我有一个使用 <mvc:annotation-driven />
的 Spring 3 MVC 应用程序.无法让 java.lang.Double 属性在 <form:input>
中显示为货币标签。金额显示正确,但未应用任何格式。有什么指导吗?
Spring 配置:
<mvc:annotation-driven conversion-service="conversionService">
<mvc:argument-resolvers>
<bean class="com.my.SessionUserHandlerMethodArgumentResolver"/>
</mvc:argument-resolvers>
</mvc:annotation-driven>
<bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean">
<property name="converters">
<list>
<bean class="com.my.StringToDoubleConverter" />
</list>
</property>
</bean>
域实体字段注释:
import org.springframework.format.annotation.NumberFormat;
import org.springframework.format.annotation.NumberFormat.Style;
@Entity
@Table(name="form_data_wire_transfers")
@PrimaryKeyJoinColumn(name="form_id")
public class WireRequestForm extends RequestForm {
private Double amount;
@Column(name="amount")
@NumberFormat(style=Style.CURRENCY)
public Double getAmount() {
return amount;
}
public void setAmount(Double amount) {
this.amount = amount;
}
}
Controller 方法:
@RequestMapping(value="/forms/{formId}", method=RequestMethod.GET)
public String show(Model uiModel, @PathVariable("formId") Integer formId){
RequestForm form = formService.findOne(formId);
uiModel.addAttribute("form", form);
return "show/form";
}
查看:
<form:form modelAttribute="form" action="${saveFormUrl}" method="POST">
<!-- AMOUNT -->
<div>
<form:label path="amount">Amount</form:label>
<form:input path="amount" />
</div>
</form:form>
我再次看到该值,但它显示为 1111.0 与 $1,111.00。
最佳答案
ConversionServiceFactoryBean
不注册默认格式化程序。
你需要使用FormattingConversionServiceFactoryBean
照下面做
<bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
<property name="converters">
<list>
<bean class="com.my.StringToDoubleConverter" />
</list>
</property>
</bean>
如果你只想使用 NumberFormatAnnotationFormatterFactory
进行数字格式化(处理 @NumberFormat
Annotation )并禁用它的其他默认格式化程序,然后按以下操作
<bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
<property name="registerDefaultFormatters" value="false" />
<property name="formatters">
<set>
<bean class="org.springframework.format.number.NumberFormatAnnotationFormatterFactory" />
</set>
</property>
<property name="converters">
<list>
<bean class="com.my.StringToDoubleConverter" />
</list>
</property>
</bean>
来源:Spring Docs
关于java - Spring 3 @NumberFormat 不适用于表单 :input Tag,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/18515027/