Java调用Oracle存储过程详解

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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