controller層:

@RequestMapping("/payment")
@RestController
public class WxPayController {

    public WxPayServiceImpl wxPayService = new WxPayServiceImpl();

    @RequestMapping("/wxpay/{product_id}")
    public String getWxQrCode(@PathVariable("product_id") Integer productId) {
        System.out.println(productId);
        return wxPayService.getWxQrCode(productId);
    }
}
 

service層:

@Service
public class WxPayServiceImpl implements WxPayService {

    @Autowired
    public WxPayConfigBean wxPayConfigBean;

    @Override
    public String getWxQrCode(Integer productId) {
        System.out.println("wxPayConfigBean:" + wxPayConfigBean);
        HashMap<String, String> map = new HashMap<String,String>();
        map.put("appid",wxPayConfigBean.getAppID());
        map.put("mch_id",wxPayConfigBean.getMchID());
        //這裡獲得的是以秒為單位的時間戳
        Long timeStamp =  WXPayUtil.getCurrentTimestamp();
        map.put("time_stamp",timeStamp.toString());
        map.put("product_id",productId.toString());
        try {
            map.put("sign",WXPayUtil.generateSignature(map,wxPayConfigBean.getKey()));
        } catch (Exception exception) {
            exception.printStackTrace();
        }
        String str = "//wxpay/bizpayurl?"
                + "sign=" + map.get("sign")
                + "&appid=" + map.get("appid")
                + "&mch_id= " + map.get("mch_id")
                + "&product_id=" + map.get("product_id")
                + "&time_stamp=" + map.get("time_stamp")
                + "&nonce_str=" + map.get("nonce_str");
        return JsonUtil.ajaxReturn(str);
    }
}

 

測試該介面可以發現:wxPayConfigBean:null,顯然即便這裡用了@Autowired但還是注入失敗了.然是如果我們通過junit直接測試:

@Autowired
public WxPayConfigBean wxPayConfigBean;

@Test
void contextLoads() {
    System.out.println(wxPayConfigBean.toString());
}

此時,資料注入又是成功的.

查詢了比較多的資料後我突然明白自己對於new和@Autuwired的理解還是有很大問題.new建立了一個新物件,但Autowired不是,它是通過先匹配型別再匹配名字

@RequestMapping("/payment")
@RestController
public class WxPayController {

    @Autowired
    public WxPayServiceImpl wxPayService;

    @RequestMapping("/wxpay/{product_id}")
    public String getWxQrCode(@PathVariable("product_id") Integer productId) {
        System.out.println(productId);
        return wxPayService.getWxQrCode(productId);
    }
}