Question

我试图调用一个接收多个字符串类型和一个对象表的存储过程，并返回一个对象表。这是我的类型：

create type recipientlist as object (
    precedence varchar2(2), name varchar2(128), msgType varchar2(3));
create type recipientlist_t as TABLE of recipientlist;
create type recipientclient  as object (pla varchar2(128), client varchar2(20));
create type recipientclientlist_t as table of recipientclient;

这是我的代码：

import java.util.ArrayList;
import java.sql.Array;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.sql.SQLException;
import java.sql.Types;

import oracle.jdbc.*;
import oracle.jdbc.oracore.OracleTypeCOLLECTION;
import oracle.jdbc.pool.OracleDataSource;
import oracle.sql.ARRAY;
import oracle.sql.ArrayDescriptor;



class OadUtilities {

    public static void main(String[] args) throws SQLException{

         OracleDataSource ods = new OracleDataSource();
         ods.setURL("jdbc:oracle:thin:username/password@localhost:1521/myservicename");

         Connection conn = ods.getConnection();
         CallableStatement proc =
         conn.prepareCall("{call extractAttributes(?,?,?,?,?,?)}");

         ArrayDescriptor arrDesc1 =
                    ArrayDescriptor.createDescriptor("RECIPIENTLIST_T", conn);
         <del>ArrayDescriptor arrDesc2 =
                    ArrayDescriptor.createDescriptor("RECIPIENTCLIENTLIST_T", conn);</del>
         // instead of the ArrayDescriptor I use a StructDescriptor with ResultSetMetaData
         StructDescriptor structDesc =
        StructDescriptor.createDescriptor("RECIPIENTCLIENT", conn);
     ResultSetMetaData metaData = structDesc.getMetaData();

         String[] myRecipientData = {"TO","ADDRESS","LETTER"};
         String[][] myRecipientDataArray = { myRecipientData };
         Array myRecipientList = new ARRAY(arrDesc1, conn, myRecipientDataArray);

         <del>String[] myClientData = new String[2];
         String[][] myClientDataArray = { myClientData };
         Array myClientList = new ARRAY(arrDesc2, conn, myClientDataArray);</del>

         proc.setString(1, "X");
         proc.setString(2, "ABC DEF GHI");
         proc.setString(3, "JK LM NO");
         proc.setString(4, "PQ");
         proc.setArray(5, myRecipientList);
         proc.registerOutParameter(6, Types.ARRAY);
         <del>proc.setArray(6, myClientList);</del>
         proc.registerOutParameter(6, Types.ARRAY, "RECIPIENTCLIENTLIST_T");

         ResultSet rset = proc.executeQuery();

         <del>while (rset.next()) {
             System.out.println("ADDRESSEE = " + rset.getArray(1));
             System.out.println("CLIENT = " + rset.getArray(2));
         } </del>

     // elements are java.sql.Structs
     Object[] data = (Object[]) ((Array) proc.getObject(6)).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;
     }
     System.out.println("---");      

      }

             // close the result set, the statement and connect
             rset.close();
             conn.close();

    }

}

当我运行它时，我明白了：

Exception in thread "main" java.sql.SQLException: ORA-03115: unsupported network datatype or    representation

at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:439)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:395)
at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:802)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:436)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:186)
at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:521)
at oracle.jdbc.driver.T4CCallableStatement.doOall8(T4CCallableStatement.java:202)
at oracle.jdbc.driver.T4CCallableStatement.executeForRows(T4CCallableStatement.java:1005)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1307)
at       oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3449)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3493)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1491)
at oadUtilities.OadUtilities.main(OadUtilities.java:50)

我怀疑使用数组描述符的东西不是很正确，但它们都是正确构建的，所以也许它是我传入的null数组的返回值？ Haven没有发现任何谷歌搜索显示出复杂的收藏品，所以我不知所措。

更新：在查看我在下面提到的网站上的代码之后，我写了这篇文章，它完美无缺。

如何通过jdbc发送和接收Oracle集合

0 个答案: