mybatis plus 乐观锁测试

src/main/java/com/api/config/MybatisPlusConfig.java

@@ -10,6 +10,7 @@ package com.api.config;
 
 import com.baomidou.mybatisplus.core.injector.ISqlInjector;
 import com.baomidou.mybatisplus.extension.injector.LogicSqlInjector;
+import com.baomidou.mybatisplus.extension.plugins.OptimisticLockerInterceptor;
 import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -30,6 +31,11 @@ public class MybatisPlusConfig {
         return new PaginationInterceptor();
     }
 
+    @Bean
+    public OptimisticLockerInterceptor getOpt() {
+        return new OptimisticLockerInterceptor();
+    }
+
     @Bean
     public ISqlInjector sqlInjector() {
         return new LogicSqlInjector();

src/main/java/com/api/dao/ProductMapper.java

@@ -0,0 +1,9 @@
+package com.api.dao;
+
+import com.api.entity.ProductEntity;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface ProductMapper extends BaseMapper<ProductEntity> {
+}

src/main/java/com/api/entity/ProductEntity.java

@@ -0,0 +1,19 @@
+package com.api.entity;
+
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import com.baomidou.mybatisplus.annotation.Version;
+import lombok.Data;
+
+@Data
+@TableName("t_product")
+public class ProductEntity {
+    @TableId
+    private Integer id;
+
+    private String productName;
+    private Integer productPrice;
+    @Version
+    private Integer version;
+
+}

src/main/test/java/com/api/MybatisPlusTest2.java

@@ -0,0 +1,27 @@
+package com.api;
+
+import com.api.dao.ProductMapper;
+import com.api.entity.ProductEntity;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class MybatisPlusTest2 {
+    @Autowired
+    private ProductMapper productMapper;
+    // 测试乐观锁
+    @Test
+    public void testOpt() {
+        ProductEntity productZhang = productMapper.selectById(0);
+        ProductEntity productWang = productMapper.selectById(0);
+        productZhang.setProductPrice(productZhang.getProductPrice()+1);
+        int updateZhang = productMapper.updateById(productZhang);
+        productWang.setProductPrice(productWang.getProductPrice()-11);
+        int updateWang = productMapper.updateById(productWang);
+
+    }
+}