問題：前臺vue使用fetch.js傳送post請求後，後臺 request.getParameter()無法獲取到引數值

思路：

1. Status Code: 200 OK請求傳送成功
2. 檢視瀏覽器request請求中有引數檢視瀏覽器request請求中有引數
   
3. 後臺controller中使用 request.getParameter(“account”)，引數名稱一致
4. 仔細對比以前傳送的post請求發現request引數傳遞格式不一樣
   
5. 查閱相關資料，原因為fetch.js中標頭檔案Content-type這個Header為application/x-www-form-urlencoded導致request請求中的form data變成request payload.

處理辦法：後臺controller中使用流接受資料後，再進行查詢操作既可。

1. vue程式碼

    /**
     * 獲取行業大類
     */
    export const hangyebrief = industryId => fetch('/console/good/industry/findIndustry', {
      industryId: 2
    }, 'POST');
   

2. controller程式碼

    @RequestMapping("findBrandDetailByNum")
    @ResponseBody
    public AjaxRes findBrandDetailByNum( HttpServletRequest request){
        String jsonObjectData = RequestUtil.getJsonObjectData(request);
        String industryId = RequestUtil.getObjectValue(jsonObjectData,"industryId ");
    
   

3. RequestUtil程式碼

    package com.jy.util;
    
    import javax.servlet.http.HttpServletRequest;
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.util.Map;
    
    public class RequestUtil {
    	public static String getJsonObjectData(HttpServletRequest request) {
    		StringBuilder sb = new StringBuilder();
    		try (BufferedReader reader = request.getReader();) {
    			char[] buff = new char[1024];
    			int len;
    			while ((len = reader.read(buff)) != -1) {
    				sb.append(buff, 0, len);
    			}
    		} catch (IOException e) {
    			e.printStackTrace();
    		}
    		String jsonObjectData = sb.toString();
    		return jsonObjectData;
    	}
    	public static String getObjectValue(String jsonObjectData,String key){
    		net.sf.json.JSONObject jsonObject = net.sf.json.JSONObject.fromObject(jsonObjectData);
    		Map<String, Object> mapJson = net.sf.json.JSONObject.fromObject(jsonObject);
    		String value ="";
    		for(Map.Entry<String,Object> entry : mapJson.entrySet()){
    			if(entry.getKey().equals(key)){
    				Object strval1 = entry.getValue();
    				System.out.println(key+":"+entry.getValue()+"\n");
    				value = entry.getValue()+"";
    			}
    		}
    		return value;
    	}
    }