log4rs输出json格式日志

toml

log = "0.4"
log4rs = "1.3"

rs

use log::{error, info, warn, LevelFilter};
use log4rs::{append::console::ConsoleAppender,config::{Appender, Root},encode::json::JsonEncoder,
};
use log4rs::append::file::FileAppender;fn main() {//命令行let stdout = ConsoleAppender::builder().encoder(Box::new(JsonEncoder::new())).build();//文件let fileout = FileAppender::builder().encoder(Box::new(JsonEncoder::new())).build("./data.log").unwrap();let log_config = log4rs::config::Config::builder().appender(Appender::builder().build("file", Box::new(fileout))).build(Root::builder().appender("file").build(LevelFilter::Info)).unwrap();log4rs::init_config(log_config).unwrap();info!("Info log!");warn!("Warn log with value {}", "test");error!("ERROR!");
}