servlet文件上传

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package sevlet;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.annotation.MultipartConfig;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.Part;import org.apache.commons.lang.StringUtils;/** * <form action="" method="post" enctype="multipart/form-data"> * <input type="file" name="filename"/> * ------WebKitFormBoundarylAJMvADGM2XQONHa *Content-Disposition: form-data; name="filename"; filename="http基础知识.doc" *Content-Type: application/msword *------WebKitFormBoundarylAJMvADGM2XQONHa *Content-Disposition: form-data; name="submit" *提交 *------WebKitFormBoundarylAJMvADGM2XQONHa-- * @author lcathm * */@MultipartConfig(location="D:/tmp/", maxFileSize=1024*1024*10)@WebServlet(name="PartBodyContentServlet", urlPatterns={"/upload.do"},loadOnStartup=0)public class PartBodyContent extends HttpServlet{/** *  */private static final long serialVersionUID = 1L;public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException,IOException{//设置处理编码request.setCharacterEncoding("UTF-8");Part part = request.getPart("filename");//获取文件名String fileName = getFilename(part);part.write(fileName);response.setContentType("text/html;charset=UTF-8");PrintWriter out = response.getWriter();out.println("<!DOCTYPE html>");out.println("<html>");out.println("<body>");out.println("上传成功");out.println("</body>");out.println("</html>");out.flush();out.close();}//获取文件名private String getFilename(Part part) {if (part == null) {return null;}String fileName = part.getHeader("content-disposition");if (StringUtils.isBlank(fileName)) {return null;}return StringUtils.substringBetween(fileName, "filename=\"","\"");}}

<pre name="code" class="java">package sevlet;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.annotation.MultipartConfig;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.Part;import org.apache.commons.lang.StringUtils;/** * <form action="" method="post" enctype="multipart/form-data"> * <input type="file" name="filename"/> * ------WebKitFormBoundarylAJMvADGM2XQONHa *Content-Disposition: form-data; name="filename"; filename="http基础知识.doc" *Content-Type: application/msword *------WebKitFormBoundarylAJMvADGM2XQONHa *Content-Disposition: form-data; name="submit" *提交 *------WebKitFormBoundarylAJMvADGM2XQONHa-- * @author lcathm * */@MultipartConfig(location="D:/tmp/", maxFileSize=1024*1024*10)@WebServlet(name="PartBodyContentsServlet", urlPatterns={"/uploads.do"},loadOnStartup=0)public class PartBodyContents extends HttpServlet{/** *  */private static final long serialVersionUID = 1L;public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException,IOException{//设置处理编码request.setCharacterEncoding("UTF-8");request.getParts();for(Part part :request.getParts()) {if (part.getName().startsWith("filenam")) {String filename = getFilename(part);part.write(filename);}}response.setContentType("text/html;charset=UTF-8");PrintWriter out = response.getWriter();out.println("<!DOCTYPE html>");out.println("<html>");out.println("<body>");out.println("上传成功");out.println("</body>");out.println("</html>");out.flush();out.close();}//获取文件名private String getFilename(Part part) {if (part == null) {return null;}String fileName = part.getHeader("content-disposition");if (StringUtils.isBlank(fileName)) {return null;}return StringUtils.substringBetween(fileName, "filename=\"","\"");}}

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