname(assistant.nulltoempty(call.getoutputparametervalue(2))); queryresponse.getbody().sethome_addr(assistant.nulltoempty(call.getoutputparametervalue(3))); queryresponse.getbody().settran_amt(assistant.nulltoempty(call.getoutputparametervalue(5))); queryresponse.getbody().settotal_amt(assistant.nulltoempty(call.getoutputparametervalue(6))); queryresponse.getbody().setbalance(assistant.nulltoempty(call.getoutputparametervalue(8))); int errorcode = assistant.nulltoint(call.getoutputparametervalue(9)); string errormsg = assistant.nulltoempty(call.getoutputparametervalue(10)); if (errorcode == 0) { return queryresponse; } else { throw new exception(errormsg); } } /** * 使用sessionfactory开启session调用存储过程 * * @param pay_id * @return */ public queryresponse querybill2(string pay_id) throws exception { queryresponse queryresponse = new queryresponse(); // 调用完成后需关闭session否则会出现连接失效 try (session session = getsession();) { procedurecall call = session.createstoredprocedurecall(psbc_querybill); call.registerparameter(1, string.class, parametermode.in).bindvalue(pay_id); call.registerparameter(2, string.class, parametermode.out); call.registerparameter(3, string.class, parametermode.out); call.registerparameter(4, string.class, parametermode.out); call.registerparameter(5, string.class, parametermode.out); call.registerparameter(6, string.class, parametermode.out); call.registerparameter(7, string.class, parametermode.out); call.registerparameter(8, string.class, parametermode.out); call.registerparameter(9, string.class, parametermode.out); call.registerparameter(10, string.class, parametermode.out); queryresponse.getbody().setpay_id(pay_id); queryresponse.getbody().setcustname(assistant.nulltoempty(call.getoutputs().getoutputparametervalue(2))); queryresponse.getbody().sethome_addr(assistant.nulltoempty(call.getoutputs().getoutputparametervalue(3))); queryresponse.getbody().settran_amt(assistant.nulltoempty(call.getoutputs().getoutputparametervalue(5))); queryresponse.getbody().settotal_amt(assistant.nulltoempty(call.getoutputs().getoutputparametervalue(6))); queryresponse.getbody().setbalance(assistant.nulltoempty(call.getoutputs().getoutputparametervalue(8))); int errorcode = assistant.nulltoint(call.getoutputs().getoutputparametervalue(9)); string errormsg = assistant.nulltoempty(call.getoutputs().getoutputparametervalue(10)); if (errorcode == 0) { return queryresponse; } else { throw new exception(errormsg); } } } /** * 使用sessionfactory开启session调用存储过程 * * @param pay_id * @return */ public queryresponse querybill3(string pay_id) throws exception { queryresponse queryresponse = new queryresponse(); session session = entitymanager.unwrap(session.class); procedurecall call = session.createstoredprocedurecall(psbc_querybill); call.registerparameter(1, string.class, parametermode.in).bindvalue(pay_id); call.registerparameter(2, string.class, parametermode.out); call.registerparameter(3, string.class, parametermode.out); call.registerparameter(4, string.class, parametermode.out); call.registerparameter(5, string.class, parametermode.out); call.registerparameter(6, string.class, parametermode.out); call.registerparameter(7, string.class, parametermode.out); call.registerparameter(8, string.class, parametermode.out); call.registerparameter(9, string.class, parametermode.out); call.registerparameter(10, string.class, parametermode.out); queryresponse.getbody().setpay_id(pay_id); queryresponse.getbody().setcustname(assistant.nulltoempty(call.getoutputs().getoutputparametervalue(2))); queryresponse.getbody().sethome_addr(assistant.nulltoempty(call.getoutputs().getoutputparametervalue(3))); queryresponse.getbody().settran_amt(assistant.nulltoempty(call.getoutputs().getoutputparametervalue(5))); queryresponse.getbody().settotal_amt(assistant.nulltoempty(call.getoutputs().getoutputparametervalue(6))); queryresponse.getbody().setbalance(assistant.nulltoempty(call.getoutputs().getoutputparametervalue(8))); int errorcode = assistant.nulltoint(call.getoutputs().getoutputparametervalue(9)); string errormsg = assistant.nulltoempty(call.getoutputs().getoutputparametervalue(10)); if (errorcode == 0) { return queryresponse; } else { throw new exception(errormsg); } } }
总结
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