与 Paypal 的 Spring 请求映射

Question

对于返回 URL，您似乎必须像这样定义整个 URL:

String returnURL = "http://localhost:8080/appName/shopping/confirmorder";

现在，我遇到了请求映射的问题:

    @RequestMapping(value = "/shopping/confirmorder?token={token}&PayerID={payerID}", method = RequestMethod.GET)
public String doGet(@PathVariable("token") String token, @PathVariable("payerID") String payerID,
        HttpServletRequest request) {

    // do stuff
}

由于某种原因从未调用 Controller ？

最终从Paypal返回的returnURL是这样的:

http://localhost:8080/appName/shopping/confirmorder?token=EC-4...G&PayerID=A...W

请注意 ID 已被编辑。

Answer 1

如果您有两个名为token 和payerID 的路径变量，那么方法签名应该是

public void doGet(@PathVariable("token") String token, 
                  @PathVariable("payerID") String token, 
                  HttpServletRequest request, 
                  HttpServletResponse response)

您如何期望 Spring 将这两个字符串放入 int 类型的单个 option 参数中？

参见 http://static.springsource.org/spring/docs/current/spring-framework-reference/html/mvc.html#mvc-ann-requestmapping-uri-templates

此外，PathVariable 用于将请求路径的部分绑定(bind)到方法参数。在您的情况下，您有请求参数。因此，您应该使用@RequestParam:

@RequestMapping(value = "/shopping/confirmorder", method = RequestMethod.GET)
public void doGet(@RequestParam("token") String token, 
                  @RequestParam("PayerID") String token, 
                  HttpServletRequest request, 
                  HttpServletResponse response)

参见 http://static.springsource.org/spring/docs/current/spring-framework-reference/html/mvc.html#mvc-ann-requestparam