Java Doget、Dopost方法和文件上传
index.html
<！doctype html> <html lang = "en"> <head> <meta charset = "utf-8"> <title> title> title> </title> </head> <body> <form action = "/test" methode = "post" enctype = "multipart/form-data"> <table> <td> <td> <td> <td> <td> <td> <td> type = "text"> </td> <tr> <td>密：</td> <td colspan = "2"> <input name = "password" type = "password"> </td> </tr> <tr align = "center"> <td> <input name = "login" type = "shoct" value="重置"></td> </tr> <tr> <td colspan="2"> <input type="radio" name="sex" value="male">男 </td> <td colspan="2"> <input type="radio" name="sex" value="female">女 </td> </tr> <tr> <td colspan="2" > <input name="upload" type = "file"> </td> </tr> </table> </form> </body> </html>
testservlet.java
Import org.apache.commons.fileupload.fileitem; Import org.apache.commons.fileupload.fileuploadexception; Import org.apache.commons.fileupload.disk.diskfileItemfactory; importorg.apache.commons.filepload.servpload.servpload.servpload.servpload.servpload.servpload.servpload.servpload.servpload.servpload。 javax.servlet.servletexception; import javax.servlet.servletinputStream; Import javax.servlet.servletoutputStream; Import javax.servlet.annotation.webslet; import javax.servlet.http.httpservlet; import.havellet.http.httpret.httpret.htptpret.htptpret.htptpret. javax.servlet.http.httpservletresponse; Import java.io.bytearrayoutputStream; Import java.io.file; Import java.io.ioexception; Import java.net.urldecoder; Import java.net.urlencoder; Import.util.util.util.util.util.util.util. Day15_Web *作成：Lulu *日付：2016/8/16 */@webervlet（name = "testservlet"）public class testservletはhttpservlet {private file root_upload; public testservlet（）{root_upload = new file（ "c：/temp"）; if（！root_upload.exists（））{root_upload.mkdirs（）; }} // request.setcharacterencoding（ "utf-8"）; servletoutputStream os = response.getOutputStream（）; stringbuilder builder = new StringBuilder（）; builder.append（ "<html>"）; Builder.Append（ "<head>"）; Builder.Append（ "<Meta charset =/" utf-8/">"）; BUILDER.APPEND（ "<Title>测试サーブレット</title>"）; Builder.Append（ "</head>"）; Builder.Append（ "<body>"）; ENUMERATION <String> names = request.getheadernames（）; while（names.hasmoreElements（））{string name = names.nextelement（）; builder.append（name）.append（ "："）.append（request.getheader（name））.append（ "<br>"）; } diskFileItemFactory Factory = new DiskFileItemFactory（）; Factory.SetsisEthReshold（10）; //设置未保存在临时路径的最大值Factory.setRepository（new file（ "c：/temp/temp"））; // {list <fileItem> list = upload.parserequest（request）; //上传的文件列表for（fileitem item：list）{builder.append（item.getFieldName（））.Append（ "："）.isform（）itfiled（）？item.getString（）：item.getName（）） if（！item.isformfield（））{file file = new file（root_upload、item.getname（））; builder.append（file.getabsolutepath（））。append（ "<br>"）; item.write（file）; }}} catch（fileuploadexception e）{e.printstacktrace（）; } catch（Exception e）{e.printstacktrace（）; } //可以从输入流中读取数据// servletinputStream is = request.getInputStream（）; // buffer = new byte [8192]; // int len; // bytearrayoutputStream（）= new bytearrayoutputStream（）; // } // builder.append（ "inputstream："）// .append（bos.tostring（ "utf-8"））// .append（ "<br>"）; // builder.append（ "<h1> post的请求参数</h1>"）。 （parameternames.hasmoreElements（））{// string name = parameternames.nextelement（）; // builder.append（name）// .append（ "："）// .append（request.getParameter（name））// .Append（ "<br/>"）; //} os.write（builder.tostring（）。getBytes（ "utf-8"））; //参数列表：待转码的字符串、字符编码urlencoder.encode（ "＆"、 "utf-8"）; urldecoder.decode（ "％26"、 "utf-8"）; Builder.Append（ "</body>"）; Builder.Append（ "</html>"）; }保護されたvoid doget（httpservletrequest request、httpservletresponse応答）servletexception、ioexception {dopost（request、response）; }}web.xml
<？xml version = "1.0" encoding = "utf-8"？> <web-app xmlns = "http://xmlns.jcp.org/xml/ns/javaee" xmlns：xsi = "http://www.w3.org/2001/xmlschema-instance" xsi：schemalocation = "http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"バージョン= "3.1" <Servlet-Class> org.lulu.learn.testServlet </servlet-class> </servlet> <servlet-mapping> <servlet-name> testServlet </servlet-name> <url-pattern>/test </url-pattern> </servlet-mapping> </web-app>
感谢阅读、希望能帮助到大家、谢谢大家对本站的支持！