在golang中，什么是写JSON和MySQL查询字符串的好格式？

It is really hard to read an extremely long string of JSON or DB query in golang source code.

JSON Example:

"{\"task\":\"send_sms\",\"t_id\":988110,\"req\":{\"node\":1,\"msg_id\":987654321,\"m_num\":\"+61433092888\",\"p_num\":\"Private\",\"msg\":\"Hello world.\"}}      "

DB Query Example:

dbQuery = fmt.Sprintf("INSERT INTO `ms_message` (`task_id`, `panel_phone_num` ,`user_mobile_num`,`message_content`,`receiver_node_id`,`modem_index`,`generate_datetime` ) SELECT * FROM (SELECT %d, \"%s\", \"%s\", \"%s\", %d,%d,\"%s\") AS tmp WHERE NOT EXISTS ( SELECT * FROM `ms_message` WHERE `receiver_node_id` = %d AND `task_id` = %d ) LIMIT 1", taskId, panelNumber, mobileNumber, messageContent, nodeId, modemId, dateTime, nodeId, taskId)

What way is nice to make above strings looks reader friendly?

You can use backticks to write a multiline string literal, like so:

json := `
{
    "hello": "world",
    "foo": "bar"
}`

https://play.golang.org/p/bU5q6tx8Jx

The backticks in your SQL example might be problematic, though...