数据库配置如下

         jdbc:mysql://rxxxxxxxxxxxxx.mysql.rds.aliyuncs.com:3306/wfchat?useSSL=false&serverTimezone=GMT%2B8&allowPublicKeyRetrieval=true&useUnicode=true&characterEncoding=utf8  启动信息如下 {Heap before GC invocations=3 (full 0):  garbage-first heap   total 59392K, used 34321K [0x00000000c7a00000, 0x00000000c7b001d0, 0x0000000100000000)   region size 1024K, 34 young (34816K), 1 survivors (1024K)  Metaspace       used 10079K, capacity 10208K, committed 10496K, reserved 1058816K   class space    used 1188K, capacity 1230K, committed 1280K, reserved 1048576K  [GC pause (G1 Evacuation Pause) (young)  Desired survivor size 2621440 bytes, new threshold 15 (max 15)  - age   1:     107440 bytes,     107440 total  - age   3:     396720 bytes,     504160 total  , 0.0053456 secs]    [Parallel Time: 4.8 ms, GC Workers: 2]       [GC Worker Start (ms): Min: 370.2, Avg: 371.4, Max: 372.6, Diff: 2.5]       [Ext Root Scanning (ms): Min: 0.0, Avg: 0.7, Max: 1.4, Diff: 1.4, Sum: 1.4]       [Update RS (ms): Min: 0.0, Avg: 0.0, Max: 0.0, Diff: 0.0, Sum: 0.0]          [Processed Buffers: Min: 0, Avg: 0.0, Max: 0, Diff: 0, Sum: 0]       [Scan RS (ms): Min: 0.0, Avg: 0.0, Max: 0.0, Diff: 0.0, Sum: 0.0]       [Code Root Scanning (ms): Min: 0.0, Avg: 0.1, Max: 0.3, Diff: 0.3, Sum: 0.3]       [Object Copy (ms): Min: 2.3, Avg: 2.7, Max: 3.1, Diff: 0.8, Sum: 5.3]       [Termination (ms): Min: 0.0, Avg: 0.0, Max: 0.0, Diff: 0.0, Sum: 0.0]          [Termination Attempts: Min: 1, Avg: 1.0, Max: 1, Diff: 0, Sum: 2]       [GC Worker Other (ms): Min: 0.0, Avg: 0.0, Max: 0.0, Diff: 0.0, Sum: 0.0]       [GC Worker Total (ms): Min: 2.3, Avg: 3.5, Max: 4.8, Diff: 2.5, Sum: 7.0]       [GC Worker End (ms): Min: 374.9, Avg: 374.9, Max: 374.9, Diff: 0.0]    [Code Root Fixup: 0.0 ms]    [Code Root Purge: 0.0 ms]    [Clear CT: 0.1 ms]    [Other: 0.5 ms]       [Choose CSet: 0.0 ms]       [Ref Proc: 0.4 ms]       [Ref Enq: 0.0 ms]       [Redirty Cards: 0.0 ms]       [Humongous Register: 0.0 ms]       [Humongous Reclaim: 0.0 ms]       [Free CSet: 0.0 ms]    [Eden: 33.0M(33.0M)->0.0B(30.0M) Survivors: 1024.0K->4096.0K Heap: 33.5M(58.0M)->3994.6K(58.0M)]  Heap after GC invocations=4 (full 0):  garbage-first heap   total 59392K, used 3994K [0x00000000c7a00000, 0x00000000c7b001d0, 0x0000000100000000)   region size 1024K, 4 young (4096K), 4 survivors (4096K)  Metaspace       used 10079K, capacity 10208K, committed 10496K, reserved 1058816K   class space    used 1188K, capacity 1230K, committed 1280K, reserved 1048576K  }  [Times: user=0.01 sys=0.00, real=0.00 secs]  Total time for which application threads were stopped: 0.0055510 seconds, Stopping threads took: 0.0000192 seconds  Total time for which application threads were stopped: 0.0000687 seconds, Stopping threads took: 0.0000345 seconds  Total time for which application threads were stopped: 0.0001395 seconds, Stopping threads took: 0.0000290 seconds  Total time for which application threads were stopped: 0.0000369 seconds, Stopping threads took: 0.0000176 seconds  然后就一直卡着不动了，正常情况是会有success信息出来的