package com.zkn.reflect.classinfo;
import java.lang.reflect.Field;
import java.lang.reflect.Type;
import com.zkn.reflect.scope.Company;
import com.zkn.reflect.scope.People;
/**
* <p>Title: </p>
*
* <p>Description: </p>
*
*
* @since：2015-5-25 下午07:02:09
*
*/
public class ClassInfo {
public static void getParameters(Class<?> clazz) {
Field[] fields = clazz.getDeclaredFields();
for(Field f : fields){
System.out.println(f.getName());
}
}
public static void getFieldsValue(Object obj) {
Field[] fields = obj.getClass().getDeclaredFields();
/**
* 基本类型、包装类型、String类型
*/
String[] types = {"java.lang.Integer",
"java.lang.Double",
"java.lang.Float",
"java.lang.Long",
"java.lang.Short",
"java.lang.Byte",
"java.lang.Boolean",
"java.lang.Character",
"java.lang.String",
"int","double","long","short","byte","boolean","char","float"};
for(Field f : fields){
f.setAccessible(true);
try {
for(String str : types) {
if(f.getType().getName().equals(str))
System.out.println("字段："+f.getName()+" 类型为："+f.getType().getName()+" 值为："+ f.get(obj));
}
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) throws Exception {
People people = new People();
people.setAge(12);
people.setSex("男");
Company company = new Company();
company.setAddress("北京");
company.setName("科技股份有限公司");
people.setCompany(company);
people.setMoney(1000.00);
getFieldsValue(people);
}
}
package com.zkn.reflect.scope;
/**
* <p>Title: </p>
*
* <p>Description: </p>
*
*
* @since：2015-5-25 下午07:04:22
*
*/
public class People {
/**
* 姓名
*/
private String name;
/**
* 性别
*/
private String sex;
/**
* 年龄
*/
private int age;
/**
* 地址
*/
private String address;
/**
* 学校
*/
public String school;
/**
* 公司
*/
private Company company;
/**
* 金额
*/
private Double money;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getSchool() {
return school;
}
public void setSchool(String school) {
this.school = school;
}
public Company getCompany() {
return company;
}
public void setCompany(Company company) {
this.company = company;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Double getMoney() {
return money;
}
public void setMoney(Double money) {
this.money = money;
}
}
package com.zkn.reflect.scope;
/**
* <p>Title: </p>
*
* <p>Description: </p>
*
*
* @since：2015-5-28 下午12:52:55
*
*/
public class Company {
/**
* 公司名称
*/
private String name;
/**
* 公司地址
*/
private String address;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
@Override
public String toString() {
return "Company [name=" + name + ", address=" + address + "]";
}
}
输出结果：
字段：name 类型为：java.lang.String 值为：null
字段：sex 类型为：java.lang.String 值为：男
字段：age 类型为：int 值为：12
字段：address 类型为：java.lang.String 值为：null
字段：school 类型为：java.lang.String 值为：null
字段：money 类型为：java.lang.Double 值为：1000.0
