kindeditor与Struts2框架整合无法上传图片的问题

由于struts框架对request对象做了封装,原来处理上传图片的upload_json.jsp文件无法使用了,于是对kindeditor中处理上传图片的upload_json.jsp文件进行重写,通过多次测试后,成功实现了图片的上传。

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
    <%@ page import="java.util.*,java.io.*"%>
    <%@ page import="java.text.SimpleDateFormat"%>
    <%@ page import="org.apache.commons.fileupload.*"%>
    <%@ page import="org.apache.commons.fileupload.disk.*"%>
    <%@ page import="org.apache.commons.fileupload.servlet.*"%>
    <%@ page import="com.opensymphony.xwork2.ActionContext"%>
    <%@ page import="org.apache.struts2.dispatcher.multipart.MultiPartRequestWrapper"%>
    <%@ page import="org.json.simple.*"%>

    <%
        //文件保存目录路径 img_upload是服务器存储上传图片的目录名
        String savePath = request.getSession().getServletContext().getRealPath("/")+ "img_upload/";

        //文件保存目录URL
        String saveUrl = request.getContextPath() + "/img_upload/";

        //定义允许上传的文件扩展名
        String[] fileTypes = new String[] { "gif", "jpg", "jpeg", "png","bmp" };

        //允许最大上传文件大小
        long maxSize = 1024000;

        //Struts2 请求 包装过滤器
        MultiPartRequestWrapper wrapper = (MultiPartRequestWrapper) request;

        //获得上传的文件名
        String fileName = wrapper.getFileNames("imgFile")[0];

        //获得文件过滤器
        File file = wrapper.getFiles("imgFile")[0];

        //得到上传文件的扩展名
        String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();

        //检查扩展名
        if (!Arrays.<String> asList(fileTypes).contains(fileExt)) {
         out.println(getError("上传文件扩展名是不允许的扩展名。"));
         return;
        }
        //检查文件大小
        if (file.length() > maxSize) {
         out.println(getError("上传文件大小超过限制。"));
         return;
        }

        //检查目录
        File uploadDir = new File(savePath);
        if (!uploadDir.isDirectory()) {
         out.println(getError("上传目录不存在。"));
         return;
        }
        //检查目录写入权限
        if (!uploadDir.canWrite()) {
         out.println(getError("上传目录没有写入权限。"));
         return;
        }

        //重构上传图片的名称
        SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
        String newImgName = df.format(new Date()) + "_"+ new Random().nextInt(1000) + "." + fileExt;

        //设置 KE 中的图片文件地址
    String newFileName = request.getScheme() + "://"+ request.getServerName() + ":" + request.getServerPort()
        + saveUrl + newImgName;

        byte[] buffer = new byte[1024];

        //获取文件输出流
        FileOutputStream fos = new FileOutputStream(savePath + newImgName);

        //获取内存中当前文件输入流
        InputStream in = new FileInputStream(file);

        try {
         int num = 0;
           while ((num = in.read(buffer)) > 0) {
         fos.write(buffer, 0, num);
         }
        } catch (Exception e) {
         e.printStackTrace(System.err);
        } finally {
          in.close();
         fos.close();
        }

        //发送给 KE

        JSONObject obj = new JSONObject();
        obj.put("error", 0);
        obj.put("url", saveUrl + newImgName);
        out.println(obj.toJSONString());
        %>
        <%!private String getError(String message) {
         JSONObject obj = new JSONObject();
         obj.put("error", 1);
         obj.put("message", message);
         return obj.toJSONString();
        }
        %>

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波比源码 » kindeditor与Struts2框架整合无法上传图片的问题

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