Java 내보내기 oracle 테이블 구조 인스턴스 상세 정보

Java 내보내기 oracle 테이블 구조 인스턴스 상세 정보
최근에 사용한 것은plsql이 유료이기 때문에 사용하지 못하게 하고 많은 방법을 찾아서 마침내 이것을 발견하였다.
핵심 문장

SELECT DBMS_METADATA.GET_DDL(U.OBJECT_TYPE, U.object_name), U.OBJECT_TYPE  
FROM USER_OBJECTS U  
where U.OBJECT_TYPE = 'TABLE'  
or U.OBJECT_TYPE = 'VIEW'  
or U.OBJECT_TYPE = 'INDEX'  
or U.OBJECT_TYPE = 'PROCEDURE'  
or U.OBJECT_TYPE = 'SEQUENCE'  
or U.OBJECT_TYPE = 'TRIGGER'  
order by U.OBJECT_TYPE desc 

직접 작성한 Java 메서드, 포장되지 않았습니다.

package sql; 
 
import java.io.FileInputStream; 
import java.io.FileWriter; 
import java.sql.Clob; 
import java.sql.Connection; 
import java.sql.DriverManager; 
import java.sql.ResultSet; 
import java.sql.Statement; 
import java.util.ArrayList; 
import java.util.List; 
import java.util.Properties; 
 
public class Main { 
 
  private static final String TYPE_MARK = "-1"; 
   
  private static String SQL =  
    "SELECT DBMS_METADATA.GET_DDL(U.OBJECT_TYPE, U.object_name), U.OBJECT_TYPE " + 
    "FROM USER_OBJECTS U " + 
    "where U.OBJECT_TYPE = 'TABLE' " + 
    "or U.OBJECT_TYPE = 'VIEW' " + 
    "or U.OBJECT_TYPE = 'INDEX' " + 
    "or U.OBJECT_TYPE = 'PROCEDURE' " + 
    "or U.OBJECT_TYPE = 'SEQUENCE' " + 
    "or U.OBJECT_TYPE = 'TRIGGER' " + 
    "order by U.OBJECT_TYPE desc"; 
   
  private static String URL = "jdbc:oracle:thin:@192.168.1.2:1521:orcl"; 
  private static String USERNAME = "abc"; 
  private static String PASSWORD = "abc"; 
  private static String OUTFILE = "tables.sql"; 
   
  /** 
   * @param args 
   * @throws Exception 
   * @throws  
   */ 
  public static void main(String[] args) throws Exception { 
    // TODO Auto-generated method stub 
    Properties properties = new Properties(); 
    properties.load(new FileInputStream("config.properties")); 
    URL = properties.getProperty("url", URL); 
    USERNAME = properties.getProperty("username", USERNAME); 
    PASSWORD = properties.getProperty("password", PASSWORD); 
    OUTFILE = properties.getProperty("outfile", OUTFILE); 
    SQL = properties.getProperty("sql", SQL); 
     
    FileWriter fw = new FileWriter(OUTFILE); 
    Class.forName("oracle.jdbc.driver.OracleDriver"); 
    Connection con = DriverManager.getConnection(URL, USERNAME, PASSWORD); 
    Statement statement = con.createStatement(); 
    ResultSet rs = statement.executeQuery(SQL); 
    Clob ddl; 
    String type = TYPE_MARK; 
    int count = 0; 
    List<String> list = new ArrayList<String>(); 
    while(rs.next()) { 
      ddl = rs.getClob(1); 
      fw.write(ddl.getSubString(1L, (int)ddl.length())); 
      if(!rs.getString(2).equals(type)) { 
        if(!type.equals(TYPE_MARK)) { 
          list.add(type + "," + count); 
          type = rs.getString(2); 
          count = 1; 
        } else { 
          type = rs.getString(2); 
          count ++; 
        } 
      } else 
        count ++; 
    } 
    list.add(type + "," + count); 
    fw.flush(); 
    fw.close(); 
    rs.close(); 
    statement.close(); 
    con.close(); 
    for(String type1 : list) 
      System.out.print(type1.split(",")[0] + ":" + type1.split(",")[1] + ";"); 
    System.out.println(); 
  } 
 
} 

config.properties

url=jdbc:oracle:thin:@192.168.1.2:1521:orcl 
username=abc 
password=abc 
outfile=tables.sql 
sql=SELECT DBMS_METADATA.GET_DDL(U.OBJECT_TYPE, U.object_name), U.OBJECT_TYPE \ 
FROM USER_OBJECTS U \ 
where U.OBJECT_TYPE = 'TABLE' \ 
or U.OBJECT_TYPE = 'VIEW' \ 
or U.OBJECT_TYPE = 'INDEX' \ 
or U.OBJECT_TYPE = 'PROCEDURE' \ 
or U.OBJECT_TYPE = 'SEQUENCE' \ 
or U.OBJECT_TYPE = 'TRIGGER' \ 
order by U.OBJECT_TYPE desc 

또한 jdbc의 Oracle 드라이브가 필요합니다.
읽어주셔서 감사합니다. 여러분에게 도움이 되었으면 좋겠습니다. 본 사이트에 대한 지지에 감사드립니다!