一、kindeditor以及struts2部署搭建不再赘述,如需要请参考kindeditor使用方法 Struts2框架搭建

三、以下列出部分核心代码,如需要全部源码可点击下载

JSP

<textarea id="editor_id" name="content" style="width:950px;height:300px;">这里输入内容...
</textarea>

<script type="text/javascript">   $(function(){KindEditor.ready(function(K) {       var editor1 = K.create('#editor_id', {        //自定义工具栏items:['code', '|', 'justifyleft', 'justifycenter', 'justifyright','justifyfull', 'insertorderedlist', 'insertunorderedlist', 'indent', 'outdent','clearhtml', 'quickformat', 'selectall', '|', 'fullscreen','formatblock', 'fontname', 'fontsize', '|', 'forecolor', 'hilitecolor', 'bold','italic', 'underline', 'strikethrough', 'lineheight', 'removeformat','|', 'image', 'multiimage','insertfile', 'table', 'hr', 'emoticons', 'baidumap', 'pagebreak','anchor', 'link', 'unlink'],uploadJson : 'ImgUpload.action', //图片上传ActionallowImageRemote : false //取消网络图片上传}); });   })</script>

<package name="kindeditor_json" extends="json-default"><!-- 图片上传 --><action name="ImgUpload" class="com.home.web.ImgUploadAction" method="imgUpload"></action></package>

import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.PrintWriter;import java.text.SimpleDateFormat;import java.util.Arrays;import java.util.Date;import java.util.HashMap;import java.util.Random;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.commons.fileupload.FileItemFactory;import org.apache.commons.fileupload.disk.DiskFileItemFactory;import org.apache.commons.fileupload.servlet.ServletFileUpload;import org.apache.struts2.ServletActionContext;import org.apache.struts2.dispatcher.multipart.MultiPartRequestWrapper;import org.json.simple.JSONObject;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;public class ImgUploadAction extends ActionSupport {private static final long serialVersionUID = 1L;public String imgUpload() {//获取response、request对象ActionContext ac = ActionContext.getContext();HttpServletResponse response = (HttpServletResponse) ac.get(ServletActionContext.HTTP_RESPONSE);HttpServletRequest request = (HttpServletRequest) ac.get(ServletActionContext.HTTP_REQUEST);PrintWriter out = null; //输出流try {out = response.getWriter();} catch (IOException e1) {e1.printStackTrace();}String savePath = ServletActionContext.getServletContext().getRealPath("/") + "attached/";// 文件保存目录URLString saveUrl = request.getContextPath() + "/attached/";// 定义允许上传的文件扩展名HashMap<String, String> extMap = new HashMap<String, String>();extMap.put("image", "gif,jpg,jpeg,png,bmp");extMap.put("flash", "swf,flv");extMap.put("media", "swf,flv,mp3,wav,wma,wmv,mid,avi,mpg,asf,rm,rmvb");extMap.put("file", "doc,docx,xls,xlsx,ppt,htm,html,txt,zip,rar,gz,bz2");// 最大文件大小long maxSize = 1000000;response.setContentType("text/html; charset=UTF-8");if (!ServletFileUpload.isMultipartContent(request)) {out.println(getError("请选择文件。"));return null;}// 检查目录File uploadDir = new File(savePath);if (!uploadDir.isDirectory()) {out.println(getError("上传目录不存在。"));return null;}// 检查目录写权限if (!uploadDir.canWrite()) {out.println(getError("上传目录没有写权限。"));return null;}String dirName = request.getParameter("dir");if (dirName == null) {dirName = "image";}if (!extMap.containsKey(dirName)) {out.println(getError("目录名不正确。"));return null;}// 创建文件夹savePath += dirName + "/";saveUrl += dirName + "/";File saveDirFile = new File(savePath);if (!saveDirFile.exists()) {saveDirFile.mkdirs();}SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");String ymd = sdf.format(new Date());savePath += ymd + "/";saveUrl += ymd + "/";File dirFile = new File(savePath);if (!dirFile.exists()) {dirFile.mkdirs();}FileItemFactory factory = new DiskFileItemFactory();ServletFileUpload upload = new ServletFileUpload(factory);upload.setHeaderEncoding("UTF-8");MultiPartRequestWrapper wrapper = (MultiPartRequestWrapper) request;// 获得上传的文件名String fileName = wrapper.getFileNames("imgFile")[0];// imgFile,imgFile,imgFile// 获得文件过滤器File file = wrapper.getFiles("imgFile")[0];// 检查扩展名String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();if (!Arrays.<String> asList(extMap.get(dirName).split(",")).contains(fileExt)) {out.println(getError("上传文件扩展名是不允许的扩展名。\n只允许" + extMap.get(dirName)+ "格式。"));return null;}// 检查文件大小if (file.length() > maxSize) {out.println(getError("上传文件大小超过限制。"));return null;}// 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;byte[] buffer = new byte[1024];// 获取文件输出流FileOutputStream fos;// 获取内存中当前文件输入流InputStream in;try {fos = new FileOutputStream(savePath + "/" + newImgName);in = new FileInputStream(file);int num = 0;while ((num = in.read(buffer)) > 0) {fos.write(buffer, 0, num);}in.close();fos.close();} catch (FileNotFoundException e1) {e1.printStackTrace();} catch (IOException e) {e.printStackTrace();}// 发送给 kindeditorJSONObject obj = new JSONObject();obj.put("error", 0);obj.put("url", saveUrl + "/" + newImgName);out.println(obj.toJSONString());return null;}private String getError(String message) {JSONObject obj = new JSONObject();obj.put("error", 1);obj.put("message", message);return obj.toJSONString();}}

uploadJson : '../jsp/upload_json.jsp'

但如果按照upload_json.jsp中的程序进行上传时执行到

List items = upload.parseRequest(request);Iterator itr = items.iterator();while (itr.hasNext()) {}

struts2过滤访问jsp时,会改变reqeust的类型,由HttpServletRequest变成MultiPartRequestWrapper,所以parseRequest就返回了null

于是我们就需要对request进行转换

MultiPartRequestWrapper wrapper = (MultiPartRequestWrapper) request;

String fileName = wrapper.getFileNames("imgFile")[0];File file = wrapper.getFiles("imgFile")[0];

作者：itmyhome

源码：下载