正文
JAVA调用数据库存储过程
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下面将举出JAVA对ORACLE数据库存储过程的调用
ConnUtils连接工具类：用来获取连接、释放资源
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package com.ljq.test;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
/**
* 连接工具类
*
* ConnUtils类声明为final类说明此类不可以被继承
*
* @author jiqinlin
*
*/
public final class ConnUtils {
private static String url = "jdbc:oracle:thin:@localhost:1521:orcl";
private static String user = "test";
private static String password = "test";
/**
* 说明要访问此类只能通过static或单例模式
*/
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);
}
}
/**
* 获取Connection对象
*
* @return
* @throws SQLException
*/
public static Connection getConnection() throws SQLException {
return DriverManager.getConnection(url, user, password);
}
/**
* 释放资源
*
* @param rs
* @param st
* @param conn
*/
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();
}
}
}
}
}
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创建带出参存储过程代码：
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--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;
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使用java调用带出参的存储过程
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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);
}
}
}
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创建带出入参存储过程代码
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--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;
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使用JAVA调用带出入参存储过程
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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);
}
}
}
