BeanUtilsを使用したBeanプロパティの操作
3841 ワード
package com.wzh.test.beanutils;
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;
import org.apache.commons.beanutils.locale.converters.DateLocaleConverter;
import org.junit.Test;
// BeanUtils Bean ( )
public class Demo1 {
@Test
public void test1() throws IllegalAccessException,
InvocationTargetException {
Person p = new Person();
BeanUtils.setProperty(p, "name", "victor");
System.out.println(p.getName());
}
@Test
public void test2() throws IllegalAccessException,
InvocationTargetException {
Person p = new Person();
// String int 8
BeanUtils.setProperty(p, "age", "23");
//
BeanUtils.setProperty(p, "Birthday", "2012-3-1");
System.out.println(p.getAge());
System.out.println(p.getBirthday());
}
@Test
public void test3() throws IllegalAccessException,
InvocationTargetException {
// Bean Birthday , BeanUtils ( , )
// 1.
ConvertUtils.register(new Converter() {
@Override
public Object convert(Class type, Object value) {
if (value == null)
return null;
if (!(value instanceof String)) {
System.out.println(" ");
throw new ConversionException(" ");
}
String str = (String) value;
if (str.trim().equals(str)) {
return null;
}
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
try {
return df.parse(str);
} catch (ParseException e) {
throw new RuntimeException(e);//
}
}
}, Date.class);
// ConvertUtils.register(new DateLocaleConverter(), Date.class);
Person p = new Person();
// String int 8
BeanUtils.setProperty(p, "birthday", "2012-12-12");
System.out.println(p.getBirthday());
}
@Test
public void test4() throws IllegalAccessException,
InvocationTargetException {
Map map = new HashMap();
map.put("name", "aa");
map.put("birthday", "2012-1-1");
ConvertUtils.register(new DateLocaleConverter(), Date.class);
Person p = new Person();
// String int 8
BeanUtils.populate(p, map);// Map Bean
System.out.println(p.getBirthday());
}
}
package com.wzh.test.beanutils;
import java.util.Date;
public class Person {
public Person() {
super();
// TODO Auto-generated constructor stub
}
private String name;
private String age;
private Date birthday;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
}