0%

Posted on Valine:
Symbols count in article: 84 Reading time ≈ 1 mins.

maven的命令。如果yml文件改变了，但是没有运行的话，package命令只会打包以前在target目录下的yml，导致配置失效。

这个问题，困扰了我好多天，记录一下。

Posted on In Valine:
Symbols count in article: 75 Reading time ≈ 1 mins.

虚拟dom

image-20200922103757589

这才是React的真实场景：

image-20200922104302028

Diff算法

image-20200922105350013

image-20200922105623348

不要用index作为key值，可以用item作为key，因为重新渲染会导致key对不上，增加性能消耗

Posted on Edited on Valine:
Symbols count in article: 0 Reading time ≈ 1 mins.

image-20200915085729705

image-20200915091146223

image-20200915145356007

image-20200915145727647

image-20200915145914282

Posted on Valine:
Symbols count in article: 643 Reading time ≈ 1 mins. 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
server {
        listen       80;
        server_name  localhost www.jxs17.com jxs17.com;
    #charset koi8-r;

    #access_log  logs/host.access.log  main;

    location / {
        root   web;
        index  index.html index.htm;
    }
    # 把/api的接口重定向到8081端口
    location /api/  {
        proxy_pass http://127.0.0.1:8081/;
    }

	# 把以admin开头的接口，定位到admin这个包下
    location /admin {
    alias   admin;
    index  index.html index.htm;

    }
	# 把www重定向到不加www
    if ($http_host !~ "^jxs17.com$") {
                       rewrite  ^(.*)    http://jxs17.com$1 permanent;

      }
      
      error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
}

Posted on Edited on Valine:
Symbols count in article: 2.4k Reading time ≈ 2 mins.

AOP概念

image-20200911100300131

image-20200912143553232

image-20200912143723324

image-20200912143947565

image-20200912144656229

image-20200912144629876

image-20200912145028664

Code

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
/**
 * @author xixing
 * @version 1.0
 * @date 2020/9/11 10:21
 */
@Aspect
@Component
public class ServiceAspect {

   /**
    * *表示所有返回类型
    * ..表示该包下面的所有子包
    * *表示所有类
    * .*表示所有方法
    * (..)表示方法不管多少个参数
    *
    */
   @Pointcut("execution(* site.xixing.service..*.*(..))")
   public void embed(){

   }

   @Before("embed()")
   public void before(JoinPoint joinPoint){
      System.out.println("begin the joinPoint"+joinPoint);
   }

   @After("embed()")
   public void after(JoinPoint joinPoint){
      System.out.println("end the joinPoint"+joinPoint);
   }

   @Around("embed()")
   public Object around(JoinPoint joinPoint){
      long start=System.currentTimeMillis();
      System.out.println("开始计时:"+start);
      Object returnValue=null;

      try {
         ((ProceedingJoinPoint) joinPoint).proceed();

         System.out.println("执行成功");
      } catch (Throwable throwable) {
         throwable.printStackTrace();
      }finally {
         long endTime=System.currentTimeMillis();
         System.out.println("执行时间:"+(endTime-start));
      }
      return returnValue;
   }

   @AfterReturning(pointcut = "embed()" ,returning = "returnValue")
   public void afterReturning(JoinPoint joinPoint,Object returnValue){
      System.out.println("afterReturning:"+joinPoint+"最后返回:"+returnValue);
   }

   @AfterThrowing(pointcut = "embed()" ,throwing = "exception")
   public void afterThrowing(JoinPoint joinPoint,Exception exception){
      System.out.println("抛出异常通知:"+joinPoint+exception.getMessage());
   }

}

Introduction

1
2
@DeclareParents(value = "site.xixing.controller..*" ,defaultImpl =site.xixing.introduction.impl.LittleUniverseImpl.class)
public LittleUniverse littleUniverse;

image-20200912150612813

代理模式

1
2
3
4
5
6
7
8
9
/**
 * @author xixing
 * @version 1.0
 * @date 2020/9/12 15:54
 */
public interface ToCPayment {

    void pay();
}
1
2
3
4
5
6
7
8
9
10
11
/**
 * @author xixing
 * @version 1.0
 * @date 2020/9/12 16:07
 */
public class ToCPaymentImpl implements ToCPayment {
    @Override
    public void pay() {
        System.out.println("支付！！！");
    }
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
/**
 * @author xixing
 * @version 1.0
 * @date 2020/9/12 16:08
 */
public class AlipayToC implements ToCPayment {

    ToCPayment toCPayment;

    public AlipayToC(ToCPayment toCPayment){
        this.toCPayment=toCPayment;
    }

    @Override
    public void pay() {
        before();
        toCPayment.pay();
        after();
    }

    private void before() {
        System.out.println("从银行取款！！！");
    }

    private void after() {
        System.out.println("转入对应的账户！！！");
    }
}

image-20200912161732584

image-20200912161807928

image-20200914094509519

image-20200914101303047

image-20200914103342114

image-20200914103416826

image-20200914103428916

代理模式代码