做個(gè)總結(jié)
linux服務(wù)器上做負(fù)載均衡
自己準(zhǔn)備的:linux服務(wù)器(45.78.20.168),jdk1.7,nginx,redis,tomcat7兩個(gè),部署的項(xiàng)目;
1:jdk1.7安裝,兩個(gè)tomcat分別端口8080,8081;部署相同的項(xiàng)目;啟動(dòng);
http://45.78.20.168:8080/redis3.2/getRedis.action2:安裝nginx,添加負(fù)載的配置,安裝目錄下找
/etc/nginx/conf.d/default.conf文件(或/etc/nginx/nginx.conf);策略設(shè)置為默認(rèn)輪詢;
upstream www.nimenhaihaoma.com {
server 45.78.20.168:8080;
server 45.78.20.168:8081;
}
server{
listen 80;
server_name www.nimenhaihaoma.com;
location / {
proxy_pass http://www.nimenhaihaoma.com;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
3:配置session共享,方式很多,這里用的redis的session共享(兼容jdk版本至少1.7):
tomcat的lib包加
commons-pool2-2.0.jar,jedis-2.5.2.jar,tomcat-redis-session-manager1.2.jar;
tomcat配置文件context.xml,在標(biāo)簽<Context>內(nèi)添加配置:
<Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />
<Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager" host="localhost" port="6379" database="0" maxInactiveInterval="60" />
4:項(xiàng)目里面區(qū)分session的代碼:
(1):放session的接口(執(zhí)行一次);
(2):取session數(shù)據(jù)(不斷刷新),看tomcat打印信息;
5:效果,
http://www.nimenhaihaoma.com/redis3.2/getRedis.action (狂刷session值相同)
項(xiàng)目只是加載spring的幾個(gè)定時(shí)任務(wù)，啟動(dòng)服務(wù)一直循環(huán)加載spring文件，問(wèn)題的根節(jié)點(diǎn)：定時(shí)器類里面的service對(duì)象采取配置的方式注入，而這個(gè)定時(shí)器類的構(gòu)造讓我給加上了:
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext*.xml");
myServiceImpl = context.getBean("XXXService");
加上這段為了方便測(cè)試，在該類里寫(xiě)main方法測(cè)試執(zhí)行，把調(diào)用寫(xiě)到構(gòu)造里；，spring定時(shí)器配置好時(shí)間后，此處構(gòu)造忘了去掉；導(dǎo)致啟動(dòng)tomcat服務(wù)一直在加載spring注入文件；
同理，spring注入的方式，在action里同樣有這樣的效果，構(gòu)造方法一定注意；
是在build.xml編譯的時(shí)候,包里有兩個(gè)類名一樣的java文件,我只是做了個(gè)備份,忘了改文件后綴,備份的文件也編譯了,所以報(bào)的這個(gè)錯(cuò)
1，添加索引文件中的一條新的索引
Question addQ = new Question();//新添加的一條數(shù)據(jù),對(duì)象id在索引文件中沒(méi)有
addQ.setId("999999999");
addQ.setQuestionname("新添加的一條數(shù)據(jù)名稱");
Analyzer sa = new SmartChineseAnalyzer(Version.LUCENE_40);
IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_40, sa);
iwc.setOpenMode(OpenMode.APPEND);
IndexWriter writer = null;
try {
Directory dir1 = FSDirectory.open(new File("F:\\temp"));
writer = new IndexWriter(dir1, iwc);
FieldType ft = new FieldType();
ft.setIndexed(true);
ft.setStored(true);
ft.setTokenized(true);
FieldType ft2 = new FieldType();
ft2.setIndexed(true);
ft2.setStored(true);
ft2.setTokenized(false);
Document doc = new Document();
doc.add(new Field("id", addQ.getId(), ft2));
doc.add(new Field("questionname", addQ.getQuestionname(), ft));
writer.addDocument(doc);
writer.close();
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (LockObtainFailedException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally{
try {
if(writer!=null){
writer.close();
}
if(sa!=null){
sa.close();
}
} catch (CorruptIndexException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}執(zhí)行完程序后，索引文件中已經(jīng)添加新的索引數(shù)據(jù)。2，刪除索引文件中的一條新的索引
Question delQ = new Question();//索引文件中有的一條數(shù)據(jù)，根據(jù)對(duì)象id刪 delQ.setId("1111111"); delQ.setQuestionname("要?jiǎng)h除的一條數(shù)據(jù)"); IndexWriter writer = null;
Analyzer sa = new SmartChineseAnalyzer(Version.LUCENE_40);
IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_40, sa);
Directory dir1 = null;
try {
dir1 = FSDirectory.open(new File("F:\\temp"));
writer = new IndexWriter(dir1, iwc);
Term term = new Term("id", delQ.getId());
writer.deleteDocuments(term);
writer.commit();
writer.close();
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (LockObtainFailedException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (writer != null) {
writer.close();
sa.close();
}
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
System.out.println("索引刪除完成");
3，更新索引文件中的一條索引
更新索引文件中的一條索引的理念是：先找到這條索引刪除，然后再添加這條更新后的索引
IndexReader reader = DirectoryReader.open(FSDirectory.open(new File("F:\\temp")));// 打開(kāi)索引
IndexSearcher searcher = new IndexSearcher(reader);
Analyzer analyzer = new SmartChineseAnalyzer(Version.LUCENE_40);
String[] fields = { "questionname","id" };
Occur[] occurs = new Occur[] { Occur.SHOULD,Occur.SHOULD };
Query query = MultiFieldQueryParser.parse(Version.LUCENE_40, "測(cè)試 的", fields,
occurs, analyzer);
TopDocs result = searcher.search(query, searcher.getIndexReader()
.maxDoc());
ScoreDoc[] hits = result.scoreDocs;
List<Document> list = new ArrayList<Document>();
for (int i = 0; i <hits.length; i++) {
Document doc = searcher.doc(hits[i].doc);
list.add(doc);
}
System.out.println("搜索list的長(zhǎng)度\t→→→→\t"+list.size());
for (Document document : list) {
System.out.println(document.getField("questionname"));
}
analyzer.close();
注：紅色字體是輸入的檢索條件，多個(gè)用空格隔開(kāi)，找到的結(jié)果先匹配同時(shí)符合多個(gè)的結(jié)果，結(jié)果只是拿過(guò)來(lái)的document一個(gè)list集合，具體結(jié)果再解析就行了。
結(jié)果如圖：
Connection conn = null;
Statement stat = null;
ResultSet rs = null;
Analyzer sa = new SmartChineseAnalyzer(Version.LUCENE_40);
IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_40, sa);
iwc.setOpenMode(OpenMode.CREATE);
Directory dir1 = FSDirectory.open(new File("F:\\temp"));
IndexWriter writer = new IndexWriter(dir1, iwc);
int numIndexed = -1;
FieldType ft = new FieldType();
ft.setIndexed(true);
ft.setStored(true);
ft.setTokenized(true);
FieldType ft2 = new FieldType();
ft2.setIndexed(true);
ft2.setStored(true);
ft2.setTokenized(false);
Class.forName("com.mysql.jdbc.Driver");
conn = (Connection) DriverManager.getConnection(
"jdbc:mysql:///question", "root", "root");
stat = (Statement) conn.createStatement();
rs = stat.executeQuery("select id,questionname from question");
List<String> list = new ArrayList<String>();
while (rs.next()) {
String id = rs.getString("questionname");
String questionname = rs.getString("questionname");
list.add(id);
list.add(questionname);
}
rs.close();
stat.close();
conn.close();
for (String string : list) {
Document doc = new Document();
doc.add(new Field("questionname", string, ft2));
writer.addDocument(doc);
}
numIndexed = writer.maxDoc();
writer.close();
執(zhí)行完這段程序f盤(pán)多一個(gè)文件夾temp，里面就是創(chuàng)建好的索引文件了，然后進(jìn)行根據(jù)索引文件查詢
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=GBK" />
<title></title>
<script type="text/javascript" src="jquery-1.8.2.js"></script>
<script type="text/javascript">
$(document).mousemove(function(e) {
var innerHeight = window.innerHeight;
if (e.pageY > innerHeight) {
$("#topDiv").css("display", "block");
}
if (e.pageY < innerHeight) {
$("#topDiv").css("display", "none");
}
});
$("#topIcon").mouseover(function() {
$("#topIcon").css("text-decoration", "none");
$("#topIcon").children("i").removeClass();
$("#topIcon").children("i").addClass("icon-chevron-up");
});
$("#topIcon").mouseout(function() {
$("#topIcon").children("i").removeClass();
$("#topIcon").children("i").addClass("icon-arrow-up");
});
</script>
</head>
<body id="bodyId">
style="position: fixed;right: 60px;bottom: 60px;display: none">
<a id="topIcon" href="#bodyId" style="background-color: #aaaaaa"><span
style="text-align: justify;display: block;text-decoration: none;width: 14px;background-color: #cccccc">回到頂端</span>
</a>
</div>
<h1>O(∩_∩)O哈哈~</h1>
<h2>(*^__^*) 嘻嘻……</h2>
<h3>O(∩_∩)O~</h3>
<h4>\(^o^)/~</h4>
<h5>$_$</h5>
<h6>o(╯□╰)o</h6>
<h1>O(∩_∩)O哈哈~</h1>
<h2>(*^__^*) 嘻嘻……</h2>
<h3>O(∩_∩)O~</h3>
<h4>\(^o^)/~</h4>
<h5>$_$</h5>
<h6>o(╯□╰)o</h6>
<h1>O(∩_∩)O哈哈~</h1>
<h2>(*^__^*) 嘻嘻……</h2>
<h3>O(∩_∩)O~</h3>
<h4>\(^o^)/~</h4>
<h5>$_$</h5>
<h6>o(╯□╰)o</h6>
<h1>O(∩_∩)O哈哈~</h1>
<h2>(*^__^*) 嘻嘻……</h2>
<h3>O(∩_∩)O~</h3>
<h4>\(^o^)/~</h4>
<h5>$_$</h5>
<h6>o(╯□╰)o</h6>
<h1>O(∩_∩)O哈哈~</h1>
<h2>(*^__^*) 嘻嘻……</h2>
<h3>O(∩_∩)O~</h3>
<h4>\(^o^)/~</h4>
<h5>$_$</h5>
<h6>o(╯□╰)o</h6>
<h1>O(∩_∩)O哈哈~</h1>
<h2>(*^__^*) 嘻嘻……</h2>
<h3>O(∩_∩)O~</h3>
<h4>\(^o^)/~</h4>
<h5>$_$</h5>
<h6>o(╯□╰)o</h6>
<h1>O(∩_∩)O哈哈~</h1>
<h2>(*^__^*) 嘻嘻……</h2>
<h3>O(∩_∩)O~</h3>
<h4>\(^o^)/~</h4>
<h5>$_$</h5>
<h6>o(╯□╰)o</h6>
<h1>O(∩_∩)O哈哈~</h1>
<h2>(*^__^*) 嘻嘻……</h2>
<h3>O(∩_∩)O~</h3>
<h4>\(^o^)/~</h4>
<h5>$_$</h5>
<h6>o(╯□╰)o</h6>
</body>
</html>
求單一登陸和單點(diǎn)登陸的思路及核心代碼？？？
html中中文正則表達(dá)式不對(duì)的問(wèn)題 中文的正則表達(dá)式：var reg = /^[\u4e00-\u9fa5]$/;(一個(gè)中文字符)
放在html中可能出現(xiàn)的問(wèn)題有：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
<title></title>
</head>
<body>
<script type="text/javascript">
var reg0 = /^[\u4e00-\u9fa5]$/;
alert(reg0.test("看"));
</script>
</body>
</html>
本頁(yè)編碼為UTF-8時(shí)出現(xiàn)的結(jié)果可能是錯(cuò)誤的，
所以出現(xiàn)此類情況，編碼格式改為gb2312(紅色標(biāo)注的編碼改為gb2312)
簡(jiǎn)單的代碼:
public static void main(String[] args) {
try {
File allfile = new File("f:\\excel\\total.xlsx");
File file2 = new File("f:\\excel\\xxxxxx.xlsx");
XSSFWorkbook h = new XSSFWorkbook(new FileInputStream(allfile));
XSSFSheet x = h.getSheetAt(0);
XSSFWorkbook hssfWorkbook = new XSSFWorkbook(new FileInputStream(file2));
XSSFSheet hssfSheet = hssfWorkbook.getSheetAt(0);
int ii = hssfSheet.getLastRowNum();//讀取的表格行數(shù)
System.out.println(ii);
FileOutputStream out_ = new FileOutputStream(allfile);
for (int i = 0; i < ii; i++) {
XSSFRow lastRow = x.createRow(x.getLastRowNum()+1);
XSSFRow xssfRow = hssfSheet.getRow(i);
XSSFCell xssfCell0 = xssfRow.getCell(0);
CellStyle cellStyle0 = xssfCell0.getCellStyle();
CellStyle newStyle0 = h.createCellStyle();
newStyle0.cloneStyleFrom(cellStyle0);
XSSFCell xssfCell0_ = lastRow.createCell(0);
xssfCell0_.setCellStyle(newStyle0);
xssfCell0_.setCellValue(xssfCell0.toString());
XSSFCell xssfCell1 = xssfRow.getCell(1);
CellStyle cellStyle1 = xssfCell1.getCellStyle();
CellStyle newStyle1 = h.createCellStyle();
newStyle1.cloneStyleFrom(cellStyle1);
XSSFCell xssfCell1_ = lastRow.createCell(1);
xssfCell1_.setCellStyle(newStyle1);
xssfCell1_.setCellValue(xssfCell1.toString());
XSSFCell xssfCell2 = xssfRow.getCell(2);
CellStyle cellStyle2 = xssfCell2.getCellStyle();
CellStyle newStyle2 = h.createCellStyle();
newStyle2.cloneStyleFrom(cellStyle2);
XSSFCell xssfCell2_ = lastRow.createCell(2);
xssfCell2_.setCellStyle(newStyle2);
xssfCell2_.setCellValue(xssfCell2.toString());
XSSFCell xssfCell3 = xssfRow.getCell(3);
CellStyle cellStyle3 = xssfCell3.getCellStyle();
CellStyle newStyle3 = h.createCellStyle();
newStyle3.cloneStyleFrom(cellStyle3);
XSSFCell xssfCell3_ = lastRow.createCell(3);
xssfCell3_.setCellStyle(newStyle3);
xssfCell3_.setCellValue(xssfCell3.toString());
XSSFCell xssfCell4 = xssfRow.getCell(4);
CellStyle cellStyle4 = xssfCell4.getCellStyle();
CellStyle newStyle4 = h.createCellStyle();
newStyle4.cloneStyleFrom(cellStyle4);
XSSFCell xssfCell4_ = lastRow.createCell(4);
xssfCell4_.setCellStyle(newStyle4);
xssfCell4_.setCellValue(xssfCell4.toString().toString());
}
h.write(out_);
out_.flush();
out_.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=GBK" />
<title></title>
</head>
<body>
<h1>提示離開(kāi)當(dāng)前頁(yè)面的js代碼</h1>
<a >百度鏈接</a>
<script type="text/javascript">
if (window != top) {
top.location.href = "login.action";
} else {
if (window.Event) {
window.onbeforeunload = function(event) {
return "你是否要離開(kāi)此頁(yè)面,離開(kāi)此頁(yè)面信息將不被保存!";
};
} else {
window.onbeforeunload = function() {
return "你是否要離開(kāi)此頁(yè)面,離開(kāi)此頁(yè)面信息將不被保存!";
};
}
}
</script>
</body>
</html>
Ajax同步加載數(shù)據(jù)。發(fā)送請(qǐng)求時(shí)鎖住瀏覽器。需要鎖定用戶交互操作時(shí)使用同步方式。
$.ajax({
url: "some.php",
async: false
})
String data_ = "2013-07-01 15:47:34";SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = simpleDateFormat.parse(data_);
格式y(tǒng)yyy-MM-dd HH:mm:ss是24小時(shí)制，yyyy-MM-dd hh:mm:ss是12小時(shí)制。