调用Oracle存储过程的Java源代码

内容摘要

本文讲述 Java 调用 Oracle 存储过程！ConnUtils连接工具类：用来获取连接、释放资源

文章正文

本文讲述 Java 调用 Oracle 存储过程！

ConnUtils连接工具类：用来获取连接、释放资源

package com.ljq.test;

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

public final class ConnUtils {
private static String url = "jdbc:oracle:thin:@localhost:1521:orcl";
private static String user = "test";
private static String password = "test";

private ConnUtils() {
}

// 注册驱动 (只做一次)
static {
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
} catch (ClassNotFoundException e) {
throw new ExceptionInInitializerError(e);
}
}

public static Connection getConnection() throws SQLException {
return DriverManager.getConnection(url, user, password);
}

public static void free(ResultSet rs, Statement st, Connection conn) {
try {
if (rs != null)
rs.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
if (st != null)
st.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
if (conn != null)
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
}

创建带出参存储过程代码：

--带出参存储过程
CREATE OR REPLACE PROCEDURE stu_proc(v_name OUT VARCHAR2) AS
BEGIN
SELECT o.sname INTO v_name FROM student o where o.id = 2;
END;

使用java调用带出参的存储过程

package com.ljq.test;

import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Types;

public class ProceTest {

public static void main(String[] args) throws Exception {
Connection conn = null;
CallableStatement statement = null;
String sql = "{call stu_proc(?)}";
try {
conn = ConnUtils.getConnection();
statement = conn.prepareCall(sql);
statement.registerOutParameter(1, Types.VARCHAR);
statement.executeUpdate();
//输出：lisi
String sname = statement.getString(1);
System.out.println(sname);
} catch (SQLException e) {
e.printStackTrace();
}finally{
ConnUtils.free(null, statement, conn);
}
}

}

创建带出入参存储过程代码

--带出入参存储过程
CREATE OR REPLACE PROCEDURE stu_proc(v_id IN NUMBER, v_name OUT VARCHAR2) AS
BEGIN
SELECT o.sname INTO v_name FROM student o where o.id = v_id;
END;

使用JAVA调用带出入参存储过程

package com.ljq.test;

import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Types;

public class ProceTest {

public static void main(String[] args) throws Exception {
Connection conn = null;
CallableStatement statement = null;
String sql = "{call stu_proc(?, ?)}";
try {
conn = ConnUtils.getConnection();
statement = conn.prepareCall(sql);
statement.setInt(1, 1);
statement.registerOutParameter(2, Types.VARCHAR);
statement.executeUpdate();
//输出：zhangsan
String sname = statement.getString(2);
System.out.println(sname);
} catch (SQLException e) {
e.printStackTrace();
}finally{
ConnUtils.free(null, statement, conn);
}
}
}

代码注释

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