SpringBoot請求轉(zhuǎn)發(fā)的方式小結(jié)

更新時間：2023年09月18日 15:04:54 作者：墮落年代

本文主要介紹了SpringBoot請求轉(zhuǎn)發(fā)的方式,一共有兩大類,一種是controller控制器轉(zhuǎn)發(fā)一種是使用HttpServletRequest進行轉(zhuǎn)發(fā),本文就詳細的介紹一下,感興趣的可以了解一下

概論

想要使用SpringBoot進行請求的轉(zhuǎn)發(fā)，我們一共是有兩大類（四種方法），一種是controller控制器轉(zhuǎn)發(fā)一種是使用HttpServletRequest進行轉(zhuǎn)發(fā)，這里每個方式都有兩種轉(zhuǎn)發(fā)方式一種內(nèi)部轉(zhuǎn)發(fā)一種外部轉(zhuǎn)發(fā)

controller控制器轉(zhuǎn)發(fā)

package com.example.requestplay.demos.web.RequestPlay1;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
 * @author：DUOLUONIANDAI
 * @DATA：2023/07/26 11:24
 * @Title：
 */
@RestController
public class GetPlay {
    @RequestMapping("/r1")
    public String r1(){
        return "收到請求rt1";
    }
    @RequestMapping("/r2")
    public String r2(){
        return "收到請求rt2";
    }
}

package com.example.requestplay.demos.web.RequestPlay1;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
 * @author：DUOLUONIANDAI
 * @DATA：2023/07/26 11:24
 * @Title：
 */
@Controller
public class ToGetPlay {
    @RequestMapping("/tr1")
    public String r1(){
        return "forward:/r1";
    }
    @RequestMapping("/tr2")
    public String r2(){
        return "redirect:/r2";
    }
}

切記轉(zhuǎn)發(fā)不能使用RestController要不然不會被view解析會直接返回對應的字符串到頁面

HttpServleRequest轉(zhuǎn)發(fā)

package com.example.requestplay.demos.web.RequestPlay2;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
 * @author：DUOLUONIANDAI
 * @DATA：2023/07/26 11:40
 * @Title：
 */
@RestController
public class GetRequest {
    @RequestMapping("/ghr1")
    public String ghr1(){
        return "收到轉(zhuǎn)發(fā)的請求";
    }
    @RequestMapping("/ghr2")
    public String ghr2(){
        return "ghr2收到轉(zhuǎn)發(fā)完畢";
    }
}

package com.example.requestplay.demos.web.RequestPlay2;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
 * @author：DUOLUONIANDAI
 * @DATA：2023/07/26 11:39
 * @Title：
 */
@RestController
public class ToRequest {
    @RequestMapping("/thr1")
    public String r1(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws ServletException, IOException {
        RequestDispatcher requestDispatcher = httpServletRequest.getRequestDispatcher("/ghr1");
        requestDispatcher.forward(httpServletRequest,httpServletResponse);
        return "轉(zhuǎn)發(fā)完畢";
    }
    @RequestMapping("/thr2")
    public String r2(HttpServletResponse httpServletResponse) throws IOException {
        httpServletResponse.sendRedirect("/ghr2");
        return "轉(zhuǎn)發(fā)完畢！";
    }
}