这段代码要怎么修改图片的上传路径？

549663844 2018-11-03 10:49:26

这是通过表单提交过来的，这里的代码默认把其中上传的图片放到tomcat下的webapps下面去了，每次重新部署都会自动删除这些图片，我想把上传路径改为Tomcat文件夹之外的，不知道改哪里。

package sh.shop.web.servlet.manager;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.lang.reflect.InvocationTargetException;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.beanutils.BeanUtils;

import org.apache.commons.fileupload.FileItem;

import org.apache.commons.fileupload.FileUploadException;

import org.apache.commons.fileupload.disk.DiskFileItemFactory;

import org.apache.commons.fileupload.servlet.ServletFileUpload;

import org.apache.commons.io.IOUtils;

import sh.shop.domain.Product;

import sh.shop.exception.AddProductException;

import sh.shop.service.ProductService;

import sh.shop.utils.FileUploadUtils;

import sh.shop.utils.IdUtils;

/**

 * 后台

 * 添加商品的servlet

 */



@WebServlet("/addProduct")

public class AddProductServlet extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)

			throws ServletException, IOException {

		doPost(request, response);

	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)

			throws ServletException, IOException {

		// 创建product对象，用于封装提交的数据

		Product p = new Product();

		Map<String, String> map = new HashMap<String, String>();

		// 通过IdUtil工具类生成UUID，封装成商品id

		//map.put("id", IdUtils.getUUID());



		DiskFileItemFactory dfif = new DiskFileItemFactory();

		// 设置临时文件存储位置

		dfif.setRepository(new File(this.getServletContext().getRealPath(

				"/temp")));

		// 设置上传文件缓存大小为10m

		dfif.setSizeThreshold(1024 * 1024 * 10);

		// 创建上传组件

		ServletFileUpload upload = new ServletFileUpload(dfif);

		// 处理上传中文乱码

		upload.setHeaderEncoding("utf-8");

		try {

			List<FileItem> items = upload.parseRequest(request);

			for (FileItem item : items) {

				if (item.isFormField()) {

					String fieldName = item.getFieldName(); 

					String value = item.getString("utf-8"); 

					map.put(fieldName, value);

				} else {

					String fileName = item.getName();

					fileName = FileUploadUtils.subFileName(fileName);



					String randomName = FileUploadUtils

							.generateRandonFileName(fileName);



					String randomDir = FileUploadUtils

							.generateRandomDir(randomName);

					String imgurl_parent = "/productImg";



					File parentDir = new File(this.getServletContext()

							.getRealPath(imgurl_parent));

					if (!parentDir.exists()) {

						parentDir.mkdirs();

					}

					String imgurl = imgurl_parent + "/" + randomName;



					map.put("imgurl", imgurl);



					IOUtils.copy(item.getInputStream(), new FileOutputStream(

							new File(parentDir, randomName)));

					item.delete();

				}

			}

		} catch (FileUploadException e) {

			e.printStackTrace();

		}

		try {

			// 通过BeanUtils工具将数据封装到javabean中

			BeanUtils.populate(p, map);

		} catch (IllegalAccessException e) {

			e.printStackTrace();

		} catch (InvocationTargetException e) {

			e.printStackTrace();

		}

		

		// 创建ProductService类的对象

		ProductService service = new ProductService();

		try {

			service.addProduct(p);

			response.sendRedirect(request.getContextPath()

					+ "/listProduct");

			return;

		} catch (AddProductException e) {

			e.printStackTrace();

			response.getWriter().write("添加商品失败");

			return;

		}

	}

}

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十八道胡同 2018-11-03

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File parentDir = new File(this.getServletContext().getRealPath(imgurl_parent));//这里是文件目录，你修改这就好了
if (!parentDir.exists()) {
parentDir.mkdirs();
}
String imgurl = imgurl_parent + "/" + randomName;

map.put("imgurl", imgurl);

IOUtils.copy(item.getInputStream(), new FileOutputStream(
new File(parentDir, randomName)));

549663844 2018-11-03