SPRINGMVC Accept Date Type parameter processing

SPRINGMVC Accept Date type parameter processing

The problem, that is, how to springmvc the conversion of parameter types

Scenario 1 Initbinder

Adding data bindings to the controller

1 @InitBinder  
2 public void Initbinder (Webdatabinder binder) {  
3 SimpleDateFormat dateformat = new Simpledateform at ("Yyyy-mm-dd");  
4 dateformat.setlenient (false);  
5 Binder.registercustomeditor (Date.class, New Customdateeditor (DateFormat, True));   True: Allow null value to be entered, false: cannot be null

Scenario 2 Converter

To pass the client over. A string type, converted to a date type, for example:

1.controller

/**
     * Receive date type parameter
     *     NOTE:
     *         SPRINGMVC when receiving date type parameter, if do not do special processing will appear 400 syntax format error
     *  Resolution
     *      1. Global Date Processing
     * 
     *
    
    /@RequestMapping ("/test") public
    String test (date birthday) {
        System.out.println (birthday);
        Return "index";
    }

2. Custom type conversion rules

SPRINGMVC provides the converter interface, which supports converting from one object to another object

/**
 * Global Date Processing class
 * convert<t,s>
 *         generic T: Parameter submitted on behalf of the client String
 *         generic S: type converted by convert
   
 */Public
class Dateconvert implements Converter<string, date> {

    @Override public
    Date Convert (String stringdate) {
        SimpleDateFormat SimpleDateFormat = new SimpleDateFormat ("Yyyy-mm-dd");
        try {
            return Simpledateformat.parse (stringdate),
        } catch (ParseException e) {
            e.printstacktrace ();
        }
        return null;
    }

}

3. Registering the custom type conversion class

<!--step Three: Register the processor Mapper/processor adapter, add Conversion-service Properties--
    <mvc:annotation-driven conversion-service= " Conversionservice "/>
   
    <!--Step Two: Create Convertion-service and inject dateconvert-->
    <bean id=" Conversionservice "class=" Org.springframework.format.support.FormattingConversionServiceFactoryBean ">
        <property name= "Converters" >
            <set>
                <ref bean= "Dateconvert"/>
            </set>
        < /property>
    </bean>
    <!--first step:  Create a custom date conversion rule--   
    <bean id= "Dateconvert" class= " Zpark.convert.DateConvert "/>