restful api上傳文件（基礎）-springboot

基于restful api格式的文件上傳（只是上傳到本地）：

package com.nxz.controller;import com.nxz.entity.FileInfo; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.multipart.MultipartFile;import java.io.File; import java.io.IOException; import java.util.Date;@RestController @RequestMapping("/file") public class FileController {@PostMappingpublic FileInfo update(MultipartFile file) throws IOException {System.out.println(file.getName());System.out.println(file.getOriginalFilename());System.out.println(file.getSize());String holder = "G:\\0001-myproject\\mysecurity\\mysecurity-demo\\src\\main\\java\\com\\nxz\\controller";File localFile = new File(holder, new Date().getTime() + ".txt");file.transferTo(localFile);return new FileInfo(localFile.getAbsolutePath());}}

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測試用例：

//偽造的mvc環境@Autowiredprivate WebApplicationContext webApplicationContext;private MockMvc mockMvc;@Beforepublic void before() {mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).build();}@Testpublic void whenUploadSuccess() throws Exception {String file = mockMvc.perform(MockMvcRequestBuilders.fileUpload("/file").file(new MockMultipartFile("file", "test.txt", "multipart/form-data", "hello".getBytes("UTF-8")))).andExpect(MockMvcResultMatchers.status().isOk()).andReturn().getResponse().getContentAsString();System.out.println(file);}

測試用例執行完之后輸出文件絕對路徑：

{"path":"G:\\mysecurity\\mysecurity-demo\\src\\main\\java\\com\\nxz\\controller\\1556463660034.txt"}

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下載：

@GetMapping("/{id}")public void downLoad(@PathVariable String id,HttpServletRequest request,HttpServletResponse response) throws IOException {String holder = "G:\\0001-myproject\\mysecurity\\mysecurity-demo\\src\\main\\java\\com\\nxz\\controller";try (InputStream inputStream = new FileInputStream(new File(holder, id + ".txt"));OutputStream outputStream = response.getOutputStream();) {response.setContentType("application/x-download");response.addHeader("Content-Disposition", "attachment;filename=test.txt");//重新定義下載后名稱//將文件輸入流復制到輸出劉超過年 commons-io依賴IOUtils.copy(inputStream, outputStream);outputStream.flush();}}

訪問：http://localhost:8080/user/1

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posted @ 2019-04-29 22:28 巡山小妖N 閱讀(...) 評論(...) 編輯 收藏

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