pl/sql过程为varchar2列返回3个问号('???')(wls 10.3.4 - weblogic 11g)

Question

我得到以下代码在OAS10上正常工作,从sql过程中获取自定义对象数组:

Connection conn = null;
OracleCallableStatement stmt = null;
RequestsWrapper requestsWrapper = null;
conn = getConnection(DATASOURCE);
if (conn != null) {
    stmt = (OracleCallableStatement) conn.prepareCall("{call packageName.procedureName(?, ?, ?)}");
    stmt.registerOutParameter(3, OracleTypes.ARRAY, "V_ARRAY_OF_CUSTOM_OBJECTS");
    stmt.setString(1, in1);
    stmt.setString(2, in2);
    stmt.execute();
    ARRAY zahtjev = (ARRAY) cs.getArray(3);
    RequestsWrapper requestsWrapper = new RequestsWrapper();
    for (Object object : (Object[]) zahtjev.getArray()) {
        if (object != null) {
              CustomObject co = new CustomObject();
              Object[] attributes = ((STRUCT) object).getAttributes();
              co.setVarcharAttribute((String) attributes[0]);
              co.setNumericAttribute(((BigDecimal) attributes[1]).intValue());
              requestsWrapper.getObjectList().add(co);
       }
    }
}

我必须将应用程序迁移到WLS 10.3.4.当我尝试执行现有代码时,我遇到了一个异常:无法转换为oracle.sql.ARRAY.我在WLS文档中找到了:

对于Oracle Thin驱动程序中的大多数扩展,您可以使用标准技术,如使用JDBC扩展到JDBC接口中所述.但是,Oracle Thin驱动程序不为以下类中的扩展方法提供公共接口:

oracle.sql.ARRAY
oracle.sql.STRUCT
oracle.sql.REF
oracle.sql.BLOB oracle.sql.CLOB

WebLogic Server提供了自己的接口来访问这些类的扩展方法:

weblogic.jdbc.vendor.oracle.OracleArray weblogic.jdbc.vendor.oracle.OracleStruct weblogic.jdbc.vendor.oracle.OracleRef weblogic.jdbc.vendor.oracle.OracleThinBlob weblogic.jdbc.vendor.oracle.OracleThinClob

所以,我按照说明操作,我得到了以下代码

Connection conn = null;
OracleCallableStatement stmt = null;
RequestsWrapper requestsWrapper = null;
conn = getConnection(DATASOURCE);
if (conn != null) {
    ArrayDescriptor arrayDescriptor = ArrayDescriptor.createDescriptor("V_ARRAY_OF_CUSTOM_OBJECTS", conn);
    StructDescriptor structDescriptor = StructDescriptor.createDescriptor("T_CUSTOM_OBJECT", conn);
    stmt = (OracleCallableStatement) conn.prepareCall("{call packageName.procedureName(?, ?, ?)}");
    stmt.registerOutParameter(3, OracleTypes.ARRAY, "V_ARRAY_OF_CUSTOM_OBJECTS");
    stmt.setString(1, in1);
    stmt.setString(2, in2);
    stmt.execute();
    Array request = stmt.getArray(3);
    OracleArray requestOracleArray =  ((weblogic.jdbc.vendor.oracle.OracleArray)request).getOracleArray(); 
    Datum[] datumArray = ((weblogic.jdbc.vendor.oracle.OracleArray)request).getOracleArray();
    RequestsWrapper requestsWrapper = new RequestsWrapper();
    for (Datum object : datumArray) {
        if (object != null) {
           CustomObject co = new CustomObject();
           Object[] attributes = ((Struct) object).getAttributes();
           co.setVarcharAttribute((String) attributes[0]);
           co.setNumericAttribute(((BigDecimal) attributes[1]).intValue());
           requestsWrapper.getObjectList().add(co);
       }
    }
}

和数字属性映射正常,但我有'???'而不是varchar2属性.有没有人有类似的问题？

提前致谢.

编辑:我在几页信息中找到orai18n.jar应添加到服务器类路径的信息.但它对我不起作用.

Answer 1

最后,orai18n.jar是解决方案.我必须将它包含在weblogic的CLASSPATH中,所以在setDomainEnv.cmd的%MY_DOMAIN%\ bin文件夹中添加

设置CLASSPATH =%WL_HOME%\ server\ext\jdbc\oracle\11g\orai18n.jar

现在它的工作原理:)