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分类: Java

2013-05-15 17:26:33

不用ide,编译时遇到下面错误
root@Nodin-OptiPlex-330:/home/fernando/deploy_bed_fbs_linux_ubuntu/tomcat/webapps/register/WEB-INF/classes/app# javac RegisterAction.java
RegisterAction.java:3: 软件包 org.apache.struts.action 不存在
import org.apache.struts.action.*;
^
RegisterAction.java:4: 软件包 javax.servlet.http 不存在
import javax.servlet.http.*;
^
RegisterAction.java:7: 找不到符号
符号: 类 Action
public class RegisterAction extends Action {
                                    ^
RegisterAction.java:9: 找不到符号
符号: 类 ActionMapping
位置: 类 app.RegisterAction
    public ActionForward perform (ActionMapping mapping, ActionForm form, HttpServletRequest req, HttpServletResponse res) {
                                  ^
RegisterAction.java:9: 找不到符号
符号: 类 ActionForm
位置: 类 app.RegisterAction
    public ActionForward perform (ActionMapping mapping, ActionForm form, HttpServletRequest req, HttpServletResponse res) {
                                                         ^
RegisterAction.java:9: 找不到符号
符号: 类 HttpServletRequest
位置: 类 app.RegisterAction
    public ActionForward perform (ActionMapping mapping, ActionForm form, HttpServletRequest req, HttpServletResponse res) {
                                                                          ^
RegisterAction.java:9: 找不到符号
符号: 类 HttpServletResponse
位置: 类 app.RegisterAction
    public ActionForward perform (ActionMapping mapping, ActionForm form, HttpServletRequest req, HttpServletResponse res) {
                                                                                                  ^
RegisterAction.java:9: 找不到符号
符号: 类 ActionForward
位置: 类 app.RegisterAction
    public ActionForward perform (ActionMapping mapping, ActionForm form, HttpServletRequest req, HttpServletResponse res) {
           ^
RegisterAction.java:12: 找不到符号
符号: 类 RegisterForm
位置: 类 app.RegisterAction
        RegisterForm rf = (RegisterForm) form;
        ^
RegisterAction.java:12: 找不到符号
符号: 类 RegisterForm
位置: 类 app.RegisterAction
        RegisterForm rf = (RegisterForm) form;
                           ^
RegisterAction.java:21: 找不到符号
符号: 变量 UserDirectory
位置: 类 app.RegisterAction
                UserDirectory.getInstance().setUser(username,password1);
                ^
RegisterAction.java:23: 找不到符号
符号: 类 UserDirectoryException
位置: 类 app.RegisterAction
            } catch (UserDirectoryException e) {
                     ^
12 错误

把jar放到同一目录,放到CLASSPATH的目录,都不行
然后用-classpath参数,有点起色。还必须用*.java,否则第二个编译的类RegisterAction.java找不到第一个编译的类RegisterForm,唉唉~,如下:

root@Nodin-OptiPlex-330:/home/fernando/deploy_bed_fbs_linux_ubuntu/tomcat/webapps/register/WEB-INF/classes/app# javac -classpath $CLASSPATH:struts.jar:.:jsp-api-2.0.jar:servlet-api-2.4.jar *.java
RegisterAction.java:21: 找不到符号
符号: 变量 UserDirectory
位置: 类 app.RegisterAction
                UserDirectory.getInstance().setUser(username,password1);
                ^
RegisterAction.java:23: 找不到符号
符号: 类 UserDirectoryException
位置: 类 app.RegisterAction
            } catch (UserDirectoryException e) {
                     ^
2 错误

添加UserDirectory类,为了方便去掉了exception
package app;

import java.io.IOException;
//import java.io.InputStream;
import java.io.FileOutputStream;
import java.util.Enumeration;
import java.util.Properties;

public class UserDirectory  {

    /**
     *
     */
    private static final String UserDirectoryFile =
        "resources/users.properties";


    /**
     *
     */
    private static final String UserDirectoryHeader =
        "${user}=${password}";

    /**
     *
     */
    private static UserDirectory userDirectory = null;


    /**
     *
     */
    private static Properties p;


    /**
     *
     */
    private UserDirectory() {// throws UserDirectoryException {

            java.io.InputStream i = null;
            p = null;
            i = this.getClass().getClassLoader().
                getResourceAsStream(UserDirectoryFile);


            if (null==i) {
                //throw new UserDirectoryException();
            }

            else {

                try {
                    p = new Properties();
                    p.load(i);
                    i.close();
                }

                catch (java.io.IOException e) {
                    p = null;
                    System.out.println(e.getMessage());
                    //throw new UserDirectoryException();
                }

                finally {
                    i = null;
                }

            } // end else

    } // end UserDirectory


    /**
     *
     */
    public static UserDirectory getInstance() {//throws UserDirectoryException {

        if (null==userDirectory) {

            userDirectory = new UserDirectory();

        }

        return userDirectory;

    }


    /**
     * Transform id so that it will match any conventions used by user
     * directory. The default implementation forces the id to
     * uppercase. Does not expect the userId to be null and
     * will throw a NPE if it is.
     *
     * @exception Throws Null Pointer Exception if userId is null.
     */
    public String fixId(String userId) {
       return userId.toUpperCase();
    }


    /**
     *
     */
    public boolean isValidPassword(String userId, String password) {

            // no null passwords
        if (null==password) return false;

            // conform userId to uppercase
        String _userId = fixId(userId);

            // no passwords for non-users
        if (!isUserExist(_userId)) return false;

            // does password match user's password
        return (password.equals(getPassword(_userId)));

    }


    /**
     *
     */
    public boolean isUserExist(String userId) {

            // no null users
        if (null==userId) return false;

            // if not null, it's a user
        return !(null==p.getProperty(userId));

    }


    /**
     *
     */
    public String getPassword(String userId)  {
          return p.getProperty(userId);
    }


    /**
     *
     */
    public Enumeration getUserIds()  {
       return p.propertyNames();
    }


    /**
     *
     */
    public void setUser(String userId, String password) {//throws UserDirectoryException {

            // no nulls
        if ((null==userId) || (null==password)) {
           // throw new UserDirectoryException();
        }


        try {

                // conform userId to uppercase when stored
            p.put(fixId(userId), password);
            p.store(new FileOutputStream(UserDirectoryFile),
            UserDirectoryHeader);

        }

        catch (IOException e) {

            //throw new UserDirectoryException();

       }
    }

} // end UserDirectory

并也简化了RegisterAction.java的exception
package app;

import java.io.IOException;
//import java.io.InputStream;
import java.io.FileOutputStream;
import java.util.Enumeration;
import java.util.Properties;

public class UserDirectory  {

    /**
     *
     */
    private static final String UserDirectoryFile =
        "resources/users.properties";


    /**
     *
     */
    private static final String UserDirectoryHeader =
        "${user}=${password}";

    /**
     *
     */
    private static UserDirectory userDirectory = null;


    /**
     *
     */
    private static Properties p;


    /**
     *
     */
    private UserDirectory() {// throws UserDirectoryException {

            java.io.InputStream i = null;
            p = null;
            i = this.getClass().getClassLoader().
                getResourceAsStream(UserDirectoryFile);


            if (null==i) {
                //throw new UserDirectoryException();
            }

            else {

                try {
                    p = new Properties();
                    p.load(i);
                    i.close();
                }

                catch (java.io.IOException e) {
                    p = null;
                    System.out.println(e.getMessage());
                    //throw new UserDirectoryException();
                }

                finally {
                    i = null;
                }

            } // end else

    } // end UserDirectory


    /**
     *
     */
    public static UserDirectory getInstance() {//throws UserDirectoryException {

        if (null==userDirectory) {

            userDirectory = new UserDirectory();

        }

        return userDirectory;

    }


    /**
     * Transform id so that it will match any conventions used by user
     * directory. The default implementation forces the id to
     * uppercase. Does not expect the userId to be null and
     * will throw a NPE if it is.
     *
     * @exception Throws Null Pointer Exception if userId is null.
     */
    public String fixId(String userId) {
       return userId.toUpperCase();
    }


    /**
     *
     */
    public boolean isValidPassword(String userId, String password) {

            // no null passwords
        if (null==password) return false;

            // conform userId to uppercase
        String _userId = fixId(userId);

            // no passwords for non-users
        if (!isUserExist(_userId)) return false;

            // does password match user's password
        return (password.equals(getPassword(_userId)));

    }


    /**
     *
     */
    public boolean isUserExist(String userId) {

            // no null users
        if (null==userId) return false;

            // if not null, it's a user
        return !(null==p.getProperty(userId));

    }


    /**
     *
     */
    public String getPassword(String userId)  {
          return p.getProperty(userId);
    }


    /**
     *
     */
    public Enumeration getUserIds()  {
       return p.propertyNames();
    }


    /**
     *
     */
    public void setUser(String userId, String password) {//throws UserDirectoryException {

            // no nulls
        if ((null==userId) || (null==password)) {
           // throw new UserDirectoryException();
        }


        try {

                // conform userId to uppercase when stored
            p.put(fixId(userId), password);
            p.store(new FileOutputStream(UserDirectoryFile),
            UserDirectoryHeader);

        }

        catch (IOException e) {

            //throw new UserDirectoryException();

       }
    }

} // end UserDirectory




遇到如下问题:
File "/WEB-INF/struts-form.tld" not found
根据链接看,是书中的小bug
改下register.jsp就行了


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