hutools之批量更新

public class HutoolTest {
    private static DataSource dataSource = DSFactory.get();  //读取默认路径下的配置文件,数据库连接以及线程池的配置
    private static SqlRunner sqlRunner = SqlRunner.create(dataSource);

    public static String count = "select count(1) from company_with_industry where id > 5";
    public static String currentPage = "select max(id) from company_with_industry where id in (select id from (select id from company_with_industry where id>? order by id limit 10000) as ids)";
    public static String select = "select * from company_with_industry where id>? order by id limit 10000";
    public static String update = "update company_with_industry set industry = ? where id = ?";
    private static Queue<Long> queue = new ConcurrentLinkedDeque<>();
    static Map<String, String> map = new HashMap<>();
    static ExecutorService threadPool = Executors.newFixedThreadPool(10);

    @Test
    public void test() {
        initQueue();
        readFile();
        updateIndustry();
    }

    public static void initQueue() {
        Entity entity = Entity.create("company_with_industry");
        long count = 0;
        long totalPage = 0;
        long currentId = 5;
        try {
            count = sqlRunner.count(entity);
            totalPage = count % 10000 == 0 ? count / 10000 : count / 10000 + 1;
            queue.add(currentId);
            for (int i = 1; i < totalPage; i++) {
                long id = sqlRunner.queryNumber(currentPage, currentId).longValue();
                currentId = id;
                //System.out.println(currentId);
                queue.add(currentId);
            }
            System.out.println(queue);
        } catch (SQLException e) {
            e.printStackTrace();
        }
        System.out.println(count);
    }

    public static void readFile() {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(new File("行业关键字.txt")), "UTF-8"));
            String line = "";
            while ((line = br.readLine()) != null) {
                System.out.println(line);
                String[] ss = line.split("--");
                for (String keyword : ss[1].split(",")) {
                    map.put(keyword, ss[0]);
                }
            }
            System.out.println(map);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void updateIndustry() {
        while (true) {
            if(queue.size()>0){
                long currentPage = queue.poll();
                if (currentPage != 0) {
                    threadPool.execute(() -> {
                        try {
                            List<Entity> list = sqlRunner.query(select, currentPage);
                            Object[][] objects = new Object[1000][2];
                            int count = 0;
                            for (Entity entity : list) {
                                String entName = entity.getStr("ent_name");
                                if (!entName.contains("?")) {
                                    for (String keyword : map.keySet()) {
                                        if (entName.contains(keyword)) {

                                            objects[count][0] = map.get(keyword);
                                            objects[count][1] =  entity.getLong("id");
                                            count++;
                                            break;
                                        }
                                    }
                                }
                                if(count==1000){
                                    sqlRunner.executeBatch(update,objects);
                                    count = 0;
                                    objects = new Object[1000][2];
                                    System.out.println(Thread.currentThread().getName()+"	gank了1000条数据	"+entity.getLong("id"));
                                }
                            }
                            if(objects.length>0){
                                sqlRunner.executeBatch(update,objects);
                                System.out.println(Thread.currentThread().getName()+"	gank了1000条数据	"+list.get(list.size()-1).getLong("id"));
                            }
                        } catch (Exception e) {
                            e.printStackTrace();
                            System.out.println(currentPage);
                        }

                    });

                } else {
                    System.out.println("没任务了,休息5秒钟!");
                    try {
                        Thread.currentThread().sleep(5 * 1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }

        }
    }

}
原文地址:https://www.cnblogs.com/shirandedan/p/9469846.html