Unsupported Media Type

使用xutils3进行网络请求，post需要传参报错： Unsupported Media Type
经核实，之前是这样传参，报错

2022-04-20 11:56:05.081 27544-27544/com.ruhai.yibei E/wy: onCreate params: https://test.winkong.pro/platformConsult/appConsult/getTraderId?<key=a0a37c9795114beb830aa5e1afb77eb>
2022-04-20 11:56:05.145 27544-27544/com.ruhai.yibei E/wy: 102 result: Unsupported Media Type

        RequestParams params = new RequestParams(Constant.getTraderId);
        params.addHeader("Authorization", Constant.authorization);
        params.addHeader("language", "zh_CN");
        params.addBodyParameter("key","a0a37c9795114beb830aa5e1afb77eb");
//        params.addHeader("Content-Type", "application/json");
//        params.setMultipart(true);
//        params.setAsJsonContent(true);
    
        x.http().post(params, new Callback.CommonCallback<String>() {
    
    
            @Override
            public void onSuccess(String result) {
    
    
                Log.e("wy", "145getUseSig:    " + result);
                TraderIdBean userSignBean = JSON.parseObject(result, TraderIdBean.class);
                Log.e("wy", "147:    " + userSignBean.getData().getTraderId());
                if (userSignBean.getCode() == "00000000") {
    
    
                

                }

            }

            @Override
            public void onError(Throwable ex, boolean isOnCallback) {
    
    
                Log.e("wy", "102 result: " + ex.getMessage());
            }

            @Override
            public void onCancelled(CancelledException cex) {
    
    
                Toast.makeText(x.app(), "cancelled", Toast.LENGTH_LONG).show();
            }

            @Override
            public void onFinished() {
    
    

            }
        });

现在是这样传参，成功;非得搞一个Bean实体类才行，真是奇怪

2022-04-20 11:55:16.594 25587-25587/com.ruhai.yibei E/wy: onCreate params: https://test.winkong.pro/platformConsult/appConsult/getTraderId?<={}>
2022-04-20 11:55:16.670 25587-25587/com.ruhai.yibei E/wy: 145getUseSig:    {
    
    "msg":"success","code":"00000000","data":{
    
    "traderId":100,"key":"d9db4d26504b4fb5b5cc2fb2fc272371"}}

        KeyBean keyBean = new KeyBean();
        String keyBeanString = JSON.toJSONString(keyBean);
        RequestParams params = new RequestParams(Constant.getTraderId);
        params.addHeader("Authorization", Constant.authorization);
        params.addHeader("language", "zh_CN");
//       params.addBodyParameter("key","a0a37c9795114beb830aa5e1afb77eb");
//        params.addHeader("Content-Type", "application/json");
//        params.setMultipart(true);
//        params.setAsJsonContent(true);
        params.addBodyParameter("", keyBeanString);
        x.http().post(params, new Callback.CommonCallback<String>() {
    
    
            @Override
            public void onSuccess(String result) {
    
    
                Log.e("wy", "145getUseSig:    " + result);
                TraderIdBean userSignBean = JSON.parseObject(result, TraderIdBean.class);
                Log.e("wy", "147:    " + userSignBean.getData().getTraderId());
                if (userSignBean.getCode() == "00000000") {
    
    
                

                }

            }

            @Override
            public void onError(Throwable ex, boolean isOnCallback) {
    
    
                Log.e("wy", "102 result: " + ex.getMessage());
            }

            @Override
            public void onCancelled(CancelledException cex) {
    
    
                Toast.makeText(x.app(), "cancelled", Toast.LENGTH_LONG).show();
            }

            @Override
            public void onFinished() {
    
    

            }
        });

总结：直接是键值对， 不是json形式