1.依賴html
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>SpringWebContent</groupId> <artifactId>SpringWebContent</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>SpringWebContent Maven Webapp</name> <url>http://maven.apache.org</url> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.4.3.RELEASE</version> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> </dependencies> <properties> <java.version>1.8</java.version> </properties> <build> <finalName>SpringWebContent</finalName> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
2.Application.javajava
package com.roncoo.education; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class SpringBootDemo71Application { public static void main(String[] args) { SpringApplication.run(SpringBootDemo71Application.class, args); } }
3.WebControllerweb
package com.roncoo.education.controller; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.multipart.MultipartHttpServletRequest; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.*; import java.util.List; /** * spring-boot-demo-6-2 * * @author wujing */ @Controller public class WebController { @RequestMapping(value = "index") public String index(ModelMap map) { map.put("title", "thymeleaf hello word"); return "index"; } @RequestMapping(value = "upload") @ResponseBody public String upload(@RequestParam("test") MultipartFile file) { if (file.isEmpty()) { return "文件爲空"; } // 獲取文件名 String fileName = file.getOriginalFilename(); System.out.println("上傳的文件名爲:" + fileName); // 獲取文件的後綴名 String suffixName = fileName.substring(fileName.lastIndexOf(".")); System.out.println("上傳的後綴名爲:" + suffixName); // 文件上傳後的路徑 String filePath = "D://test//"; // 解決中文問題,liunx下中文路徑,圖片顯示問題 // fileName = UUID.randomUUID() + suffixName; File dest = new File(filePath + fileName); // 檢測是否存在目錄 if (!dest.getParentFile().exists()) { dest.getParentFile().mkdirs(); } try { file.transferTo(dest); return "上傳成功"; } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return "上傳失敗"; } //文件下載相關代碼 @RequestMapping("/download") public String downloadFile(org.apache.catalina.servlet4preview.http.HttpServletRequest request, HttpServletResponse response){ String fileName = "FileUploadTests.java"; if (fileName != null) { //當前是從該工程的WEB-INF//File//下獲取文件(該目錄能夠在下面一行代碼配置)而後下載到C:\\users\\downloads即本機的默認下載的目錄 String realPath = request.getServletContext().getRealPath( "//WEB-INF//"); File file = new File(realPath, fileName); if (file.exists()) { response.setContentType("application/force-download");// 設置強制下載不打開 response.addHeader("Content-Disposition", "attachment;fileName=" + fileName);// 設置文件名 byte[] buffer = new byte[1024]; FileInputStream fis = null; BufferedInputStream bis = null; try { fis = new FileInputStream(file); bis = new BufferedInputStream(fis); OutputStream os = response.getOutputStream(); int i = bis.read(buffer); while (i != -1) { os.write(buffer, 0, i); i = bis.read(buffer); } System.out.println("success"); } catch (Exception e) { e.printStackTrace(); } finally { if (bis != null) { try { bis.close(); } catch (IOException e) { e.printStackTrace(); } } if (fis != null) { try { fis.close(); } catch (IOException e) { e.printStackTrace(); } } } } } return null; } //多文件上傳 @RequestMapping(value = "/batch/upload", method = RequestMethod.POST) @ResponseBody public String handleFileUpload(HttpServletRequest request) { List<MultipartFile> files = ((MultipartHttpServletRequest) request) .getFiles("file"); MultipartFile file = null; BufferedOutputStream stream = null; for (int i = 0; i < files.size(); ++i) { file = files.get(i); if (!file.isEmpty()) { try { byte[] bytes = file.getBytes(); stream = new BufferedOutputStream(new FileOutputStream( new File(file.getOriginalFilename()))); stream.write(bytes); stream.close(); } catch (Exception e) { stream = null; return "You failed to upload " + i + " => " + e.getMessage(); } } else { return "You failed to upload " + i + " because the file was empty."; } } return "upload successful"; } }
4.thymleaf模版spring
<!DOCTYPE html> <html lang="en"> <head> <title>Getting Started: Serving Web Content</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> </head> <body> <p>Get your greeting <a href="/greeting">here</a></p> <form action="/upload" method="POST" enctype="multipart/form-data"> 文件:<input type="file" name="test"/> <input type="submit" /> </form> <a href="/download">下載test</a> <p>多文件上傳</p> <form method="POST" enctype="multipart/form-data" action="/batch/upload"> <p>文件1:<input type="file" name="file" /></p> <p>文件2:<input type="file" name="file" /></p> <p><input type="submit" value="上傳" /></p> </form> </body> </html>