Oracle 存储过程 实现 JAVA中的LIST输入参数

原文出自：http://blog.csdn.net/mantisXF/archive/2008/09/07/2896524.aspx

今天周末没事做便想来试试JAVA与ORACLE的结合程度，结果反映这两件利器结合起来真的很厉害，前无古人，后无来者。嘿嘿～～

因为上周末帮JAVA组的同事实现了一个输入数值->update记录->返回游标的存储过程，这些过程很简单。但当时就考虑到了一个问题，因为有在JAVA代码中调用这个存储过程之前先要从一个XLS文件中读取数据然后用INSERT插入ORACLE数据库表中。但发现在JAVA代码实现的方式是一条条记录地INSERT进ORACLE，当时就提出了这个问题，想在JAVA那些传个数组对象进ORACLE存储过程中，然后在ORACLE存储过程代码中分解这个数组的数据，再执行其他的操作。因此就有了下面的JAVA＋ORACLE实践日记了，嘿嘿，好久没搞JAVA了，ArrayList都不会用了。不多说，看代码：

首先创建两个ORACLE数据类型，目的就是为了存储结果集数据(数组等)：

CREATE OR REPLACE TYPE CDW_OBJECT AS OBJECT(
FISCAL_MONTH VARCHAR2(10),
CUSTOMER_NUMBER VARCHAR2(10),
CUSTOMER_NAME VARCHAR2(50)
);

CREATE OR REPLACE TYPE CDW_TABLE AS TABLE OF CDW_OBJECT;

表结果及数据：

SQL> DESC CDW_AR_SA_EXPOSURE_T;
Name Type Nullable Default Comments
--------------- ------------ -------- ------- --------
FISCAL_MONTH VARCHAR2(10) Y
CUSTOMER_NUMBER VARCHAR2(10) Y
CUSTOMER_NAME VARCHAR2(50) Y

SQL> DESC CDW_AR_SA_EXPOSURE_FACT;
Name Type Nullable Default Comments
--------------- ------------ -------- ------- --------
FISCAL_MONTH VARCHAR2(10) Y
CUSTOMER_NUMBER VARCHAR2(10) Y
CUSTOMER_NAME VARCHAR2(50) Y

SQL>

表结构及测试数据代码：
CREATE TABLE CDW_AR_SA_EXPOSURE_FACT (FISCAL_MONTH VARCHAR2(10),CUSTOMER_NUMBER VARCHAR2(10),CUSTOMER_NAME VARCHAR2(50));

INSERT INTO CDW_AR_SA_EXPOSURE_FACT VALUES('200708','1001','XIEFENG');
INSERT INTO CDW_AR_SA_EXPOSURE_FACT VALUES('200705','1002','MANTISXF');
INSERT INTO CDW_AR_SA_EXPOSURE_FACT VALUES('200706','2001','CHENGUOZHENG');
INSERT INTO CDW_AR_SA_EXPOSURE_FACT VALUES('200808','3001','XIAOFANG');
INSERT INTO CDW_AR_SA_EXPOSURE_FACT VALUES('200809','1056','ZIMING');
INSERT INTO CDW_AR_SA_EXPOSURE_FACT VALUES('200810','7701','BOSHI');
INSERT INTO CDW_AR_SA_EXPOSURE_FACT VALUES('200811','1821','BOGE');
INSERT INTO CDW_AR_SA_EXPOSURE_FACT VALUES('200903','2431','FEIZAI');

INSERT INTO CDW_AR_SA_EXPOSURE_T VALUES('200811','3301','BOSHI_HAOREN');
INSERT INTO CDW_AR_SA_EXPOSURE_T VALUES('200812','1921','BOGE_HAOREN');
INSERT INTO CDW_AR_SA_EXPOSURE_T VALUES('200905','6666','FEIZAI_HAOREN');

COMMIT;

存储过程代码：

CREATE OR REPLACE PROCEDURE SP_CARC_UPLOAD_FILE_TEST(OUT_CURSOR OUT SYS_REFCURSOR, V_ARRAY IN CDW_TABLE) AS
-- DECLARE THE VARIABLE AND CURSOR TYPE
V_STEP VARCHAR2(100);
VCOUNTS NUMBER;

BEGIN
V_STEP := 'INSERT RECORDS FROM ARRAY';
FOR I IN 1..V_ARRAY.COUNT LOOP
INSERT INTO CDW_AR_SA_EXPOSURE_T VALUES
(
V_ARRAY(I).FISCAL_MONTH,
V_ARRAY(I).CUSTOMER_NUMBER,
V_ARRAY(I).CUSTOMER_NAME
);

DBMS_OUTPUT.PUT_LINE('FISCAL_MONTH: '||V_ARRAY(I).FISCAL_MONTH);
DBMS_OUTPUT.PUT_LINE('CUSTOMER_NUMBER: '||V_ARRAY(I).CUSTOMER_NUMBER);
DBMS_OUTPUT.PUT_LINE('CUSTOMER_NAME: '||V_ARRAY(I).CUSTOMER_NAME);

IF MOD(I,1000) = 0 THEN
COMMIT;
END IF;
END LOOP;
COMMIT;

V_STEP := 'GET THE INVALID CUSTOMER COUNT';
SELECT COUNT(1)
INTO VCOUNTS
FROM CDW_AR_SA_EXPOSURE_T STG
WHERE NOT EXISTS (SELECT 1
FROM CDW_AR_SA_EXPOSURE_FACT FACT
WHERE STG.CUSTOMER_NUMBER = FACT.CUSTOMER_NUMBER
AND STG.FISCAL_MONTH = FACT.FISCAL_MONTH);

--FETCH CUR_MATCH_USERID INTO RT_CUR_MATCH_USERID;

IF VCOUNTS = 0 THEN
V_STEP := 'UPDATE USER_INFORMATION';
DBMS_OUTPUT.PUT_LINE('UPDATED SQL COUNT: ' || SQL%ROWCOUNT);
OPEN OUT_CURSOR FOR SELECT DUMMY AS CUSTOMER_NUMBER FROM DUAL WHERE ROWNUM < 1;

ELSE
V_STEP := 'RETURN CURSOR WHICH STORED ALL INVILD CUSTOMER_DETAILS';
OPEN OUT_CURSOR FOR
SELECT CUSTOMER_NUMBER
FROM CDW_AR_SA_EXPOSURE_T STG
WHERE NOT EXISTS (SELECT 1
FROM CDW_AR_SA_EXPOSURE_FACT FACT
WHERE STG.CUSTOMER_NUMBER = FACT.CUSTOMER_NUMBER
AND STG.FISCAL_MONTH = FACT.FISCAL_MONTH);
END IF;

V_STEP := 'DELETE DATA FROM TABLE CDW_AR_SA_EXPOSURE_T';
/*DELETE FROM CDW.CDW_AR_SA_EXPOSURE_T;
COMMIT;*/

EXCEPTION
WHEN OTHERS THEN
BEGIN
ROLLBACK;
--EXECUTE IMMEDIATE 'TRUNCATE TABLE CDW_AR_SA_EXPOSURE_T REUSE STORAGE';
DBMS_OUTPUT.PUT_LINE('Error at :' || V_STEP);
DBMS_OUTPUT.PUT_LINE(SQLCODE || ' : ' || SQLERRM);
END;

END SP_CARC_UPLOAD_FILE_TEST;

JAVA 代码:

import oracle.sql.*;
import java.sql.*;
import oracle.jdbc.driver.*;
import java.util.*;

public class ArrayTest {
static public Connection conn;
static public OracleCallableStatement stmt = null;
public Connection getConnectionDB()throws SQLException, ClassNotFoundException{
Class.forName("oracle.jdbc.driver.OracleDriver");

// B. 创新新数据库连接
conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:Oraxf", "scott", "tiger");
DatabaseMetaData md = conn.getMetaData();
System.out.println("数据库版本：");
System.out.println("------------------------------------------------");
System.out.println(md.getDatabaseProductVersion());
System.out.println();
System.out.println("驱动程序名称与版本：");
System.out.println("------------------------------------------------");
System.out.print(md.getDriverName() + " " + md.getDriverVersion());

return conn;

}

public static void main(String[] my)throws SQLException, ClassNotFoundException{
try{

ArrayTest at = new ArrayTest();
at.getConnectionDB();

ArrayList myArray = new ArrayList();
String[][] values = {
{"200811","3301","BOSHI_HAOREN"},
{"200812","1921","BOGE_HAOREN"},
{"200905","6666","FEIZAI_HAOREN"}
};
myArray.add(values);
ARRAY array = getArray("CDW_OBJECT","CDW_TABLE",myArray);
stmt = (OracleCallableStatement)conn.prepareCall("begin SP_CARC_UPLOAD_FILE_TEST(?,?); end;");
stmt.registerOutParameter(1, OracleTypes.CURSOR,"OUT_CURSOR");
stmt.setArray(2, array);
stmt.execute();

ResultSet rs = (ResultSet)stmt.getObject(1);

while(rs.next()){
String CUSTOMER_NUMBER = rs.getString("CUSTOMER_NUMBER");
System.out.println("CUSTOMER_NUMBER: "+CUSTOMER_NUMBER);
}

at.closeConnectionDB();
}
catch(Exception e){
e.printStackTrace();
}
}

public static ARRAY getArray(String OracleObj,String OracleTbl, ArrayList alist) throws Exception{

// my code
ARRAY list = null;

if (alist != null && alist.size() > 0){
StructDescriptor structdesc = new StructDescriptor(OracleObj,conn);
//STRUCT[] structs = new STRUCT[alist.size()];
Object[] result = null;
//String[][] myArray = new String[alist.size()][3];
//alist.toArray(myArray);
/* for(int i=0;i<alist.size();i++){
String obj[] = (String [])alist.get(i);
result = new Object[3];
result[0] = obj[0].toString();
result[1] = obj[1].toString();
result[2] = obj[2].toString();

structs[i] = new STRUCT(structdesc,conn,result);
}
for(int i=0;i<alist.size();i++){
ResultSet rs = (ResultSet)alist.get(i);
for(int j=0;j<3;j++){
result = new Object[3];
result[0] = rs.getObject(1).toString();
result[1] = rs.getObject(2).toString();
result[2] = rs.getObject(3).toString();
}
structs[i] = new STRUCT(structdesc,conn,result);
}*/

Object[] o1 = new Object[]{"200811","3301","BOSHI_HAOREN"};
Object[] o2 = new Object[]{"200812","1921","BOGE_HAOREN"};
Object[] o3 = new Object[]{"200905","6666","FEIZAI_HAOREN"};

STRUCT s1 = new STRUCT(structdesc, conn, o1);
STRUCT s2 = new STRUCT(structdesc, conn, o2);
STRUCT s3 = new STRUCT(structdesc, conn, o3);

STRUCT[] structs = {s1,s2,s3};
/*
for(int i=0;i<alist.size();i++){
result = new Object[3];
result[0] = myArray[i][0].toString();
result[1] = myArray[i][1].toString();
result[2] = myArray[i][2].toString();

structs[i] = new STRUCT(structdesc,conn,result);
}*/
ArrayDescriptor arraydesc = new ArrayDescriptor(OracleTbl,conn);
list = new ARRAY(arraydesc,conn,structs);
}
return list;

}

public void closeConnectionDB()throws SQLException{
conn.close();
}
}

输出结果：

-- JAVA 控制台

数据库版本：
------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options

驱动程序名称与版本：
------------------------------------------------
Oracle JDBC driver 10.1.0.2.0CUSTOMER_NUMBER: 6666
CUSTOMER_NUMBER: 1921
CUSTOMER_NUMBER: 3301

-- 数据库SQLPLUS

SQL> SELECT * FROM CDW_AR_SA_EXPOSURE_T;

FISCAL_MONTH CUSTOMER_NUMBER CUSTOMER_NAME
------------ --------------- --------------------------------------------------
200811 3301 BOSHI_HAOREN
200812 1921 BOGE_HAOREN
200905 6666 FEIZAI_HAOREN

SQL>

在跑JAVA代码时可能会出现相关问题：

java程序中使用Oracle的对象：
StructDescriptor structdesc = new StructDescriptor(OracleObj,conn);

出现这个错误：
java.sql.SQLException: Fail to construct descriptor: Invalid arguments
java.sql.SQLException: 无法构造描述符: Invalid arguments

原因为数据库连接dbConn为空，可是这种Exception着实有点让人迷糊。切记：友好的提示信息对问题的定位和解决非常重要。

如果有什么问题欢迎指出。希望对大家有所帮助。

Good luck~~