springMVC使用PUT、DELETE方法传递参数解决方案

在web.xml中新增过滤器

<filter>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

需要注意的是，只有context-type：application/x-www-form-urlencoded的请求才会被过滤。

该过滤器的核心方法如下：

protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
        throws ServletException, IOException {

    String paramValue = request.getParameter(this.methodParam);
    if ("POST".equals(request.getMethod()) && StringUtils.hasLength(paramValue)) {
        String method = paramValue.toUpperCase(Locale.ENGLISH);
        HttpServletRequest wrapper = new HttpMethodRequestWrapper(request, method);
        filterChain.doFilter(wrapper, response);
    }
    else {
        filterChain.doFilter(request, response);
    }
}

将post方法转换为标准的put或者delete方法

前端ajax访问时实例代码如下：

$.ajax({
    type : "POST",
    url : "student",
    dataType : "json",
    async : false,
    data : {
        provinceIds : array,
        //该参数指定后台接受方法类型,put/delete
        _method : "delete",
        },
    success : function(data) {
            
    });

后台接受方法：

@RequestMapping(value="student",method = RequestMethod.DELETE, produces = {"text/javascript;charset=UTF-8"})
public String del(HttpServletRequest request, HttpServletResponse response)
{
   return null;
}