java代码调用oracle存储过程

2021-10-09 02:36:44

一、简介

　　与调用mysql存储过程类型过程都是如下

　　1、创建连接 Connection conn = DriverManager.getConnection(url, user, password);

　　2、创建CallableStatement CallableStatement statement = conn.prepareCall(sql);

　　3、设置参数

　　　　statement.setInt(1, id);
　　　　statement.registerOutParameter(2, Types.VARCHAR);
　　　　statement.registerOutParameter(3, Types.INTEGER);
　　　　statement.registerOutParameter(4, Types.VARCHAR);

　　4、执行

　　　　statement.execute(); 或 statement.executeUpdate();

　　5、获取返回

　　　　int age = statement.getInt(3);

　　只是oracle存储过程有的结果集是以游标的方式返回，此时我们需要调用ResultSet rs = (ResultSet) statement.getObject(1);方法回去结果集

二、代码

　　以下存储过程表结构如下：

DROP TABLE person ;
CREATE TABLE person (
id NUMBER(11) NOT NULL ,
username VARCHAR2(255 ) NULL ,
age NUMBER(11) NULL ,
password VARCHAR2(255) NULL ,
PRIMARY KEY (id)
)

　　1、查询所有记录

　　存储过程代码如下：

create or replace procedure pro_person_findall(
       p_cursor out pkg_const.r_cursor
)
is
begin
  open p_cursor for
  select *  from person;
  exception
  when others then
    DBMS_OUTPUT.PUT_LINE('获取信息发生错误');
end pro_person_findall;

　　调用代码如下

public static void findAll() {
        String driver = "oracle.jdbc.driver.OracleDriver";
        String url = "jdbc:oracle:thin:@127.0.0.1:1521:wuxx";
        String user = "wuxx";
        String password = "wuxx";
        try {
            Class.forName(driver);
            Connection conn = DriverManager.getConnection(url, user, password);
            String sql = "{call pro_person_findall2(?)}";
            CallableStatement statement = conn.prepareCall(sql);
            statement.registerOutParameter(1, oracle.jdbc.OracleTypes.CURSOR);
            statement.execute();
            ResultSet rs = (ResultSet) statement.getObject(1);
            ResultSetMetaData rmd = rs.getMetaData();
            System.out.print(rmd.getColumnName(1) + "    ");
            System.out.print(rmd.getColumnName(2) + "    ");
            System.out.print(rmd.getColumnName(3) + "    ");
            System.out.print(rmd.getColumnName(4) + "\n");
            while (rs.next()) {
                System.out.print(rs.getInt("id") + "    ");
                System.out.print(rs.getString("username") + "    ");
                System.out.print(rs.getInt("age") + "    ");
                System.out.print(rs.getString("password") + " \n");
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

　　2、查询一条记录

　　存储过程如下

CREATE OR REPLACE PROCEDURE PRO_PERSON_FINDBYID(
    v_id IN NUMBER,
    v_username    OUT    VARCHAR2,
    v_age    OUT    NUMBER,
    v_password OUT    VARCHAR2,
   p_count out number
)
AS 
BEGIN
    SELECT username, age, password INTO v_username, v_age, v_password  from person where id = v_id;
  p_count := 1; 
  exception
    when others then
    p_count := 0;
END;

　　调用代码如下：

public static void find(Integer id) {
        String driver = "oracle.jdbc.driver.OracleDriver";
        String url = "jdbc:oracle:thin:@127.0.0.1:1521:wuxx";
        String user = "wuxx";
        String password = "wuxx";
        try {
            Class.forName(driver);
            Connection conn = DriverManager.getConnection(url, user, password);
            String sql = "{call PRO_PERSON_FINDBYID(?,?,?,?,?)}";
            CallableStatement statement = conn.prepareCall(sql);
            BigDecimal rid = new BigDecimal(id);
            statement.setInt(1, id);
            statement.registerOutParameter(2, oracle.jdbc.OracleTypes.VARCHAR);
            statement.registerOutParameter(3, oracle.jdbc.OracleTypes.NUMBER);
            ; //
            statement.registerOutParameter(4, oracle.jdbc.OracleTypes.VARCHAR);
            statement.registerOutParameter(5, oracle.jdbc.OracleTypes.NUMBER);
            statement.execute();
            int flag = statement.getInt(5);
            if (flag != 0)
                System.out.println(statement.getString(2) + "  "
                        + statement.getInt(3) + "  " + statement.getString(4));
            else
                System.out.println("data not found!");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

　　3、增加记录

　　存储过程代码如下：

create or replace procedure pro_person_insert(
       p_id number,
       p_username varchar2,
       p_age number,
       p_password varchar2,
       p_count out number
)
is
begin
   insert into person (id, username, age, password) values(p_id, p_username, p_age, p_password);
   p_count := SQL%ROWCOUNT;  -- SQL%ROWCOUNT为 隐士游标的属性
   commit;
   exception
     when others then
     p_count := 0;
end pro_person_insert;

　　调用代码如下：

public static void add(Integer id, String username, int age,
            String u_password) {
        String driver = "oracle.jdbc.driver.OracleDriver";
        String url = "jdbc:oracle:thin:@127.0.0.1:1521:wuxx";
        String user = "wuxx";
        String password = "wuxx";
        try {
            Class.forName(driver);
            Connection conn = DriverManager.getConnection(url, user, password);
            String sql = "{call pro_person_insert(?,?,?,?,?)}";
            CallableStatement statement = conn.prepareCall(sql);
            statement.setInt(1, id);
            statement.setString(2, username);
            statement.setInt(3, id);
            statement.setString(4, u_password);
            statement.registerOutParameter(5, oracle.jdbc.OracleTypes.NUMBER);// 增加记录是否成功的标记,1 成功，0失败
            statement.execute();
            System.out.println(statement.getInt(5));
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

　　4、更新记录

　　存储过程代码如下：

create or replace procedure pro_person_update(
       p_id number,
       p_age number,
       p_password varchar2,
       p_count out number
)
is
begin
  update person set age = p_age, password = p_password where id = p_id;
  p_count := SQL%ROWCOUNT;
  commit;
  exception
    when no_data_found then
      p_count := 0;
    when others then
      p_count := -1;
end pro_person_update;

　　调用代码如下：

public static void update(Integer id, int age, String u_password) {
        String driver = "oracle.jdbc.driver.OracleDriver";
        String url = "jdbc:oracle:thin:@127.0.0.1:1521:wuxx";
        String user = "wuxx";
        String password = "wuxx";
        try {
            Class.forName(driver);
            Connection conn = DriverManager.getConnection(url, user, password);
            String sql = "{call pro_person_update(?,?,?,?)}";
            CallableStatement statement = conn.prepareCall(sql);
            statement.setInt(1, id);
            statement.setInt(2, age);
            statement.setString(3, u_password);
            statement.registerOutParameter(4, oracle.jdbc.OracleTypes.NUMBER);// 增加记录是否成功的标记
            statement.execute();
            System.out.println(statement.getInt(4));
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

　　5、删除记录

　　存储过程代码如下：

create or replace procedure pro_person_delete(
       p_id number,
       p_count out number
)
is
begin
  delete from person where id = p_id;
  p_count := SQL%ROWCOUNT;
  commit;
  exception
    when no_data_found then
      p_count := 0;
    when others then
      p_count := -1;
end pro_person_delete;

　　调用代码如下：

public static void delete(Integer id) {
        String driver = "oracle.jdbc.driver.OracleDriver";
        String url = "jdbc:oracle:thin:@127.0.0.1:1521:wuxx";
        String user = "wuxx";
        String password = "wuxx";
        try {
            Class.forName(driver);
            Connection conn = DriverManager.getConnection(url, user, password);
            String sql = "{call pro_person_delete(?,?)}";
            CallableStatement statement = conn.prepareCall(sql);
            statement.setInt(1, id);
            statement.registerOutParameter(2, oracle.jdbc.OracleTypes.NUMBER);// 增加记录是否成功的标记
            statement.execute();
            System.out.println(statement.getInt(2));
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

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