beanUtils操作javabean的属性（常…

1、首先要新建一个Folder，命名为lib--->把common-beanutils-1.8.0.java和common-logging.java放进去--->修改这两个的Builderpath--Add Path

package com.zb.cn;

import java.util.Date;

public class Person {

private String name;

private String password;

private int age;

private Date brithday;

public String getAb()

{

return null;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getPassword() {

return password;

}

public void setPassword(String password) {

this.password = password;

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

public Date getBrithday() {

return brithday;

}

public void setBrithday(Date brithday) {

this.brithday = brithday;

}

}//Person.java

---------------------------------------------------------------------------------------------------------------

package com.zb.cn;

import java.lang.reflect.InvocationTargetException;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.HashMap;

import java.util.Map;

import org.apache.commons.beanutils.BeanUtils;

import org.apache.commons.beanutils.ConversionException;

import org.apache.commons.beanutils.ConvertUtils;

import org.apache.commons.beanutils.Converter;

importorg.apache.commons.beanutils.locale.converters.DateLocaleConverter;

import org.junit.Test;

//使用beanUtils操作javabean的属性(第三方)

public class Demo1 {

 

@Test

public void test1() throws Exception, Exception

{

Person p = new Person();

BeanUtils.setProperty(p, "name", "xcc");

System.out.println(p.getName());

}

@Test

public void test2() throws Exception, Exception

{

String name = "aaaa";

String password = "123";

String age = "34";

String brithday = "1995-10-06";

Person p = new Person();

BeanUtils.setProperty(p, "name", "aaaa");

BeanUtils.setProperty(p, "password", "123");

BeanUtils.setProperty(p, "age", "34");//只支持8种基本数据类型

//BeanUtils.setProperty(p, "brithday","1995-10-06");//不是八种基本数据类型，必须使用转换器

System.out.println(p.getName());

System.out.println(p.getPassword());

System.out.println(p.getAge());

}

//为了让日期赋到bean的brithday属性上，我们给beanUtils注册一个日期转换器

//自己注册转换器

@Test

public void test3() throws Exception,Exception

{

String name = "aaaa";

String password = "123";

String age = "34";

String brithday ="1995-10-06";

//注册日期转换器

ConvertUtils.register(new Converter(){

@Override

public Object convert(Class type, Objectvalue) {

// TODO Auto-generated methodstub

if(value==null)//数据先检查再使用

{

return null;

}

if(!(value instanceofString))

{

throw newConversionException("只支持String类型的转换！");

}

String str = (String)value;

if(str.trim().equals(""))

{

return null;

}

SimpleDateFormat df = newSimpleDateFormat("yyyy-MM-dd");

try {

return df.parse(str);

} catch (ParseException e){

throw newRuntimeException(e);//异常链不能断

}

}

},Date.class);//这里需要导Convert的源码，就是那个source.java包

Person p = new Person();

BeanUtils.setProperty(p, "name","aaaa");

BeanUtils.setProperty(p, "password","123");

BeanUtils.setProperty(p, "age","34");//只支持8种基本数据类型

BeanUtils.setProperty(p, "brithday","1995-10-06");//不是八种基本数据类型，必须使用转换器

System.out.println(p.getName());

System.out.println(p.getPassword());

System.out.println(p.getAge());

System.out.println(p.getBrithday());

}

//使用php的转换器

@Test

public void test4() throws Exception,Exception

{

String name = "aaaa";

String password = "123";

String age = "34";

String brithday ="1995-10-06";

ConvertUtils.register(newDateLocaleConverter(), Date.class);

Person p = new Person();

BeanUtils.setProperty(p, "name","aaaa");

BeanUtils.setProperty(p, "password","123");

BeanUtils.setProperty(p, "age","34");//只支持8种基本数据类型

BeanUtils.setProperty(p, "brithday",brithday);//不是八种基本数据类型，必须使用转换器

System.out.println(p.getName());

System.out.println(p.getPassword());

System.out.println(p.getAge());

System.out.println(p.getBrithday());

}

@Test

public void test5() throws Exception, Exception

{

Map map = new HashMap();//客户机提交的数据都使用map进行封装

map.put("name", "aaa");

map.put("password", "123");

map.put("age", "23");

map.put("brithday", "1995-10-06");

ConvertUtils.register(new DateLocaleConverter(),Date.class);

Person bean = new Person();

BeanUtils.populate(bean, map);//填充

System.out.println(bean.getName());

System.out.println(bean.getPassword());

System.out.println(bean.getAge());

System.out.println(bean.getBrithday());

}

}