【工具】 MyBatis Plus的SQL拦截器自动翻译替换"?"符号为真实数值
使用MyBatis的配置如下所示：
mybatis-plus:
configuration:
log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
调用接口，sql日志打印如下：
参数和sql语句不在同一行显示，需要自己代入思考，不够直观。
实现"?"的自动翻译，步骤如下：
1)编写sql语句拦截器：
import org.apache.ibatis.cache.CacheKey;
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.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Properties;
@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, CacheKey.class, BoundSql.class})})
public class SqlStatementInterceptor implements Interceptor {
public static final Logger log = LoggerFactory.getLogger("sys-sql");
@Override
public Object intercept(Invocation invocation) throws Throwable {
long startTime = System.currentTimeMillis();
try {
return invocation.proceed();
} finally {
long timeConsuming = System.currentTimeMillis() - startTime;
log.info("执行SQL:{}ms", timeConsuming);
if (timeConsuming > 999 && timeConsuming < 5000) {
log.info("执行SQL大于1s:{}ms", timeConsuming);
} else if (timeConsuming >= 5000 && timeConsuming < 10000) {
log.info("执行SQL大于5s:{}ms", timeConsuming);
} else if (timeConsuming >= 10000) {
log.info("执行SQL大于10s:{}ms", timeConsuming);
}
}
}
@Override
public Object plugin(Object target) {
return Plugin.wrap(target, this);
}
@Override
public void setProperties(Properties properties) {
}
}
2）编写MyBatisPlus日志拦截器：
import com.baomidou.mybatisplus.extension.plugins.inner.InnerInterceptor;
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.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.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.CollectionUtils;
import java.sql.SQLException;
import java.text.DateFormat;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.regex.Matcher;
public class MybatisPlusAllSqlLog implements InnerInterceptor {
public static final Logger log = LoggerFactory.getLogger("sys-sql");
@Override
public void beforeQuery(Executor executor, MappedStatement ms, Object parameter, RowBounds rowBounds, ResultHandler resultHandler, BoundSql boundSql) throws SQLException {
logInfo(boundSql, ms, parameter);
}
@Override
public void beforeUpdate(Executor executor, MappedStatement ms, Object parameter) throws SQLException {
BoundSql boundSql = ms.getBoundSql(parameter);
logInfo(boundSql, ms, parameter);
}
private static void logInfo(BoundSql boundSql, MappedStatement ms, Object parameter) {
try {
log.info("parameter = " + parameter);
// 获取到节点的id,即sql语句的id
String sqlId = ms.getId();
log.info("sqlId = " + sqlId);
// 获取节点的配置
Configuration configuration = ms.getConfiguration();
// 获取到最终的sql语句
String sql = getSql(configuration, boundSql, sqlId);
log.info("完整的sql:{}", sql);
} catch (Exception e) {
log.error("异常:{}", e.getLocalizedMessage(), e);
}
}
// 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) {
return sqlId + ":" + showSql(configuration, boundSql);
}
// 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.isEmpty(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;
}
// 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;
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;
}
}
3）编写MyBatisPlus配置：
@Configuration
public class MybatisConfiguration {
@Bean
public MybatisPlusInterceptor mybatisPlusInterceptor() {
MybatisPlusInterceptor mybatisPlusInterceptor = new MybatisPlusInterceptor();
mybatisPlusInterceptor.addInnerInterceptor(new MybatisPlusAllSqlLog());
return mybatisPlusInterceptor;
}
}
测试：
调用接口，sql日志如下所示：
