Update README.md

Author: TommyLemon

README.md

@@ -221,7 +221,7 @@ DELETE：删除数据，非明文 | base_url/delete/ | {TableName:{"id":id}, "ta
  "key()":"函数表达式"， 函数表达式为 function(Type0:value0,Type1:value1...) | 远程调用函数 |  ["isPraised()":"contains(Collection:praiseUserIdList,userId)"](http://139.196.140.118:8080/get/{"Moment":{"id":301,"isPraised()":"contains(Collection:praiseUserIdList,userId)"}})，请求完成后会调用 boolean contains(Collection collection, Object object) 函数，然后变为 "isPraised":true 这种（假设点赞用户id列表包含了userId，即这个User点了赞）。函数参数类型为Object时可用 value 替代 Object:value。
  "key@":"依赖路径"，依赖路径为用/分隔的字符串 | 依赖引用 | ["userId@":"/User/id"](http://139.196.140.118:8080/get/%7B%22User%22%3A%7B%22id%22%3A38710%7D%2C%22Moment%22%3A%7B%22userId%40%22%3A%22%252FUser%252Fid%22%7D%7D)，userId依赖引用同级User内的id值，假设id=1，则请求完成后会变成 "userId":1
  "key$":"SQL搜索表达式"，任意SQL搜索表达式字符串，如 %key%, %k%e%y% 等 | 模糊搜索 | "name$":"%m%"，搜索包含m的名字。一般用于查询一个数组。请求 [{"[]":{"User":{"name$":"%m%"}}}](http://139.196.140.118:8080/get/%7B%22%5B%5D%22%3A%7B%22User%22%3A%7B%22name%24%22%3A%22%2525m%2525%22%7D%2C%22count%22%3A3%2C%22page%22%3A0%7D%7D) 会返回name包含"m"的User数组。
- "key+":key指定类型的Object，且类型为Number,String,JSONArray中的一种。如 1,"apijson",["url0","url1"] 等。只用于PUT请求 | 增加/扩展，与"key-"相反 | "praiseUserIdList+":[1]，添加一个点赞用户id，即该用户点了赞
+ "key+":key指定类型的Object，且类型为Number,String,JSONArray中的一种。如 1,"apijson",["url0","url1"] 等。只用于PUT请求 | 增加/扩展 | "praiseUserIdList+":[1]，添加一个点赞用户id，即该用户点了赞
  "key-":key指定类型的Object，同"key+" | 减少/去除，与"key+"相反 | "balance-":100.00，余额减少100.00，即花费了100元
  "@key":key指定类型的Object | @key为JSONObject中的关键字，作用各不相同，但都不作为查询匹配条件 | ① 只查询id,sex,name这几列并且请求结果也按照这个顺序：<br />["@columns":"id,sex,name"](http://139.196.140.118:8080/get/{"User":{"@columns":"id,sex,name","id":38710}})<br />返回<br />{<br /> &nbsp; "id":1,<br /> &nbsp; "sex":0,<br /> &nbsp; "name":"Lemon"<br />}<br /> ② 从pictureList获取第0张图片：<br />[{<br /> &nbsp; "pictureList":["url0","url1"],<br /> &nbsp; "@position":0, //这里@position为自定义关键词<br /> &nbsp; "firstPicture()":"get(Collection:pictureList,int:@position)"<br />}](http://139.196.140.118:8080/get/{"User":{"id":38710,"@position":0,"firstPicture()":"get(Collection:pictureList,int:@position)"}})<br />返回<br />{<br /> &nbsp; "pictureList":["url0","url1"],<br /> &nbsp; "@position":0,<br /> &nbsp; "firstPicture":"url0"<br />}<br /> ...