mybatis 通过拦截器实现打印完整的sql语句并执行结果

import java.text.DateFormat;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.Properties;
import java.util.regex.Matcher;
 
import org.apache.commons.collections.CollectionUtils;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.ParameterMapping;
import org.apache.ibatis.plugin.*;
import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;
import org.apache.ibatis.type.TypeHandlerRegistry; 
 
/**
 * MyBatis拦截器打印不带问号的完整sql语句
 * 
 * @author gogym
 * @version 2018年8月13日
 * @see MybatisInterceptor
 * @since
 */
@Intercepts({
 @Signature(type = Executor.class, method = "update", args = {MappedStatement.class,
  Object.class}),
 @Signature(type = Executor.class, method = "query", args = {MappedStatement.class,
  Object.class, RowBounds.class, ResultHandler.class})})
@SuppressWarnings({"unchecked", "rawtypes"})
public class MybatisInterceptor implements Interceptor
{
 @Override
 public Object intercept(Invocation invocation)
  throws Throwable
 {
  try
  {
   // 获取xml中的一个select/update/insert/delete节点，是一条SQL语句
   MappedStatement mappedStatement = (MappedStatement)invocation.getArgs()[0];
   Object parameter = null;
   // 获取参数，if语句成立，表示sql语句有参数，参数格式是map形式
   if (invocation.getArgs().length > 1)
   {
    parameter = invocation.getArgs()[1];
    System.out.println("parameter = " + parameter);
   }
   String sqlId = mappedStatement.getId(); // 获取到节点的id,即sql语句的id
   System.out.println("sqlId = " + sqlId);
   BoundSql boundSql = mappedStatement.getBoundSql(parameter); // BoundSql就是封装myBatis最终产生的sql类
   Configuration configuration = mappedStatement.getConfiguration(); // 获取节点的配置
   String sql = getSql(configuration, boundSql, sqlId); // 获取到最终的sql语句
   System.out.println("sql = " + sql);
  }
  catch (Exception e)
  {
   e.printStackTrace();
  }
  // 执行完上面的任务后，不改变原有的sql执行过程
  return invocation.proceed();
 }
 
 // 封装了一下sql语句，使得结果返回完整xml路径下的sql语句节点id + sql语句
 public static String getSql(Configuration configuration, BoundSql boundSql, String sqlId)
 {
  String sql = showSql(configuration, boundSql);
  StringBuilder str = new StringBuilder(100);
  str.append(sqlId);
  str.append(":");
  str.append(sql);
  return str.toString();
 }
 
 // 如果参数是String，则添加单引号， 如果是日期，则转换为时间格式器并加单引号； 对参数是null和不是null的情况作了处理
 private static String getParameterValue(Object obj)
 {
  String value = null;
  if (obj instanceof String)
  {
   value = "'" + obj.toString() + "'";
  }
  else if (obj instanceof Date)
  {
   DateFormat formatter = DateFormat.getDateTimeInstance(DateFormat.DEFAULT,
    DateFormat.DEFAULT, Locale.CHINA);
   value = "'" + formatter.format(new Date()) + "'";
  }
  else
  {
   if (obj != null)
   {
    value = obj.toString();
   }
   else
   {
    value = "";
   } 
  }
  return value;
 }
 
 // 进行？的替换
 public static String showSql(Configuration configuration, BoundSql boundSql)
 {
  // 获取参数
  Object parameterObject = boundSql.getParameterObject();
  List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();
  // sql语句中多个空格都用一个空格代替
  String sql = boundSql.getSql().replaceAll("[\\s]+", " ");
  if (CollectionUtils.isNotEmpty(parameterMappings) && parameterObject != null)
  {
   // 获取类型处理器注册器，类型处理器的功能是进行java类型和数据库类型的转换
   TypeHandlerRegistry typeHandlerRegistry = configuration.getTypeHandlerRegistry();
   // 如果根据parameterObject.getClass(）可以找到对应的类型，则替换
   if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass()))
   {
    sql = sql.replaceFirst("\\&#63;",
     Matcher.quoteReplacement(getParameterValue(parameterObject))); 
   }
   else
   {
    // MetaObject主要是封装了originalObject对象，提供了get和set的方法用于获取和设置originalObject的属性值,主要支持对JavaBean、Collection、Map三种类型对象的操作
    MetaObject metaObject = configuration.newMetaObject(parameterObject);
    for (ParameterMapping parameterMapping : parameterMappings)
    {
     String propertyName = parameterMapping.getProperty();
     if (metaObject.hasGetter(propertyName))
     {
      Object obj = metaObject.getValue(propertyName);
      sql = sql.replaceFirst("\\&#63;",
       Matcher.quoteReplacement(getParameterValue(obj)));
     }
     else if (boundSql.hasAdditionalParameter(propertyName))
     {
      // 该分支是动态sql
      Object obj = boundSql.getAdditionalParameter(propertyName);
      sql = sql.replaceFirst("\\&#63;",
       Matcher.quoteReplacement(getParameterValue(obj)));
     }
     else
     {
      // 打印出缺失，提醒该参数缺失并防止错位
      sql = sql.replaceFirst("\\&#63;", "缺失");
     }
    }
   }
  }
  return sql;
 }
 
 @Override
 public Object plugin(Object target)
 {
  return Plugin.wrap(target, this);
 }
 
 @Override
 public void setProperties(Properties properties)
 {
 
 } 
}

import java.util.Properties; 
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.plugin.Intercepts;
import org.apache.ibatis.plugin.Invocation;
import org.apache.ibatis.plugin.Plugin;
import org.apache.ibatis.plugin.Signature;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds; 
import com.poly.rbl.utils.FastJsonUtils; 
 
/**
 * 打印结果拦截器 〈功能详细描述〉
 * 
 * @author gogym
 * @version 2019年4月2日
 * @see InterceptorForQry
 * @since
 */
@Intercepts({@Signature(type = Executor.class, method = "query", args = {MappedStatement.class,
 Object.class, RowBounds.class, ResultHandler.class})})
public class InterceptorForQry implements Interceptor
{
 
 @SuppressWarnings({"rawtypes", "unchecked"})
 public Object intercept(Invocation invocation)
  throws Throwable
 {
  Object result = invocation.proceed(); // 执行请求方法，并将所得结果保存到result中
  String str = FastJsonUtils.toJSONString(result);
  System.out.println(str);
  return result;
 }
 
 public Object plugin(Object target)
 {
  return Plugin.wrap(target, this);
 }
 
 public void setProperties(Properties arg0)
 {}
}

<plugins> 
 <!-- 启动SQL打印，带参数 
   <plugin interceptor="com.poly.rbl.plugin.mybatis.MybatisInterceptor">
 </plugin>
 
    <plugin interceptor="com.poly.rbl.plugin.mybatis.InterceptorForQry">
 </plugin> 
 </plugins>