Commons beanutils组件简介

java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory 
at org.apache.commons.beanutils.ConvertUtilsBean.(ConvertUtilsBean.java:157) 
at org.apache.commons.beanutils.BeanUtilsBean.(BeanUtilsBean.java:117) 
at org.apache.commons.beanutils.BeanUtilsBean$1.initialValue(BeanUtilsBean.java:68) 
at

BeanUtils.copyProperty(admin, "userName", "jack");
BeanUtils.setProperty(admin, "age", 18);

BeanUtils.copyProperties(newAdmin, admin);

BeanUtils.populate(adminMap, map);

package com.beanutils.test;
import java.util.Date;
/**
 * 1. bean类设计
 * @author Charlie.chen
 *
 */
public class Admin {
 private int id;
 private String userName;
 private String pwd;
 private int age;
 private Date birth;
 public Date getBirth() {
 return birth;
 }
 public void setBirth(Date birth) {
 this.birth = birth;
 }
 public int getAge() {
 return age;
 }
 public void setAge(int age) {
 this.age = age;
 }
 public String getPwd() {
 return pwd;
 }
 public void setPwd(String pwd) {
 this.pwd = pwd;
 }
 public int getId() {
 return id;
 }
 public void setId(int id) {
 this.id = id;
 }
 public String getUserName() {
 return userName;
 }
 public void setUserName(String userName) {
 this.userName = userName;
 }
 @Override
 public String toString() {
 return "Admin [age=" + age + ", birth=" + birth + ", id=" + id
 + ", pwd=" + pwd + ", userName=" + userName + "]";
 } 
}

@Test
 public void test1() throws Exception {
 // a. 基本操作
 Admin admin = new Admin();
 //admin.setUserName("Charlie.chen");
 //admin.setPwd("999");
 // b. BeanUtils组件实现对象属性的拷贝
 BeanUtils.copyProperty(admin, "userName", "jack");
 BeanUtils.setProperty(admin, "age", 18);
 // 总结1： 对于基本数据类型，会自动进行类型转换!
 // c. 对象的拷贝
 Admin newAdmin = new Admin();
 BeanUtils.copyProperties(newAdmin, admin);
 // d. map数据，拷贝到对象中
 Admin adminMap = new Admin();
 Map<String,Object> map = new HashMap<String,Object>();
 map.put("userName", "Jerry");
 map.put("age", 29);
 // 注意：map中的key要与javabean的属性名称一致
 BeanUtils.populate(adminMap, map);
 // 测试
 System.out.println(adminMap.getUserName());
 System.out.println(adminMap.getAge());
 }

 //1.自定义日期类型转换器
 @Test
 public void test2() throws Exception {
 // 模拟表单数据
 String name = "jack";
 String age = "20";
 String birth = " ";
 // 对象
 Admin admin = new Admin();
 // 注册日期类型转换器：1， 自定义的方式
 ConvertUtils.register(new Converter() {
 // 转换的内部实现方法，需要重写
 @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;
 }
 try {
 // 字符串转换为日期
 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
 return sdf.parse(value.toString());
 } catch (ParseException e) {
 throw new RuntimeException(e);
 }
 }
 },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);
 }
 //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 = null;
 // 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);
 }