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