myeclipse9+struts-2.3.1.2+tomcat6.0做的第一个struts2

[xlh0053]

LoginAction.java：
import com.opensymphony.xwork2.ActionSupport;

public class LoginAction extends ActionSupport{
/**
*
*/
private static final long serialVersionUID = 1L;
private String username;
private String password;

//处理用户请求的execute方法
public String execute() throws Exception{
//如果用户名为“scott”，密码为“tiger”，则返回成功“success”;否则返回“error”
if(getUsername().equals("scott")&& getPassword().equals("tiger")){
return "success";
}
else{
return "error";
}
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
struts.xml
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="struts" extends="struts-default">
<action name="login" class="LoginAction">
<result name="error">/error.jsp</result>
<result name="success">/welcome.jsp</result>
</action>
</package>
</struts>

web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
<init-param>
<param-name>config</param-name>
<param-value>struts-default.xml,struts-plugin.xml,struts.xml</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
然后三个页面，为什么登陆不了呢，起始页面就会报错啊
2012-2-10 16:28:52 org.apache.catalina.core.AprLifecycleListener init
信息: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: E:\MyEclipse\Common\binary\com.sun.java.jdk.win32.x86_1.6.0.013\bin;E:\MyEclipse\Common\plugins\com.genuitec.eclipse.easie.tomcat.myeclipse_9.0.0.me201012172208\tomcat\bin
2012-2-10 16:28:52 org.apache.coyote.http11.Http11Protocol init
信息: Initializing Coyote HTTP/1.1 on http-8080
2012-2-10 16:28:52 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 328 ms
2012-2-10 16:28:52 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
2012-2-10 16:28:52 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/6.0.13
2012-2-10 16:28:53 org.apache.catalina.loader.WebappClassLoader validateJarFile
信息: validateJarFile(E:\JavaObject\.metadata\.me_tcat\webapps\struts2\WEB-INF\lib\javax.servlet.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
2012-2-10 16:28:54 org.apache.coyote.http11.Http11Protocol start
信息: Starting Coyote HTTP/1.1 on http-8080
2012-2-10 16:28:54 org.apache.jk.common.ChannelSocket init
信息: JK: ajp13 listening on /0.0.0.0:8009
2012-2-10 16:28:54 org.apache.jk.server.JkMain start
信息: Jk running ID=0 time=0/32 config=null
2012-2-10 16:28:54 org.apache.catalina.startup.Catalina start
信息: Server startup in 1459 ms
2012-2-10 16:28:58 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at org.apache.jsp.index_jsp._jspInit(index_jsp.java:23)
at org.apache.jasper.runtime.HttpJspBase.init(HttpJspBase.java:52)
at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:159)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:329)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)

[xlh0053]

错了，web.xml是这样的：<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.FilterDispatcher
</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

</web-app>

[wxahun]

报错是空值啊！
username和password没有get和set方法！你加上去就行了！
肯定是拿不到值啊java.lang.NullPointerException！


而且Sturts不是这样子用的！用户名和密码应该在对象里面!
private User user;//有了get set方法 才能拿到值！
public User getUser() {
return user;
}

public void setUser(User user) {
this.user = user;
}
if(user.getname.equals("admin")&&user.getpassword.equals("password")){
return "success";
}else{
return "error";
}

[ning5566]

JSP写错了 你把JSP贴出来

[xlh0053]

唉唉唉，人呢

[中草药代码]

你这个jar包是怎么回事
E:\JavaObject\.metadata\.me_tcat\webapps\struts2\WEB-INF\lib\javax.servlet.jar