spring - Spring中结合GET和POST请求方法

Question

我有一个支持 GET 和 POST 请求的资源。这里是示例资源的示例代码:

@RequestMapping(value = "/books", method = RequestMethod.GET)
public ModelAndView listBooks(@ModelAttribute("booksFilter") BooksFilter filter, two @RequestParam parameters, HttpServletRequest request)
    throws ParseException {
        LONG CODE
}


@RequestMapping(value = "/books", method = RequestMethod.POST)
public ModelAndView listBooksPOST(@ModelAttribute("booksFilter") BooksFilter filter, BindingResult result)
        throws ParseException {
        SAME LONG CODE with a minor difference
}

这两个方法中的代码实际上是相同的，除了变量定义之外。使用 method = {RequestMethod.POST, RequestMethod.GET} 和内部一个简单的 if 可以轻松组合这两种方法。我尝试过，但它不起作用，因为这两种方法最后有一个不同的参数，即 HttpServletRequest 和 BindingResult (@RequestParam 不是必需的，因此在 POST 请求中也不需要)。有什么想法如何结合这两种方法吗？

Answer 1

@RequestMapping(value = "/testonly", method = { RequestMethod.GET, RequestMethod.POST })
public ModelAndView listBooksPOST(@ModelAttribute("booksFilter") BooksFilter filter,
        @RequestParam(required = false) String parameter1,
        @RequestParam(required = false) String parameter2, 
        BindingResult result, HttpServletRequest request) 
        throws ParseException {

    LONG CODE and SAME LONG CODE with a minor difference
}

如果@RequestParam(required = true)那么你必须传递parameter1,parameter2

使用 BindingResult 并根据您的条件请求它们。

另一种方式

@RequestMapping(value = "/books", method = RequestMethod.GET)
public ModelAndView listBooks(@ModelAttribute("booksFilter") BooksFilter filter,  
    two @RequestParam parameters, HttpServletRequest request) throws ParseException {

    myMethod();

}


@RequestMapping(value = "/books", method = RequestMethod.POST)
public ModelAndView listBooksPOST(@ModelAttribute("booksFilter") BooksFilter filter, 
        BindingResult result) throws ParseException {

    myMethod();

    do here your minor difference
}

private returntype myMethod(){
    LONG CODE
}