xheditor-文件上传-java-支…
2014-12-23 00:21
218 查看
原文地址:xheditor-文件上传-java-支持html5-application/octet-stream作者:山水佳鱼
直接上主要代码
UploadFileServlet.java
=====================================================================
package
com.XXX.xheditor.servlet;
import
java.io.BufferedOutputStream;
import
java.io.File;
import
java.io.FileOutputStream;
import
java.io.IOException;
import
java.io.OutputStream;
import
java.io.PrintWriter;
import
java.io.Serializable;
import
java.text.SimpleDateFormat;
import
java.util.Date;
import
java.util.HashMap;
import
java.util.Iterator;
import
java.util.List;
import
java.util.Map;
import
java.util.UUID;
import
javax.servlet.ServletException;
import
javax.servlet.http.HttpServlet;
import
javax.servlet.http.HttpServletRequest;
import
javax.servlet.http.HttpServletResponse;
import
org.apache.commons.fileupload.DiskFileUpload;
import
org.apache.commons.fileupload.FileItem;
import
org.apache.commons.lang.StringUtils;
//
xhEditor文件上传的Java - Servlet实现.
// @
author WeiMiao
// @
refer to easinchu
// @
version 2
// @
description 增加html5上传功能的支持
public class
UploadFileServlet extends HttpServlet {
private static final long serialVersionUID =
1541334866883495283L;
private static String baseDir =
"/UploadFile/"; // 上传文件存储目录
private static String fileExt =
"jpg,jpeg,bmp,gif,png";
private static Long maxSize = 0l;
private static String dirType = "1";
// 0:不建目录
1:按天存入目录 2:按月存入目录 3:按扩展名存目录 建议使用按天存
public void init() throws ServletException
{
baseDir =
this.getInitParameter("baseDir"); //获取web.xml中servlet的配置文件目录参数
if
(StringUtils.isEmpty(baseDir)) baseDir = "/UploadFile/";
//获取文件上传存储的相当路径
String realBaseDir =
this.getServletConfig().getServletContext().getRealPath(baseDir);
File baseFile = new File(realBaseDir);
if (!baseFile.exists()) {
baseFile.mkdir();
}
fileExt =
this.getInitParameter("fileExt"); //获取文件类型参数
if (StringUtils.isEmpty(fileExt)) fileExt =
"jpg,jpeg,gif,bmp,png";
String maxSize_str =
this.getInitParameter("maxSize"); //获取文件大小参数
if (StringUtils.isNotEmpty(maxSize_str))
{
maxSize = new Long(maxSize_str);
} else {
maxSize =
Long.valueOf("5242880"); //5M
}
dirType =
this.getInitParameter("dirType"); //获取文件目录类型参数
if (StringUtils.isEmpty(dirType)) dirType =
"1";
if (",0,1,2,3,".indexOf("," + dirType + ",")
< 0) dirType = "1";
}
// 上传文件数据处理过程
@SuppressWarnings( { "unchecked" })
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;
charset=UTF-8");
response.setHeader("Cache-Control",
"no-cache");
String err = "";
String newFileName = "";
if
("application/octet-stream".equals(request.getContentType()))
{ //HTML 5
上传
try {
String dispoString =
request.getHeader("Content-Disposition");
int iFindStart =
dispoString.indexOf("name="")+6;
int iFindEnd = dispoString.indexOf(""",
iFindStart);
iFindStart =
dispoString.indexOf("filename="")+10;
iFindEnd = dispoString.indexOf(""",
iFindStart);
String sFileName =
dispoString.substring(iFindStart, iFindEnd);
int i = request.getContentLength();
byte buffer[] = new byte[i];
int j = 0;
while(j
< i) { //获取表单的上传文件
int k = request.getInputStream().read(buffer, j,
i-j);
j += k;
}
if (buffer.length == 0)
{ //文件是否为空
printInfo(response, "上传文件不能为空", "");
return;
}
if (maxSize
> 0 && buffer.length
> maxSize) { //检查文件大小
printInfo(response, "上传文件的大小超出限制",
"");
return;
}
String filepathString =
getSaveFilePath(sFileName, response);
if
("不允许上传此类型的文件".equals(filepathString)) return; //检查文件类型
OutputStream out=new
BufferedOutputStream(new FileOutputStream(this.getServletConfig().getServletContext().getRealPath("")
+ filepathString,true));
out.write(buffer);
out.close();
newFileName = request.getContextPath() +
filepathString;
} catch (Exception ex) {
System.out.println(ex.getMessage());
newFileName = "";
err = "错误: " + ex.getMessage();
}
} else {
DiskFileUpload upload = new
DiskFileUpload();
try {
List<FileItem>
items = upload.parseRequest(request);
Map<String,
Serializable> fields = new
HashMap<String,
Serializable>();
Iterator<FileItem>
iter = items.iterator();
while (iter.hasNext()) {
FileItem item = (FileItem)
iter.next();
if (item.isFormField())
fields.put(item.getFieldName(),
item.getString());
else
fields.put(item.getFieldName(), item);
}
FileItem uploadFile =
(FileItem) fields.get("filedata"); //获取表单的上传文件
String fileNameLong =
uploadFile.getName(); //获取文件上传路径名称
if
(uploadFile.getSize() == 0) { //文件是否为空
printInfo(response, "上传文件不能为空", "");
return;
}
if (maxSize
> 0 &&
uploadFile.getSize() > maxSize) { //检查文件大小
printInfo(response, "上传文件的大小超出限制",
"");
return;
}
String filepathString =
getSaveFilePath(fileNam
d71c
eLong, response);
if
("不允许上传此类型的文件".equals(filepathString)) return; //检查文件类型
File savefile = new
File(this.getServletConfig().getServletContext().getRealPath("") +
filepathString);
uploadFile.write(savefile);
//存储上传文件
newFileName = request.getContextPath() +
filepathString;
} catch (Exception ex) {
System.out.println(ex.getMessage());
newFileName = "";
err = "错误: " + ex.getMessage();
}
}
printInfo(response, err, newFileName);
}
public String getSaveFilePath(String sFileName,
HttpServletResponse response) throws IOException {
String extensionName =
sFileName.substring(sFileName.lastIndexOf(".") + 1);
//获取文件扩展名
if (("," +
fileExt.toLowerCase() + ",").indexOf("," +
extensionName.toLowerCase() + ",") < 0) {
//检查文件类型
printInfo(response, "不允许上传此类型的文件",
"");
return "不允许上传此类型的文件";
}
String fileFolder =
""; // 0:不建目录, 1:按天存入目录,
2:按月存入目录, 3:按扩展名存目录.建议使用按天存。
if (dirType.equalsIgnoreCase("1")) fileFolder =
new SimpleDateFormat("yyyyMMdd").format(new Date());
if (dirType.equalsIgnoreCase("2")) fileFolder =
new SimpleDateFormat("yyyyMM").format(new Date());
if (dirType.equalsIgnoreCase("3")) fileFolder =
extensionName.toLowerCase();
String saveDirPath =
baseDir + fileFolder + "/"; //文件存储的相对路径
String saveFilePath =
this.getServletConfig().getServletContext().getRealPath("") +
saveDirPath; //文件存储在容器中的绝对路径
File fileDir = new
File(saveFilePath); //构建文件目录以及目录文件
if (!fileDir.exists()) {
fileDir.mkdirs();
}
String filename =
UUID.randomUUID().toString(); //重命名文件
return saveDirPath + filename + "." +
extensionName;
}
// 使用I/O流输出 json格式的数据
public void printInfo(HttpServletResponse
response, String err, String newFileName) throws IOException
{
response.setContentType("text/plain");
response.setCharacterEncoding("UTF-8");
PrintWriter out =
response.getWriter();
out.println("{"err":"" + err + "","msg":""
+ newFileName + ""}");
out.flush();
out.close();
}
}
直接上主要代码
UploadFileServlet.java
=====================================================================
package
com.XXX.xheditor.servlet;
import
java.io.BufferedOutputStream;
import
java.io.File;
import
java.io.FileOutputStream;
import
java.io.IOException;
import
java.io.OutputStream;
import
java.io.PrintWriter;
import
java.io.Serializable;
import
java.text.SimpleDateFormat;
import
java.util.Date;
import
java.util.HashMap;
import
java.util.Iterator;
import
java.util.List;
import
java.util.Map;
import
java.util.UUID;
import
javax.servlet.ServletException;
import
javax.servlet.http.HttpServlet;
import
javax.servlet.http.HttpServletRequest;
import
javax.servlet.http.HttpServletResponse;
import
org.apache.commons.fileupload.DiskFileUpload;
import
org.apache.commons.fileupload.FileItem;
import
org.apache.commons.lang.StringUtils;
//
xhEditor文件上传的Java - Servlet实现.
// @
author WeiMiao
// @
refer to easinchu
// @
version 2
// @
description 增加html5上传功能的支持
public class
UploadFileServlet extends HttpServlet {
private static final long serialVersionUID =
1541334866883495283L;
private static String baseDir =
"/UploadFile/"; // 上传文件存储目录
private static String fileExt =
"jpg,jpeg,bmp,gif,png";
private static Long maxSize = 0l;
private static String dirType = "1";
// 0:不建目录
1:按天存入目录 2:按月存入目录 3:按扩展名存目录 建议使用按天存
public void init() throws ServletException
{
baseDir =
this.getInitParameter("baseDir"); //获取web.xml中servlet的配置文件目录参数
if
(StringUtils.isEmpty(baseDir)) baseDir = "/UploadFile/";
//获取文件上传存储的相当路径
String realBaseDir =
this.getServletConfig().getServletContext().getRealPath(baseDir);
File baseFile = new File(realBaseDir);
if (!baseFile.exists()) {
baseFile.mkdir();
}
fileExt =
this.getInitParameter("fileExt"); //获取文件类型参数
if (StringUtils.isEmpty(fileExt)) fileExt =
"jpg,jpeg,gif,bmp,png";
String maxSize_str =
this.getInitParameter("maxSize"); //获取文件大小参数
if (StringUtils.isNotEmpty(maxSize_str))
{
maxSize = new Long(maxSize_str);
} else {
maxSize =
Long.valueOf("5242880"); //5M
}
dirType =
this.getInitParameter("dirType"); //获取文件目录类型参数
if (StringUtils.isEmpty(dirType)) dirType =
"1";
if (",0,1,2,3,".indexOf("," + dirType + ",")
< 0) dirType = "1";
}
// 上传文件数据处理过程
@SuppressWarnings( { "unchecked" })
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;
charset=UTF-8");
response.setHeader("Cache-Control",
"no-cache");
String err = "";
String newFileName = "";
if
("application/octet-stream".equals(request.getContentType()))
{ //HTML 5
上传
try {
String dispoString =
request.getHeader("Content-Disposition");
int iFindStart =
dispoString.indexOf("name="")+6;
int iFindEnd = dispoString.indexOf(""",
iFindStart);
iFindStart =
dispoString.indexOf("filename="")+10;
iFindEnd = dispoString.indexOf(""",
iFindStart);
String sFileName =
dispoString.substring(iFindStart, iFindEnd);
int i = request.getContentLength();
byte buffer[] = new byte[i];
int j = 0;
while(j
< i) { //获取表单的上传文件
int k = request.getInputStream().read(buffer, j,
i-j);
j += k;
}
if (buffer.length == 0)
{ //文件是否为空
printInfo(response, "上传文件不能为空", "");
return;
}
if (maxSize
> 0 && buffer.length
> maxSize) { //检查文件大小
printInfo(response, "上传文件的大小超出限制",
"");
return;
}
String filepathString =
getSaveFilePath(sFileName, response);
if
("不允许上传此类型的文件".equals(filepathString)) return; //检查文件类型
OutputStream out=new
BufferedOutputStream(new FileOutputStream(this.getServletConfig().getServletContext().getRealPath("")
+ filepathString,true));
out.write(buffer);
out.close();
newFileName = request.getContextPath() +
filepathString;
} catch (Exception ex) {
System.out.println(ex.getMessage());
newFileName = "";
err = "错误: " + ex.getMessage();
}
} else {
DiskFileUpload upload = new
DiskFileUpload();
try {
List<FileItem>
items = upload.parseRequest(request);
Map<String,
Serializable> fields = new
HashMap<String,
Serializable>();
Iterator<FileItem>
iter = items.iterator();
while (iter.hasNext()) {
FileItem item = (FileItem)
iter.next();
if (item.isFormField())
fields.put(item.getFieldName(),
item.getString());
else
fields.put(item.getFieldName(), item);
}
FileItem uploadFile =
(FileItem) fields.get("filedata"); //获取表单的上传文件
String fileNameLong =
uploadFile.getName(); //获取文件上传路径名称
if
(uploadFile.getSize() == 0) { //文件是否为空
printInfo(response, "上传文件不能为空", "");
return;
}
if (maxSize
> 0 &&
uploadFile.getSize() > maxSize) { //检查文件大小
printInfo(response, "上传文件的大小超出限制",
"");
return;
}
String filepathString =
getSaveFilePath(fileNam
d71c
eLong, response);
if
("不允许上传此类型的文件".equals(filepathString)) return; //检查文件类型
File savefile = new
File(this.getServletConfig().getServletContext().getRealPath("") +
filepathString);
uploadFile.write(savefile);
//存储上传文件
newFileName = request.getContextPath() +
filepathString;
} catch (Exception ex) {
System.out.println(ex.getMessage());
newFileName = "";
err = "错误: " + ex.getMessage();
}
}
printInfo(response, err, newFileName);
}
public String getSaveFilePath(String sFileName,
HttpServletResponse response) throws IOException {
String extensionName =
sFileName.substring(sFileName.lastIndexOf(".") + 1);
//获取文件扩展名
if (("," +
fileExt.toLowerCase() + ",").indexOf("," +
extensionName.toLowerCase() + ",") < 0) {
//检查文件类型
printInfo(response, "不允许上传此类型的文件",
"");
return "不允许上传此类型的文件";
}
String fileFolder =
""; // 0:不建目录, 1:按天存入目录,
2:按月存入目录, 3:按扩展名存目录.建议使用按天存。
if (dirType.equalsIgnoreCase("1")) fileFolder =
new SimpleDateFormat("yyyyMMdd").format(new Date());
if (dirType.equalsIgnoreCase("2")) fileFolder =
new SimpleDateFormat("yyyyMM").format(new Date());
if (dirType.equalsIgnoreCase("3")) fileFolder =
extensionName.toLowerCase();
String saveDirPath =
baseDir + fileFolder + "/"; //文件存储的相对路径
String saveFilePath =
this.getServletConfig().getServletContext().getRealPath("") +
saveDirPath; //文件存储在容器中的绝对路径
File fileDir = new
File(saveFilePath); //构建文件目录以及目录文件
if (!fileDir.exists()) {
fileDir.mkdirs();
}
String filename =
UUID.randomUUID().toString(); //重命名文件
return saveDirPath + filename + "." +
extensionName;
}
// 使用I/O流输出 json格式的数据
public void printInfo(HttpServletResponse
response, String err, String newFileName) throws IOException
{
response.setContentType("text/plain");
response.setCharacterEncoding("UTF-8");
PrintWriter out =
response.getWriter();
out.println("{"err":"" + err + "","msg":""
+ newFileName + ""}");
out.flush();
out.close();
}
}
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