jaxb绑定中的java.util.date问题
在spring mvc3中JACKSON序列化日期格式的问题（http://jackyrong.iteye.com/admin/blogs/1089909）一文中，提到了相关的日期问题。同样地，如果在JAXB中，REST形式返回的话，也有这样的问题，继续看例子：

1）POJO类：
package com.loiane.model;

import java.util.Date;

public class Company {

private int id;

private String company;

private double price;

private double change;

private double pctChange;

private Date lastChange;

//getters and setters

2）现在要返回company的集合，而且要用JAXB包装
import java.util.List;

import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement(name="companies")
public class Companies {

@XmlElement(required = true)
private List<Company> list;

public void setList(List<Company> list) {
this.list = list;
}
}
而在SPRING CONTROLLER中，要返回如下的：
@RequestMapping(value="/company/view.action")
public @ResponseBody Companies view() throws Exception {}

这时，返回的XML为如下：
<companies>
<list>
<change>0.02</change>
<company>3m Co</company>
<id>1</id>
<lastChange>2011-09-01T00:00:00-03:00</lastChange>
<pctChange>0.03</pctChange>
<price>71.72</price>
</list>
<list>
<change>0.42</change>
<company>Alcoa Inc</company>
<id>2</id>
<lastChange>2011-09-01T00:00:00-03:00</lastChange>
<pctChange>1.47</pctChange>
<price>29.01</price>
</list>
</companies>
可以看到，时间格式不是很好使，于是我们自定义进行格式化一下：
package com.loiane.util;

import java.text.SimpleDateFormat;
import java.util.Date;

import javax.xml.bind.annotation.adapters.XmlAdapter;

public class JaxbDateSerializer extends XmlAdapter<String, Date>{

private SimpleDateFormat dateFormat = new SimpleDateFormat("MM-dd-yyyy");

@Override
public String marshal(Date date) throws Exception {
return dateFormat.format(date);
}

@Override
public Date unmarshal(String date) throws Exception {
return dateFormat.parse(date);
}
}

这里继承了XmlAdapter，并且进行了marshal和unmarshal，就是字符串日期和日期转字符，使用时，注意加上 @XmlJavaTypeAdapter 标签，如下
import java.util.Date;

import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;

import com.loiane.util.JaxbDateSerializer;

public class Company {

private int id;

private String company;

private double price;

private double change;

private double pctChange;

private Date lastChange;

@XmlJavaTypeAdapter(JaxbDateSerializer.class)
public Date getLastChange() {
return lastChange;
}
//getters and setters
}
结果就正确输出了；
<companies>
<list>
<change>0.02</change>
<company>3m Co</company>
<id>1</id>
<lastChange>09-01-2011</lastChange>
<pctChange>0.03</pctChange>
<price>71.72</price>
</list>
<list>
<change>0.42</change>
<company>Alcoa Inc</company>
<id>2</id>
<lastChange>09-01-2011</lastChange>
<pctChange>1.47</pctChange>
<price>29.01</price>
</list>
</companies> 1 楼 Technoboy 2011-06-23 就凭你这头像是和学友哥，我就得顶你 2 楼 wei_feng 2011-06-24 哥我今天回去自己也合成一个去