Spring Integration - Failing to Retrieve Oracle Array OUT PARAM

问题

Description: Attempting to create a gateway service call that returns a oracle array type. Specially getting the sys.dbmsoutput_linesarray. The error I get below seems that I have something wrong on my configuration when I register the OUT param or possibly in the service. Wondering if someone can tell me what I am doing wrong?

Error Message: CallableStatementCallback; uncategorized SQLException for SQL [{call GET_DBMS_OUTPUT(?)}]; SQL state [99999]; error code [17004]; Invalid column type: 1111; nested exception is java.sql.SQLException: Invalid column type: 1111

Referenced Code Example I am trying to do in spring integration: JAVA DBMS ORACLE ARRAY CALLABLE STATEMENT EXAMPLE

Oracle 12c - PL SQL Function:

create or replace function get_dbms_output
    return dbmsoutput_linesarray
as
    l_output dbmsoutput_linesarray;
    l_linecount number;
begin
    dbms_output.enable;
        dbms_output.put_line('This is a line');
        dbms_output.put_line('This is another line');
        dbms_output.put_line('This is the last line.');


    dbms_output.get_lines(l_output, l_linecount);

    if l_output.count > l_linecount then
        -- Remove the final empty line above l_linecount
        l_output.trim;
    end if;

    return l_output;
end get_dbms_output;

Spring Context File - Taken from spring integration git hub example stored-procedure-oracle . Sample code was augmented with the following outbound gateway.

<bean id="sqlReturnArray" class="org.springframework.data.jdbc.support.oracle.SqlReturnArray"></bean>

<int-jdbc:stored-proc-outbound-gateway
    id="outbound-gateway-function-dbms" request-channel="procedureDBMSRequestChannel"
    data-source="dataSource" 
    stored-procedure-name="get_dbms_output"
    expect-single-result="true">

    <int-jdbc:sql-parameter-definition name="l_output" type="#{T(oracle.jdbc.OracleTypes).ARRAY}"  type-name="DBMSOUTPUT_LINESARRAY" direction="OUT" return-type="sqlReturnArray" />

</int-jdbc:stored-proc-outbound-gateway>

JAVA - Updated String Conversion Service

public interface StringConversionService {

    /**
     * Converts a String to Upper Case.
     *
     * @param stringToConvert The string to convert to upper case
     * @return The converted upper case string.
     */
    String convertToUpperCase(String stringToConvert);

    Integer getNumber();

    @Payload("new java.util.Date()")
    String[] getLines();
}

JAVA - MAIN

final StringConversionService service = context.getBean(StringConversionService.class);

        System.out.println("Calling Stored Proc");
        String[] dbmsLines = service.getLines();

Updated: Spring Config: - Added a bean for SqlReturnArray. - Added a return-type for a reference to SqlReturnArray bean - Change the StringConversionService to use a String[] instead of oracle Array return type. - Updated main class to get String[]

回答1:

You have to add return-type and implement it somehow like SqlReturnArray:

<int-jdbc:sql-parameter-definition name="l_output" type="#{T(oracle.jdbc.OracleTypes).ARRAY}"  type-name="DBMSOUTPUT_LINESARRAY" direction="OUT" return-type="sqlReturnArray" />

Where sqlReturnArray is a bean of that SqlReturnArray.

And of course, handle the result as a String[] already, not a unavailable there ARRAY.

来源：https://stackoverflow.com/questions/42324142/spring-integration-failing-to-retrieve-oracle-array-out-param

标签

java

spring-integration