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  • python用jdbc读取oracle表和列的信息,生成java代码

    这个项目的地址 传送门

    第一个python3项目,对python 还是学习中,请大佬轻喷,欢迎指点

    import jaydebeapi
    
    from .database import Database
    
    dirver = 'oracle.jdbc.OracleDriver'
    jarFile = '/Users/warrior/Code/python/builder/jar/ojdbc6-11.2.0.1.0.jar'
    
    
    class DbOracle(Database):
    
        def get_jdbc_connection(self):
            import jpype
            if jpype.isJVMStarted() and not jpype.isThreadAttachedToJVM():
                jpype.attachThreadToJVM()
                jpype.java.lang.Thread.currentThread().setContextClassLoader(jpype.java.lang.ClassLoader.getSystemClassLoader())
            connection = jaydebeapi.connect(dirver, self.url, {'user': self.user, 'password': self.password, 'tmode': 'TERA', 'charset': 'UTF8'}, jarFile)
            return connection
    
        def connect(self, url, user, password):
            self.url = url
            self.user = user
            self.password = password
    
        def userTables(self):
            data = self.execute("""SELECT A.TABLE_NAME, B.COMMENTS FROM USER_TABLES A 
                LEFT JOIN USER_TAB_COMMENTS B ON A.TABLE_NAME=B.TABLE_NAME""")
            result = []
            for table in data:
                result.append({'name': table[0], 'comment': table[1]})
            return result
    
        def columns(self, table_name):
            data = self.execute("""SELECT A.COLUMN_NAME, A.DATA_TYPE, A.DATA_LENGTH, A.DATA_PRECISION, A.DATA_SCALE, A.NULLABLE, B.COMMENTS 
                FROM USER_TAB_COLUMNS A LEFT JOIN USER_COL_COMMENTS B 
                ON A.TABLE_NAME=B.TABLE_NAME AND A.COLUMN_NAME=B.COLUMN_NAME 
                WHERE A.TABLE_NAME='%s' ORDER BY COLUMN_ID ASC""" % table_name)
            result = []
            primary_key = self.table_primary(table_name)
            for column in data:
                result.append({'name': column[0], 'type': column[1], 'primary': column[0] in primary_key,
                'length': column[2], 'precision': column[3], 'scale': column[4], 'nullable':column[5], 'comment': column[6]})
            return result
    
        def table_primary(self, table_name):
            sql = """SELECT cols.column_name FROM all_constraints cons, all_cons_columns cols
                        WHERE cols.table_name = '%s' AND cons.constraint_type = 'P'
                        AND cons.constraint_name = cols.constraint_name AND cons.owner = cols.owner
                        ORDER BY cols.table_name""" % table_name
            data = self.execute(sql)
            result = []
            for d in data:
                result.append(d[0])
            return result
    
    
        def execute(self, sql):
            conn = self.get_jdbc_connection()
            curs = conn.cursor()
            curs.execute(sql)
            result = curs.fetchall()
            curs.close()
            conn.close()
            return result
    
        def close(self):
            if (self.conn != None):
                self.conn.close()
    
    
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  • 原文地址:https://www.cnblogs.com/warrior/p/11097874.html
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