Java 带空值的Spring JPA存储过程？

我有一个存储过程，它是从JpaRepository实现中调用的

@Repository
public interface DataMartRepo extends JpaRepository<DataMartDAO, String> {

    @Procedure(procedureName = "dbo.txn_ETL")
    public void txnETL(
        @Param("txId") String txId,
        @Param("inId") String inId,
        @Param("proc") String proc,
        @Param("qtys") String qtys);

---

如何处理空值？将所有字符串设置为“”不会提供空插入。

看起来SP调用中具有空值的参数存在问题。请参见

以下是解决您的问题的可能方案：

SEVERE: Servlet.service() for servlet [dispatcher] in context with path [/Authenticator] 
threw exception [Request processing failed; nested exception is org.springframework.orm.jpa.JpaSystemException: 
    Error calling CallableStatement.getMoreResults; nested exception is org.hibernate.exception.GenericJDBCException: 
    Error calling CallableStatement.getMoreResults] with root cause
com.microsoft.sqlserver.jdbc.SQLServerException: The value is not set for the parameter number 3.
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:190)
at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.buildParamTypeDefinitions(SQLServerPreparedStatement.java:260)
at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.buildPreparedStrings(SQLServerPreparedStatement.java:219)
at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.doPrepExec(SQLServerPreparedStatement.java:612)
at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.doExecutePreparedStatement(SQLServerPreparedStatement.java:400)
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