java中调用存储过程【附带案例】

JDBC执行存储过程的四种情况

如何实现 JDBC调用Oracle的存储过程，从以下情况分别介绍：

[1]、只有输入IN参数，没有输出OUT参数

[2]、既有输入IN参数，也有输出OUT参数，输出是简单值（非列表）

[3]、既有输入IN参数，也有输出OUT参数，输出是列表

[4]、输入输出参数是同一个（IN OUT）

【准备工作】

创建一个测试表TMP_MICHAEL ，并插入数据，SQL如下：

create table TMP_MICHAEL

(

USER_ID VARCHAR2(20),

USER_NAME VARCHAR2(10),

SALARY NUMBER(8,2),

OTHER_INFO VARCHAR2(100)

)



insert into TMP_MICHAEL (USER_ID, USER_NAME, SALARY, OTHER_INFO)

values ('michael', 'Michael', 5000, 'http://sjsky.iteye.com');

insert into TMP_MICHAEL (USER_ID, USER_NAME, SALARY, OTHER_INFO)

values ('zhangsan', '张三', 10000, null);

insert into TMP_MICHAEL (USER_ID, USER_NAME, SALARY, OTHER_INFO)

values ('aoi_sola', '张无忌', 99999.99, 'twitter account');

insert into TMP_MICHAEL (USER_ID, USER_NAME, SALARY, OTHER_INFO)

values ('李四', '李四', 2500, null);

[一]、只有输入IN参数，没有输出OUT参数

存储过程 TEST_MICHAEL_NOOUT 的相关SQL：

CREATE OR REPLACE PROCEDURE TEST_MICHAEL_NOOUT(P_USERID IN VARCHAR2,

P_USERNAME IN VARCHAR2,

P_SALARY IN NUMBER,

P_OTHERINFO IN VARCHAR2) IS

BEGIN



INSERT INTO TMP_MICHAEL

(USER_ID, USER_NAME, SALARY, OTHER_INFO)

VALUES

(P_USERID, P_USERNAME, P_SALARY, P_OTHERINFO);



END TEST_MICHAEL_NOOUT;

/**

* 测试调用存储过程：无返回值

* @blog http://sjsky.iteye.com

* @author Michael

* @throws Exception

*/

public static void testProcNoOut() throws Exception {

System.out.println("------- start 测试调用存储过程：无返回值");

Connection conn = null;

CallableStatement callStmt = null;

try {

Class.forName(DB_DRIVER);

conn = DriverManager.getConnection(DB_CONNECTION, DB_NAME, DB_PWd);

// 存储过程 TEST_MICHAEL_NOOUT 其实是向数据库插入一条数据

callStmt = conn.prepareCall("{call TEST_MICHAEL_NOOUT(?,?,?,?)}");



// 参数index从1开始，依次 1,2,3...

callStmt.setString(1, "jdbc");

callStmt.setString(2, "JDBC");

callStmt.setDouble(3, 8000.00);

callStmt.setString(4, "http://sjsky.iteye.com");

callStmt.execute();

System.out.println("------- Test End.");

} catch (Exception e) {

e.printStackTrace(System.out);

} finally {

if (null != callStmt) {

callStmt.close();

}

if (null != conn) {

conn.close();

}

}

}

[二]、既有输入IN参数，也有输出OUT参数，输出是简单值（非列表）

存储过程 TEST_MICHAEL 的SQL如下：

CREATE OR REPLACE PROCEDURE TEST_MICHAEL(P_USERID IN VARCHAR2,

P_SALARY IN NUMBER,

P_COUNT OUT NUMBER) IS

V_SALARY NUMBER := P_SALARY;

BEGIN

IF V_SALARY IS NULL THEN

V_SALARY := 0;

END IF;

IF P_USERID IS NULL THEN

SELECT COUNT(*)

INTO P_COUNT

FROM TMP_MICHAEL T

WHERE T.SALARY >= V_SALARY;

ELSE

SELECT COUNT(*)

INTO P_COUNT

FROM TMP_MICHAEL T

WHERE T.SALARY >= V_SALARY

AND T.USER_ID LIKE '%' || P_USERID || '%';

END IF;

DBMS_OUTPUT.PUT_LINE('v_count=:' || P_COUNT);

END TEST_MICHAEL;

/**

* 测试调用存储过程：返回值是简单值非列表

* @blog http://sjsky.iteye.com

* @author Michael

* @throws Exception

*/

public static void testProcOutSimple() throws Exception {

System.out.println("------- start 测试调用存储过程：返回值是简单值非列表");

Connection conn = null;

CallableStatement stmt = null;

try {

Class.forName(DB_DRIVER);

conn = DriverManager.getConnection(DB_CONNECTION, DB_NAME, DB_PWd);



stmt = conn.prepareCall("{call TEST_MICHAEL(?,?,?)}");



stmt.setString(1, "");

stmt.setDouble(2, 3000);



// out 注册的index 和取值时要对应

stmt.registerOutParameter(3, Types.INTEGER);

stmt.execute();



// getXxx(index)中的index 需要和上面registerOutParameter的index对应

int i = stmt.getInt(3);

System.out.println("符号条件的查询结果 count := " + i);

System.out.println("------- Test End.");

} catch (Exception e) {

e.printStackTrace(System.out);

} finally {

if (null != stmt) {

stmt.close();

}

if (null != conn) {

conn.close();

}

}

}