简单代码导出ORACLE数字字典

前话：老系统，居然连数据字典都没，全是SQL。无奈从数据库导出数字字典，很简单的代码，就是读oracel系统表。


把输出保存到文件，然后excel导入，用tab分隔就行了。

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import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.Statement;public class Test {public static void main(String[] args) {try {Class.forName("oracle.jdbc.driver.OracleDriver");Connection con = DriverManager.getConnection("jdbc:oracle:thin:@192.168.10.11:1521:hzdev", "xiao","xiao");Statement stmt = con.createStatement();StringBuffer strbuf = new StringBuffer();strbuf.append("SELECT A.*,B.comments");strbuf.append(" FROM all_tab_columns A,DBA_COL_COMMENTS B");strbuf.append(" WHERE A.owner=B.owner");strbuf.append(" AND A.table_name=B.table_name");strbuf.append(" AND A.COLUMN_NAME=B.COLUMN_NAME");// owner是指要导出哪个用户的strbuf.append(" AND A.owner='XIAO'");strbuf.append(" ORDER BY A.TABLE_NAME");ResultSet rs = stmt.executeQuery(strbuf.toString());String tb = "";String tempTb=null;StringBuffer sb = new StringBuffer();int count=0;while (rs.next()) {tb = rs.getString("TABLE_NAME");if (!tb.equals(tempTb)) {count++;sb.append("\n");System.out.println(sb.toString());sb = new StringBuffer();sb.append("表名："+tb);tempTb=tb;sb.append("\n字段名称\t");sb.append("字段类型\t");sb.append("长度\t");sb.append("数字长度\t");sb.append("小数位数\t");sb.append("是否要空\t");sb.append("字段说明\t");}sb.append("\n"+rs.getString("COLUMN_NAME") + "\t");sb.append(rs.getString("DATA_TYPE") + "\t");sb.append(rs.getString("DATA_LENGTH") + "\t");sb.append(rs.getString("DATA_PRECISION") + "\t");sb.append(rs.getString("DATA_SCALE") + "\t");sb.append(rs.getString("NULLABLE") + "\t");sb.append(rs.getString("COMMENTS") + "\t");} System.out.println("表的个数:"+count);rs.close();stmt.close();con.close();} catch (Exception e) {e.printStackTrace();}}}