The first:
package com.Interceptor;
import org.apache.ibatis.executor.Executor;
import com.util.AesEncryptUtil;
import com.zhsh.bean.User;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.SqlCommandType;
import org.apache.ibatis.plugin.*;
import java.util.Properties;
/**
* @author flysand on 2018/07/06
**/
@Intercepts({
@Signature(type =Executor.class, method = "update", args = {
MappedStatement.class,Object.class})})
public class myPreInterceptor implements Interceptor {
@Override
public Object intercept(Invocation invocation) throws Throwable {
System.out.println("从这里开始拦截处理，看我的+++++++");
MappedStatement mappedStatement = (MappedStatement) invocation.getArgs()[0];
System.out.println("在这里进行拦截处理++++++=");
Object args=invocation.getArgs()[1];
System.out.println("打印目标对象"+mappedStatement);
//注解中method的值
String methodName = invocation.getMethod().getName();
//sql类型
SqlCommandType sqlCommandType = mappedStatement.getSqlCommandType();
if ("update".equals(methodName)) {
System.out.println("*******sfsa"+args);
if (SqlCommandType.INSERT.equals(sqlCommandType)) {
User user=(User)args;
String user_pwd=user.getUser_pwd();
String user_new_pwd=AesEncryptUtil.encrypt(user_pwd);
user.setUser_pwd(user_new_pwd);
}
}
return invocation.proceed();
}
@Override
public Object plugin(Object target) {
return Plugin.wrap(target, this);
}
@Override
public void setProperties(Properties properties) {
}
}
The second:
package com.Interceptor;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.plugin.*;
import org.springframework.stereotype.Component;
import com.util.AesEncryptUtil;
import com.zhsh.bean.User;
import java.util.Date;
import java.util.Properties;
/**
* 通过注解实现哪些方法进行拦截
*/
@Component
@Intercepts({
@Signature(
type = Executor.class, method = "update", args = {
MappedStatement.class, Object.class})})
public class MySqlInterceptor2 implements Interceptor {
@Override
public Object intercept(Invocation invocation) throws Throwable {
System.out.println("进入拦截层=============");
MappedStatement mappedStatement= (MappedStatement)invocation.getArgs()[0];
Object parameterObject=invocation.getArgs()[1];
BoundSql boundSql= mappedStatement.getSqlSource().getBoundSql(parameterObject);
Date currentData=new Date(System.currentTimeMillis());
String sql=boundSql.getSql();
if(sql.contains("INSERT INTO db_user")||sql.contains("update db_user")) {
User user=(User)parameterObject;
String user_pwd=AesEncryptUtil.encrypt(user.getUser_pwd());
user.setUser_pwd(user_pwd);
user.setCreate_time(currentData);
}
return invocation.proceed();
}
@Override
public Object plugin(Object target) {
return Plugin.wrap(target, this);
}
@Override
public void setProperties(Properties properties) {
}
}
AES encryption
package com.util;
/**
* AES 128bit 加密解密工具类
* @author dufy
*/
import org.apache.tomcat.util.codec.binary.Base64;
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
public class AesEncryptUtil {
//使用AES-128-CBC加密模式，key需要为16位,key和iv可以相同！
private static String KEY = "dufy20170329java";
private static String IV = "dufy20170329java";
/**
* 加密方法
* @param data 要加密的数据
* @param key 加密key
* @param iv 加密iv
* @return 加密的结果
* @throws Exception
*/
public static String encrypt(String data, String key, String iv) throws Exception {
try {
Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");//"算法/模式/补码方式"
int blockSize = cipher.getBlockSize();
byte[] dataBytes = data.getBytes();
int plaintextLength = dataBytes.length;
if (plaintextLength % blockSize != 0) {
plaintextLength = plaintextLength + (blockSize - (plaintextLength % blockSize));
}
byte[] plaintext = new byte[plaintextLength];
System.arraycopy(dataBytes, 0, plaintext, 0, dataBytes.length);
SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec);
byte[] encrypted = cipher.doFinal(plaintext);
return new Base64().encodeToString(encrypted);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 解密方法
* @param data 要解密的数据
* @param key 解密key
* @param iv 解密iv
* @return 解密的结果
* @throws Exception
*/
public static String desEncrypt(String data, String key, String iv) throws Exception {
try {
byte[] encrypted1 = new Base64().decode(data);
Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
cipher.init(Cipher.DECRYPT_MODE, keyspec, ivspec);
byte[] original = cipher.doFinal(encrypted1);
String originalString = new String(original);
return originalString;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 使用默认的key和iv加密
* @param data
* @return
* @throws Exception
*/
public static String encrypt(String data) throws Exception {
return encrypt(data, KEY, IV);
}
/**
* 使用默认的key和iv解密
* @param data
* @return
* @throws Exception
*/
public static String desEncrypt(String data) throws Exception {
return desEncrypt(data, KEY, IV);
}
/**
* 测试
*/
public static void main(String args[]) throws Exception {
String test = "620012";
String data = null;
String key = "dufy20170329java";
String iv = "dufy20170329java";
data = encrypt(test, key, iv);
System.out.println(data);
System.out.println(desEncrypt("5tO9SiCX7VYOPz0xYke1eg==", key, iv));
}
}