mysql创建 存储过程 并通过java程序调用该存储过程
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>}
}
