DAOを反射するときに役立ちます
USER VO
Main
package com.hcwy.test.bean;
import java.util.Date;
public class User {
private Integer userId;
private String userName;
private String password;
private String name;
private String email;
private Date registTime;
private String userRole;
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Date getRegistTime() {
return registTime;
}
public void setRegistTime(Date registTime) {
this.registTime = registTime;
}
public Integer getUserId() {
return userId;
}
public void setUserId(Integer userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserRole() {
return userRole;
}
public void setUserRole(String userRole) {
this.userRole = userRole;
}
}
Main
package com.hcwy.test.oper;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Date;
import com.hcwy.test.bean.User;
public class Operate {
/**
* @param args
*/
public static void main(String[] args) {
int qq=0;
User user=new User();
user.setEmail("1");
user.setName("11");
user.setPassword("111");
user.setRegistTime(new Date());
user.setUserId(1);
user.setUserName("aa");
user.setUserRole("aa");
Object u=user;
Class c=u.getClass();
Field f[]= c.getDeclaredFields();
for (int i = 0; i < f.length; i++) {
// System.out.println(f[i].getName());
String name="get"+f[i].getName().substring(0,1).toUpperCase()+f[i].getName().substring(1);
System.out.println(name);
try {
Method m=c.getMethod(name, null);
Object obj=m.invoke(u, null);
if (obj instanceof String) {
qq++;//JDBC
}
} catch (SecurityException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
System.out.println(" "+qq+" String");
}
}