1.期望：将【username】从'111'改成'222';将【address】从'这是一个测试数据'改成'这是一个真实数据';
2.导入jar
代码语言：javascript复制 <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.5.21.RELEASE</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.8.1</version>
</dependency>3.model类
代码语言：javascript复制public class UserModel {
private String username;
private String sex;
private String age;
private String address;
@Override
public String toString() {
return "UserModel [username=" username ", sex=" sex ", age="
age ", address=" address "]";
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
}4.对比类及测试方法
代码语言：javascript复制public class MyBeanCompareTest {
public static void main(String[] args) throws Exception {
UserModel oldData = new UserModel();
oldData.setUsername("111");
oldData.setAddress("这是一个测试数据");
UserModel newData = new UserModel();
newData.setUsername("222");
newData.setAddress("这是一个真实数据");
String desc = compare(oldData, newData);
System.out.println(desc);
}
private static String compare(UserModel oldData, UserModel newData) throws Exception {
StringBuffer content = new StringBuffer();
Class clazz = newData.getClass();
Field[] fields = clazz.getDeclaredFields();
for (Field field : fields) {
// with modifiers "private"
ReflectionUtils.makeAccessible(field);
Object newValue = field.get(newData);
System.out.print("fieldName=" field.getName() ",fieldValue=" String.valueOf(newValue));
Object oldValue = field.get(oldData);
System.out.println("tfieldName=" field.getName() ",fieldValue=" String.valueOf(oldValue));
if(newValue != null && newValue != oldValue){
content.append("将【");
content.append(field.getName());
content.append("】");
content.append("从'");
content.append(String.valueOf(newValue));
content.append("'改成'");
content.append(String.valueOf(oldValue));
content.append("';");
}
}
return content.toString();
}
}
