spring boot mybatis相关问题

1.读取properties文件中的配置值

使用@Value方式

@RestController
public class WebController {
@Value("${test.msg}")
private String msg;

@RequestMapping("/index1")
public String index1(){
return "方式一:"+msg;
}
}</span>

使用Environment方式

@RestController
public class WebController {
@Autowired
private Environment env;

@RequestMapping("/index2")
public String index2(){
return "方式二:"+env.getProperty("test.msg");
}
}

2.设置和获取cookie

输入，需要加入HttpServletResponse response

Cookie cookie = new Cookie("access_token", access_token);
cookie.setMaxAge(1296000); //设置cookie的过期时间是1296000s
response.addCookie(cookie);

获取，只要添加标签@CookieValue,如：

public String Login(@CookieValue(value = "access_token", defaultValue = "fail") String access_token, HttpSession session)

设置和获取session

在函数处添加HttpSession session作为参数

获取：session.getAttribute(“currentUser”);

添加：session.setAttribute(“currentUser”, currentUser);