java 实现往oracle存储过程中传递array数组类型的参数

Posted 2020-10-31 ✧*꧁一品堂.技术学习笔记꧂*✧.

注：本文来源于 《  java 实现往oracle存储过程中传递array数组类型的参数  》

最近项目中遇到通过往存储过程传递数组参数的问题， 

浪费了N多个小时，终于有点头绪。 

具体的代码就不写上了，因为项目中存储过程的调用方法全部是封装好的（好像现在都这样，都姓3层，嘿嘿） 

原理： 

1.一维数组 

A.单纯的一维数组的话，直接建立一个table类型就可以 

  1 TYPE TYPE_VARCHAR AS TABLE OF VARCHAR2(200);

2.多维数组 

A.多维数组就要稍加修改了，如二维数组 

  1 TYPE TYPE_VARCHAR AS TABLE OF VARCHAR2(200);
  2 
  3 TYPE  TYPE_TABLE AS TABLE OF TYPE_VARCHAR;

3.java代码的实现 

A。首先是connection的问题，connection必须是OracleConnection（java.sql包下的） 

B。必须给Array添加一种数据定义（oracle.sql.ArrayDescriptor） 

C。ARRAY必须是java.sql.Array 

D。好了，开始定义ARRAY 

arrDesc = ArrayDescriptor.createDescriptor("TYPE_TABLE", getNativeConnection(conn)); 
  ARRAY arr = new ARRAY(arrDesc, getNativeConnection(conn), new Object[][]{{"test1","test2"},{"testA","testB"}}); 

从网上搜到为数不多的代码(仅供参考) 

下面代码来自ChinaUnix博客（http://blog.chinaunix.net/u2/63586/showart_703439.html） 

  1 -----------------------------------------------------------------------------------
  2 import java.sql.Connection;
  3 import java.sql.PreparedStatement;
  4 import java.sql.CallableStatement;
  5 import java.sql.ResultSet;
  6 import java.sql.SQLException;
  7 import java.sql.Types;
  8 import java.util.ArrayList;
  9 import  oracle.sql.ARRAY;
 10 import oracle.sql.ArrayDescriptor;
 11 import org.apache.tomcat.dbcp.dbcp.DelegatingConnection;
 12 public class BussinessLog {
 13 public static ArrayList<Comparable> CancelLog(String sLoginUser, Object[] arrLogID)
 14 {
 15   ArrayList<Comparable> arrList = new ArrayList<Comparable>();
 16   Connection conn = null;
 17   CallableStatement callStmt = null;
 18   String sql = null;
 19   ArrayDescriptor arrDesc = null;
 20 
 21   try
 22   {
 23    conn = DbConnectionManager.getConnection();
 24    sql = "{call P_CanceltLog(?,?,?,?)}";
 25    callStmt = conn.prepareCall(sql);
 26    arrDesc = ArrayDescriptor.createDescriptor("NUMBERTABLE", getNativeConnection(conn));
 27    ARRAY arr = new ARRAY(arrDesc, getNativeConnection(conn), arrLogID);
 28    callStmt.setString(1, sLoginUser);
 29    callStmt.setObject(2, arr, Types.ARRAY);
 30    callStmt.registerOutParameter(3, Types.VARCHAR);
 31    callStmt.registerOutParameter(4, Types.INTEGER);
 32    callStmt.execute();
 33 
 34     arrList.add(callStmt.getInt(4));
 35    arrList.add(callStmt.getString(3));
 36    return arrList;
 37   } catch (Exception e) {
 38    System.out.println(e.toString());
 39   } finally {
 40    DbAction.clear(conn, callStmt);
 41   }
 42   return arrList;
 43 }
 44 
 45 public static Connection getNativeConnection(Connection con) throws SQLException {
 46   if (con instanceof DelegatingConnection) {
 47    Connection nativeCon = ((DelegatingConnection) con).getInnermostDelegate();
 48    return (nativeCon != null ? nativeCon : con.getMetaData().getConnection());
 49   }
 50   return con;
 51 }
 52 }