修改文件: _posts/2017-07-14-muti-tenant.md

Author: lanyuanxiaoyao

_posts/2017-07-14-muti-tenant.md

@@ -221,10 +221,38 @@ public class MultiTenantConnectionProviderImpl extends AbstractDataSourceBasedMu
     // 提供了tenantId的话就根据ID来返回数据源
     @Override
     protected DataSource selectDataSource(String tenantIdentifier) {
-        System.out.println("selectDataSource:" + tenantIdentifier);
         return TenantDataSourceProvider.getTenantDataSource(tenantIdentifier);
     }
 }
+```
+#### MultiTenantIdentifierResolver
+```java
+package cloud.tenant;
+
+import cloud.config.ConstId;
+import org.hibernate.context.spi.CurrentTenantIdentifierResolver;
+
+/**
+ * 这个类是由Hibernate提供的用于识别tenantId的类，当每次执行sql语句被拦截就会调用这个类中的方法来获取tenantId
+ * @author lanyuanxiaoyao
+ * @version 1.0
+ */
+public class MultiTenantIdentifierResolver implements CurrentTenantIdentifierResolver{
+
+    // 获取tenantId的逻辑在这个方法里面写
+    @Override
+    public String resolveCurrentTenantIdentifier() {
+        if (!"".equals(ConstId.Id)){
+            return ConstId.Id;
+        }
+        return "Default";
+    }
+
+    @Override
+    public boolean validateExistingCurrentSessions() {
+        return true;
+    }
+}
 ```
 
   [1]: https://www.github.com/lanyuanxiaoyao/GitGallery/raw/master/2017/7/14/Spring%20Boot%EF%BC%88%E4%B8%89%EF%BC%89%20Spring%20boot%20+%20Hibernate%20%E5%A4%9A%E7%A7%9F%E6%88%B7%E7%9A%84%E4%BD%BF%E7%94%A8/Ashampoo_Snap_2017%E5%B9%B47%E6%9C%8814%E6%97%A5_12h27m50s_001_.png "目录结构"