From 36614de9482a32cbd2beffce7feefa4cab68af83 Mon Sep 17 00:00:00 2001
From: wuxw <928255095@qq.com>
Date: 星期二, 07 七月 2020 00:02:50 +0800
Subject: [PATCH] 优化代码
---
java110-db/src/main/java/com/java110/db/Java110MybatisInterceptor.java | 183 +++++++++++++++++++++++++--------------------
1 files changed, 101 insertions(+), 82 deletions(-)
diff --git a/java110-db/src/main/java/com/java110/db/Java110MybatisInterceptor.java b/java110-db/src/main/java/com/java110/db/Java110MybatisInterceptor.java
index 9c9a549..9714206 100644
--- a/java110-db/src/main/java/com/java110/db/Java110MybatisInterceptor.java
+++ b/java110-db/src/main/java/com/java110/db/Java110MybatisInterceptor.java
@@ -1,23 +1,23 @@
package com.java110.db;
-import org.apache.commons.collections4.CollectionUtils;
-import org.apache.ibatis.executor.statement.StatementHandler;
-import org.apache.ibatis.mapping.MappedStatement;
+import org.apache.ibatis.executor.Executor;
+import org.apache.ibatis.mapping.*;
import org.apache.ibatis.plugin.*;
import org.apache.ibatis.reflection.MetaObject;
-import org.apache.ibatis.reflection.SystemMetaObject;
+import org.apache.ibatis.session.Configuration;
+import org.apache.ibatis.type.TypeHandlerRegistry;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-import org.springframework.stereotype.Component;
-import java.beans.Statement;
-import java.lang.reflect.Proxy;
-import java.util.*;
+import java.text.DateFormat;
+import java.util.Date;
+import java.util.List;
+import java.util.Locale;
+import java.util.Properties;
@Intercepts({
- @Signature(type = StatementHandler.class, method = "update", args = {Statement.class}),
- @Signature(type = StatementHandler.class, method = "query", args = {Statement.class}),
- @Signature(type = StatementHandler.class, method = "batch", args = {Statement.class})
+ @Signature(type = Executor.class, method = "update", args = {MappedStatement.class,
+ Object.class})
})
public class Java110MybatisInterceptor implements Interceptor {
@@ -25,58 +25,68 @@
@Override
public Object intercept(Invocation invocation) throws Throwable {
- Statement statement;
- //鑾峰彇鏂规硶鍙傛暟
- Object firstArg = invocation.getArgs()[0];
- if (Proxy.isProxyClass(firstArg.getClass())) {
- statement = (Statement) SystemMetaObject.forObject(firstArg).getValue("h.statement");
- } else {
- statement = (Statement) firstArg;
+ MappedStatement mappedStatement = (MappedStatement) invocation.getArgs()[0];
+ SqlCommandType sqlCommandType = mappedStatement.getSqlCommandType();
+ Object parameter = null;
+ if (invocation.getArgs().length > 1) {
+ parameter = invocation.getArgs()[1];
}
- MetaObject stmtMetaObj = SystemMetaObject.forObject(statement);
- //鑾峰彇Statement瀵硅薄锛坰ql璇硶宸茬粡鏋勫缓瀹屾瘯锛�
- statement = (Statement) stmtMetaObj.getValue("stmt.statement");
+
+ BoundSql boundSql = mappedStatement.getBoundSql(parameter);
+ Configuration configuration = mappedStatement.getConfiguration();
//鑾峰彇sql璇彞
- String originalSql = statement.toString();
+ String sql = showSql(configuration, boundSql);
- //灏嗗師濮媠ql涓殑绌虹櫧瀛楃锛圽s鍖呮嫭鎹㈣绗︼紝鍒惰〃绗︼紝绌烘牸绗︼級鏇挎崲涓�" "
- originalSql = originalSql.replaceAll("[\\s]+", " ");
-
- //鍙幏鍙杝ql鐨剆elect/update/insert/delete寮�澶寸殑sql
- int index = indexOfSqlStart(originalSql);
- if (index > 0) {
- originalSql = originalSql.substring(index);
+ switch (sqlCommandType) {
+ case INSERT:
+ dealInsertSql(mappedStatement, parameter,sql);
+ break;
+ case UPDATE:
+ dealUpdateSql(mappedStatement, parameter,sql);
+ break;
+ case DELETE:
+ dealDeleteSql(mappedStatement, parameter,sql);
+ break;
}
+ return invocation.proceed();
+ }
- // 璁＄畻鎵ц SQL 鑰楁椂
- long start = System.currentTimeMillis();
- Object result = invocation.proceed();
- long timing = System.currentTimeMillis() - start;
+ /**
+ * 澶勭悊鍒犻櫎sql
+ *
+ * @param mappedStatement
+ * @param parameter
+ */
+ private void dealDeleteSql(MappedStatement mappedStatement, Object parameter,String sql) {
+ }
- //鑾峰彇MapperStatement瀵硅薄锛岃幏鍙栧埌sql鐨勮缁嗕俊鎭�
- Object realTarget = realTarget(invocation.getTarget());
- //鑾峰彇metaObject瀵硅薄
- MetaObject metaObject = SystemMetaObject.forObject(realTarget);
- //鑾峰彇MappedStatement瀵硅薄
- MappedStatement ms = (MappedStatement) metaObject.getValue("delegate.mappedStatement");
- StringBuilder formatSql = new StringBuilder()
- .append(" Time锛�").append(timing)
- //鑾峰彇Mapper淇℃伅鍜屾柟娉曚俊鎭�
- .append(" ms - ID锛�").append(ms.getId())
- .append("Execute SQL锛�")
- .append(originalSql);
- //鎵撳嵃sql淇℃伅
- logger.debug(formatSql.toString());
- return result;
+ /**
+ * 澶勭悊淇敼 sql
+ *
+ * @param mappedStatement
+ * @param parameter
+ */
+ private void dealUpdateSql(MappedStatement mappedStatement, Object parameter,String sql) {
+ }
+
+ /**
+ * 澶勭悊insert 璇彞
+ *
+ * @param mappedStatement
+ * @param parameter
+ */
+ private void dealInsertSql(MappedStatement mappedStatement, Object parameter,String sql) {
+ String deleteSql = "delete from ";
+
+
+
}
@Override
public Object plugin(Object target) {
- if (target instanceof StatementHandler) {
- return Plugin.wrap(target, this);
- }
- return target;
+ return Plugin.wrap(target, this);
+
}
@Override
@@ -84,39 +94,48 @@
}
- /**
- * 鑾峰彇sql璇彞寮�澶撮儴鍒�
- *
- * @param sql
- * @return
- */
- private int indexOfSqlStart(String sql) {
- String upperCaseSql = sql.toUpperCase();
- Set<Integer> set = new HashSet<>();
- set.add(upperCaseSql.indexOf("SELECT "));
- set.add(upperCaseSql.indexOf("UPDATE "));
- set.add(upperCaseSql.indexOf("INSERT "));
- set.add(upperCaseSql.indexOf("DELETE "));
- set.remove(-1);
- if (CollectionUtils.isEmpty(set)) {
- return -1;
+ public String showSql(Configuration configuration, BoundSql boundSql) {
+ Object parameterObject = boundSql.getParameterObject();
+ List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();
+ String sql = boundSql.getSql().replaceAll("[\\s]+", " ");
+ if (parameterMappings.size() > 0 && parameterObject != null) {
+ 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 obj = metaObject.getValue(propertyName);
+ sql = sql.replaceFirst("\\?", getParameterValue(obj));
+ } else if (boundSql.hasAdditionalParameter(propertyName)) {
+ Object obj = boundSql.getAdditionalParameter(propertyName);
+ sql = sql.replaceFirst("\\?", getParameterValue(obj));
+ }
+ }
+ }
}
- List<Integer> list = new ArrayList<>(set);
- list.sort(Comparator.naturalOrder());
- return list.get(0);
+ return sql;
}
- /**
- * <p>
- * 鑾峰緱鐪熸鐨勫鐞嗗璞�,鍙兘澶氬眰浠ｇ悊.
- * </p>
- */
- @SuppressWarnings("unchecked")
- public static <T> T realTarget(Object target) {
- if (Proxy.isProxyClass(target.getClass())) {
- MetaObject metaObject = SystemMetaObject.forObject(target);
- return realTarget(metaObject.getValue("h.target"));
+ private 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(obj) + "'";
+// System.out.println(value);
+ } else {
+ if (obj != null) {
+ value = obj.toString();
+ } else {
+ value = "";
+ }
+
}
- return (T) target;
+ return value;
}
}
--
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