MyBatis拦截器打印不带问号的完整sql语句拦截器
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("\\?",
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("\\?",
Matcher.quoteReplacement(getParameterValue(obj)));
}
else if (boundSql.hasAdditionalParameter(propertyName))
{
// 该分支是动态sql
Object obj = boundSql.getAdditionalParameter(propertyName);
sql = sql.replaceFirst("\\?",
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("\\?", "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>
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