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 javax.servlet.http.HttpServletRequest;
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.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.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;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;/**
* MyBatis攔截器打印不帶問號的完整sql語句
*
* @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 {
Object returnValue;
long start = System.currentTimeMillis();
returnValue = invocation.proceed();
long end = System.currentTimeMillis();
long time = end - start;
RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
HttpServletRequest request = null;
String timeKey = "";
if (requestAttributes != null) {
request = ((ServletRequestAttributes) requestAttributes).getRequest();
}
if (request != null) {
timeKey = (String) request.getAttribute("timeKey");
}
try {
final Object[] args = invocation.getArgs();
MappedStatement ms = (MappedStatement) args[0];
Object parameter = null;
if (invocation.getArgs().length > 1) {
parameter = invocation.getArgs()[1];
}
String sqlId = ms.getId();
BoundSql boundSql = ms.getBoundSql(parameter);
Configuration configuration = ms.getConfiguration();
String sql = getSql(configuration, boundSql, sqlId, time);
// log.info(sql);
// log2.info(timeKey + "\t" + sqlId + "\t:時間「" + time + "」ms");
System.out.println(sql);
} catch (Exception e) {
e.printStackTrace();
}
return returnValue;
}// 封裝了一下sql語句，使得結果返回完整xml路徑下的sql語句節點id + sql語句
public static String getSql(Configuration configuration, BoundSql boundSql, String sqlId, long time) {
String sql = showSql(configuration, boundSql);
StringBuilder str = new StringBuilder(100);
str.append("\n\n============================ sql begin================================\n");
str.append(sqlId);
str.append(":時間「");
str.append(time);
str.append("」ms\n");
str.append(sql);
str.append("\n============================sql end================================");
return str.toString();
}// 如果參數是String，則添加單引號， 如果是日期，則轉換爲時間格式器並加單引號； 對參數是null和不是null的情況作了處理
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;
}// 進行？的替換
public static String showSql(Configuration configuration, BoundSql boundSql) {
// 獲取參數
Object parameterObject = boundSql.getParameterObject();
List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();
// sql語句中多個空格都用一個空格代替
String sql = boundSql.getSql().replaceAll("[\\s]+", " ");
if (CollectionUtils.isNotEmpty(parameterMappings) && parameterObject != null) {
// 獲取類型處理器註冊器，類型處理器的功能是進行java類型和數據庫類型的轉換
TypeHandlerRegistry typeHandlerRegistry = configuration.getTypeHandlerRegistry();
// 如果根據parameterObject.getClass(）可以找到對應的類型，則替換
if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) {
sql = sql.replaceFirst("\\?", Matcher.quoteReplacement(getParameterValue(parameterObject)));
} else {
// MetaObject主要是封裝了originalObject對象，提供了get和set的方法用於獲取和設置originalObject的屬性值,主要支持對JavaBean、Collection、Map三種類型對象的操作
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)) {
// 該分支是動態sql
Object obj = boundSql.getAdditionalParameter(propertyName);
sql = sql.replaceFirst("\\?", Matcher.quoteReplacement(getParameterValue(obj)));
} else {
// 打印出缺失，提醒該參數缺失並防止錯位
sql = sql.replaceFirst("\\?", "缺失");
}
}
}
}
return sql;
}@Override
public Object plugin(Object target) {
return Plugin.wrap(target, this);
}@Override
public void setProperties(Properties properties) {}
}
Mybatis配置文件中添加:
<！--該路徑是攔截器文件的路徑 dao.Interceptor是攔截器文件的包名稱>
<plugins>
<plugin interceptor="dao.Interceptor.MybatisInterceptor">
</plugin>
</plugins>
需要注意的是<plugins>添加順序
"(properties?,settings?,typeAliases?,typeHandlers?,objectFactory?,objectWrapperFactory?,plugins?,environments?
,databaseIdProvider?,mappers?)"。
要不然會報錯.