STRUTS2 type converter, type conversion error, and input view

1.1.1 Type converters in Struts2

Struts2 built-in common data types a variety of converters

Boolean and Boolean

Char and Character

int and Integer

Long and long

float and float

Double and Double

Date can receive the YYYY-MM-DD format string

An array can convert more than one parameter of the same name into an array

Collection supports saving data to a List or Map collection

1.1.2 Error in type conversion in STRUTS2:

1.NoSuchMethodException Exceptions:

The background requires an int type to enter ABC in the page.

* reported an exception: Nosuchmethodexception (no exception for this method.)

* Normal input setage (int age);

* Enter a abc:setage (String age);---no way

String--->date. But the format of date must be YYYY-MM-DD not the date in this format, and an error will be added: nosuchmethodexception

2. You need to configure an input logical view:

* <result name= "input" >/demo3/demo1.jsp</result>

* Use <s:fielderror/>---in the page to get error messages in the Fielderror area. The page needs to enter the relevant tablib .... Uri= '/struts-tags ' profix= ' s '

3. Display Chinese information:

* Create a property file with the same name as the action class under the package that contains the action class.

* Customeraction.properties

* The key value of the property file: Invalid.fieldvalue. property name = Error message

STRUTS2 type converter, type conversion error, and input view