[待解决]报错:JSON parse error: Unexpected character

{"code":"9999","message":"JSON parse error: Unexpected character ('%' (code 37)): expected a valid value (number, String, array, object, 'true', 'false' or 'null'); nested exception is com.fasterxml.jackson.core.JsonParseException: Unexpected character ('%' (code 37)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')\n at [Source: java.io.PushbackInputStream@44531d5b; line: 1, column: 2]","data":null,"success":false}