SPRINGMVC Converter and formatting

SPRINGMVC framework: Formatting and converters

Converter (formatted), Formatter (Converter)

First, Converter class

2, Converter: Any layer can, Formatter: specifically for the web layer design

The converter of 3.Spring is an object that converts one type into another type. Create the converter class as a step:

1.org.springframework.core.convert.converter.converter

The declaration of this interface:

4.public interface Converter<s,t>-S is the source type, T is the target type

Example: Long, double type

Public classname implements converter<long,date>{}

Implementation method:

The T-convert (s source) method is a source type that passes in an S

Focus

1, using the Bean constructor method can be configured to inject

Write Bean---org.springframework.context.support.conversion.ServicefactoryBean;

<properties name = "Converters" >

<list><bean class = "Custom class name full path"/></list>

</properties>

2, define the configuration of a

<mvc:anntation-driven conversion-service = "corresponding Beanid" >

3. Other Precautions:

Use of the bindresulting and Getfielderror () methods

Second, formatter class

1, limit source-string, must be: Source type: Can only be String, apply to Web hierarchy

2. Example: Convert to Type:

public interface formatter<t>

Org.springfamework.format.Formatter

3. Method: Parse (), print ()

4. Configure a Factorybean in the spring configuration file Why not say more, the rest of the converter class is almost as well as to illustrate the formatter-formatterregister implementation Registerformatters Method-Addformatter (Class)

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SPRINGMVC Converter and formatting