javaBean中 字符串 转 date 类型转换

1-----创建javabean 代码如下

 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 + "]";
     }
 }

2------java代码测试

 @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);
         }

--------测试结果