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這種情況你可以使用反射去寫一個通用的方法，不過前提是你的32313133353236313431303231363533e4b893e5b19e31333363393664那些實體類都是簡單的包裝類，稍后奉上代碼。代碼如下：package?pojo;

/**

*?Created?by?liaokai?on?2017/11/17?0017.

*/

public?class?Person?{

private?String?name;

private?int?age;

public?Person(String?name,?int?age)?{

this.name?=?name;

this.age?=?age;

}

public?String?getName()?{

return?name;

}

public?void?setName(String?name)?{

this.name?=?name;

}

public?int?getAge()?{

return?age;

}

public?void?setAge(int?age)?{

this.age?=?age;

}

@Override

public?boolean?equals(Object?o)?{

if?(this?==?o)?return?true;

if?(o?==?null?||?getClass()?!=?o.getClass())?return?false;

Person?person?=?(Person)?o;

if?(age?!=?person.age)?return?false;

return?name?!=?null???name.equals(person.name)?:?person.name?==?null;

}

@Override

public?int?hashCode()?{

int?result?=?name?!=?null???name.hashCode()?:?0;

result?=?31?*?result?+?age;

return?result;

}

@Override

public?String?toString()?{

return?"Person{"?+

"name='"?+?name?+?'\''?+

",?age="?+?age?+

'}';

}

}

package?util;

import?pojo.Person;

import?java.lang.reflect.Field;

import?java.util.ArrayList;

import?java.util.HashMap;

import?java.util.List;

import?java.util.Map;

/**

*?Created?by?liaokai?on?2017/11/17?0017.

*/

public?class?CompareUtil?{

public?List?compareT(T?t1,T?t2,String?className){

List?list?=?new?ArrayList();

//內容沒改變直接返回

if(t1.equals(t2)){

return?list;

}

try?{

Class?c?=?Class.forName(className);

//讀取t1和t2中的所有屬性

Field[]?fields?=?c.getDeclaredFields();

for?(int?i?=?0;?i?

Field?field?=fields[i];

field.setAccessible(true);

Object?value1=field.get(t1);

Object?value2=field.get(t2);

//判斷這兩個值是否相等

if(!isValueEquals(value1,value2)){

Map?map?=?new?HashMap();

map.put("name",field.getName());

map.put("before",value1);

map.put("after",value2);

list.add(map);

}

}

}?catch?(ClassNotFoundException?e)?{

e.printStackTrace();

}?catch?(IllegalAccessException?e)?{

e.printStackTrace();

}

return?list;

}

private?boolean?isValueEquals(Object?value1,?Object?value2)?{

if(value1==null&&value2==null){

return?true;

}

if(value1==null&&value2!=null){

return?false;

}

if(value1.equals(value2)){

return?true;

}

return?false;

}

}

package?pojo;

import?util.CompareUtil;

/**

*?Created?by?liaokai?on?2017/11/17?0017.

*/

public?class?Test?{

public?static?void?main(String[]?args)?{

Person?p1?=?new?Person("張三",14);

Person?p2?=?new?Person("張三",15);

Person?p3?=?new?Person("李四",15);

CompareUtil?compareUtil?=?new?CompareUtil();

System.out.println(compareUtil.compareT(p1,p1,Person.class.getName()));

System.out.println(compareUtil.compareT(p1,p2,Person.class.getName()));

System.out.println(compareUtil.compareT(p1,p3,Person.class.getName()));

System.out.println(compareUtil.compareT(p2,p3,Person.class.getName()));

}

}

//運行結果

[]

[{before=14,?name=age,?after=15}]

[{before=張三,?name=name,?after=李四},?{before=14,?name=age,?after=15}]

[{before=張三,?name=name,?after=李四}]

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