box-sizibox-sizing: border-box; border: 0px; margin-top: 10px; margin-bottom: 10px; padding: 0px; -webkit-font-smoothing: antialiased; font-size: 18px; font-family: "Microsoft YaHei", Arial, Verdana, Tahoma, sans-serif; vertical-align: baseline; background: rgb(255, 255, 255); line-height: 32px; color: rgb(85, 85, 85); white-space: normal;>前言
因工作需要将公司SSH项目改为Spingboot项目网站源码,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); } } }
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