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