public void init() throws ServletException {
try{
Context ctx = new InitialContext();
HelloLocalHome home =(HelloLocalHome)ctx.lookup("java:comp/env/ejb/HelloLocalHome");
hello = home.create();
}catch(Exception e){
e.printStackTrace();
throw new ServletException(e.getMessage());
}
} public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String user = request.getParameter("user");
if (user == null||user.trim().length()==0) {
user = "world";
}
request.setAttribute("greetingStr",hello.greeting(user));
this.getServletContext().
getRequestDispatcher("/hello.jsp").
forward(request,response);;
}
try{
Context ctx = new InitialContext();
HelloLocalHome home =(HelloLocalHome)ctx.lookup("java:comp/env/ejb/HelloLocalHome");
hello = home.create();
}catch(Exception e){
e.printStackTrace();
throw new ServletException(e.getMessage());
}
} public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String user = request.getParameter("user");
if (user == null||user.trim().length()==0) {
user = "world";
}
request.setAttribute("greetingStr",hello.greeting(user));
this.getServletContext().
getRequestDispatcher("/hello.jsp").
forward(request,response);;
}
解决方案 »
- myEclipse8.5启动tomcat6.0时出错
- java连接oracle的提示错误
- struts2注解方式找不到namespace,帮帮忙
- Lucene2.0中的索引文件?
- 加急!高手们!请教你们个低级问题,怎样创建文件夹
- 请教大家一个struts标签的问题
- There is no Action mapped for namespace [/] and action name [] associated with c
- 关于BLOG技术问题???
- 请教:字符串修改的问题
- Spring动态代理核心详细概要
- 郁闷中,总是做不好JTable.请高手指点!!在线!!
- Help!和EJB第一次亲密--我的麻烦
String rs = delete.方法;
Sting是你的返回类型。class是你的ejb,scope是范围。id是你在jsp中用的名字。
public class SystemBugControlBean implements SessionBean {
SessionContext sessionContext;
public void ejbCreate() throws CreateException {
/**@todo Complete this method*/
}
public void ejbRemove() {
/**@todo Complete this method*/
}
public void ejbActivate() {
/**@todo Complete this method*/
}
public void ejbPassivate() {
/**@todo Complete this method*/
}
private SystemBugHome getSystemBugHome(){
SystemBugHome sbHome = null;
try {
Context ctx = new InitialContext();
Object o = ctx.lookup("SystemBug");
sbHome = (SystemBugHome) javax.rmi.PortableRemoteObject.narrow(o,
SystemBugHome.class);
}
catch (Exception e) {
e.printStackTrace();
return null;
}
return sbHome; }
public void setSessionContext(SessionContext sessionContext) {
this.sessionContext = sessionContext;
}
public Integer addSystemBug(SystemBugWrap sy) {
try{
SystemBugHome sbHome = this.getSystemBugHome();
SystemBug av = sbHome.create(null);
av.setCheckDate(sy.getCheckDate());
av.setCheckIdea(sy.getCheckIdea());
av.setCheckMan(sy.getCheckMan());
av.setCheckState(sy.getCheckState());
av.setModifyDateFrom(sy.getModifyDateFrom());
av.setModifyDateTo(sy.getModifyDateTo());
av.setModifyIdea(sy.getModifyIdea());
av.setModifyMan(sy.getModifyMan());
av.setModifyState(sy.getModifyState());
av.setTestContext(sy.getTestContext());
av.setTestDateFrom(sy.getTestDateFrom());
av.setTestDateTo(sy.getTestDateTo());
av.setTestMan(sy.getTestMan());
return av.getSystemBugID(); }catch(Exception ex){
ex.printStackTrace();
return null;
}
}
public boolean mondifySystemBug(SystemBugWrap sy) {
try {
SystemBugHome sbHome = this.getSystemBugHome();
SystemBug sb = sbHome.findByPrimaryKey(sy.getSystemBugID());
sb.setCheckDate(sy.getCheckDate());
sb.setCheckIdea(sy.getCheckIdea());
sb.setCheckMan(sy.getCheckMan());
sb.setCheckState(sy.getCheckState());
sb.setModifyDateFrom(sy.getModifyDateFrom());
sb.setModifyDateTo(sy.getModifyDateTo());
sb.setModifyIdea(sy.getModifyIdea());
sb.setModifyMan(sy.getModifyMan());
sb.setModifyState(sy.getModifyState());
sb.setTestContext(sy.getTestContext());
sb.setTestDateFrom(sy.getTestDateFrom());
sb.setTestDateTo(sy.getTestDateTo());
sb.setTestMan(sy.getTestMan());
}
catch (Exception e) {
e.printStackTrace();
return false;
}
return true; }
public SystemBugWrap getSystemBug(int SystemBugID) {
SystemBugWrap sbw = null;
try {
SystemBugHome sbHome = this.getSystemBugHome();
SystemBug sb = sbHome.findByPrimaryKey(new Integer(SystemBugID));
sbw = new SystemBugWrap();
sbw.setCheckDate(sb.getCheckDate());
sbw.setCheckIdea(sb.getCheckIdea());
sbw.setCheckMan(sb.getCheckMan());
sbw.setCheckState(sb.getCheckState());
sbw.setModifyDateFrom(sb.getModifyDateFrom());
sbw.setModifyDateTo(sb.getModifyDateTo());
sbw.setModifyIdea(sb.getModifyIdea());
sbw.setModifyMan(sb.getModifyMan());
sbw.setModifyState(sb.getModifyState());
sbw.setTestContext(sb.getTestContext());
sbw.setTestDateFrom(sb.getTestDateFrom());
sbw.setTestDateTo(sb.getTestDateTo());
sbw.setTestMan(sb.getTestMan());
}
catch (Exception e) {
e.printStackTrace();
return null;
}
return sbw;
}
public SearchToolsAddBean searchSystemBug(String queryString, int pageNum, int numPerPage) {
DataSource ds = null;
Connection conn = null;
Statement st = null;
ResultSet rs = null; Vector results = null;
SearchToolsAddBean stab = null;
SystemBugWrap sbw = null;
int rowsCount; try {
Context ctx = new InitialContext();
ds = (DataSource) ctx.lookup("DataSource");
conn = ds.getConnection();
st = conn.createStatement();
rs = st.executeQuery(queryString);
results = new Vector();
int fromRecord = (pageNum - 1) * numPerPage + 1;
int toRecord = fromRecord + numPerPage - 1;
stab = new SearchToolsAddBean();
for (rowsCount = 1; rowsCount < fromRecord; rowsCount++) {
if (!rs.next()) {
break;
}
} for (; rowsCount <= toRecord; rowsCount++) {
if (rs.next()) {
sbw = new SystemBugWrap();
sbw.setSystemBugID(new Integer(rs.getInt("SystemBugID")));
sbw.setCheckDate(rs.getTimestamp("checkDate"));
sbw.setCheckIdea(rs.getString("checkIdea"));
sbw.setCheckMan(rs.getString("checkMan"));
sbw.setCheckState(rs.getString("checkState"));
sbw.setModifyDateFrom(rs.getTimestamp("modifyDateFrom"));
sbw.setModifyDateTo(rs.getTimestamp("modifyDateTo"));
sbw.setModifyIdea(rs.getString("modifyIdea"));
sbw.setModifyMan(rs.getString("modifyMan"));
sbw.setModifyState(rs.getString("modifyState"));
sbw.setTestContext(rs.getString("testContext"));
sbw.setTestDateFrom(rs.getTimestamp("testDateFrom"));
sbw.setTestDateTo(rs.getTimestamp("testDateTo"));
sbw.setTestMan(rs.getString("testMan")); results.add(sbw);
}
else {
break;
}
}
while (rs.next()) {
rowsCount++;
}
stab.setContents(results);
stab.setTotalNum(new Integer(rowsCount - 1));
}
catch (Exception e) {
e.printStackTrace();
return null;
}
finally {
try {
if (rs != null) {
rs.close();
rs = null;
}
if (st != null) {
st.close();
st = null;
}
if (conn != null) {
conn.close();
conn = null;
}
if (ds != null) {
ds = null;
}
}
catch (Exception e) {
e.printStackTrace();
return null;
}
}
return stab;
}
}
EntityContext entityContext;
public java.lang.Integer ejbCreate(java.lang.Integer systemBugID) throws CreateException {
setSystemBugID(systemBugID); return null;
}
public void ejbPostCreate(java.lang.Integer systemBugID) throws CreateException {
/**@todo Complete this method*/
}
public void ejbRemove() throws RemoveException {
/**@todo Complete this method*/
}
public abstract void setSystemBugID(java.lang.Integer systemBugID);
public abstract void setTestMan(java.lang.String testMan);
public abstract void setTestContext(java.lang.String testContext);
public abstract void setTestDateFrom(java.sql.Timestamp testDateFrom);
public abstract void setModifyMan(java.lang.String modifyMan);
public abstract void setModifyState(java.lang.String modifyState);
public abstract void setModifyIdea(java.lang.String modifyIdea);
public abstract void setModifyDateTo(java.sql.Timestamp modifyDateTo);
public abstract void setCheckMan(java.lang.String checkMan);
public abstract void setCheckState(java.lang.String checkState);
public abstract void setCheckIdea(java.lang.String checkIdea);
public abstract void setCheckDate(java.sql.Timestamp checkDate);
public abstract void setTestDateTo(java.sql.Timestamp testDateTo);
public abstract void setModifyDateFrom(java.sql.Timestamp modifyDateFrom);
public abstract java.lang.Integer getSystemBugID();
public abstract java.lang.String getTestMan();
public abstract java.lang.String getTestContext();
public abstract java.sql.Timestamp getTestDateFrom();
public abstract java.lang.String getModifyMan();
public abstract java.lang.String getModifyState();
public abstract java.lang.String getModifyIdea();
public abstract java.sql.Timestamp getModifyDateTo();
public abstract java.lang.String getCheckMan();
public abstract java.lang.String getCheckState();
public abstract java.lang.String getCheckIdea();
public abstract java.sql.Timestamp getCheckDate();
public abstract java.sql.Timestamp getTestDateTo();
public abstract java.sql.Timestamp getModifyDateFrom();
public void ejbLoad() {
/**@todo Complete this method*/
}
public void ejbStore() {
/**@todo Complete this method*/
}
public void ejbActivate() {
/**@todo Complete this method*/
}
public void ejbPassivate() {
/**@todo Complete this method*/
}
public void unsetEntityContext() {
this.entityContext = null;
}
public void setEntityContext(EntityContext entityContext) {
this.entityContext = entityContext;
}
}这是jsp怎么调用:其中一段:
SystemBugControlHome amch = EJBUtil.getSystemBugControlHome();
SystemBugControl amc = amch.create();
得到amc后,就可以调用商业方法了,如: boolean ifadd = amc.add**(参数);
public class EJBUtil {
public EJBUtil() {
}
public static SystemBugControlHome getSystemBugControlHome() { SystemBugControlHome speciHome = null; try {
Context ctx = new InitialContext();
Object ref = ctx.lookup("SystemBugControl");
speciHome = (SystemBugControlHome) PortableRemoteObject.narrow(ref,
SystemBugControlHome.class);
}
catch (Exception e) {
System.out.println(e.getMessage());
}
return speciHome; }
}
<%@ page contentType="text/html; charset=GBK" %>
<%@ page import="java.util.*"%>
<%@ page import="javax.naming.*"%>
<%@ page import="javax.rmi.PortableRemoteObject"%>
<%@ page import="testejb.*"%>
<html>
<head>
<title>TestPage</title>
</head>
<body bgcolor="#ffffff">
<%
Context context = null;
Sample sample = null;
//获取Context
try
{
String url = "t3://192.168.1.130:7001";
String user = null;
String password = null;
Properties properties = null;
out.println("debug | ready to set property ... <br/>"); properties = new Properties();
properties.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
properties.put(Context.PROVIDER_URL, url);
if (user != null)
{
properties.put(Context.SECURITY_PRINCIPAL, user);
properties.put(Context.SECURITY_CREDENTIALS, password == null ? "" : password);
}
//
out.println("debug | ready to create context ... <br/>");
context = new InitialContext(properties);
}
catch (Exception ex)
{
out.println("<br/>创建Context对象出错:" + ex);
return;
} //查找Home接口,创建对象引用
try
{
//look up jndi name
Object ref = context.lookup("Sample");
//look up jndi name and cast to Home interface
SampleHome sampleHome = (SampleHome) PortableRemoteObject.narrow(ref, SampleHome.class); //
sample = sampleHome.create();
}
catch (Exception ex)
{
out.println("<br/>查找Home接口出错:" + ex);
return;
} //调用EJB对象
try
{
if (sample == null)
throw new Exception("EJBObject is null.");
//
Vector v_result = sample.getUserList();
while(!v_result.isEmpty())
out.println("<br/>\t" + v_result.remove(0));
}
catch (Exception ex)
{
out.println("调用EJB对象出错:" + ex);
}
%>
</body>
</html>