java jdbc连接数据库，Properties 属性设置参数方法

Posted 2021-01-21 东北大亨

今天在整合为数据库发现在配置中实现的赋值方式，可以用代码实现。特记录下共以后参考：

 

代码：
        // 操作数据库
        Connection conn;

        String strDatabase ="northeasttycoon";
            try {
                String url = "jdbc:sqlserver:127.0.0.1:1433;DatabaseName=strDatabase;";
                Properties pro = new Properties();
                pro.setProperty("initialSize", "10");
                pro.setProperty("maxActive", "100");
                pro.setProperty("maxIdle", "70");
                pro.setProperty("minIdle", "10");
                pro.setProperty("testOnBorrow", "true");

                pro.setProperty("validationQuery", "select 1");
                pro.setProperty("removeAbandonedTimeout", "120");
                pro.setProperty("removeAbandoned", "true");
                pro.setProperty("username", strUserName);
                pro.setProperty("password", strPassWord);

                conn = DriverManager.getConnection(url, pro);
                // Statement stmt;
                PreparedStatement stmt;
                ResultSet rs;

                String sql = "select * from  t_northeasttycoon";

                // 建立Statement对象
                stmt = conn.prepareStatement(sql);

                /**
                 * Statement createStatement() 创建一个 Statement 对象来将 SQL 语句发送到(northeasttycoon)数据库。
                 */
                // 执行数据库查询语句
                rs = stmt.executeQuery();
                /**
                 * ResultSet executeQuery(String sql) throws SQLException 执行给定的
                 * SQL 语句，该语句返回单个 ResultSet 对象
                 */
                while (rs.next()) {
　　　　　　　　// 查询结果
                }
                if (rs != null) {
                    rs.close();
                    rs = null;
                }
                if (stmt != null) {
                    stmt.close();
                    stmt = null;
                }
                if (conn != null) {
                    conn.close();
                    conn = null;
                }
            } catch (SQLException e) {
                e.printStackTrace();
            }