heting

dwr中获取servletAPI

import uk.ltd.getahead.dwr.WebContext;

import uk.ltd.getahead.dwr.WebContextFactory;

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

HttpServletRequest request = ctx.getHttpServletRequest(); //通过WebContext获取Request

HttpSession session = ctx.getSession(); //通过WebContext获取Session

posted @ 2008-11-17 12:55 贺挺阅读(166) | 评论 (0) | 编辑收藏

子页面刷新父页面

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 贺挺阅读(975) | 评论 (1) | 编辑收藏

关于页面乱码的解决使用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 贺挺阅读(1599) | 评论 (0) | 编辑收藏

静态化页面

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

//因为htmlurl字符串中如果出现空白的字符就会出异常
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 贺挺阅读(160) | 评论 (0) | 编辑收藏

给div加虚线的css

你好这是一个虚线层

posted @ 2008-11-08 10:40 贺挺阅读(461) | 评论 (0) | 编辑收藏

oracle的主键生成策略

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

posted @ 2008-10-24 00:08 贺挺阅读(300) | 评论 (0) | 编辑收藏

Ireport在浏览器中的显示代码

PDF:
(1)利用response的outputString输出:

           response.setContentType("application/pdf");
                   //对应报表里面的Field
                  JRBeanCollectionDataSource jrb=new JRBeanCollectionDataSource(List或Set集合);
                  //Map集合对应报表里面的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 贺挺阅读(628) | 评论 (2) | 编辑收藏

EJ3.0将EJB程序和WEb程序发布到weblogic10.3是出现的错误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 .........
不知道什么错,只是将EJB工程打成jar包导入web程序中,将weblogin.jar包删除(EJB工厂我导入过weblogin.jar),将从ejb工程拷过来的接口和实体类删除了就可以解决
谁知道这个错帮忙下留下足迹

posted @ 2008-10-16 10:23 贺挺阅读(2791) | 评论 (2) | 编辑收藏

在做Urlwrite+struts2.0的一个小示例的时候老是出现找不到action的情况404错误

在网上百度了下，原来是要指定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>

同时找到了其他的资源，这里记录下
3、在做上传文件的时候，要在web.xml中增加ActionContextCleanUp这个filter，如果不增加，会发生第一次上传取不到文件的情况

<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的顺序是
struts-cleanup filter
SiteMesh filter
FilterDispatcher

posted @ 2008-10-15 09:05 贺挺阅读(544) | 评论 (0) | 编辑收藏

javax.naming.CommunicationException 的一个相关异常(已解决)

做ejb3.0的Demo的时候出现的一个反常错误,错误提示如下:
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
这个错误郁闷了我很久原来是我从服务器拷贝出来的接口和实体类到客户端的时候他们在客户端的包名与服务端所在的包名不一致是造成的, 服务端与客户端jar必须完全一致。否则造成客户端访问时，客户端须先从服务端下载，报安全许可异常。记下这个错误防止以后在做错了

posted @ 2008-09-30 10:47 贺挺阅读(11541) | 评论 (0) | 编辑收藏

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