javaBean中 字符串 转 date 类型转换

package BeanUtils;
import java.util.Date;
public class Admin {
private String userName;
private String age;
private Date birth;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}

public Date getBirth() {
return birth;
}
public void setBirth(Date birth) {
this.birth = birth;
}
@Override
public String toString() {
return "Admin [userName=" + userName + ", age=" + age + ", birth=" + birth + "]";
}
}

@Test
public void test2(){
String userName = "Jack";
String age = "25";
String birth = "1995-08-08";
Admin admin = new Admin();
//注册日期类型转换
ConvertUtils.register(new Converter() {
@Override
public Object convert(Class type, Object value) {
//判断
if(type != Date.class){
return null;
}
if(value == null || "".equals(value.toString().trim())){
return null;
}
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
try {
return dateFormat.parse(value.toString());
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
}, Date.class);
// 把表单提交的数据，封装到对象中
try {
BeanUtils.copyProperty(admin, "userName", userName);
BeanUtils.copyProperty(admin, "age", age);
BeanUtils.copyProperty(admin, "birth", birth);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
throw new RuntimeException(e);
}
System.err.println(admin);
}

//2. 使用提供的日期类型转换器工具类
@Test
public void test3() throws Exception {
// 模拟表单数据
String name = "jack";
String age = "20";
String birth = "1998-08-25";
// 对象
Admin admin = new Admin();
// 注册日期类型转换器：2， 使用组件提供的转换器工具类
ConvertUtils.register(new DateLocaleConverter(), Date.class);
// 把表单提交的数据，封装到对象中
BeanUtils.copyProperty(admin, "userName", name);
BeanUtils.copyProperty(admin, "age", age);
BeanUtils.copyProperty(admin, "birth", birth);
//------ 测试------
System.out.println(admin);
}