spring mvc4的日期/数字格式化、枚举转换示例

package com.cnblogs.yjmyzz.test;

import java.math.BigDecimal;
import java.util.Date;
import java.util.Locale;

import org.junit.Test;
import org.springframework.context.i18n.LocaleContextHolder;
import org.springframework.format.datetime.DateFormatter;
import org.springframework.format.number.CurrencyFormatter;
import org.springframework.format.support.DefaultFormattingConversionService;

public class FormatterTest {

  @Test
  public void testFormatter() {
    
    //设置上下语言的语言环境
    LocaleContextHolder.setLocale(Locale.US);
    
    //--------测试日期格式化----------
    Date d = new Date();
    DateFormatter dateFormatter = new DateFormatter();
    //按中文格式输出日期
    System.out.println(dateFormatter.print(d, Locale.CHINESE));//2014-10-30  
    
    DefaultFormattingConversionService conversionService = new DefaultFormattingConversionService();
    //添加前面的DateFormatter
    conversionService.addFormatter(dateFormatter);
    
    System.out.println(conversionService.convert(d, String.class));//Oct 30, 2014
    
    dateFormatter.setPattern("yyyy年MM月dd日");    
    System.out.println(conversionService.convert(d, String.class));//2014年10月30日
    
    // --------测试货币格式化-------------
    CurrencyFormatter currencyFormatter = new CurrencyFormatter();
    BigDecimal money = new BigDecimal(1234567.890);
    System.out.println(currencyFormatter.print(money, Locale.CHINA));//￥1,234,567.89
    conversionService.addFormatter(currencyFormatter);
    System.out.println(conversionService.convert(money, String.class));//$1,234,567.89  
    

  }

}

 <mvc:annotation-driven  conversion-service="conversionService" />
 
  <bean id="conversionService"
     class="org.springframework.format.support.FormattingConversionServiceFactoryBean">    
  </bean>

@NumberFormat(style=Style.CURRENCY)
  //@NumberFormat(pattern="#,###.00")
  double amount;  

  @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
  Date createTime;

<spring:eval expression="c.amount" />         
<spring:eval expression="c.createTime" />

package com.cnblogs.yjmyzz.enums;

public enum SEX {

  /**
   * 男
   */
  Male("1", "男"),

  /**
   * 女
   */
  Female("-1", "女"),

  /**
   * 保密
   */
  Unknown("0", "保密");

  private final String value;

  private final String description;

  private SEX(String v, String desc) {
    this.value = v;
    this.description = desc;
  }

  public String getValue() {
    return value;
  }

  public String getDescription() {
    return description;
  }

  public static SEX get(String strValue) {
    for (SEX e : values()) {
      if (e.getValue().equals(strValue)) {
        return e;
      }
    }
    return null;
  }

  @Override
  public String toString() {
    return this.value;
  }

}

package com.cnblogs.yjmyzz.convertor;

import org.springframework.core.convert.converter.Converter;
import com.cnblogs.yjmyzz.enums.SEX;

public class String2SexConvertor implements Converter<String, SEX> {

  @Override
  public SEX convert(String enumValueStr) {
    String value = enumValueStr.trim();
    if (value.isEmpty()) {
      return null;
    }
    return SEX.get(enumValueStr);
  }
}

<bean id="conversionService"
    class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
    <property name="converters">
      <set>
        <bean class="com.cnblogs.yjmyzz.convertor.String2SexConvertor" />
      </set>
    </property>
  </bean>

<form:radiobuttons path="sex" items="${sexMap}" delimiter="&nbsp;" />

package com.cnblogs.yjmyzz.repository;

import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;

import com.cnblogs.yjmyzz.enums.SEX;

public class EnumRepository {
  static Map<String, String> sexMap = null;

  public static Map<String, String> getSexMap() {
    if (sexMap == null) {
      sexMap = new HashMap<String, String>();
      EnumSet<SEX> sexs = EnumSet.allOf(SEX.class);
      for (SEX sex : sexs) {
        sexMap.put(sex.getValue(), sex.getDescription());
      }
    }
    return sexMap;
  }

}

@RequestMapping(value = "edit/{id}")
  public ModelAndView edit(@PathVariable int id, HttpServletRequest request,
      HttpServletResponse response) throws Exception {
    ModelAndView model = new ModelAndView();
    Order order = orderService.get(id + "");
    model.addObject("sexMap", EnumRepository.getSexMap());//枚举列表,便于页面绑定
    model.addObject("data", order);
    model.setViewName("orders/edit");
    return model;
  }

${c.sex}/${c.sex.description}/${c.sex.value}