Springboot使用内置对象HttpServletRequest、HttpServletResponse

1、通过Springboot程序可以发现，Springboot中控制器的形式和Springmvc中是一样的，因此在程序中使用jsp的内置对象也可以按照与Springmvc同样的方式进行。

package org.springboot.tentent.controller;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class SampleController {

    @RequestMapping(value = "/hello")
    public Map<String, String> hello(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) {
        Map<String, String> map = new HashMap<String, String>();
        map.put("客户端的ip地址： ", httpServletRequest.getRemoteAddr());
        map.put("客户端的响应编码： ", httpServletResponse.getCharacterEncoding());
        map.put("客户端的SessionID： ", httpServletRequest.getSession().getId());
        map.put("项目的真实路径： ", httpServletRequest.getServletContext().getRealPath("/"));
        return map;
    }

}

访问如下所示：

除了在控制器的方法上使用参数来接收内置对象外，也可以利用ServletRequestAttributes形式来获取内置对象。 

package org.springboot.tentent.controller;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

@RestController
public class SampleController {

    @RequestMapping(value = "/hello")
    public Map<String, String> hello(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) {
        Map<String, String> map = new HashMap<String, String>();
        map.put("客户端的ip地址： ", httpServletRequest.getRemoteAddr());
        map.put("客户端的响应编码： ", httpServletResponse.getCharacterEncoding());
        map.put("客户端的SessionID： ", httpServletRequest.getSession().getId());
        map.put("项目的真实路径： ", httpServletRequest.getServletContext().getRealPath("/"));
        return map;
    }

    @RequestMapping(value = "/hello2")
    public Map<String, String> hello() {
        // 获取HttpServletRequest内置对象
        HttpServletRequest httpServletRequest = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes())
                .getRequest();
        // 获取HttpServletResponse内置对象
        HttpServletResponse httpServletResponse = ((ServletRequestAttributes) RequestContextHolder
                .getRequestAttributes()).getResponse();
        Map<String, String> map = new HashMap<String, String>();
        map.put("客户端的ip地址： ", httpServletRequest.getRemoteAddr());
        map.put("客户端的响应编码： ", httpServletResponse.getCharacterEncoding());
        map.put("客户端的SessionID： ", httpServletRequest.getSession().getId());
        map.put("项目的真实路径： ", httpServletRequest.getServletContext().getRealPath("/"));
        return map;
    }

}

访问如下所示：