Previously, when others created the amount field, the built-in type of the field was char type, while the normal amount type should be curr type with 2 decimal places. Refer to wert11 field.

When changing the data element type of the field, an error is reported. The error message is:

The reason is that the table with this field has data, which leads to the problem of changing the table field type

Solution: tcode se14

Select save data, click activate and adjust database to activate the table. After the table is activated, the related structures and data elements can be activated normally.

In the process of rabbitmq docking, after importing the jar package, errors such as mismatch of jar package version and lack of method are reported during compilation;

Processing method: import the missing jar package

<dependency>
  <groupId>com.fasterxml.jackson.core</groupId>
  <artifactId>jackson-annotations</artifactId>
  <version>2.9.7</version>
</dependency>
<dependency>
  <groupId>com.fasterxml.jackson.core</groupId>
  <artifactId>jackson-databind</artifactId>
  <version>2.9.8</version>
</dependency>
<dependency>
  <groupId>com.fasterxml.jackson.core</groupId>
  <artifactId>jackson-core</artifactId>
  <version>2.9.8</version>
</dependency>

  IOS reports an error using new date()

When developing the app today, I found that the same ‘new date()’ code is OK on Android and will report an error on IOS. Found a plan and recorded it

let stringTime = ‘2021-7-5 17:48:20’
let time1 = new Date().getTime(); // Current timestamp
let time2 = Date.parse(new Date(stringTime)); // Timestamp of the specified time
let time = time1 – time2;
Console.log (time)// Nan

eliminated the problem of time2, but why is there no problem on Android phones. Originally, ‘2021-7-5 17:48:20’ was used on IOS, including ` – ‘, but only the format of ` /’ can be recognized in IOS. Use ‘stringtime. Replace (/ -/g, “/)’ to replace it with ` ‘2021/7/5 17:48:20’, which is no problem

let stringTime = ‘2021-7-5 17:48:20’
let time1 = new Date().getTime(); // Current timestamp
Stringtime = stringtime. Replace (/ -/g, “/”)// this is the IOS pit. Use this to convert it
let time2 = Date.parse(new Date(stringTime)); // Timestamp of the specified time
let time = time1 – time2;
Console.log (time)// 1352063

however, Android has no problem using `/` this. Android doesn’t have to adapt anymore. Just use it directly

This problem occurred when using webpack 4 to package less file. It was unable to parse this file. After careful checking the code, we found that this is missing from the regular representation in webpack.config.js file, as shown in the figure below. Just add this.