最终期望看到的是图片能够存储了：
1、第一步要有上传的接口：先写一个接口，写一个FullTextController层
2、再写一个简单的基本结构： 定义一下文件保存路径
package zero.file.videoProject.controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RequestMapping("/fullText") @RestController public class FullTextController { private static final String STORE_DIR = "D:\\project\\零一电科\\技术资料\\lingyidianke\\zeroBackEnd\\ZerosBackEnd\\src\\main\\resources\\pict\\"; }
3、再引入依赖：
<dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.11.0</version> </dependency>
4、再写一个FullTextController上传文件的接口
package zero.file.videoProject.controller; import org.apache.commons.io.FileUtils; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.multipart.MultipartFile; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.util.UUID; @RequestMapping("/fullText") @RestController public class FullTextController { private static final String STORE_DIR = "D:\\project\\零一电科\\技术资料\\lingyidianke\\zeroBackEnd\\ZerosBackEnd\\src\\main\\resources\\pict\\"; @RequestMapping("/file/upload") public Object uploadPict(@RequestParam("image") MultipartFile file) throws IOException { // 获取文件流 // 获取文件真实名字 String fileName = UUID.randomUUID().toString().substring(0, 10) + file.getOriginalFilename(); // 在服务器中存储文件 FileUtils.copyInputStreamToFile(file.getInputStream(), new File(STORE_DIR + fileName)); // 返回图片url } }
5、接下来图片访问url，写好domain的请求接口,本质这个URL是请求的下载的接口：
6、在编写上面之前，要写好下载文件的接口，编写接口的，下载接口的编写流程是保证编写的路径，找到之后，将他以流的形式的存储到文件当中：
7、写成这样就可以了
package zero.file.videoProject.controller; import org.apache.commons.io.FileUtils; import org.springframework.http.HttpHeaders; import org.springframework.http.MediaType; import org.springframework.web.bind.annotation.*; import org.springframework.web.multipart.MultipartFile; import javax.servlet.http.HttpServletRequest; import java.io.File; import java.io.IOException; import java.nio.file.Files; import java.nio.file.Paths; import java.util.HashMap; import java.util.UUID; import javax.servlet.http.HttpServletResponse; @RequestMapping("/fullText") @RestController public class FullTextController { private static final String STORE_DIR = "D:\\project\\零一电科\\技术资料\\lingyidianke\\zeroBackEnd\\ZerosBackEnd\\src\\main\\resources\\pict\\"; private static final String DOMAIN = "http://localhost:9090/fullText/file/download/"; static class Success { public final int errno; public final Object data; public Success(String url) { this.errno = 0; HashMap<String, String> map = new HashMap<>(); map.put("url", url); this.data = map; } } @RequestMapping("/file/upload") public Object uploadPict(@RequestParam("image") MultipartFile file) throws IOException { // 获取文件流 // 获取文件真实名字 String fileName = UUID.randomUUID().toString().substring(0, 10) + file.getOriginalFilename(); // 在服务器中存储文件 FileUtils.copyInputStreamToFile(file.getInputStream(), new File(STORE_DIR + fileName)); // 返回图片url String url = DOMAIN + fileName; return new Success(url); } @GetMapping("/file/download/{fileName}") public void download(@PathVariable("fileName") String fileName, HttpServletRequest request, HttpServletResponse response) { // 获取真实的文件路径 String filePath = STORE_DIR + fileName; System.out.println("++++完整路径为："+filePath); try { // 下载文件 // 设置响应头 response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE); response.setHeader(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=" + fileName); // 读取文件内容并写入输出流 Files.copy(Paths.get(filePath), response.getOutputStream()); response.getOutputStream().flush(); } catch (IOException e) { response.setStatus(404); } } }
8、 写成这样，请求方式写成GET Params写成Body，form-data写成file，参数名为image
9、这样上传图片的接口就写好了
