在下面的示例中，我有由命令行参数设置的参数TextInput和CREATE TABLE `sensor_history` (
`measurement_time_utc` int(11) NOT NULL,
`sensor_id` int(11) NOT NULL,
`sensor_measurement_x` double NOT NULL,
`sensor_measurement_y` double NOT NULL,
`sensor_measurement_z` double NOT NULL,
`sensor_quality` int(11) NOT NULL
);
CREATE TABLE `process_history` (
`log_time_utc` int(11) NOT NULL,
`process_id` int(11) NOT NULL,
`process_speed` double NOT NULL,
`process_load` int(11) NOT NULL
);
CREATE VIEW `rollup` AS SELECT
`sensor_history`.`measurement_time_utc`,
`sensor_history`.`sensor_id`,
`sensor_history`.`sensor_measurement_x`,
`sensor_history`.`sensor_measurement_y`,
`sensor_history`.`sensor_measurement_z`,
`sensor_history`.`sensor_quality`,
(SELECT `process_history`.`process_id` FROM `process_history` WHERE `sensor_history`.`measurement_time_utc`>=`process_history`.`log_time_utc` ORDER BY `process_history`.`log_time_utc` DESC LIMIT 1) AS `process_id`,
(SELECT `process_history`.`process_speed` FROM `process_history` WHERE `sensor_history`.`measurement_time_utc`>=`process_history`.`log_time_utc` ORDER BY `process_history`.`log_time_utc` DESC LIMIT 1) AS `process_speed`,
(SELECT `process_history`.`process_load` FROM `process_history` WHERE `sensor_history`.`measurement_time_utc`>=`process_history`.`log_time_utc` ORDER BY `process_history`.`log_time_utc` DESC LIMIT 1) AS `process_load`
FROM `sensor_history`;
。 verbose是一个布尔型标志，但是data_source用于从一组可用函数中选择一个缺省值，这些函数可以根据应用程序的数据源使用。
Actix使用闭包来设置服务器，因此我需要将这些参数放入闭包中。我为布尔添加了verbose，但是在传递要用于索引的函数时遇到了麻烦，并且遇到了生命周期错误。我尝试将函数装箱，但这似乎无济于事。
如果我正确地理解了错误消息，则实际上是闭包本身未能超过data_source。
我应该怎么做才能解决这个问题？
move'static答案 0 :(得分：1)
我不明白编译器在说什么，但是很明显，在处理程序闭包中您需要move：
if verbose {
App::new()
.middleware(middleware::Logger::default())
.resource("/", move |r| r.method(Method::GET).f(index))
} else {
App::new().resource("/", move |r| r.method(Method::GET).f(index))
}
这是因为您需要将index从外部封盖中移出。