Question

在Spring MVC中，我可以这样做以获取查询字符串上的项值：

    public void sendMessage(HttpServletResponse response,
                           @RequestParam("Session Id") String sessionId,

但是如何将完整的查询字符串作为一个长字符串？即我不想要它的个别参数，我想要整个事情吗？

非常感谢！

Answer 1

将HttpServletRequest作为参数添加到方法中，并从请求中获取查询字符串：

public void sendMessage(HttpServletRequest request,
                        HttpServletResponse response {
    String queryString = request.getQueryString();
}

Answer 2

你需要这样做：

    public void sendMessage(HttpServletResponse response,
                               @RequestParam("Session Id") String sessionId, HttpServletRequest request,..
    {
   String qString= request.getQueryString();

Answer 3

如果您不想在控制器中使用HttpServletRequest，可以创建解析查询字符串的HandlerMethodArgumentResolver。

示例：

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.PARAMETER)
public @interface QueryString {
}


public class QueryStringResolver implements HandlerMethodArgumentResolver {
    @Override
    public boolean supportsParameter(MethodParameter parameter) {
        Annotation[] parameterAnnotations = parameter.getParameterAnnotations();
        for (Annotation parameterAnnotation : parameterAnnotations) {
            if (QueryString.class.isInstance(parameterAnnotation)) {
                return true;
            }
        }

        return false;
    }

    @Override
    public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest,                                 WebDataBinderFactory binderFactory) throws Exception {
        HttpServletRequest request = webRequest.getNativeRequest(HttpServletRequest.class);
        return request.getQueryString();
    }
}


<mvc:annotation-driven>
    <mvc:argument-resolvers>
        <bean class="mypackage.QueryStringResolver"/>
    </mvc:argument-resolvers>
</mvc:annotation-driven>


public class MyController {
    @RequestMapping(...)
    public String someMethod(@QueryString String queryString) {
        ...
    }
}

Answer 4

Controller本身知道整个查询字符串的内容。

public ModelAndView handleRequest(HttpServletRequest request,
        HttpServletResponse response) throws Exception

然后，您可以从以下位置获取完整的查询字符串：

request.getQueryString();

如何在Spring MVC中请求完整的查询字符串？

4 个答案: