相關 lib 版本
springVersion = "4.3.6.RELEASE"
mybatisVersion = "3.4.1"
mybatisSpringVersion = "1.3.0"
postgresqlVersion = "9.4.1212"
[JAVA Code]
package test.interceptor;
import java.text.DateFormat;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.Properties;
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.slf4j.Logger;
import org.slf4j.LoggerFactory;
@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})})
public class MybatisInterceptor implements Interceptor {
private static Logger log = LoggerFactory.getLogger(MybatisInterceptor.class);
private Properties properties;
@Override
public Object intercept(Invocation invocation) throws Throwable {
MappedStatement mappedStatement = (MappedStatement) invocation.getArgs()[0];
Object parameter = null;
if (invocation.getArgs().length > 1) {
parameter = invocation.getArgs()[1];
}
String sqlId = mappedStatement.getId();
BoundSql boundSql = mappedStatement.getBoundSql(parameter);
Configuration configuration = mappedStatement.getConfiguration();
Object returnValue;
long start = System.currentTimeMillis();
returnValue = invocation.proceed();
long end = System.currentTimeMillis();
long time = (end - start);
if (time > 1) {
String sql = getSql(configuration, boundSql, sqlId, time);
log.info("呼叫的 java 方法為: \n" + sql.split("\\|")[0]);
log.info("查詢 sql 語法為: \n" + sql.split("\\|")[1] + "\n" + "sql 語法執行的時間:" + time + "\n\n");
}
return returnValue;
}
private static String getSql(Configuration configuration, BoundSql boundSql, String sqlId, long time) {
String sql = showSql(configuration, boundSql);
StringBuilder str = new StringBuilder(1000);
str.append(sqlId);
str.append("|");
str.append(sql);
str.append("|");
str.append(time);
str.append("ms");
return str.toString();
}
private static String showSql(Configuration configuration, BoundSql boundSql) {
Object parameterObject = boundSql.getParameterObject();
List
String sql = boundSql.getSql().replaceAll("[\\s]+", " ");
if (parameterMappings.size() > 0 && null != parameterObject) {
TypeHandlerRegistry typeHandlerRegistry = configuration.getTypeHandlerRegistry();
if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) {
sql = sql.replaceFirst("\\?", getParameterValue(parameterObject));
} else {
MetaObject metaObject = configuration.newMetaObject(parameterObject);
for (ParameterMapping parameterMapping : parameterMappings) {
String propertyName = parameterMapping.getProperty();
if (metaObject.hasGetter(propertyName)) {
Object object = metaObject.getValue(propertyName);
sql = sql.replaceFirst("\\?", getParameterValue(object));
} else if (boundSql.hasAdditionalParameter(propertyName)) {
Object object = boundSql.getAdditionalParameter(propertyName);
sql = sql.replaceFirst("\\?", getParameterValue(object));
}
}
}
}
return sql;
}
private static String getParameterValue(Object object) {
String value;
if (object instanceof String) {
value = "'" + object.toString() + "'";
} else if (object instanceof Date) {
DateFormat formatter =
DateFormat.getDateTimeInstance(DateFormat.DEFAULT, DateFormat.DEFAULT, Locale.TAIWAN);
value = "'" + formatter.format(object) + "'";
} else {
if (null != object) {
value = object.toString();
} else {
value = "";
}
}
return value;
}
@Override
public Object plugin(Object target) {
return Plugin.wrap(target, this);
}
@Override
public void setProperties(Properties properties) {
this.properties = properties;
}
}
[Mybatis Config XML]
於
相關連結:
How to intercept and change sql query dynamically in mybatis
沒有留言 :
張貼留言