DEC-15199 同样数据创建的datasource，首次init报错后，第二次init不会报错

fine-druid/src/main/java/com/fr/third/alibaba/druid/pool/DruidDataSource.java

@@ -168,6 +168,8 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
 
     private volatile boolean keepAlive = false;
 
+    private SQLException initException = null;
+
     public DruidDataSource() {
         this(false);
     }
@@ -643,6 +645,11 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
     }
 
     public void init() throws SQLException {
+        if (initException != null) {
+            LOG.error("{dataSource-" + this.getID() + "} init error", initException);
+            throw initException;
+        }
+
         if (inited) {
             return;
         }
@@ -811,6 +818,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
             }
         } catch (SQLException e) {
             LOG.error("{dataSource-" + this.getID() + "} init error", e);
+            initException = e;
             throw e;
         } catch (InterruptedException e) {
             throw new SQLException(e.getMessage(), e);

fine-druid/src/test/java/com/fr/third/alibaba/druid/pool/DruidDataSourceTest.java

@@ -0,0 +1,40 @@
+package com.fr.third.alibaba.druid.pool;
+
+import com.fr.invoke.Reflect;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * @author lidongy
+ * @version 10.0
+ * Created by lidongy on 2020/9/27
+ */
+public class DruidDataSourceTest {
+
+    @Test
+    public void testInitException() {
+        DruidDataSource dataSource = new DruidDataSource();
+        Reflect.on(dataSource).set("maxEvictableIdleTimeMillis", 1);
+        Reflect.on(dataSource).set("minEvictableIdleTimeMillis", 2);
+
+
+        boolean flag1 = false;
+        boolean flag2 = false;
+
+        try {
+            dataSource.init();
+        } catch (Exception e) {
+            flag1 = true;
+        }
+
+        //按照以前错误的逻辑，第二次init时就不会报错
+        try {
+            dataSource.init();
+        } catch (Exception e) {
+            flag2 = true;
+        }
+
+        Assert.assertTrue(flag1);
+        Assert.assertTrue(flag2);
+    }
+}