ajaxfileupload、jqGrid、linux命令、文件上传带进度显示、backToTop插件、发送带附件的EmailService

1、ajaxfileupload:ajax文件上传

页面：

//文件上传
function fileUpload(){
$.ajaxFileUpload({
url:"/tools/toolServlet?type=estUpload&email=" + email,
secureuri:false,
fileElementId:'file1',//注：file id须用单引号引起来
dataType: "json",
success:function(responseText,state){
}
});
}

servlet:

private void estUploadFile(HttpServletRequest request,
HttpServletResponse response) {
pDataId = "";
long dataId = new Date().getTime();
String email = request.getParameter("email");
response.setContentType("text/html; charset=UTF-8");
String basePath = estPath + "/" + dataId;
//生成dataId目录
String newPath = estPath + "/" + dataId;
createDir(newPath);
//生成data目录
newPath = estPath + "/" + dataId + "/data";
createDir(newPath);
//生成data目录
newPath = estPath + "/" + dataId + "/result";
createDir(newPath);
//创建存放图片的目录
newPath = this.getServletContext().getRealPath("/upload/est/" + dataId);
createDir(newPath);
// 查输入请求是否为multipart表单数据
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
if (isMultipart) {
try {
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setSizeThreshold(10240);// 设置文件上传用于临时存放文件的内存大小，多于的部分将临时存放在硬盘
factory.setRepository(new File(this.getServletContext()
.getRealPath("/temp")));
ServletFileUpload upload = new ServletFileUpload(factory);
//监听文件上传进度
upload.setProgressListener(new UploadProgressListener(request));

upload.setSizeMax(2560 * 1024 * 1024);
// 保存表单中所有请求 表单域
List<FileItem> items = null;
try {
items = upload.parseRequest(request);
} catch (FileUploadException e) {
if (e instanceof SizeLimitExceededException) {
e.printStackTrace();
return;
}
}
if (items != null) {
for (FileItem item : items) {
if (item.isFormField()) {
String name = item.getFieldName();
String value = item.getString();
System.out.println("表单域名为:" + name + "表单域值为:"
+ value);
} else {
// 获取文件名及路径
String fileName = item.getName();
if (fileName != null) {
File fullFile = new File(fileName);
if (!fullFile.exists()) {
File fileOnServer = new File(basePath + "/data",
fullFile.getName());
item.write(fileOnServer);
}
}
}
}
pDataId = String.valueOf(dataId);
return;
}
} catch (FileUploadException e) {
e.printStackTrace();
return;
} catch (Exception e) {
e.printStackTrace();
return;
}
} else {
System.out.println("the enctype must be multipart/form-data");
return;
}
}

2、jqGrid：主要是学会了双击事件，和添加自定义html元素，如按钮等

//加载表格
function refreshTable(){
$("#accountGroupTable").jqGrid({
url:"account-group",
datatype:'json',
rownumbers:true,
rownumWidth:30,
colNames:['ID','remark','账户组名称','账户组描述','创建时间','操作'],
colModel:[
{name:'accountGroupId',index:'accountGroupId',hidden:true,align:'left'},
{name:'remark',index:'remark',hidden:true,align:'left'},
{name:'accountGroupName',index:'account_group_name', 100,align:'left'},
{name:'remark',index:'remark',align:'left', 100,formatter:function(cellvalue,options,rowObject){
if(cellvalue.length>15){
return cellvalue.substring(0,15)+"…";
}else{
return cellvalue;
}
}},
{name:'createDate',index:'create_date', 100,align:'left'},
{name:'action2',index:'action2',align:'center',50,sortable:false,formatter:function(cellvalue, options, rowObject){//添加html元素
var del="<button onclick=\"delAccountGroup('"+options.rowId+"')\">删除</button>";
return del;
}}
],
ondblClickRow : function(rowid, iRow, iCol, e) {//双击事件
updateAccountGroup(rowid);
},
prmNames:{
page:"page.currentPage",
rows:"page.pageSize"
},
rowList:[10,20,30,50],
pager:'#pager',
viewrecords:true,
rowNum : 10,
sortable:true,
sortname:'account_group_name', //从后台初始加载数据时按照哪个字段排序
sortorder:'desc',
jsonReader:{
root:'datas',//json 中代表实际模型数据的入口
cell:'',
page:"page.currentPage",//json 中代表当前页码的数据
total:"page.totalPage",//json 中代表页码总数的数据
records:"page.rowCount",//json 中代表数据行总数的数据
repeatitems:false
},
shrinkToFit:true,//表格分配
autoScroll: true,
hidegrid:false,
hiddengrid:false,
autofalse,
height:300,
600,
gridComplete: function(){
$(document).find("th:first").html("序号");
}
});
}

3、linux命令：主要是学会了使用linux命令上传文件，以及关闭、重启tomcat

//上传文件使用scp,如：

scp tools.war root@10.192.22.119:/usr/local/apache-tomcat-6.0.29/webapps

//关闭、重启tomcat

ssh root@ip地址

/usr/local/apache-tomcat-6.0.29/bin/shutdown.sh

/usr/local/apache-tomcat-6.0.29/bin/startup.sh

4、文件上传带进度显示

public class UploadProgressListener implements ProgressListener {
private HttpServletRequest request;
private DecimalFormat df = new DecimalFormat("#00.0");
public UploadProgressListener(HttpServletRequest request){
this.request = request;
}

@Override
public void update(long bytesRead, long bytesTotal, int items) {
double percent= (double)bytesRead*100/(double)bytesTotal;
request.getSession().setAttribute("uploadPercent", df.format(percent));
}

}

servlet:

ServletFileUpload upload = new ServletFileUpload(factory);
//监听文件上传进度
upload.setProgressListener(new UploadProgressListener(request));

......

页面：

var setinterval = setInterval("getUploadMeter()",200);

//读取文件上传进度
function getUploadMeter(){
$.get("/tools/toolServlet?type=readUploadPercent","",function(data){
var dataArray = data.split(",");
$("#file1").parent().parent().find(".help-inline").html("已上传" + dataArray[0] + "%");
//上传完成
if(dataArray[0]=="100"){
clearInterval(setinterval);
}
});
}

servlet:

//读取文件上传进度
private void readUploadPercent(HttpServletRequest request,
HttpServletResponse response){
HttpSession session = request.getSession();
Object upload_percentage = session.getAttribute("uploadPercent");
if(upload_percentage==null) return;
if("0".equals(upload_percentage.toString())) return;
PrintWriter out;
try {
int endIndex = upload_percentage.toString().indexOf(".");
out = response.getWriter();
String percent = upload_percentage.toString().substring(0, endIndex);
out.write(percent+","+pDataId);
out.flush();
} catch (IOException e) {
e.printStackTrace();
}
}

5、backToTop插件

6、发送带附件的EmailService：

public class EmailAttachService {
private static String host = "smtp.163.com";
private static String username = "*@163.com";
private static String password = "*****";
private static String mailSubject = "";
public static Vector vfile = new Vector();
//添加附件
public static void addAttachemnt(String fPath){
vfile.add(fPath);
}
//发送邮件
public static void sendMail(String emailTo,String msg) {
// vfile 附件文件集合
try {
Properties props = new Properties();// 获取系统环境
Authenticator auth = new EmailAuthenticator(username, password);// 进行邮件服务用户认证
props.put("mail.smtp.host", host);
props.put("mail.smtp.auth", "true");

Session session = Session.getDefaultInstance(props, auth);
// 设置session,和邮件服务器进行通讯
MimeMessage message = new MimeMessage(session);
// 设置邮件发送者的地址
message.setFrom(new InternetAddress(username));
// 设置邮件接收的地址
message.addRecipient(Message.RecipientType.TO, new InternetAddress(emailTo));
// 设置邮件主题
message.setSubject(mailSubject);
// 构造Multipart
Multipart mp = new MimeMultipart();
// 向Multipart添加正文
MimeBodyPart content = new MimeBodyPart();
content.setContent(msg, "text/html;charset=gb2312");
mp.addBodyPart(content);
// 向Multipart添加附件
Enumeration efile = vfile.elements();
while(efile.hasMoreElements()){
MimeBodyPart fattach = new MimeBodyPart();
String fName = efile.nextElement().toString();
FileDataSource fds = new FileDataSource(fName);
fattach.setDataHandler(new DataHandler(fds));
fattach.setFileName(MimeUtility.encodeWord(fds.getName(), "GB2312",null));
mp.addBodyPart(fattach);
}
vfile.removeAllElements();
message.setContent(mp);
// 设置邮件发送时期
message.setSentDate(new Date());
message.saveChanges();
//发送邮件
Transport.send(message);
} catch (Exception e) {
e.printStackTrace();
}
}