MyBatis执行批处理操作的实现示例

try (SqlSession sqlSession = sqlSessionFactory.openSession(ExecutorType.BATCH)) {
    YourMapper mapper = sqlSession.getMapper(YourMapper.class);
    for (YourData data : dataList) {
        // 根据需要调用insert, update或delete方法
        mapper.insertOrUpdate(data);
    }
    sqlSession.commit();
    // 可以获取批处理结果，处理特定逻辑
}

@Override
public int doUpdate(MappedStatement ms, Object parameter) throws SQLException {
    final Configuration configuration = ms.getConfiguration();
    final StatementHandler handler = configuration.newStatementHandler(this, ms, parameter, RowBounds.DEFAULT, null, null);
    final BoundSql boundSql = handler.getBoundSql();
    final String sql = boundSql.getSql();
    final Statement stmt;
    if (sql.equals(currentSql) && ms.equals(currentStatement)) {
        int last = statementList.size() - 1;
        stmt = statementList.get(last);
        applyTransactionTimeout(stmt);
        handler.parameterize(stmt);//fix Issues 322
    } else {
        Connection connection = getConnection(ms.getStatementLog());
        stmt = handler.prepare(connection, transaction.getTimeout());
        handler.parameterize(stmt);    //fix Issues 322
        currentSql = sql;
        currentStatement = ms;
        statementList.add(stmt);
        batchResultList.add(new BatchResult(ms, sql, parameter));
    }
    handler.batch(stmt);
    return BATCH_UPDATE_RETURN_VALUE;
}

@Override
public List<BatchResult> doFlushStatements(boolean isRollback) throws SQLException {
    try {
        if (isRollback) {
            return Collections.emptyList();
        }

        List<BatchResult> results = new ArrayList<>();
        if (statementList.size() > 0) {
            for (int i = 0, n = statementList.size(); i < n; i++) {
                Statement stmt = statementList.get(i);
                BatchResult batchResult = batchResultList.get(i);
                try {
                    batchResult.setUpdateCounts(stmt.executeBatch());
                    MappedStatement ms = batchResult.getMappedStatement();
                    List<Object> parameterObjects = batchResult.getParameterObjects();
                    KeyGenerator keyGenerator = ms.getKeyGenerator();
                    if (Jdbc3KeyGenerator.class.equals(keyGenerator.getClass())) {
                        Jdbc3KeyGenerator jdbc3KeyGenerator = (Jdbc3KeyGenerator) keyGenerator;
                        jdbc3KeyGenerator.processBatch(ms, stmt, parameterObjects);
                    } else if (!NoKeyGenerator.class.equals(keyGenerator.getClass())) { //issue #141
                        for (Object parameter : parameterObjects) {
                            keyGenerator.processAfter(this, ms, stmt, parameter);
                        }
                    }
                } finally {
                    closeStatement(stmt);
                }
            }
        }
        return results;
    } finally {
        for (Statement stmt : statementList) {
            closeStatement(stmt);
        }
        currentSql = null;
        statementList.clear();
        batchResultList.clear();
    }
}