Jsp Struts2 excel文件上传使用org.apache.commons.fileupload_Jsp_File Upload_Struts2

Jsp Struts2 excel文件上传使用org.apache.commons.fileupload

jsp file-upload struts2

Jsp Struts2 excel文件上传使用org.apache.commons.fileupload,jsp,file-upload,struts2,Jsp,File Upload,Struts2,我正在为excel实现文件上载，即xls类型的文档，在提交上载时选择文件。parseRequest返回空列表 List<FileItem> items = (List<FileItem>)upload.parseRequest(request) List items=（List）upload.parseRequest（request）下面是CommonFileUploadServlet.java供查看- import java.io.File; import jav

我正在为excel实现文件上载，即xls类型的文档，在提交上载时选择文件。parseRequest返回空列表

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

List items=（List）upload.parseRequest（request）

下面是CommonFileUploadServlet.java供查看-

import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

public class CommonsFileUploadServlet extends HttpServlet {

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        File fullFile = null;
        FileItem item = null;
        int FILE_SIZE = 2097152;
        try {
            boolean isMultipart = ServletFileUpload.isMultipartContent(request);

            if (isMultipart) {
                FileItemFactory factory = new DiskFileItemFactory();
                ServletFileUpload upload = new ServletFileUpload(factory);
                List<FileItem> items = (List<FileItem>) upload.parseRequest(request);
                System.out.println("Number of fields: " + items.size());
                Iterator<FileItem> itr = items.iterator();
                String msg = "";

                while (itr.hasNext()) {
                    try {
                        item = (FileItem) itr.next();

                        if (item.isFormField()) {
                            String fieldName = item.getFieldName();
                            if (fieldName.equals("name")) {
                                request.setAttribute("msg", "Thank You: " + item.getString());
                            }
                        } else {
                            String path = request.getParameter("path");
                            String field = request.getParameter("field");
                            System.out.println("path >>" + path + "<br/><br/>");
                            fullFile = new File(item.getName());
                            String imageName = fullFile.getName();
                            File f = new File(path);
                            f.mkdirs();
                            File savedFile = new File(path + "/", imageName);
                            fullFile = uniqueFile(savedFile, path);
                            item.write(fullFile);
                            msg = "file uploaded successfully";
                        }
                    } catch (Exception e) {
                        e.printStackTrace();
                        msg = "Problem occured while uploading file.<br>Please try again";
                    }
                }
            } else {
                System.out.println("not a multipart request");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public File uniqueFile(File f,String pa) {

        return f;       
    }

}

<body>
        <center>
            <form action="upload.jsp?path=<%=path%>&field=<%=field%>" name="form" method="POST" enctype="multipart/form-data">
                <b><font face=verdana size=2>Upload File:<br><br></font></b>
                <input type="file" name="uploadFile" id="uploadFile"/><br><br>
                <input type="submit" name="Submit" value="Submit" onclick="return callCheck();"/>
            </form>
        </center>
    </body>

导入java.io.File；
导入java.io.IOException；
导入java.util.Iterator；
导入java.util.List；
导入javax.servlet.ServletException；
导入javax.servlet.http.HttpServlet；
导入javax.servlet.http.HttpServletRequest；
导入javax.servlet.http.HttpServletResponse；
导入org.apache.commons.fileupload.FileItem；
导入org.apache.commons.fileupload.FileItemFactory；
导入org.apache.commons.fileupload.disk.DiskFileItemFactory；
导入org.apache.commons.fileupload.servlet.ServletFileUpload；
公共类CommonFileUploadServlet扩展了HttpServlet{
受保护的void doPost（HttpServletRequest请求、HttpServletResponse响应）引发ServletException、IOException{
File fullFile=null；
FileItem=null；
int FILE_SIZE=2097152；
试一试{
布尔值isMultipart=ServletFileUpload.isMultipartContent（请求）；
if（isMultipart）{
FileItemFactory=new DiskFileItemFactory（）；
ServletFileUpload upload=新的ServletFileUpload（工厂）；
List items=（List）upload.parseRequest（request）；
System.out.println（“字段数：+items.size（））；
迭代器itr=items.Iterator（）；
字符串msg=“”；
while（itr.hasNext（））{
试一试{
item=（FileItem）itr.next（）；
if（item.isFormField（））{
字符串fieldName=item.getFieldName（）；
if（fieldName.equals（“name”））{
setAttribute（“msg”，“谢谢：”+item.getString（））；
}
}否则{
字符串路径=request.getParameter（“路径”）；
字符串字段=request.getParameter（“字段”）；
System.out.println（“路径>>”+path+“

”）；
fullFile=新文件（item.getName（））；
字符串imageName=fullFile.getName（）；
文件f=新文件（路径）；
f、 mkdirs（）；
File savedFile=新文件（路径+“/”，图像名称）；
fullFile=uniqueFile（保存文件，路径）；
写入（完整文件）；
msg=“文件上传成功”；
}
}捕获（例外e）{
e、 printStackTrace（）；
msg=“上传文件时出现问题。
请重试”；
}
}
}否则{
System.out.println（“不是多部分请求”）；
}
}捕获（例外e）{
e、 printStackTrace（）；
}
}
公共文件uniqueFile（文件f，字符串pa）{
返回f；
}
}

dataMigration.jsp如下-

import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

public class CommonsFileUploadServlet extends HttpServlet {

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        File fullFile = null;
        FileItem item = null;
        int FILE_SIZE = 2097152;
        try {
            boolean isMultipart = ServletFileUpload.isMultipartContent(request);

            if (isMultipart) {
                FileItemFactory factory = new DiskFileItemFactory();
                ServletFileUpload upload = new ServletFileUpload(factory);
                List<FileItem> items = (List<FileItem>) upload.parseRequest(request);
                System.out.println("Number of fields: " + items.size());
                Iterator<FileItem> itr = items.iterator();
                String msg = "";

                while (itr.hasNext()) {
                    try {
                        item = (FileItem) itr.next();

                        if (item.isFormField()) {
                            String fieldName = item.getFieldName();
                            if (fieldName.equals("name")) {
                                request.setAttribute("msg", "Thank You: " + item.getString());
                            }
                        } else {
                            String path = request.getParameter("path");
                            String field = request.getParameter("field");
                            System.out.println("path >>" + path + "<br/><br/>");
                            fullFile = new File(item.getName());
                            String imageName = fullFile.getName();
                            File f = new File(path);
                            f.mkdirs();
                            File savedFile = new File(path + "/", imageName);
                            fullFile = uniqueFile(savedFile, path);
                            item.write(fullFile);
                            msg = "file uploaded successfully";
                        }
                    } catch (Exception e) {
                        e.printStackTrace();
                        msg = "Problem occured while uploading file.<br>Please try again";
                    }
                }
            } else {
                System.out.println("not a multipart request");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public File uniqueFile(File f,String pa) {

        return f;       
    }

}

<body>
        <center>
            <form action="upload.jsp?path=<%=path%>&field=<%=field%>" name="form" method="POST" enctype="multipart/form-data">
                <b><font face=verdana size=2>Upload File:<br><br></font></b>
                <input type="file" name="uploadFile" id="uploadFile"/><br><br>
                <input type="submit" name="Submit" value="Submit" onclick="return callCheck();"/>
            </form>
        </center>
    </body>


上传文件：

请查找以下调试分析-

import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

public class CommonsFileUploadServlet extends HttpServlet {

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        File fullFile = null;
        FileItem item = null;
        int FILE_SIZE = 2097152;
        try {
            boolean isMultipart = ServletFileUpload.isMultipartContent(request);

            if (isMultipart) {
                FileItemFactory factory = new DiskFileItemFactory();
                ServletFileUpload upload = new ServletFileUpload(factory);
                List<FileItem> items = (List<FileItem>) upload.parseRequest(request);
                System.out.println("Number of fields: " + items.size());
                Iterator<FileItem> itr = items.iterator();
                String msg = "";

                while (itr.hasNext()) {
                    try {
                        item = (FileItem) itr.next();

                        if (item.isFormField()) {
                            String fieldName = item.getFieldName();
                            if (fieldName.equals("name")) {
                                request.setAttribute("msg", "Thank You: " + item.getString());
                            }
                        } else {
                            String path = request.getParameter("path");
                            String field = request.getParameter("field");
                            System.out.println("path >>" + path + "<br/><br/>");
                            fullFile = new File(item.getName());
                            String imageName = fullFile.getName();
                            File f = new File(path);
                            f.mkdirs();
                            File savedFile = new File(path + "/", imageName);
                            fullFile = uniqueFile(savedFile, path);
                            item.write(fullFile);
                            msg = "file uploaded successfully";
                        }
                    } catch (Exception e) {
                        e.printStackTrace();
                        msg = "Problem occured while uploading file.<br>Please try again";
                    }
                }
            } else {
                System.out.println("not a multipart request");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public File uniqueFile(File f,String pa) {

        return f;       
    }

}

<body>
        <center>
            <form action="upload.jsp?path=<%=path%>&field=<%=field%>" name="form" method="POST" enctype="multipart/form-data">
                <b><font face=verdana size=2>Upload File:<br><br></font></b>
                <input type="file" name="uploadFile" id="uploadFile"/><br><br>
                <input type="submit" name="Submit" value="Submit" onclick="return callCheck();"/>
            </form>
        </center>
    </body>

在调试模式下的变量下，我可以看到请求变量在多文件表中有文件

但是items变量为空，i/e modcount=0&size=0

web.xml文件-

<web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <display-name>MySystem</display-name>
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
        <init-param>
            <param-name>actionPackages</param-name>
            <param-value>com.emsproject</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <listener>
        <listener-class>org.apache.struts2.tiles.StrutsTilesListener</listener-class>
    </listener>
    <listener>
        <description>sessionListener</description>
        <listener-class>com.emsproject.action.common.SessionListener</listener-class>
    </listener>
    <context-param>
        <param-name>tilesDefinitions</param-name>
        <param-value>/WEB-INF/tiles.xml</param-value>
    </context-param>
    <welcome-file-list>
        <welcome-file>/jsp/common/index.html</welcome-file>
    </welcome-file-list>
    <servlet>
        <servlet-name>SysInfo</servlet-name>
        <servlet-class>com.emsproject.action.common.SysInfoServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>SysInfo</servlet-name>
        <url-pattern>/eapp/*</url-pattern>
    </servlet-mapping>
</web-app>


我的系统
支柱2
org.apache.struts2.dispatcher.ng.filter.strutspreadexecutefilter
行动包
com.ems项目
支柱2
/*
org.apache.struts2.tiles.StrutsTilesListener
会话侦听器
com.emsproject.action.common.SessionListener
瓷砖定义
/WEB-INF/tiles.xml
/jsp/common/index.html
系统信息
com.emsproject.action.common.SysInfoServlet
系统信息
/eapp/*

我尝试了许多可能的替代方法，但是parseRequest方法返回空列表

请在这方面帮助我，因为我整天都在为这个问题挣扎：( 我不想使用s:file，即struts文件上传功能

谢谢

pshinde31

我找到了解决我所面临问题的方法@

从上面的帖子中看到的东西：）-

我终于安全地将struts2过滤器映射从“/”更改为“.action” 今天，我成功地将redback struts2与我现有的网络应用。

我尝试了一下&S2 fileupload拦截器没有干扰&我所有使用S2的操作都有*.action扩展名

感谢Roman C&Dave的时间和努力，我很感激

pshinde31

看，我之前确实检查过上面的帖子，但不确定如何实现相同的功能，也不确定我需要在struts操作中进行哪些明确的修改，以便从请求中接收文件列表，该列表中存在。我已经将上传代码从jsp转移到servlet类并编辑了原始帖子。我验证了所有上述引用，但仍然无法上传文件。此外，由于没有记录错误，因此我很难进行必要的更改。从上面的代码片段中，我可以知道需要进行哪些更改/修改。我的Struts操作被添加到原来的帖子中。我也不能简单地绕过/忽略/避免Struts 2 fileUpload拦截器干扰这个实现