update 适配升级 springcloud 2021 springboot2.6

ruoyi-common/ruoyi-common-datasource/src/main/java/com/ruoyi/common/datasource/env/ApplicationSeataInitializer.java

@@ -0,0 +1,26 @@
+package com.ruoyi.common.datasource.env;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.env.EnvironmentPostProcessor;
+import org.springframework.core.Ordered;
+import org.springframework.core.env.ConfigurableEnvironment;
+
+/**
+ * seata 在 springboot 2.6.x 存在循环引用问题的处理
+ *
+ * @author ruoyi
+ */
+public class ApplicationSeataInitializer implements EnvironmentPostProcessor, Ordered
+{
+    @Override
+    public void postProcessEnvironment(ConfigurableEnvironment environment, SpringApplication application)
+    {
+        System.setProperty("spring.main.allow-circular-references", "true");
+    }
+
+    @Override
+    public int getOrder()
+    {
+        return Ordered.LOWEST_PRECEDENCE;
+    }
+}