在Servlet过滤器中向请求添加HTTP标头

在Servlet过滤器中向请求添加HTTP标头

Extend

HttpServletRequestWrapper

，覆盖标头吸气剂以返回参数：

public class AddParamsToHeader extends HttpServletRequestWrapper {    public AddParamsToHeader(HttpServletRequest request) {        super(request);    }    public String getHeader(String name) {        String header = super.getHeader(name);        return (header != null) ? header : super.getParameter(name); // Note: you can't use getParameterValues() here.    }    public Enumeration getHeaderNames() {        List<String> names = Collections.list(super.getHeaderNames());        names.addAll(Collections.list(super.getParameterNames()));        return Collections.enumeration(names);    }}

..并用它包装原始请求：

chain.doFilter(new AddParamsToHeader((HttpServletRequest) request), response);

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也就是说，我个人认为这是个坏主意。而是给它直接访问参数或将参数传递给它的权限。