方式:
js前端请求:
function getOcrInfo(imageData){ $.ajax({ url: 'http://localhost:8080/LSWS/ws/ocr/getWebImageRecognitionJsonStringByBase64Image', type: 'post', dataType:'json', //async:false, data: { "imageData" : imageData }, success:function(data){ if(data.flag==0){ var name=decodeURIComponent(data.name); var position=decodeURIComponent(data.position); }else{ FR.Msg.alert("错误提示","获取识别结果失败,请重试!"); } }, error:function(data){ FR.Msg.alert("错误提示","获取识别结果失败,请重试!"); } });
服务器后端:
@RequestMapping(value="/getWebImageRecognitionJsonStringByBase64Image",method = RequestMethod.POST) @ResponseBody public String getWebImageRecognitionJsonStringByBase64Image(HttpServletRequest request,HttpServletResponse response,String imageData) { String result = ""; //System.out.println(imageData); try{ WebImageRecognition gr = new WebImageRecognition(); result = gr.getWebImageRecognitionJsonObjectByBase64Image(imageData); response.addHeader("Access-Control-Allow-Origin","*"); //用于ajax post跨域(*,最好指定确定的http等协议+ip+端口号) response.setCharacterEncoding("utf-8"); //response.getWriter().write(result); //response.getWriter().close(); }catch(Exception e){ e.printStackTrace(); logger.error("getGeneralRecognition:"+e); result = "{"flag":"1","errorMessage":"server change error at OcrController!"}"; } return result; }
注:跨域支持还可以使用CORS ,请参见:http://www.ruanyifeng.com/blog/2016/04/cors.html (编辑:李大同)
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