Spring-Boot框架RestFul设计风格改进请求访问------Spring-Boot框架

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已于 2023-10-23 15:46:23 修改

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分类专栏： # Spring框架 # Spring-Boot框架 JAVA 文章标签： java spring boot spring maven tomcat java-ee 后端

于 2023-09-30 11:54:48 首次发布

本文链接：https://blog.youkuaiyun.com/2201_75960169/article/details/133430493

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文章介绍了使用SpringBoot创建RESTfulAPI，包括GET和POST方法处理用户信息、文件上传功能，以及如何实现登录拦截器。还讨论了multipart配置，如文件上传大小限制和静态资源路径。

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package com.powernode.springbootvue.controller;

import com.powernode.springbootvue.entity.User;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.IOException;

@RestController
public class ParamsController
{
    @GetMapping("/user/get/{id}")
    public String get(@PathVariable int id)
    {
        System.out.println("我在这");
        System.out.println(id);
        return "获取用户信息成功";
    }
    @RequestMapping("/upload")
    public String up(String nickname, MultipartFile photo, HttpServletRequest request)
    {
        System.out.println(nickname);
        System.out.println(photo.getOriginalFilename());
        System.out.println(photo.getContentType());
        System.out.println(System.getProperty("user.dir"));
        String path = request.getServletContext().getRealPath("/upload/");
        System.out.println(path);
        try {
            saveFile(photo,path);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        return "上传成功";
    }
    public void saveFile(MultipartFile photo,String path) throws IOException {
        File dir = new File(path);
        if(!dir .exists())
        {
            dir.mkdir();
        }
        File file = new File(path + photo.getOriginalFilename());
        photo.transferTo(file);
    }
    @RequestMapping("/user/helloGet")
    public String helloGet(@RequestParam(value = "nickname",required = false) String name)
    {
        return name;
    }
    @RequestMapping("/user/helloPost")
    public String helloPost(@RequestParam(value = "nickname",required = false) String name,String password)
    {
        System.out.println(name + password);
        return name;
    }
    @RequestMapping(value = "/PostTest",method = RequestMethod.POST)
    public void PostTest(User user)
    {
        System.out.println(user.toString());
    }
    @RequestMapping(value = "/PostTest1",method = RequestMethod.POST)
    //如果前端回传的json类型的数据,需要添加上@RequestBody这个注解,否则无法接收
    public void PostTest1(@RequestBody User user)
    {
        System.out.println(user.toString());
    }
    @RequestMapping("/user/**")
    public String test()
    {
        return "通配符请求";
    }
}

package com.powernode.springbootvue.controller;

import com.powernode.springbootvue.entity.User;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.IOException;

@RestController
public class ParamsController
{
    @GetMapping("/user/get/{id}")
    public String get(@PathVariable int id)
    {
        System.out.println("我在这");
        System.out.println(id);
        return "获取用户信息成功";
    }
    @RequestMapping("/upload")
    public String up(String nickname, MultipartFile photo, HttpServletRequest request)
    {
        System.out.println(nickname);
        System.out.println(photo.getOriginalFilename());
        System.out.println(photo.getContentType());
        System.out.println(System.getProperty("user.dir"));
        String path = request.getServletContext().getRealPath("/upload/");
        System.out.println(path);
        try {
            saveFile(photo,path);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        return "上传成功";
    }
    public void saveFile(MultipartFile photo,String path) throws IOException {
        File dir = new File(path);
        if(!dir .exists())
        {
            dir.mkdir();
        }
        File file = new File(path + photo.getOriginalFilename());
        photo.transferTo(file);
    }
    @RequestMapping("/user/helloGet")
    public String helloGet(@RequestParam(value = "nickname",required = false) String name)
    {
        return name;
    }
    @RequestMapping("/user/helloPost")
    public String helloPost(@RequestParam(value = "nickname",required = false) String name,String password)
    {
        System.out.println(name + password);
        return name;
    }
    @RequestMapping(value = "/PostTest",method = RequestMethod.POST)
    public void PostTest(User user)
    {
        System.out.println(user.toString());
    }
    @RequestMapping(value = "/PostTest1",method = RequestMethod.POST)
    //如果前端回传的json类型的数据,需要添加上@RequestBody这个注解,否则无法接收
    public void PostTest1(@RequestBody User user)
    {
        System.out.println(user.toString());
    }
    @RequestMapping("/user/**")
    public String test()
    {
        return "通配符请求";
    }
}

package com.powernode.springbootvue.interceptor;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.HandlerInterceptor;

public class LoginInterceptor implements HandlerInterceptor
{
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("LoginInterceptor");
        //true是放行,false是拦截
        return true;
    }
}

package com.powernode.springbootvue.interceptor;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.HandlerInterceptor;

public class LoginInterceptor implements HandlerInterceptor
{
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("LoginInterceptor");
        //true是放行,false是拦截
        return true;
    }
}

spring.servlet.multipart.max-file-size=10MB
spring.servlet.multipart.max-request-size=10MB
spring.web.resources.static-locations=/upload/

spring.servlet.multipart.max-file-size=10MB
spring.servlet.multipart.max-request-size=10MB
spring.web.resources.static-locations=/upload/