OA uploading and editing data

1, Vo:value object value. Typically used for data transfer between business tiers, as is the case with PO, which contains only data. But it should be abstracted out of business objects that can correspond to tables, or not, depending on the needs of the business.

2.

String[] Type print tosring when displayed as a piece of memory space, this time according to the key can be judged that the value has been successfully received

3.

When deciding on a condition, it is important to note the wording of the fuzzy query, and the string type can be subtracted by trim ().

4.

Note: value is the time when the form is submitted and is assigned a value that can be loaded into the dialog box during initialization.

5.

Long is the wrapper class for the basic type long. When you operate on a basic type, you typically convert to the corresponding wrapper class to use the corresponding method.

6.

Note the difference between if and foreach.

7.

Type conversion?

OA uploading and editing data