怎样让SqlServer的存储过程返回结果集

// Initialize the JDBC Driver
Driver driver = (Driver)Class.forName("net.sourceforge.jtds.jdbc.Driver").newInstance();
DriverManager.registerDriver(driver);

// Create The DB Connection
String dbUrl = "jdbc:jtds:sqlserver://[host]:[port]/[database]";
Connection conn = DriverManager.getConnection(dbUrl, "username", "password");

// Prepare and call the stored procedure
CallableStatement proc = conn.prepareCall("{ ? = call GetSomeData(?, ?) }");

// Register the ResultSet
proc.registerOutParameter(1, java.sql.Types.OTHER);

// Register Input Parameters
proc.setInt("@NumberParameter", this.messageVersion);
// If you need to set a NULL parameter
proc.setNull("@NumberParameter2", java.sql.Types.INTEGER);

// Execute the stored procedure
proc.execute();

// If we have a ResultSet
  ResultSet rs = proc.getResultSet();
if(rs.next())
{
  // Dump the XML message from the ResultSet BLOB field to the file
  InputStream in = null;
  OutputStream out = null;
  byte[] buf = new byte[1024];
  int len;

  // Open the XML Message (BLOB) field in the ResultSet
  Clob clob = rs.getClob("LargeXMLField");
  in = clob.getAsciiStream();

  // Write contents of the BLOB to the output file
  while((len = in.read(buf)) > 0) {
    out.write(buf, 0, len);
  }
}