修改新增方法名称.

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

@@ -440,7 +440,7 @@ public interface BaseMapper<T> extends Mapper<T> {
      * @param entity 实体对象 (不能为空)
      * @since 3.5.7
      */
-    default boolean saveOrUpdate(T entity) {
+    default boolean insertOrUpdate(T entity) {
         Class<?> entityClass = GenericTypeUtils.resolveTypeArguments(getClass(), BaseMapper.class)[0];
         TableInfo tableInfo = TableInfoHelper.getTableInfo(entityClass);
         Assert.notNull(tableInfo, "error: can not execute. because can not find cache of TableInfo for entity!");

mybatis-plus-extension/src/main/java/com/baomidou/mybatisplus/extension/service/impl/ServiceImpl.java

@@ -201,7 +201,7 @@ public abstract class ServiceImpl<M extends BaseMapper<T>, T> implements IServic
      */
     @Override
     public boolean saveOrUpdate(T entity) {
-        return getBaseMapper().saveOrUpdate(entity);
+        return getBaseMapper().insertOrUpdate(entity);
     }
 
     @Transactional(rollbackFor = Exception.class)

mybatis-plus-extension/src/main/java/com/baomidou/mybatisplus/extension/toolkit/Db.java

@@ -227,7 +227,7 @@ public class Db {
         if (Objects.isNull(entity)) {
             return false;
         }
-        return SqlHelper.execute(getEntityClass(entity), baseMapper -> baseMapper.saveOrUpdate(entity));
+        return SqlHelper.execute(getEntityClass(entity), baseMapper -> baseMapper.insertOrUpdate(entity));
     }
 
     /**

mybatis-plus/src/test/java/com/baomidou/mybatisplus/test/h2/H2UserMapperTest.java

@@ -538,11 +538,11 @@ class H2UserMapperTest extends BaseTest {
     @Test
     void testSaveOrUpdate() {
         var h2User = new H2User();
-        userMapper.saveOrUpdate(h2User);
+        userMapper.insertOrUpdate(h2User);
         Assertions.assertNotNull(h2User.getTestId());
         Assertions.assertNull(h2User.getLastUpdatedDt());
         h2User.setName("test");
-        userMapper.saveOrUpdate(h2User);
+        userMapper.insertOrUpdate(h2User);
         Assertions.assertNotNull(h2User.getLastUpdatedDt());
     }