SPRINGBOOT-7： ODPS接口調測

由于隻是一個小系統，ODPS的使用者密碼被寫死在application.properties中

1.ODPS資料源注冊

主要有2個方法：一個是CreateOdpsLink()這個方法主要是将odps連接配接的參數做初始化封裝為Bean，供其他接口調用

二是OdpsExecSql:直接執行文本格式的sql語句

@Component
@Configuration
public class OdpsDatasourceConfiguration {

    @Value("${my_access_id}")
    private String my_access_id;

    @Value("${my_access_key}")
    private String my_access_key;

    @Value("${odps_endpoint}")
    private String odps_endpoint;

    @Value("${odps_project}")
    private String odps_project;


    @Bean(name = "CreateOdpsLink")
    public Odps CreateOdpsLink() throws Exception {
        Account account = new AliyunAccount(my_access_id, my_access_key);
        Odps odps = new Odps(account);
        odps.setEndpoint(odps_endpoint);
        odps.setDefaultProject(odps_project);
        return odps;
    }

       public static List<Map> OdpsExecSql(Odps odps,String sql) throws Exception {
        Instance i;
        List<Map> list = new ArrayList<>();
            i = SQLTask.run(odps, sql);
            i.waitForSuccess();
            List<Record> records = SQLTask.getResult(i);
        for (Record record : records) {
            int count = record.getColumnCount();
            Column[] columns = record.getColumns();

            Map<String, Object> map = new LinkedHashMap<>(16);
            for (int i = 0; i < count; ++i) {
                putByOdpsType(record, columns[i], map, i);
            }
            list.add(map);
        }
            return list;
            
        
        

    }

    private static void putByOdpsType(Record record, Column column, Map<String, Object> map, int i) {
        switch (column.getTypeInfo().getOdpsType()) {
            case BIGINT:
                map.put(column.getName(), record.getBigint(i));
                break;
            case INT:
            case TINYINT:
            case SMALLINT:
                map.put(column.getName(), Integer.valueOf((String)record.get(i)));
                break;
        }
    }
}
           

2. Controller調用:

通過@Autowired的方式将Odps 執行個體中的參數進行調用；然後執行SQL語句

@RestController
@RequestMapping(path = "/datasource")
public class OdpsController {

    @Autowired
    @Qualifier("CreateOdpsLink")
    private Odps odps;

     @CrossOrigin
    @RequestMapping(value = "/test", method = RequestMethod.GET)
    private List<Map<String,String>> zero_link() throws Exception {
        String input1 = "select * from a.a where ds = max_pt('a.a');";
        Map <String,String> modelNew = new HashMap<String, String>();
        List <Map<String,String>> List_model = new ArrayList<>();

        List<Map> list = OdpsDatasourceConfiguration.OdpsExecSql(odps,input1);
        for (Map map : list) {
            List_model.add(modelNew);
            Iterator iter = map.entrySet().iterator();
            while (iter.hasNext()) {
                Map.Entry entry = (Map.Entry) iter.next();
                modelNew.put(entry.getKey().toString(), entry.getValue().toString());
            }
        }
        return List_model;
    }
}
           

參考連結：

https://help.aliyun.com/document_detail/34614.html