使用ABAP(ADBC)和Java(JDBC)连接SAP HANA数据库

在表DBCON里维护一条记录，指向HANA数据库。con_ENV里填入HANA数据库的主机名和端口号。如vmXXXX:30015

DATA: ls_new TYPE DBCON.ls_new-con_name = 'HAN'.ls_new-dbms = 'HDB'.ls_new-user_name = 'system'.ls_new-password = 'Sap12345'.ls_new-con_env = 'vml2018:30015'.

CALL FUNCTION 'DBCON_INSERT'  EXPORTING    DBCON_WORKAREA                = ls_new  EXCEPTIONS    DBCON_KEY_EXISTS              = 1    SECURE_STORE_KEY_EXISTS       = 2    SECURE_STORE_OTHER            = 3    OTHERS                        = 4          .IF SY-SUBRC = 0.   WRITE:/ 'Insert Successfully'.ENDIF.然后使用ABAP代码创建一个新的table，插入三条entry进行，再读出来，最后删除table.TYPES:     BEGIN OF result_t,        key TYPE i,        value TYPE string,     END OF result_t.DATA: connection TYPE dbcon-con_name VALUE 'HAN',      stmt_ref TYPE REF TO cl_sql_statement,      cx_sql_exception TYPE REF TO cx_sql_exception,      lv_text TYPE string,      res_ref TYPE REF TO cl_sql_result_set,      d_ref TYPE REF TO DATA,      result_tab TYPE TABLE OF result_t,      result_line TYPE result_t,      row_cnt TYPE i,      con_ref TYPE REF TO cl_sql_connection.con_ref = cl_sql_connection=>get_connection( connection ).stmt_ref = con_ref->create_statement( ).TRY.   stmt_ref->execute_ddl( 'CREATE TABLE I042416_TESTPROC_TAB( key INT PRIMARY KEY, value NVARCHAR(255) )' ).   stmt_ref->execute_update( 'INSERT INTO I042416_TESTPROC_TAB VALUES(1, ''First value'' )' ).   stmt_ref->execute_update( 'INSERT INTO I042416_TESTPROC_TAB VALUES(2, ''Second value'' )' ).   stmt_ref->execute_update( 'INSERT INTO I042416_TESTPROC_TAB VALUES(3, ''Third value'' )' ).   res_ref = stmt_ref->execute_query( 'SELECT * FROM I042416_TESTPROC_TAB' ).   GET REFERENCE OF result_tab INTO d_ref.   res_ref->set_param_table( d_ref ).   row_cnt = res_ref->next_package( ).   stmt_ref->execute_ddl( 'DROP TABLE I042416_TESTPROC_TAB' ).CATCH cx_sql_exception INTO cx_sql_exception.   lv_text = cx_sql_exception->get_text( ).   WRITE:/ 'Error:' , lv_text.ENDTRY.LOOP AT result_tab INTO result_line.   WRITE:/ 'Key:' , result_line-key, ' Value:', result_line-value.ENDLOOP.  

 Java实现类似： 

 public static void main(String[] args) { try {                    Class.forName("com.sap.db.jdbc.Driver");                    System.out.println("Create a connection...");              con = (com.sap.db.jdbc.trace.Connection) DriverManager                       .getConnection("jdbc:sap://:30015",// , "system", "此处填入登录密码");                    cs = (com.sap.db.jdbc.trace.CallableStatement) con.prepareCall("call I042416_two_par(NULL, NULL)");                    cs.execute(); int index = 0; do { int rowCount = 0;                           com.sap.db.jdbc.trace.ResultSet rs = (com.sap.db.jdbc.trace.ResultSet)cs.getResultSet();                           ResultSetMetaData metaData = rs.getMetaData(); int columnCount = metaData.getColumnCount(); while (rs != null && rs.next())                           { for (int i = 1; i <= columnCount; i++)                                 {                                        System.out.print(rs.getString(i) + " "); if (i == columnCount)                                        {                                               System.out.println();                                        }                                 }                                 System.out.println("Current Result Set Index:" + index + " Row Count: " + rowCount++);                                                     }                           System.out.println("Result Set Index: " + index++);                                              } while(cs.getMoreResults());             } 

console打印结果：数据能够成功通过JDBC从HANA数据库读取出来。

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