SpringMVC实现图片上传

小灰灰 2023-07-14 14:00 2阅读 0赞

# 1.添加pom依赖 #

<dependency>
          <groupId>commons-fileupload</groupId>
          <artifactId>commons-fileupload</artifactId>
          <version>1.3.1</version>
        </dependency>
        <dependency>
          <groupId>commons-io</groupId>
          <artifactId>commons-io</artifactId>
          <version>2.4</version>
        </dependency>

# 2.在SpringMVC配置文件中配置文件解析器 #

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
            
            <property name="maxUploadSize" value="41300260"></property>
            
            <property name="defaultEncoding" value="utf-8"></property>
        </bean>

# 3.创建上传文件控制器UploadController #

@RestController
    public class UploadController { 
        @PostMapping("/upload")
        @PassToken
        public ResponseResult upload(MultipartFile file, MultipartHttpServletRequest request) throws IOException { 
            Map data = null;
            if(file != null){ 
                String type = null;//文件类型
                String fileName=file.getOriginalFilename();// 文件原名
                System.out.println("上传的源文件名称:"+fileName);
                type=fileName.indexOf(".")!=-1?fileName.substring(fileName.lastIndexOf(".")+1, fileName.length()):null;
                if(type != null){ 
                    if("GIF".equals(type.toUpperCase())||"PNG".equals(type.toUpperCase())||"JPG".equals(type.toUpperCase())){ 
                        // 硬盘中存放图片的路径
                        String realPath="D:\\develop\\tomcat\\apache-tomcat-8.5.40\\upload\\tmp_uploads\\";
                        // 自定义的文件名称
                        String trueFileName=String.valueOf(System.currentTimeMillis())+fileName;
                        //项目发布时图片请求路径
                        String tmpPath = "tmp_uploads/"+trueFileName;
                        // 设置存放图片文件的完整路径
                        String path=realPath+trueFileName;
                        System.out.println("图片存储的路径是:"+path);
                        // 保存文件到硬盘中
                        file.transferTo(new File(path));
                        data = new HashMap<String,Object>();
                        data.put("tmp_path",tmpPath);
                        data.put("url","127.0.0.1:8090/"+tmpPath);
                        return new ResponseResult(data, 200, "上传成功");
    
                    }else { 
                        return new ResponseResult(data, 500, "文件类型错误");
                    }
                }else{ 
                    return new ResponseResult(data, 500, "文件类型为空");
               }
            }else{ 
                return new ResponseResult(data, 500, "没有找到相对应的文件");
    
            }
        }
    }