create table users_ning(id primary key auto_increment,pwd int);

 insert into users_ning values(id,1234);

  insert into users_ning values(id,12345);

 insert into users_ning values(id,12);

 insert into users_ning values(id,123);

  CREATE  PROCEDURE login_ning(IN p_id int,IN p_pwd int,OUT flag int)

BEGIN

DECLARE	v_pwd int;

  select pwd INTO v_pwd from users_ning

  where id = p_id;

 if v_pwd = p_pwd then

set flag:=1;

  else

select v_pwd;

  set flag := 0;

  end if;

END 

package demo20130528;

import java.sql.*;

import demo20130526.DBUtils;

/**

 * 測试JDBC API调用过程

 * @author tarena

 *

 */

public class ProcedureDemo2 {

  /**

   * @param args

 * @throws Exception

   */

  public static void main(String[] args) throws Exception {

    System.out.println(login(123, 1234));

  }

  /**

   * 调用过程,实现登录功能

   * @param id 考生id

   * @param pwd 考试密码

   * @return if成功:1; if密码错:0; if没实用户:-1

 * @throws Exception

   */

  public static int login(int id, int pwd) throws Exception{

    int flag = -1;

    String sql = "{call login_ning(?,?

,?)}";//*****

    Connection conn = DBUtils.getConnMySQL();

    CallableStatement stmt = null;

    try{

      stmt = conn.prepareCall(sql);

      //传递输入參数

      stmt.setInt(1, id);

      stmt.setInt(2, pwd);

      //注冊输出參数,第三个占位符的数据类型是整型

      stmt.registerOutParameter(3, Types.INTEGER);//*****

      //运行过程

      stmt.execute();

      //获得过程运行后的输出參数

      flag = stmt.getInt(3);//*****

    }catch(Exception e){

      e.printStackTrace();

    }finally{

    stmt.close();

    DBUtils.dbClose();

    }

    return flag;

  }

}

</pre><pre name="code" class="java">
</pre><pre name="code" class="java">
package demo20130526;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.sql.Connection;

import java.sql.DatabaseMetaData;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.ResultSetMetaData;

import java.sql.SQLException;

import java.sql.Statement;

import java.util.Properties;

public class DBUtils {

<span style="white-space:pre">	</span>static Connection conn = null;

<span style="white-space:pre">	</span>static PreparedStatement stmt = null;

<span style="white-space:pre">	</span>static ResultSet rs = null;

<span style="white-space:pre">	</span>static Statement st = null;

<span style="white-space:pre">	</span>static String username = null;

<span style="white-space:pre">	</span>static String password = null;

<span style="white-space:pre">	</span>static String url = null;

<span style="white-space:pre">	</span>static String driverName = null;

<span style="white-space:pre">	</span>public static Connection getConnMySQL() throws Exception {// 连接mysql 返回conn

<span style="white-space:pre">		</span>getUrlUserNamePassWordClassNameMySQL();

<span style="white-space:pre">		</span>conn = DriverManager.getConnection(url, username, password);

<span style="white-space:pre">		</span>// conn.setAutoCommit(false);设置自己主动提交为false

<span style="white-space:pre">		</span>return conn;

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static Connection getConnORCALE() throws Exception {// 连接orcale

<span style="white-space:pre">																</span>// 返回conn

<span style="white-space:pre">		</span>getUrlUserNamePassWordClassNameORCALE();

<span style="white-space:pre">		</span>conn = DriverManager.getConnection(url, username, password);

<span style="white-space:pre">		</span>// conn.setAutoCommit(false);

<span style="white-space:pre">		</span>return conn;

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>private static void getUrlUserNamePassWordClassNameORCALE()

<span style="white-space:pre">			</span>throws Exception {

<span style="white-space:pre">		</span>// 从资源文件 获取 orcale的username password url等信息

<span style="white-space:pre">		</span>Properties pro = new Properties();

<span style="white-space:pre">		</span>File path = new File("src/all.properties");

<span style="white-space:pre">		</span>pro.load(new FileInputStream(path));

<span style="white-space:pre">		</span>String paths = pro.getProperty("filepath");

<span style="white-space:pre">		</span>File file = new File(paths + "orcale.properties");

<span style="white-space:pre">		</span>getFromProperties(file);

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static void getUrlUserNamePassWordClassNameMySQL() throws Exception {

<span style="white-space:pre">		</span>// 从资源文件 获取mysql的username password url等信息

<span style="white-space:pre">		</span>Properties pro = new Properties();

<span style="white-space:pre">		</span>File path = new File("src/all.properties");

<span style="white-space:pre">		</span>pro.load(new FileInputStream(path));

<span style="white-space:pre">		</span>String paths = pro.getProperty("filepath");

<span style="white-space:pre">		</span>File file = new File(paths + "mysql.properties");

<span style="white-space:pre">		</span>getFromProperties(file);

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static void getFromProperties(File file) throws IOException,

<span style="white-space:pre">			</span>FileNotFoundException, ClassNotFoundException {// 读资源文件的内容

<span style="white-space:pre">		</span>Properties pro = new Properties();

<span style="white-space:pre">		</span>pro.load(new FileInputStream(file));

<span style="white-space:pre">		</span>username = pro.getProperty("username");

<span style="white-space:pre">		</span>password = pro.getProperty("password");

<span style="white-space:pre">		</span>url = pro.getProperty("url");

<span style="white-space:pre">		</span>driverName = pro.getProperty("driverName");

<span style="white-space:pre">		</span>Class.forName(driverName);

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static void dbClose() throws Exception {// 关闭所有

<span style="white-space:pre">		</span>if (rs != null)

<span style="white-space:pre">			</span>rs.close();

<span style="white-space:pre">		</span>if (st != null)

<span style="white-space:pre">			</span>st.close();

<span style="white-space:pre">		</span>if (stmt != null)

<span style="white-space:pre">			</span>stmt.close();

<span style="white-space:pre">		</span>if (conn != null)

<span style="white-space:pre">			</span>conn.close();

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static ResultSet getById(String tableName, int id) throws Exception {// 用id来查询结果

<span style="white-space:pre">		</span>st = conn.createStatement();

<span style="white-space:pre">		</span>rs = st.executeQuery("select * from " + tableName + "  where id=" + id

<span style="white-space:pre">				</span>+ " ");

<span style="white-space:pre">		</span>return rs;

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static ResultSet getByAll(String sql, Object... obj)

<span style="white-space:pre">			</span>throws Exception {// 用keyword 实现查询 keyword额能够随意

<span style="white-space:pre">		</span>sql = sql.replaceAll(";", "");

<span style="white-space:pre">		</span>sql = sql.trim();

<span style="white-space:pre">		</span>stmt = conn.prepareStatement(sql);

<span style="white-space:pre">		</span>String[] strs = sql.split("\\?

");// 将sql 以? 非开

<span style="white-space:pre">		</span>int num = strs.length;// 得到?

的个数

<span style="white-space:pre">		</span>int size = obj.length;

<span style="white-space:pre">		</span>for (int i = 1; i <= size; i++) {

<span style="white-space:pre">			</span>stmt.setObject(i, obj[i - 1]);// 数组下标从0開始

<span style="white-space:pre">		</span>}

<span style="white-space:pre">		</span>if (size < num) {

<span style="white-space:pre">			</span>for (int k = size + 1; k <= num; k++) {

<span style="white-space:pre">				</span>stmt.setObject(k, null);// 数组下标从0開始

<span style="white-space:pre">			</span>}

<span style="white-space:pre">		</span>}

<span style="white-space:pre">		</span>rs = stmt.executeQuery();

<span style="white-space:pre">		</span>return rs;

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static void doInsert(String sql) throws SQLException {// 传入 sql 语句

<span style="white-space:pre">																	</span>// 实现插入操作

<span style="white-space:pre">		</span>st = conn.createStatement();

<span style="white-space:pre">		</span>st.execute(sql);

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static void doInsert(String sql, Object... args) throws Exception {// 传入參数

<span style="white-space:pre">																				</span>// 利用

<span style="white-space:pre">																				</span>// PreparedStatement

<span style="white-space:pre">																				</span>// 实现插入

<span style="white-space:pre">		</span>// 传入的參数是随意多个 由于有Object 。。。

args

<span style="white-space:pre">		</span>int size = args.length;// 获得 Object ...obj 传过来的參数的个数

<span style="white-space:pre">		</span>stmt = conn.prepareStatement(sql);

<span style="white-space:pre">		</span>for (int i = 1; i <= size; i++) {

<span style="white-space:pre">			</span>stmt.setObject(i, args[i - 1]);// 数组下标从0開始

<span style="white-space:pre">		</span>}

<span style="white-space:pre">		</span>stmt.execute();

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static int doUpdate(String sql) throws Exception {// 传入 sql 实现更新操作

<span style="white-space:pre">		</span>st = conn.createStatement();

<span style="white-space:pre">		</span>int num = st.executeUpdate(sql);

<span style="white-space:pre">		</span>return num;

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static void doUpdate(String sql, Object... obj) throws Exception {

<span style="white-space:pre">		</span>// 传入參数 利用 PreparedStatement实现更新

<span style="white-space:pre">		</span>// 传入的參数是随意多个 由于有Object 。。

。args

<span style="white-space:pre">		</span>int size = obj.length;// 获得 Object ...obj 传过来的參数的个数

<span style="white-space:pre">		</span>stmt = conn.prepareStatement(sql);

<span style="white-space:pre">		</span>for (int i = 1; i <= size; i++) {

<span style="white-space:pre">			</span>stmt.setObject(i, obj[i - 1]);// 数组下标从0開始

<span style="white-space:pre">		</span>}

<span style="white-space:pre">		</span>stmt.executeUpdate(sql);

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static boolean doDeleteById(String tableName, int id)

<span style="white-space:pre">			</span>throws SQLException {// 删除记录 by id

<span style="white-space:pre">		</span>st = conn.createStatement();

<span style="white-space:pre">		</span>boolean b = st.execute("delete from " + tableName + " where id=" + id

<span style="white-space:pre">				</span>+ "");

<span style="white-space:pre">		</span>return b;

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static boolean doDeleteByAll(String sql, Object... args)

<span style="white-space:pre">			</span>throws SQLException {// 删除记录 能够按不论什么keyword

<span style="white-space:pre">		</span>sql = sql.replaceAll(";", "");

<span style="white-space:pre">		</span>sql = sql.trim();

<span style="white-space:pre">		</span>stmt = conn.prepareStatement(sql);

<span style="white-space:pre">		</span>String[] strs = sql.split("\\?

");// 将sql 以?

非开

<span style="white-space:pre">		</span>int num = strs.length;// 得到?的个数

<span style="white-space:pre">		</span>int size = args.length;

<span style="white-space:pre">		</span>for (int i = 1; i <= size; i++) {

<span style="white-space:pre">			</span>stmt.setObject(i, args[i - 1]);// 数组下标从0開始

<span style="white-space:pre">		</span>}

<span style="white-space:pre">		</span>if (size < num) {

<span style="white-space:pre">			</span>for (int k = size + 1; k <= num; k++) {

<span style="white-space:pre">				</span>stmt.setObject(k, null);// 数组下标从0開始

<span style="white-space:pre">			</span>}

<span style="white-space:pre">		</span>}

<span style="white-space:pre">		</span>boolean b = stmt.execute();

<span style="white-space:pre">		</span>return b;

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static void getMetaDate() throws Exception {// 获取数据库元素数据

<span style="white-space:pre">		</span>conn = DBUtils.getConnORCALE();

<span style="white-space:pre">		</span>DatabaseMetaData dmd = conn.getMetaData();

<span style="white-space:pre">		</span>System.out.println(dmd.getDatabaseMajorVersion());

<span style="white-space:pre">		</span>System.out.println(dmd.getDatabaseProductName());

<span style="white-space:pre">		</span>System.out.println(dmd.getDatabaseProductVersion());

<span style="white-space:pre">		</span>System.out.println(dmd.getDatabaseMinorVersion());

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static String[] getColumnNamesFromMySQL(String sql) throws Exception {

<span style="white-space:pre">		</span>conn = DBUtils.getConnMySQL();

<span style="white-space:pre">		</span>return getColumnName(sql);

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static String[] getColumnNamesFromOrcale(String sql)

<span style="white-space:pre">			</span>throws Exception {

<span style="white-space:pre">		</span>conn = DBUtils.getConnORCALE();

<span style="white-space:pre">		</span>return getColumnName(sql);

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>private static String[] getColumnName(String sql) throws Exception {// 返回表中所有的列名

<span style="white-space:pre">		</span>conn = DBUtils.getConnORCALE();

<span style="white-space:pre">		</span>st = conn.createStatement();

<span style="white-space:pre">		</span>rs = st.executeQuery(sql);

<span style="white-space:pre">		</span>ResultSetMetaData rsmd = rs.getMetaData();

<span style="white-space:pre">		</span>int num = rsmd.getColumnCount();

<span style="white-space:pre">		</span>System.out.println("ColumnCount=" + num);

<span style="white-space:pre">		</span>String[] strs = new String[num];

<span style="white-space:pre">		</span>// 显示列名

<span style="white-space:pre">		</span>for (int i = 1; i <= rsmd.getColumnCount(); i++) {

<span style="white-space:pre">			</span>String str = rsmd.getColumnName(i);

<span style="white-space:pre">			</span>strs[i - 1] = str;

<span style="white-space:pre">			</span>System.out.print(str + "\t");

<span style="white-space:pre">		</span>}

<span style="white-space:pre">		</span>return strs;

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static void getColumnDataFromMySQL(String sql) throws Exception {// 输出表中的数据

<span style="white-space:pre">		</span>conn = DBUtils.getConnMySQL();

<span style="white-space:pre">		</span>getColumnData(sql);

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static void getColumnDataFromORCALEL(String sql) throws Exception {// 输出表中的数据

<span style="white-space:pre">		</span>conn = DBUtils.getConnORCALE();

<span style="white-space:pre">		</span>getColumnData(sql);

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static void getColumnData(String sql) throws Exception {// 输出表中的数据

<span style="white-space:pre">		</span>st = conn.createStatement();

<span style="white-space:pre">		</span>rs = st.executeQuery(sql);

<span style="white-space:pre">		</span>ResultSetMetaData rsmd = rs.getMetaData();

<span style="white-space:pre">		</span>System.out

<span style="white-space:pre">				</span>.println("\n------------------------------------------------------------------------------------------------------------------------");

<span style="white-space:pre">		</span>while (rs.next()) {

<span style="white-space:pre">			</span>for (int i = 1; i <= rsmd.getColumnCount(); i++) {

<span style="white-space:pre">				</span>System.out.print(rs.getString(i) + "\t");

<span style="white-space:pre">			</span>}

<span style="white-space:pre">			</span>System.out.println();

<span style="white-space:pre">		</span>}

<span style="white-space:pre">		</span>System.out

<span style="white-space:pre">				</span>.println("------------------------------------------------------------------------------------------------------------------------");

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static void getTableDataFromOrcale(String sql) throws Exception {// 输出表的列名

<span style="white-space:pre">																			</span>// 和表中的所有数据

<span style="white-space:pre">		</span>conn = DBUtils.getConnORCALE();

<span style="white-space:pre">		</span>getTableData(sql);

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>public static void getTableDataFromMysql(String sql) throws Exception {// 输出表的列名

<span style="white-space:pre">																			</span>// 和表中的所有数据

<span style="white-space:pre">		</span>conn = DBUtils.getConnMySQL();

<span style="white-space:pre">		</span>getTableData(sql);

<span style="white-space:pre">	</span>}

<span style="white-space:pre">	</span>private static void getTableData(String sql) throws SQLException {

<span style="white-space:pre">		</span>// getTableDataFromMysql

<span style="white-space:pre">		</span>// getTableDataFromOrcale

<span style="white-space:pre">		</span>st = conn.createStatement();

<span style="white-space:pre">		</span>rs = st.executeQuery(sql);

<span style="white-space:pre">		</span>ResultSetMetaData rsmd = rs.getMetaData();

<span style="white-space:pre">		</span>int num = rsmd.getColumnCount();

<span style="white-space:pre">		</span>System.out.println("ColumnCount=" + num);

<span style="white-space:pre">		</span>String[] strs = new String[num];

<span style="white-space:pre">		</span>// 显示列名

<span style="white-space:pre">		</span>for (int i = 1; i <= rsmd.getColumnCount(); i++) {

<span style="white-space:pre">			</span>String str = rsmd.getColumnName(i);

<span style="white-space:pre">			</span>strs[i - 1] = str;

<span style="white-space:pre">			</span>System.out.print(str + "\t");

<span style="white-space:pre">		</span>}

<span style="white-space:pre">		</span>System.out

<span style="white-space:pre">				</span>.println("\n------------------------------------------------------------------------------------------------------------------------");

<span style="white-space:pre">		</span>while (rs.next()) {

<span style="white-space:pre">			</span>for (int i = 1; i <= rsmd.getColumnCount(); i++) {

<span style="white-space:pre">				</span>System.out.print(rs.getString(i) + "\t");

<span style="white-space:pre">			</span>}

<span style="white-space:pre">			</span>System.out.println();

<span style="white-space:pre">		</span>}

<span style="white-space:pre">		</span>System.out

<span style="white-space:pre">				</span>.println("------------------------------------------------------------------------------------------------------------------------");

<span style="white-space:pre">	</span>}

}

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