1.测试数据 ，postman 里面message出现这样的报错
JSON parse error: Unexpected character (’}’ (code 125)): was expecting double-quote to start field name; nested exception is com.fasterxml.jackson.core.JsonParseException: Unexpected character (’}’ (code 125)): was expecting double-quote to start field name\n at [Source: (PushbackInputStream); line: 4, column: 2]
2.百度翻译（JSON分析错误：意外字符（’}’（代码125））：应以双引号开头的字段名；嵌套异常为com.fasterxml.jackson.core.json parse exception:意外字符（’}’（代码125））：应以双引号开头的字段名位于[source:（pushbackinputstream）；line：4，列：2]）
- 检查了发现多了一个逗号。
- 去掉测试成功，细节很重要。