错误信息

converter.HttpMessageNotReadableException: JSON parse error: Unrecognized token 'token': was expecting 'null', 'true', 'false' or NaN; nested exception is com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'token': was expecting 'null', 'true', 'false' or NaN

后端接收方法-参数接受

    @PostMapping("/doLogin")
    public String login(@RequestBody Map map, HttpSession session){
        try {
            String account = map.get("account")==null?"":map.get("account").toString();
            String password = map.get("password")==null?"":map.get("password").toString();

请求方法

<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script>
    $(function(){
        $.ajax({
          //  url:"http://172.17.172.45:8089/account/admin/consumeRecord/getlist",
             url:"http://localhost:8089/account/admin/consumeRecord/getlist", 
            //url:"http://172.17.172.45:8089/account/doLogin",
            data:{account: "pan", password: "123456"},
            dataType: "json", // 表示返回类型
            type:"POST",   // 请求方式
            crossDomain:true,  //是否跨域  可后端设置
            contentType:"application/json;charset=UTF-8", 
            //contentType: "application/x-www-form-urlencoded",
            success:function(data){
                console.log(data);
            }
        });
    });
</script>

错误信息是400，如下所示：

参数是用等号连接的。
加入JSON.stringify()对传参进行解析;代码如下。

<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script>
    $(function(){
        $.ajax({
          //  url:"http://172.17.172.45:8089/account/admin/consumeRecord/getlist",
            // url:"http://172.17.172.45:8089/account/admin/consumeRecord/getlist", ok
            url:"http://localhost:8089/account/doLogin",
            data:JSON.stringify({account: "pan", password: "123456"}),
            dataType: "json", // 表示返回类型
            type:"POST",   // 请求方式
            crossDomain:true,  //是否跨域  可后端设置
            contentType:"application/json;charset=UTF-8", 
            //contentType: "application/x-www-form-urlencoded",
            success:function(data){
                console.log(data);
            }
        });
    });
</script>

后端可以正常接收了。