如何从java类调用不带参数的过程作为表类型（2）

Posted 2023-03-28

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【中文标题】如何从java类调用不带参数的过程作为表类型（2）【英文标题】：how to call procedure with out parameter as table type from a java class (2) 【发布时间】：2013-05-31 06:47:48 【问题描述】：

这里已经有答案了： how to call procedure with out parameter as table type from a java class

但我们有问题，返回值 vor 代码总是“???”，正确返回 trxSeq 的值。如果我们直接在db上调用它，代码会被值填充。

我们尝试了 varchar2、char、varchar 类型的代码。没有区别。

desc t_mam_code:
       TYPE t_mam_code AS OBJECT(                              
         code VARCHAR2(30),                                                
         trxSeq NUMBER(12)

java方法

final String typeName = "T_MAM_CODE";
final String typeTableName = "T_MAM_CODE_TAB";

// no difference, if we use Oracle Connection or java.sql.Connection
OracleConnection oracleConnection= connection.unwrap(OracleConnection.class);

// Get a description of your type (Oracle specific)
final StructDescriptor structDescriptor = StructDescriptor.createDescriptor(typeName, oracleConnection);
final ResultSetMetaData metaData = structDescriptor.getMetaData();

CallableStatement call = oracleConnection.prepareCall("call business.getCodes(?, ?, ?, ?, ?, ?, ?)");
// CallableStatement call = connection.prepareCall("call business.getCodes(?, ?, ?, ?, ?, ?, ?)");

int i = 1;
call.setString(i++, shopId);
call.setDate(i++, new java.sql.Date(consumerStamp.getTime()));
call.setInt(i++, version);
...

int out1 = i++;

call.registerOutParameter(out1, Types.ARRAY, typeTableName);
//call.registerOutParameter(out1, OracleTypes.ARRAY, typeTableName);

call.execute();

Object[] data = (Object[]) ((Array) call.getObject(out1)).getArray();
for(Object tmp : data) 
  Struct row = (Struct) tmp;
  // Attributes are index 1 based...
  int idx = 1;
  for(Object attribute : row.getAttributes())                
     System.out.println(metaData.getColumnName(idx) + " " + attribute);                                            
     ++idx;

输出是：