spring jquery ajax登录

package com.baidu.phl.control; import java.io.BufferedInputStream; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.OutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.io.IOUtils; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.multipart.MultipartFile; /** * 类没有前缀，url直接配置在方法上 * */ @Controller public class MulipartFileController { private Log log = LogFactory.getLog(MulipartFileController.class); /** * multipartFile参数，不可以从request.getAttribute获取，只能通过下面参数的方式 * * @param model * @param request * @param multipartFile * @return * @throws Exception */ @RequestMapping(value = "/upload", method = RequestMethod.POST) public String upload(ModelMap model, HttpServletRequest request, @RequestParam(value = "myfile") MultipartFile multipartFile) throws Exception { log.info(multipartFile.getName()); File file = new File("c:/my.txt"); multipartFile.transferTo(file); model.put("status", "success!!!"); return "home"; } /** * 返回类型为void * * @param response * @throws Exception */ @RequestMapping(value = "/download", method = RequestMethod.GET) public void download(HttpServletResponse response) throws Exception { OutputStream os = response.getOutputStream(); response.setContentType("application/x-msdownload"); response.setHeader("Content-Disposition", "attachment; filename=" + new String("朴海林的文件.txt".getBytes("GB18030"), "ISO8859-1")); //方法一:不推荐,原始java.io流操作 // BufferedInputStream bis = new BufferedInputStream(new FileInputStream("c:/my.txt")); // byte[] buffer = new byte[1000]; // int len = bis.read(buffer); // os.write(buffer, 0, len); //方法二:推荐,借助commons.io.IOUTils BufferedInputStream bis = new BufferedInputStream(new FileInputStream("c:/my.txt")); byte[] buffer = IOUtils.toByteArray(bis); os.write(buffer); } }