關於request.getInputStream()接參流程

spring接到瀏覽器傳來的post請求 所傳進來的參數都在request里

 @RequestMapping(value = PROXY_URL, method = RequestMethod.POST, produces = PRODUCES)
    public Object proxy(final HttpServletRequest request, final HttpServletResponse response) {
　　　　　　String json = "";
                json = new String(readInputStream(request.getInputStream()), "UTF-8");  

    }

此時debug查看request.getInputStream()的值是全部請求信息 但是並非我們想要是參數

 

 所以我們要對結果解析

readInputSream()是解析方法

    public static byte[] readInputStream(InputStream inStream) throws Exception {
        ByteArrayOutputStream outSteam = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        boolean var3 = false;

        int len;
        while((len = inStream.read(buffer)) != -1) {
            outSteam.write(buffer, 0, len);
        }

        outSteam.close();
        inStream.close();
        return outSteam.toByteArray();
    }

inStream.read(buffer)讀取數據賦值給buffer

 

outSteam的結果就是我們想要的數據了

注意 這里的json格式的數據是前端定義好傳進來的 和后台對io流解析無關