分页问题临时解决方案.

mybatis-plus-core/src/main/java/com/baomidou/mybatisplus/core/MybatisConfiguration.java

@@ -16,17 +16,24 @@
 package com.baomidou.mybatisplus.core;
 
 import com.baomidou.mybatisplus.core.config.GlobalConfig;
+import com.baomidou.mybatisplus.core.executor.MybatisSimpleExecutor;
 import com.baomidou.mybatisplus.core.toolkit.GlobalConfigUtils;
 import lombok.Getter;
 import lombok.Setter;
 import org.apache.ibatis.binding.MapperRegistry;
+import org.apache.ibatis.executor.BatchExecutor;
+import org.apache.ibatis.executor.CachingExecutor;
+import org.apache.ibatis.executor.Executor;
+import org.apache.ibatis.executor.ReuseExecutor;
 import org.apache.ibatis.logging.Log;
 import org.apache.ibatis.logging.LogFactory;
 import org.apache.ibatis.mapping.Environment;
 import org.apache.ibatis.mapping.MappedStatement;
 import org.apache.ibatis.scripting.LanguageDriver;
 import org.apache.ibatis.session.Configuration;
+import org.apache.ibatis.session.ExecutorType;
 import org.apache.ibatis.session.SqlSession;
+import org.apache.ibatis.transaction.Transaction;
 
 /**
  * replace default Configuration class
@@ -142,4 +149,24 @@ public class MybatisConfiguration extends Configuration {
         }
         getLanguageRegistry().setDefaultDriverClass(driver);
     }
+    
+    @Override
+    public Executor newExecutor(Transaction transaction, ExecutorType executorType) {
+        executorType = executorType == null ? defaultExecutorType : executorType;
+        executorType = executorType == null ? ExecutorType.SIMPLE : executorType;
+        Executor executor;
+        if (ExecutorType.BATCH == executorType) {
+            executor = new BatchExecutor(this, transaction);
+        } else if (ExecutorType.REUSE == executorType) {
+            executor = new ReuseExecutor(this, transaction);
+        } else {
+            //todo 这里我替换了执行器
+            executor = new MybatisSimpleExecutor(this, transaction);
+        }
+        if (cacheEnabled) {
+            executor = new CachingExecutor(executor);
+        }
+        executor = (Executor) interceptorChain.pluginAll(executor);
+        return executor;
+    }
 }

mybatis-plus-core/src/main/java/com/baomidou/mybatisplus/core/executor/MybatisSimpleExecutor.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2011-2019, hubin (jobob@qq.com).
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ * <p>
+ * https://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package com.baomidou.mybatisplus.core.executor;
+
+import org.apache.ibatis.executor.SimpleExecutor;
+import org.apache.ibatis.executor.statement.StatementHandler;
+import org.apache.ibatis.mapping.BoundSql;
+import org.apache.ibatis.mapping.MappedStatement;
+import org.apache.ibatis.session.Configuration;
+import org.apache.ibatis.session.ResultHandler;
+import org.apache.ibatis.session.RowBounds;
+import org.apache.ibatis.transaction.Transaction;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * 重写执行器
+ *
+ * @author nieqiurong 2019/4/14.
+ */
+public class MybatisSimpleExecutor extends SimpleExecutor {
+    
+    public MybatisSimpleExecutor(Configuration configuration, Transaction transaction) {
+        super(configuration, transaction);
+    }
+    
+    @Override
+    public <E> List<E> doQuery(MappedStatement ms, Object parameter, RowBounds rowBounds, ResultHandler resultHandler, BoundSql boundSql) throws SQLException {
+        Statement stmt = null;
+        try {
+            Configuration configuration = ms.getConfiguration();
+            StatementHandler handler = configuration.newStatementHandler(wrapper, ms, parameter, rowBounds, resultHandler, boundSql);
+            Connection connection = getConnection(ms.getStatementLog());
+            stmt = handler.prepare(connection, transaction.getTimeout());
+            if (stmt == null) {
+                return Collections.emptyList();
+            }
+            handler.parameterize(stmt);
+            return handler.query(stmt, resultHandler);
+        } finally {
+            closeStatement(stmt);
+        }
+    }
+    
+}

mybatis-plus-extension/src/main/java/com/baomidou/mybatisplus/extension/plugins/PaginationInterceptor.java

@@ -176,7 +176,7 @@ public class PaginationInterceptor extends AbstractSqlParserHandler implements I
             orderBy = sqlInfo.isOrderBy();
             this.queryTotal(overflow, sqlInfo.getSql(), mappedStatement, boundSql, page, connection);
             if (page.getTotal() <= 0) {
-                return invocation.proceed();
+                return null;
             }
         }