PayMchAPI.payUnifiedorder 接口中 unifiedorder.setBody(中文)，无法验证签名通过

[wcp1230]

Unifiedorder unifiedorder = new Unifiedorder();
unifiedorder.setAppid(appid);
unifiedorder.setMch_id(mch_id);
unifiedorder.setNonce_str(UUID.randomUUID().toString().replace("-", ""));
//body中数据设置为中文时，无法验证签名通过
unifiedorder.setBody("商品信息");
unifiedorder.setOut_trade_no("123456");
unifiedorder.setTotal_fee("1");//单位分
unifiedorder.setSpbill_create_ip(request.getRemoteAddr());//IP
unifiedorder.setNotify_url("http://mydomain.com/test/notify");
unifiedorder.setTrade_type("JSAPI");//JSAPI，NATIVE，APP，WAP

    UnifiedorderResult unifiedorderResult = PayMchAPI.payUnifiedorder(unifiedorder,key);

    String json = PayUtil.generateMchPayJsRequestJson(unifiedorderResult.getPrepay_id(), appid, key);

[liyiorg]

没有设置 openid 参数

[summerwxy]

底下这段是我运行的代码，我看了一下有设置了 openid 参数不过依然出现 "签名错误" 应该如何解决？

        Unifiedorder unifiedorder = new Unifiedorder();
        unifiedorder.setAppid(appid); 
        unifiedorder.setMch_id(mchid); 
        unifiedorder.setNonce_str(UUID.randomUUID().toString().toString().replace("-", ""));
        unifiedorder.setOpenid(session.openid);
        unifiedorder.setBody("this_is_english");
        unifiedorder.setOut_trade_no("123456");
        unifiedorder.setTotal_fee("1");//单位分
        unifiedorder.setSpbill_create_ip(request.getRemoteAddr());//IP
        unifiedorder.setNotify_url("http://test.mycompany.com/imis/market/notify");
        unifiedorder.setTrade_type("JSAPI");//JSAPI，NATIVE，APP，WAP
        // 统一下单，生成预支付订单
        UnifiedorderResult unifiedorderResult = PayMchAPI.payUnifiedorder(unifiedorder,key);

[summerwxy]

解决了, 我没去商户平台设置API密钥, 设置后正常