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1.优化代码结构，抽象预览接口服务

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2.新增更多图片预览格式支持
This commit is contained in:
kl
2018-01-17 17:51:53 +08:00
parent 78de36964d
commit 2f86701eea
33 changed files with 447 additions and 2631 deletions
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129
jodconverter-web/src/main/java/cn/keking/web/controller/OnlinePreviewController.java
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@@ -1,20 +1,16 @@
package cn.keking.web.controller;
import com.google.common.collect.Lists;
import cn.keking.param.ReturnResponse;
import cn.keking.utils.*;
import cn.keking.service.FilePreview;
import cn.keking.service.FilePreviewFactory;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
@@ -31,19 +27,9 @@ import java.util.Map;
*/
@Controller
public class OnlinePreviewController {
@Autowired
private OfficeToPdf officeToPdf;
@Autowired
FileUtils fileUtils;
@Autowired
DownloadUtils downloadUtils;
@Autowired
ZipReader zipReader;
@Autowired
SimTextUtil simTextUtil;
@Value("${file.dir}")
String fileDir;
@Autowired
FilePreviewFactory previewFactory;
/**
* @param url
@@ -51,100 +37,10 @@ public class OnlinePreviewController {
* @return
*/
@RequestMapping(value = "onlinePreview", method = RequestMethod.GET)
public String onlinePreview(String url, Model model, HttpServletRequest req) throws UnsupportedEncodingException {
// 路径转码
String decodedUrl = URLDecoder.decode(url, "utf-8");
String type = fileUtils.typeFromUrl(url);
String suffix = suffixFromUrl(url);
// 抽取文件并返回文件列表
String fileName = fileUtils.getFileNameFromURL(decodedUrl);
model.addAttribute("fileType", suffix);
if (type.equalsIgnoreCase("picture")) {
List imgUrls = Lists.newArrayList(url);
try{
String fileKey = req.getParameter("fileKey");
imgUrls.clear();
imgUrls.addAll(fileUtils.getRedisImgUrls(fileKey));
}catch (Exception e){
imgUrls = Lists.newArrayList(url);
}
model.addAttribute("imgurls", imgUrls);
model.addAttribute("currentUrl",url);
return "picture";
} else if (type.equalsIgnoreCase("simText")) {
ReturnResponse<String> response = simTextUtil.readSimText(decodedUrl, fileName);
if (0 != response.getCode()) {
model.addAttribute("msg", response.getMsg());
return "fileNotSupported";
}
model.addAttribute("ordinaryUrl", response.getMsg());
return "txt";
} else if (type.equalsIgnoreCase("pdf")) {
model.addAttribute("pdfUrl", url);
return "pdf";
} else if (type.equalsIgnoreCase("compress")) {
String fileTree = null;
// 判断文件名是否存在(redis缓存读取)
if (!StringUtils.hasText(fileUtils.getConvertedFile(fileName))) {
ReturnResponse<String> response = downloadUtils.downLoad(decodedUrl, suffix, fileName);
if (0 != response.getCode()) {
model.addAttribute("msg", response.getMsg());
return "fileNotSupported";
}
String filePath = response.getContent();
if ("zip".equalsIgnoreCase(suffix) || "jar".equalsIgnoreCase(suffix) || "gzip".equalsIgnoreCase(suffix)) {
fileTree = zipReader.readZipFile(filePath, fileName);
} else if ("rar".equalsIgnoreCase(suffix)) {
fileTree = zipReader.unRar(filePath, fileName);
}
fileUtils.addConvertedFile(fileName, fileTree);
} else {
fileTree = fileUtils.getConvertedFile(fileName);
}
if (null != fileTree) {
model.addAttribute("fileTree", fileTree);
return "compress";
} else {
model.addAttribute("msg", "压缩文件类型不受支持，尝试在压缩的时候选择RAR4格式");
return "fileNotSupported";
}
} else if ("office".equalsIgnoreCase(type)) {
boolean isHtml = suffix.equalsIgnoreCase("xls")
|| suffix.equalsIgnoreCase("xlsx");
String pdfName = fileName.substring(0, fileName.lastIndexOf(".") + 1) + (isHtml ? "html" : "pdf");
// 判断之前是否已转换过，如果转换过，直接返回，否则执行转换
if (!fileUtils.listConvertedFiles().containsKey(pdfName)) {
String filePath = fileDir + fileName;
if (!new File(filePath).exists()) {
ReturnResponse<String> response = downloadUtils.downLoad(decodedUrl, suffix, null);
if (0 != response.getCode()) {
model.addAttribute("msg", response.getMsg());
return "fileNotSupported";
}
filePath = response.getContent();
}
String outFilePath = fileDir + pdfName;
if (StringUtils.hasText(outFilePath)) {
officeToPdf.openOfficeToPDF(filePath, outFilePath);
File f = new File(filePath);
if (f.exists()) {
f.delete();
}
if (isHtml) {
// 对转换后的文件进行操作(改变编码方式)
fileUtils.doActionConvertedFile(outFilePath);
}
// 加入缓存
fileUtils.addConvertedFile(pdfName, fileUtils.getRelativePath(outFilePath));
}
}
model.addAttribute("pdfUrl", pdfName);
return isHtml ? "html" : "pdf";
} else {
model.addAttribute("msg", "系统还不支持该格式文件的在线预览，" +
"如有需要请按下方显示的邮箱地址联系系统维护人员");
return "fileNotSupported";
}
public String onlinePreview(String url, Model model, HttpServletRequest req) {
req.setAttribute("fileKey",req.getParameter("fileKey"));
FilePreview filePreview=previewFactory.get(url);
return filePreview.filePreviewHandle(url,model);
}
/**
@@ -167,13 +63,6 @@ public class OnlinePreviewController {
}
private String suffixFromUrl(String url) {
String nonPramStr = url.substring(0, url.indexOf("?") != -1 ? url.indexOf("?") : url.length());
String fileName = nonPramStr.substring(nonPramStr.lastIndexOf("/") + 1);
String fileType = fileName.substring(fileName.lastIndexOf(".") + 1);
return fileType;
}
/**
* 根据url获取文件内容
* 当pdfjs读取存在跨域问题的文件时将通过此接口读取