您好,我这边测试正常,您看下是不是您发请求的时候参数哪里是不是发送错误,我用的resquest url是http://support.supermap.com.cn:8090/iserver/services/data-jingjin/rest/data/coordtransfer.json
form data:
{"sourcePoints":[{"x":113.98533886568, "y":4.39179640504}, {"x":112.98533886568, "y":3.39179640504}], "sourceEpsgCode":4326, "targetEpsgCode":3857}