Java调用Oracle存储过程详解
步骤：
1、编写Oracle存储过程
2、编写数据库获取连接工具类
3、编写简单应用调用存储过程
实现：
1、Oracle存储过程：
/*测试表*/ create table test( id varchar2(32), name varchar2(32) ); /*存储过程 插入数据*/ CREATE OR REPLACE PROCEDURE insert_procedure( PARA1 IN VARCHAR2, PARA2 IN VARCHAR2 ) AS BEGIN INSERT INTO test (id, name) VALUES (PARA1, PARA2); END insert_procedure; /*存储过程 返回结果集*/ CREATE OR REPLACE PROCEDURE select_procedure( para_id IN VARCHAR2, name OUT sys_refcursor /* 这个sys_refcursor类型在SYS.STANDARD包中 */ ) AS BEGIN OPEN name FOR SELECT * FROM test WHERE id = para_id; END;
2、JDBC工具类
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class DBUtil {
public static final String DRIVER = "oracle.jdbc.driver.OracleDriver";
public static final String URL = "jdbc:oracle:thin:@localhost:1521/orcl";
public static final String USERNAME = "pfm";
public static final String PASSWORD = "pfm";
/**
* 通过静态代码块 注册数据库驱动
*/
static {
try {
Class.forName(DRIVER);
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
/**
* 获得Connection
*
* @return
*/
public static Connection getConnection() {
Connection conn = null;
try {
conn = DriverManager.getConnection(URL, USERNAME, PASSWORD);
} catch (SQLException e) {
e.printStackTrace();
}
return conn;
}
/**
* 获得Statement
*
* @return
*/
public static Statement getStatement() {
Statement st = null;
try {
st = getConnection().createStatement();
} catch (SQLException e) {
e.printStackTrace();
}
return st;
}
/**
* 关闭ResultSet
*
* @param rs
*/
public static void closeResultSet(ResultSet rs) {
if (rs != null) {
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
/**
* 关闭Statement
*
* @param st
*/
public static void closeStatement(Statement st) {
if (st != null) {
try {
st.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
/**
* 关闭Connection
*
* @param conn
*/
public static void closeConnection(Connection conn) {
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
/**
* 关闭全部
*
* @param rs
* @param sta
* @param conn
*/
public static void closeAll(ResultSet rs, Statement sta, Connection conn) {
closeResultSet(rs);
closeStatement(sta);
closeConnection(conn);
}
}
3、调用存储过程：
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import oracle.jdbc.driver.OracleTypes;
/**
* 测试调用存储过程
*
*/
public class StoredTest {
public static void main(String[] args) {
insert_call();
//select_call();
}
/**
* 执行存储过程 插入数据
*/
public static void insert_call() {
Connection conn = DBUtil.getConnection();
PreparedStatement pst = null;
CallableStatement proc = null; // 创建执行存储过程的对象
try {
proc = conn.prepareCall("{ call insert_procedure(?,?) }");
proc.setString(1, "1"); // 设置第一个输入参数
proc.setString(2, "hello call"); // 设置第一个输入参数
proc.execute();// 执行
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
// 关闭IO流
proc.close();
DBUtil.closeAll(null, pst, conn);
} catch (Exception e) {
e.printStackTrace();
}
}
}
/**
* 执行存储过程 查询数据
*/
public static void select_call() {
Connection conn = DBUtil.getConnection();
CallableStatement stmt;
try {
stmt = conn.prepareCall("{ call select_procedure(?, ?) }"); // 用此调用方法不能实现多行语法
stmt.setString(1, "1");
stmt.registerOutParameter(2, OracleTypes.CURSOR);
stmt.execute();
ResultSet rs = (ResultSet) stmt.getObject(2);
while (rs.next()) {
System.out.println(rs.getString("name"));
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtil.closeConnection(conn);
}
}
}
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