Java调用带有记录类型出参的存储过程

目的：

当过程包中定义了 Type( record ), 并作为包内存储过程的出参，如何通过Java进行存储过程调用？查看了网上的案例，没有找到最终答案。本次测试中，此问题仍未解决。先记录下来，以持续跟踪。

实验过程：

存储过程包：

create or replace package pkg_test is
type TYPEINFO is record(
id    number,
name  varchar2(10)
);
prcedure test(
i_sno   in pls_integer,
o_inf  out TYPEINFO,
o_flag out varchar2,
o_msg  out varchar2
);
end pkg_test;
/
create or replace package body pkg_test is
procedure test(
i_sno   in pls_integer,
o_inf  out TYPEINFO,
o_flag out varchar2,
o_msg  out varchar2
) is
begin
select 111 id, 'James' name into o_inf from dual;
o_flag := '1';
o_msg := 'ok!';
end test;
begin
null;
end pkg_test;

Java代码：

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

import oracle.jdbc.OracleTypes;
import oracle.jdbc.driver.OracleCallableStatement;
import oracle.sql.ARRAY;
import oracle.sql.ArrayDescriptor;
import oracle.sql.STRUCT;
import oracle.sql.StructDescriptor;

import org.junit.Before;
import org.junit.Test;

public class TypeTest {
String driver = "oracle.jdbc.driver.OracleDriver";
String strUrl = "jdbc:oracle:thin:@10.0.0.1:1521:orcl";
Statement stmt = null;
ResultSet rs = null;
Connection conn = null;
//CallableStatement cstmt = null;
OracleCallableStatement cs = null;

@Before
public void init() {
try {
Class.forName(driver);
conn = DriverManager.getConnection(strUrl, "dbusr", "****");
} catch (Exception e) {
e.printStackTrace();
}
}

/**
* 返回 Record类型的包内存储过程，测试失败
*/
@Test
public void procOutTypeOfRecord() {
try {
System.out.println("start");
ArrayDescriptor ad = ArrayDescriptor.createDescriptor("PKG_TEST.TYPEINFO", conn);
System.out.println("ad = "+ad.toString());
cs = (OracleCallableStatement)conn.prepareCall("{call pkg_test.test(?,?,?,?)}");
cs.setInt(1, 50);
cs.registerOutParameter(2, OracleTypes.ARRAY);
cs.registerOutParameter(3, OracleTypes.VARCHAR);
cs.registerOutParameter(4, OracleTypes.VARCHAR);
cs.execute();
System.out.println("executed");
ARRAY t1 = cs.getARRAY(2);
String fg = cs.getString(3);
System.out.println("out flag=" + fg);

} catch (SQLException ex2) {
ex2.printStackTrace();
} catch (Exception ex2) {
ex2.printStackTrace();
} finally {
try {
if (rs != null) {
rs.close();
}
} catch(SQLException e){}
try{
if (cs != null) {
cs.close();
}
} catch(SQLException e){}
try{
if (conn != null) {
conn.close();
}
} catch(SQLException e){}

}
}

/*测试脚本*/
public static void main(String[] args){
TypeTest tt = new TypeTest();
tt.init();
tt.procOutTypeOfRecord(); //Failed, java.sql.SQLException: 无效的名称模式: PKG_TEST.TYPEINFO

}
}

报错信息：java.sql.SQLException: 无效的名称模式，应该是无法识别在package中定义的record type。

如果将此type调整为 ref cursor，则可以通过OracleTypes.CURSOR来解决问题，java代码见下：

/**
* 返回 Cursor类型的包内存储过程，测试成功
*/
@Test
public void procOutTypeOfCursor() {
try {
System.out.println("start");
cs = (OracleCallableStatement)conn.prepareCall("{call pkg_test.test(?,?,?,?)}");
cs.setInt(1, 0);
cs.registerOutParameter(2, OracleTypes.CURSOR);
cs.registerOutParameter(3, OracleTypes.VARCHAR);
cs.registerOutParameter(4, OracleTypes.VARCHAR);
cs.execute();
System.out.println("executed");
//STRUCT t1 = cs.getSTRUCT(2);
String fg = cs.getString(3);
String mg = cs.getString(4);
System.out.println("out flag=" + fg+"; msg="+mg);
if ("1".equals(fg)){
rs = (ResultSet)cs.getObject(2);
while (rs.next()){
System.out.println(rs.getString("ATYPE")+" "+rs.getString("ID"));
}
}
} catch (SQLException ex2) {
ex2.printStackTrace();
} catch (Exception ex2) {
ex2.printStackTrace();
} finally {
try {
if (rs != null) {
rs.close();
}
} catch(SQLException e){}
try{
if (cs != null) {
cs.close();
}
} catch(SQLException e){}
try{
if (conn != null) {
conn.close();
}
} catch(SQLException e){}

}
}

结论：

暂无

后记：

问题仍在分析中，欢迎大家提出建议。