logger.info占位符的使用

{}表示占位符，使用方法如下：

package org.pine.controller;

import javax.annotation.Resource;
import org.pine.service.CashAccountService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping("/cashAccount")
public class CashAccountController {
    private static Logger logger = LoggerFactory.getLogger(CashAccountController.class);
    
    @Resource
    private CashAccountService cashAccountService;
    
    @RequestMapping("/transfer")
    @ResponseBody
    public String transfer(Integer from, Integer to, Double amount) {
        try {
            logger.info("from:{},to:{},amount:{}",from,to,amount);
            this.cashAccountService.transfer(from, to, amount);
            return "success";
        } catch (Exception e) {
            return "failure";
        }

    }

}