SpringBoot实现单文件上传

时间：2020-10-25 14:33:50|栏目：JAVA代码|点击：次

SpringBoot实现单文件上传功能，供大家参考，具体内容如下

架构为springboot+thymeleaf,采用ajax方式提交

1. 页面testFile.html

<!DOCTYPE html>
<html>
<head>
 <meta charset="UTF-8">
 <title>测试文件上传</title>
 
 <script src="../static/jquery/jquery-2.1.1.min.js" th:src="@{/jquery/jquery-2.1.1.min.js}"></script>
  
  <script type="text/javascript">
  $(function () {
    $("#upload1").click(function () {
      var formData = new FormData();
      formData.append("file", document.getElementById("file").files[0]);  
      $.ajax({
        url: "/file/upload1",
        type: "POST",
        data: formData,
        
        //必须false才会自动加上正确的Content-Type
        contentType: false,
        
        //必须false才会避开jquery对 formdata 的默认处理
        //XMLHttpRequest会对 formdata 进行正确的处理
        processData: false,
        
        success: function (data) {
          if (data.status == "true") {
            alert("上传成功！");
          }
          if (data.status == "error") {
            alert(data.msg);
          }
        },
        error: function () {
          alert("上传失败！");
        }
      });
    });
  });
  </script>
</head>
<body>
 
  <form method="POST" enctype="multipart/form-data" action="/file/upload1">
   <fieldset>
     <legend>单一文件上传实例：</legend>
       文件1：<input type="file" name="file" id="file"/><br/>
      
      <input type="button" id="upload1" value="上传"/><br/>
    </fieldset>
  </form>

</body>
</html>

2. FileController.java

package com.stormkai.controller;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import lombok.extern.slf4j.Slf4j;

@Controller
@RequestMapping("/file")
@Slf4j
public class FileController {
 
 @GetMapping("/index")
 public String index() {
 return "testFile";
 }
 
 @PostMapping("/upload1")
  @ResponseBody
  public Map<String, Object> upload1(@RequestParam("file") MultipartFile file, HttpServletRequest request) throws IOException {
    
    log.info("系统路径={}",request.getSession().getServletContext().getRealPath(""));
    String path = "F:\\uploadfile\\";
    if(!new File(path).exists()){
     new File(path).mkdirs();
 }
    file.transferTo(new File(path + file.getOriginalFilename()));
    Map<String, Object> result = new HashMap<>();
    result.put("status", "true");
    result.put("data", null);
    return result;
  }

}

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