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dwr中獲取servletAPI

import uk.ltd.getahead.dwr.WebContext;

import uk.ltd.getahead.dwr.WebContextFactory;

WebContext ctx = WebContextFactory.get(); //DWR Web上下文工廠

HttpServletRequest request = ctx.getHttpServletRequest(); //通過WebContext獲取Request

HttpSession session = ctx.getSession(); //通過WebContext獲取Session

posted @ 2008-11-17 12:55 賀挺閱讀(170) | 評論 (0) | 編輯收藏

子頁面刷新父頁面

index.html

<HTML>

<HEAD>

<TITLE> New Document </TITLE>

</HEAD>

<BODY>

</BODY>

</HTML>

<!--

sub wopen()

window.open "t2.htm","","height=300,width=300"

end sub

//-->

</SCRIPT>

children.html

<HTML>

<HEAD>

<TITLE> New Document </TITLE>

</HEAD>

<BODY>

</BODY>

</HTML>

<!--

sub ref()

window.opener.location.reload()

end sub

//-->

</SCRIPT>

posted @ 2008-11-10 09:21 賀挺閱讀(980) | 評論 (1) | 編輯收藏

關于頁面亂碼的解決使用sun.misc.BASE64Decoder;

1

import sun.misc.BASE64Decoder;
public static String getFromBASE64(String s) {
2

if (s == null) return null;
3

BASE64Decoder decoder = new BASE64Decoder();
4

try {
5

byte[] b = decoder.decodeBuffer(s);
6

return new String(b);
7

} catch (Exception e) {
8

return null;
9

}
10

}
11

public static String getBASE64(String s) {
12

if (s == null) return null;
13

return (new sun.misc.BASE64Encoder()).encode( s.getBytes() );
14

}
15

posted @ 2008-11-08 10:47 賀挺閱讀(1606) | 評論 (0) | 編輯收藏

靜態化頁面

1

public String getOneHtml(String htmlurl, String bianma) throws IOException {
2

URL url;
3

String temp;
4

final StringBuffer sb = new StringBuffer();
5

StringBuffer sb2 = new StringBuffer();
6

//因為htmlurl字符串中如果出現空白的字符就會出異常
7

String [] htmlurls=htmlurl.split(" ");
8

for (int i = 0; i < htmlurls.length; i++) {
9

if ("".equals(htmlurls[i])) {
10

continue;
11

}
12

sb2.append(htmlurls[i]);
13

}
14

try {
15

url = new URL(sb2.toString());
16

final BufferedReader in = new BufferedReader(new InputStreamReader(
17

url.openStream(), bianma));
18

while ((temp = in.readLine()) != null) {
19

sb.append(temp);
20

}
21

in.close();
22

} catch (final MalformedURLException me) {
23

// System.out.println("the url is error");
24

me.getMessage();
25

throw me;
26

} catch (final IOException e) {
27

e.printStackTrace();
28

throw e;
29

}
30

return sb.toString();
31

}

posted @ 2008-11-08 10:42 賀挺閱讀(163) | 評論 (0) | 編輯收藏

給div加虛線的css

你好這是一個虛線層

posted @ 2008-11-08 10:40 賀挺閱讀(469) | 評論 (0) | 編輯收藏

oracle的主鍵生成策略

<generator class="sequence"> <param name="sequence">seq_somename</param> </generator>

posted @ 2008-10-24 00:08 賀挺閱讀(305) | 評論 (0) | 編輯收藏

Ireport在瀏覽器中的顯示代碼

PDF:
(1)利用response的outputString輸出:

           response.setContentType("application/pdf");
                   //對應報表里面的Field
                  JRBeanCollectionDataSource jrb=new JRBeanCollectionDataSource(List或Set集合);
                  //Map集合對應報表里面的Parameter

byte[] pdfs=JasperRunManager.runReportToPdf(Test.class.getResourceAsStream("heting.jasper"), Map集合, jrb);

response.getOutputStream().write(pdfs, 0, pdfs.length);

(2)

Map parameters=new HashMap();

parameters.put("today", new Date());

List<Users> users=Make.getList();

JRBeanCollectionDataSource jrb=new JRBeanCollectionDataSource(users);

JasperPrint jasperPrint =

JasperFillManager.fillReport(Test.class.getResourceAsStream("heting.jasper"), parameters, jrb

);

JRXlsExporter exporter = new JRXlsExporter();

response.reset();

response.setContentType("application/vnd.ms-excel");

response.setHeader("Content-Disposition", "attachment;filename=\"aa.xls\"");

exporter.setParameter(JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS, Boolean.TRUE);

exporter.setParameter(JRXlsExporterParameter.IS_ONE_PAGE_PER_SHEET,Boolean.FALSE);

exporter.setParameter(JRXlsExporterParameter.IS_WHITE_PAGE_BACKGROUND, Boolean.FALSE);

exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);

exporter.setParameter(JRExporterParameter.CHARACTER_ENCODING, "GBK");

exporter.setParameter(JRExporterParameter.OUTPUT_STREAM,response.getOutputStream());

exporter.exportReport();

HTML:

JRBeanCollectionDataSource jrb=new JRBeanCollectionDataSource(users);

JasperPrint jasperPrint =

JasperFillManager.fillReport(Test.class.getResourceAsStream("heting.jasper"), parameters, jrb

);
JRHtmlExporter exporter = new JRHtmlExporter();

exporter.setParameter(JRHtmlExporterParameter.OUTPUT_FILE_NAME,ls_reportname+".htm");

exporter.setParameter(JRExporterParameter.CHARACTER_ENCODING, "GBK");

exporter.setParameter(JRHtmlExporterParameter.BETWEEN_PAGES_HTML, "<div style=\"page-break-after:always\"></div>");

exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);

exporter.setParameter(JRExporterParameter.OUTPUT_WRITER, response.getOutputStream());
exporter.exportReport();

EXCEL

JRBeanCollectionDataSource jrb=new JRBeanCollectionDataSource(users);

JasperPrint jasperPrint =

JasperFillManager.fillReport(Test.class.getResourceAsStream("heting.jasper"), parameters, jrb

);
JRHtmlExporter exporter = new JRHtmlExporter();

response.reset();

response.setContentType("application/vnd.ms-excel");

response.setHeader("Content-Disposition", "attachment;filename=\"" + ls_reportname + ".xls\"");

exporter.setParameter(JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS, Boolean.TRUE);

exporter.setParameter(JRXlsExporterParameter.IS_ONE_PAGE_PER_SHEET,Boolean.FALSE);

exporter.setParameter(JRXlsExporterParameter.IS_WHITE_PAGE_BACKGROUND, Boolean.FALSE);

exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);

exporter.setParameter(JRExporterParameter.CHARACTER_ENCODING, "GBK");

exporter.setParameter(JRExporterParameter.OUTPUT_STREAM,response.getOutputStream());
exporter.exportReport();

posted @ 2008-10-22 20:10 賀挺閱讀(636) | 評論 (2) | 編輯收藏

EJ3.0將EJB程序和WEb程序發布到weblogic10.3是出現的錯誤weblogic.wsee.async.AsyncResponseBean

Servlet: "weblogic.wsee.async.AsyncResponseBean" failed to preload on startup in Web application: "EJBDemoTest". com.sun.xml.ws.model.RuntimeModelerException: The web service defined by the class weblogic.wsee.async.AsyncResponseBean does not contain any valid WebMethods. at com.sun.xml.ws.model.RuntimeModeler.buildRuntimeModel(RuntimeModeler.java:262) at com.sun.xml.ws.server.EndpointFactory.createSEIModel(EndpointFactory.java:322) at com.sun.xml.ws.server.EndpointFactory.createEndpoint(EndpointFactory.java:188) at com.sun.xml.ws.api.server.WSEndpoint.create(WSEndpoint.java:467) at com.sun.xml.ws.api.server.WSEndpoint.create(WSEndpoint.java:510) at weblogic.wsee.jaxws.JAXWSDeployedServlet.getEndpoint(JAXWSDeployedServlet.java:182) at .........
不知道什么錯,只是將EJB工程打成jar包導入web程序中,將weblogin.jar包刪除(EJB工廠我導入過weblogin.jar),將從ejb工程拷過來的接口和實體類刪除了就可以解決
誰知道這個錯幫忙下留下足跡

posted @ 2008-10-16 10:23 賀挺閱讀(2826) | 評論 (2) | 編輯收藏

在做Urlwrite+struts2.0的一個小示例的時候老是出現找不到action的情況404錯誤

在網上百度了下，原來是要指定filter-mapping的dispatcher方式，如下

<filter-mapping>

<filter-name>Struts2</filter-name>

<url-pattern>/*</url-pattern>

<dispatcher>REQUEST</dispatcher>

<dispatcher>FORWARD</dispatcher>

</filter-mapping>

同時找到了其他的資源，這里記錄下
3、在做上傳文件的時候，要在web.xml中增加ActionContextCleanUp這個filter，如果不增加，會發生第一次上傳取不到文件的情況

<filter-name>struts-cleanup</filter-name>

<filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>

</filter>

<filter-mapping>

<filter-name>struts-cleanup</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

按照Struts2的API，filter的順序是
struts-cleanup filter
SiteMesh filter
FilterDispatcher

posted @ 2008-10-15 09:05 賀挺閱讀(547) | 評論 (0) | 編輯收藏

javax.naming.CommunicationException 的一個相關異常(已解決)

做ejb3.0的Demo的時候出現的一個反常錯誤,錯誤提示如下:
javax.naming.CommunicationException [Root exception is java.lang.ClassNotFoundException: ejb.facade.IFacade (no security manager: RMI class loader disabled)]
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:786)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:627)
at javax.naming.InitialContext.lookup(Unknown Source)
at make.Test.main(Test.java:29)
Caused by: java.lang.ClassNotFoundException: ejb.facade.IFacade (no security manager: RMI class loader disabled)
at sun.rmi.server.LoaderHandler.loadProxyClass(Unknown Source)
at java.rmi.server.RMIClassLoader$2.loadProxyClass(Unknown Source)
at java.rmi.server.RMIClassLoader.loadProxyClass(Unknown Source)
at sun.rmi.server.MarshalInputStream.resolveProxyClass(Unknown Source)
at java.io.ObjectInputStream.readProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at java.rmi.MarshalledObject.get(Unknown Source)
at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:72)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:710)
... 3 more
這個錯誤郁悶了我很久原來是我從服務器拷貝出來的接口和實體類到客戶端的時候他們在客戶端的包名與服務端所在的包名不一致是造成的, 服務端與客戶端jar必須完全一致。否則造成客戶端訪問時，客戶端須先從服務端下載，報安全許可異常。記下這個錯誤防止以后在做錯了

posted @ 2008-09-30 10:47 賀挺閱讀(11556) | 評論 (0) | 編輯收藏

heting

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