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JAVA 调用 存储过程

 2013/7/17 12:13:18  byri  程序员俱乐部  我要评论(0)
  • 摘要:一:无返回值的存储过程存储过程为:CREATEORREPLACEPROCEDURETESTA(PARA1INVARCHAR2,PARA2INVARCHAR2)ASBEGININSERTINTOHYQ.B_ID(I_ID,I_NAME)VALUES(PARA1,PARA2);ENDTESTA;然后呢,在java里调用时就用下面的代码:packagecom.hyq.src;importjava.sql.*;importjava.sql.ResultSet
  • 标签:Java 过程 存储过程

class="MsoNormal" style="margin: 0cm 0cm 0pt; font-family: Tahoma, Verdana, Geneva, Arial, Helvetica, sans-serif; font-size: 13px; line-height: 18px;">一:无返回值的存储过程

存储过程为:

CREATE OR REPLACE PROCEDURE TESTA(PARA1 IN?VARCHAR2,PARA2 IN?VARCHAR2)??AS

BEGIN

???INSERT INTO HYQ.B_ID (I_ID,I_NAME) VALUES (PARA1, PARA2);

END TESTA;

然后呢,在java里调用时就用下面的代码:

package com.hyq.src;

?

import java.sql.*;

import java.sql.ResultSet;

?

public class TestProcedureOne {

??public TestProcedureOne() {

??}

??public static void main(String[] args ){

????String driver = "oracle.jdbc.driver.OracleDriver";

????String strUrl = "jdbc:oracle:thin:@127.0.0.1:1521: hyq ";

????Statement stmt = null;

????ResultSet rs = null;

????Connection conn = null;

????CallableStatement cstmt = null;

?

????try {

??????Class.forName(driver);

??????conn =??DriverManager.getConnection(strUrl, " hyq ", " hyq ");

??????CallableStatement proc = null;

??????proc = conn.prepareCall("{ call HYQ.TESTA(?,?) }");

??????proc.setString(1, "100");

??????proc.setString(2, "TestOne");

??????proc.execute();

????}

????catch (SQLException ex2) {

??????ex2.printStackTrace();

????}

????catch (Exception ex2) {

??????ex2.printStackTrace();

????}

????finally{

??????try {

????????if(rs != null){

??????????rs.close();

??????????if(stmt!=null){

????????????stmt.close();

??????????}

??????????if(conn!=null){

????????????conn.close();

??????????}

????????}

??????}

??????catch (SQLException ex1) {

??????}

????}

??}

}

当然了,这就先要求要建张表TESTTB,里面两个字段(I_IDI_NAME)。

二:有返回值的存储过程(非列表)

存储过程为:

CREATE OR REPLACE PROCEDURE TESTB(PARA1 IN?VARCHAR2,PARA2 OUT VARCHAR2)??AS

BEGIN

???SELECT INTO PARA2 FROM TESTTB WHERE I_ID= PARA1;

END TESTB;

java里调用时就用下面的代码:

package com.hyq.src;

?

public class TestProcedureTWO {

??public TestProcedureTWO() {

??}

??public static void main(String[] args ){

????String driver = "oracle.jdbc.driver.OracleDriver";

????String strUrl = "jdbc:oracle:thin:@127.0.0.1:1521:hyq";

????Statement stmt = null;

????ResultSet rs = null;

????Connection conn = null;

????try {

??????Class.forName(driver);

??????conn =??DriverManager.getConnection(strUrl, " hyq ", " hyq ");

??????CallableStatement proc = null;

??????proc = conn.prepareCall("{ call HYQ.TESTB(?,?) }");

??????proc.setString(1, "100");

??????proc.registerOutParameter(2, Types.VARCHAR);

??????proc.execute();

??????String testPrint = proc.getString(2);

??????System.out.println("=testPrint=is="+testPrint);

????}

????catch (SQLException ex2) {

??????ex2.printStackTrace();

????}

????catch (Exception ex2) {

??????ex2.printStackTrace();

????}

????finally{

??????try {

????????if(rs != null){

??????????rs.close();

??????????if(stmt!=null){

????????????stmt.close();

??????????}

??????????if(conn!=null){

????????????conn.close();

??????????}

????????}

??????}

??????catch (SQLException ex1) {

??????}

????}

??}

}

?

}

注意,这里的proc.getString(2)中的数值2并非任意的,而是和存储过程中的out列对应的,如果out是在第一个位置,那就是proc.getString(1),如果是第三个位置,就是proc.getString(3),当然也可以同时有多个返回值,那就是再多加几个out参数了。

三:返回列表

由于oracle存储过程没有返回值,它的所有返回值都是通过out参数来替代的,列表同样也不例外,但由于是集合,所以不能用一般的参数,必须要用pagkage.所以要分两部分,

1,??建一个程序包。如下:

CREATE OR REPLACE PACKAGE TESTPACKAGE??AS

?TYPE Test_CURSOR IS REF CURSOR;

end TESTPACKAGE;

2,建立存储过程,存储过程为:

CREATE OR REPLACE PROCEDURE TESTC(p_CURSOR out TESTPACKAGE.Test_CURSOR) IS

BEGIN

????OPEN p_CURSOR FOR SELECT * FROM HYQ.TESTTB;

END TESTC;

可以看到,它是把游标(可以理解为一个指针),作为一个out?参数来返回值的。

java里调用时就用下面的代码:

package com.hyq.src;

import java.sql.*;

import java.io.OutputStream;

import java.io.Writer;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import oracle.jdbc.driver.*;

?

?

public class TestProcedureTHREE {

??public TestProcedureTHREE() {

??}

??public static void main(String[] args ){

????String driver = "oracle.jdbc.driver.OracleDriver";

????String strUrl = "jdbc:oracle:thin:@127.0.0.1:1521:hyq";

????Statement stmt = null;

????ResultSet rs = null;

????Connection conn = null;

?

????try {

??????Class.forName(driver);

??????conn =??DriverManager.getConnection(strUrl, "hyq", "hyq");

?

??????CallableStatement proc = null;

??????proc = conn.prepareCall("{ call hyq.testc(?) }");

??????proc.registerOutParameter(1,oracle.jdbc.OracleTypes.CURSOR);

??????proc.execute();

??????rs = (ResultSet)proc.getObject(1);

?

??????while(rs.next())

??????{

??????????System.out.println("<tr><td>" + rs.getString(1) + "</td><td>"+rs.getString(2)+"</td></tr>");

??????}

????}

????catch (SQLException ex2) {

??????ex2.printStackTrace();

????}

????catch (Exception ex2) {

??????ex2.printStackTrace();

????}

????finally{

??????try {

????????if(rs != null){

??????????rs.close();

??????????if(stmt!=null){

????????????stmt.close();

??????????}

??????????if(conn!=null){

????????????conn.close();

??????????}

????????}

??????}

??????catch (SQLException ex1) {

??????}

????}

??}

}

在这里要注意,在执行前一定要先把oracle的驱动包放到class路径里,否则会报错的。

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