我要评论前言
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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