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文件上传文件上传原理：待补充.... 1.传统的文件上传：commons-fileupload.jarcommons-io.jar传统文件上传需要的jar包表单格式：必须有enctype,表单input标签的name属性需要为upload或者其它也可，但必须有name属性<form action="user/testUpload" method="post" enctype="multipart/form-data">选择文件<input type="file" name="upload"><br><input type="submit" value="上传"></form>@RequestMapping(path = "/testUpload")public String testUpload(HttpServletRequest request) throws Exception {System.out.println("上传文件...");//使用fileupload组件完成文件上传//上传的位置String path = request.getSession().getServletContext().getRealPath("/uploads/");System.out.println("路径" + path);File file = new File(path);if(!file.exists()){boolean mkdir = file.mkdir();}//解析request对象获取上传文件项DiskFileItemFactory factory = new DiskFileItemFactory();ServletFileUpload upload = new ServletFileUpload(factory);//解析requestList<FileItem> items = upload.parseRequest(request);for(FileItem item : items){//说明不是普通表单项if(!item.isFormField()){//说明是文件项，获取文件的名称String filename = item.getName();String uuid = UUID.randomUUID().toString().replace("-","");filename = uuid + "_" + filename;//完成文件上传item.write(new File(path,filename));//删除临时文件,一旦上传文件大小大于10kb就会产生临时文件item.delete();}}return "success";}2.spring mvc文件上传spring.xml配置中添加：<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"><property name="maxInMemorySize" value="10485760"/></bean>表单格式：必须有enctype,表单input标签的name属性需要与方法参数的相同即可<h4>spring mvc上传文件</h4><form action="user/testSpringUpload" method="post" enctype="multipart/form-data">选择文件<input type="file" name="px"><br><input type="submit" value="上传"></form>//测试spring上传文件@RequestMapping(path = "testSpringUpload")public String testSpringUpload(HttpServletRequest request, @RequestParam("px") MultipartFile upload) throws Exception {System.out.println("spring mvc上传文件...");//使用fileupload组件完成文件上传//上传的位置String path = request.getSession().getServletContext().getRealPath("/uploads/");System.out.println("路径" + path);File file = new File(path);if(!file.exists()){file.mkdirs();}//说明是文件项，获取文件的名称String filename = upload.getOriginalFilename();String uuid = UUID.randomUUID().toString().replace("-","");filename = uuid + "_" + filename;upload.transferTo(new File(path,filename));System.out.println("spring mvc文件上传结束!");return "success";}3.跨服务器文件上传，依赖jar包:jersey-client.jarjersey-core.jar跨服务器文件上传的注意事项：存储服务器如果是web项目，要发布带exploded的工程。tomcat的conf/web.xml配置<init-param><param-name>readonly</param-name><param-value>false</param-value></init-param>--------------------------------------------------编码：<h4>跨服务器上传文件</h4><form action="user/testOverServer" method="post" enctype="multipart/form-data">选择文件<input type="file" name="ur"><br><input type="submit" value="上传"></form><bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"><property name="maxInMemorySize" value="10485760"/></bean>3.测试跨服务器上传文件@RequestMapping(path = "/testOverServer")public String testOverServer(@RequestParam("ur") MultipartFile upload) throws Exception {System.out.println("跨服务器上传文件...");String path = "http://localhost:9090/server/uploads/";System.out.println("路径" + path);//说明是文件项，获取文件的名称String filename = upload.getOriginalFilename();String uuid = UUID.randomUUID().toString().replace("-","");filename = uuid + "_" + filename;//创建客户端的对象Client client = Client.create();//和目标服务器进行连接WebResource resource = client.resource(path + filename);//上传文件resource.put(upload.getBytes());System.out.println("跨服务器文件上传结束!");return "success";}跨站文件上传总结：真——他——*——的——*——蛋!springmvc-config.xml在做文件上传配置时，文件上传的解析器id是固定的，不能起别的名 称，否则无法实现请求参数的绑定(不光是文件，其它字段也将无法绑定)文件上传时出现如下错误：404错误：路径错误405错误：Method Not Allowed错误，tomcat需要配置<init-param><param-name>readonly</param-name><param-value>false</param-value></init-param>409错误：returned a response status of 409 Conflict解决方法：在工作空间中找到对应的工程，在target目录下建立相应的文件夹接受文件即可这篇关于服务器文件上传：传统、SpringMvc和跨服(个人笔记)的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
