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; /** * 測試JDBC API調用過程 * @author tarena * */ public class ProcedureDemo2 { /** * @param args * @throws Exception */ public static void main(String[] args) throws Exception { System.out.println(login(123, 1234)); } /** * 調用過程,實現登錄功能 * @param id 考生id * @param pwd 考試密碼 * @return if成功:1; if密碼錯:0; if沒有用戶:-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); //傳遞輸入參數 stmt.setInt(1, id); stmt.setInt(2, pwd); //注冊輸出參數,第三個占位符的數據類型是整型 stmt.registerOutParameter(3, Types.INTEGER);//***** //執行過程 stmt.execute(); //獲得過程執行後的輸出參數 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 {// 連接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);設置自動提交為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 {// 連接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>// 從資源文件 獲取 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>// 從資源文件 獲取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 {// 讀資源文件的內容 <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 {// 關閉所有 <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來查詢結果 <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 {// 用關鍵字 實現查詢 關鍵字額可以任意 <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("\\?");// 將sql 以? 非開 <span style="white-space:pre"> </span>int num = strs.length;// 得到?的個數 <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]);// 數組下標從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);// 數組下標從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 {// 傳入 sql 語句 <span style="white-space:pre"> </span>// 實現插入操作 <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 {// 傳入參數 <span style="white-space:pre"> </span>// 利用 <span style="white-space:pre"> </span>// PreparedStatement <span style="white-space:pre"> </span>// 實現插入 <span style="white-space:pre"> </span>// 傳入的參數是任意多個 因為有Object 。。。args <span style="white-space:pre"> </span>int size = args.length;// 獲得 Object ...obj 傳過來的參數的個數 <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]);// 數組下標從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 {// 傳入 sql 實現更新操作 <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>// 傳入參數 利用 PreparedStatement實現更新 <span style="white-space:pre"> </span>// 傳入的參數是任意多個 因為有Object 。。。args <span style="white-space:pre"> </span>int size = obj.length;// 獲得 Object ...obj 傳過來的參數的個數 <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]);// 數組下標從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 {// 刪除記錄 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 {// 刪除記錄 可以按任何關鍵字 <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("\\?");// 將sql 以? 非開 <span style="white-space:pre"> </span>int num = strs.length;// 得到?的個數 <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]);// 數組下標從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);// 數組下標從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 {// 獲取數據庫元素數據 <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>// 顯示列名 <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 {// 輸出表中的數據 <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 {// 輸出表中的數據 <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 {// 輸出表中的數據 <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 {// 輸出表的列名 <span style="white-space:pre"> </span>// 和表中的全部數據 <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 {// 輸出表的列名 <span style="white-space:pre"> </span>// 和表中的全部數據 <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>// 顯示列名 <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>} }