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在Spring中结合GET和POST请求方法

问题内容：

我有同时支持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，只是说一个变量定义。可以使用method = {RequestMethod.POST, RequestMethod.GET}和简单的if内部将两种方法轻松组合。我试过了，但是不起作用，因为这两种方法最后都有一个不同的参数，即HttpServletRequestand
BindingResult（（@RequestParam不需要，因此在POST请求中也不需要）。任何想法如何结合这两种方法？


问题答案：
@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
}

如果这样，@RequestParam(required = true)则必须传递parameter1，parameter2

使用BindingResult并根据您的条件请求它们。

另一种方法

@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
}