java - 无法在 Groovy/Java 中编写 JSON 字符串

Question

所以我尝试将以下 JSON 编写为 Java 字符串，但收到一个我不明白的错误:

    String simpleAPI_MessageInJSON = "{                                          " +
                                 "       \"action\": \"add\",                    " +
                                 "       \"destinations\": {                     " +
                                 "           \"cache\": 1,                       " +
                                 "           \"batches\": 1                      " +
                                 "        },                                     " +
                                 "       \"payload\": {                          " +
                                 "           \"object_type\": \"profile\",       " +
                                 "           \"object_id\": 366334,              " +
                                 "        }                                      " +
                                 "    }                                          ";

错误:

com.fasterxml.jackson.core.JsonParseException: Unexpected character ('}' (code 125)): was expecting double-quote to start field name

Answer 1

你多了一个逗号:

"           \"object_id\": 366334,              " +

应该是:

"           \"object_id\": 366334              " +
//                              /\ Extra comma was there.

错误消息显示:

com.fasterxml.jackson.core.JsonParseException: Unexpected character ('}' (code 125)): was expecting double-quote to start field name

这不是很清楚，但我们可以看出这是某种语法错误，并且它有一个行号。通过查看行号，您可以发现语法错误。