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.Assi<i>本文来源gaodai$ma#com搞$代*码网2</i>stant;
@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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转载请注明原文链接：Spring boot调用Oracle存储过程的两种方式及完整代码
转载请注明原文链接：Spring boot调用Oracle存储过程的两种方式及完整代码
