Android - There is no android project named

You are trying to run your Library Project, if the project is not library

Right Click on the Project >> Properties >> Android >> In the right Panel Scroll down >> Uncheck isLibrary

android - "appcompat_v7" project is created automaticaly after

It's a support library which presumably your project refers to. You will need to build it as a library project in your workspace. This process is described here Support Library Setup under Adding libraries with resources.

You will find the project you need to copy in your SDK in the folder:

\yourSDKlocation\tools\android-sdk-windows4.4\extras\android\support\v7\appcompat

(It's no use just copying a jar, you must build it as a library project.)

iOS-解决"A valid provisioning profile for this executable was not found"

彈出了"A valid provisioning profile for this executable was not found"，即可執行 provisioning profile 沒有被找到。

解決方式是:

1、先檢查你的 provisioning profile 是否導入成功

 Organizer ——> Devices ——> 選中運行的真機 ——> provisioning profiles 查看

（我一般會這樣做：先刪除該機的所有的provisioning profiles，然後再選中該機，右鍵 Add device to provisioning portal ）

2、檢查 Project 和 Target 中的 Code Signing Identity 是否設置一樣

cannot find SDK (Could not find WindowsSDKDir variable from the registry)

你可嘗試rebuild一次.

[Shell Script] for loop 用法

arr=(aaa@example.com bbb@example.com ccc@example.com)

for ((i=0; i<${#arr[@]}; i++)); do  
 echo ${arr[$i]}     
done

輸出

aaa@example.com
bbb@example.com
ccc@example.com
初學者注意空格.

A Quick-Start Tutorial on Struts 2

Introduction

Structs, an open-source Apache project at http://struts.apache.org, is a MVC (Model-View-Controller) framework for creating user interfaces for Java web application. Struts is an extension of Java Servlets and JSP. Struts is in direct competition with JSF (Java Server Faces).
[TODO] struts functions, comparision of struts and JSF.

Develop and Deploy Struts Application on Tomcat

Before writing our first Struts program, I shall assume that you have installed and configured Tomcat server. I shall also assume that Tomcat is running on port 8080 and denote the Tomcat's installed directory as $CATALINA_HOME. (Otherwise, read "How to install Tomcat".)
I also assume that you understand basic Java server-side technologies such as Java Servlets, JSP (JavaServer Pages), and Java Web Applications.

Download the Sruts Runtime Libraries

1. Download the Struts runtime libraries from http://struts.apache.org. Select "Downloads" ⇒ "Releases" ⇒ Select the latest General Availability (GA) release, e.g., "Struts 2.1.8.1" ⇒ "Full Distribution" ⇒ "struts-2.1.8.1-all.zip".
2. Unzip.
3. The runtime libraries are kept in sub-directory "lib", which includes 71 jar-files. To deploy Struts application in Tomcat, these libaries must be available to Tomcat. You could copy the selected jar-files into Tomccat's "lib" directory (i.e., $CATALINA_HOME\lib), which will be available to all the web applications. You could also place the jar-files into a specific web context's "lib" directory, which will be available to only the particular web application.

Deploy and Run the Sample Applications Provided

The downloaded Struts package contains a few ready-to-deploy sample applications in directory "apps", in the form of war-files. In particular, a "blank" application template for which you can use to start writing your own codes. War-file (Web Application Archive) uses ZIP algorithm to compress and group files. You can extract the contents of war-file using WINZIP, WINRAR, or any other ZIP programs.
To deploy a sample application, simply copy the war-file into Tomcat's "webapps" directory ($CATALINA_HOME\webapps). Let's copy the "blank" sample application struts2-blank-2.1.8.1.war into Tomcat's "webapps". Start your Tomcat. The war-file will be unzipped and deployed automatically. Observer the following message in the Tomcat's console:

INFO: Deploying web application archive struts2-blank-2.1.8.1.war
May 1, 2010 11:32:41 AM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info
INFO: Parsing configuration file [struts-default.xml]
May 1, 2010 11:32:41 AM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info
INFO: Parsing configuration file [struts-plugin.xml]
May 1, 2010 11:32:41 AM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info
INFO: Parsing configuration file [struts.xml]

The following directories are extracted from the war-file under "webapps":
A Java web application has a standard directory for storing various type of files:

• "$CATALINA_HOME\webapps\struts2-blank-2.1.8.1": This directory is known as context root of the web application "struts2-blank-2.1.8.1", which keeps the "html", "jsp" files accessible by the users. In this example, the home page "index.html".
• "$CATALINA_HOME\webapps\struts2-blank-2.1.8.1\WEB-INF": This directory is hidden from user and keeps the configuration files. You keep the configuration file in this directory and program codes in its sub-directories. In this example, it contains a configuration file "web.xml" for configuring this web application.
• "$CATALINA_HOME\webapps\struts2-blank-2.1.8.1\WEB-INF\src": Keep the java program source files (optional).
• "$CATALINA_HOME\webapps\struts2-blank-2.1.8.1\WEB-INF\classes": Keep the java classes.
• "$CATALINA_HOME\webapps\struts2-blank-2.1.8.1\WEB-INF\lib": keep the runtime libraries (jar-files) for this application.
• "$CATALINA_HOME\webapps\struts2-blank-2.1.8.1\META-INF":

Start Tomcat. Obverse these message in the Tomcat's conosle:

May 1, 2010 4:18:56 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive struts2-blank-2.1.8.1.war
May 1, 2010 4:18:56 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info
INFO: Parsing configuration file [struts-default.xml]
May 1, 2010 4:18:57 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info
INFO: Parsing configuration file [struts-plugin.xml]
May 1, 2010 4:18:57 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info
INFO: Parsing configuration file [struts.xml]

To access the sample struts application, issue URL http://loaclhost:8080/struts2-blank-2.1.8.1 from a web browser. The home page "index.html" redirect to "example\Helloworld.jsp". Browse thru the source code of these pages.
Try http://loaclhost:8080/struts2-blank-2.1.8.1/example/Welcome.jsp, and browse thru the source codes for these pages in "example" sub-directory.

First Example: Hello-world

Let's write a Hello-world Struts application.

Define a new Web Context "hellostructs2" in Tomcat

• First of all, define a new web context (web application) called "hellostruts2" in Tomcat for our Struts Hello-world application, by creating the standard directory structure for the web context (as shown in the figure below). Create a directory called "hellostruts2", under the Tomcat's webapps directory ($CATALINA_HOME\webapps). Create a sub-directory "WEB-INF" under "hellostruts2". Create sub-directories: "classes", "lib" and "src" under "WEB-INF". Take note that the directory names are case-sensitive.
• Copy the struts runtime jar-file into "lib": commons-fileupload-1.2.1.jar, commons-io-1.3.2.jar, freemarker-2.3.15.jar, ognl-2.7.3.jar, struts2-core-2.1.8.1.jar, xwork-core-2.1.6.jar.

Configure "hellostruts2" - "web.xml" and "struts.xml"

Create the following web configuration file "web.xml". Save in "$CATALINA_HOME\webapps\hellostruts2\WEB-INF". The <filter> tag sets up the struts's dispatcher. The <filter-mapping> maps URL pattern "/*" (all requests under the root) to struts.

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.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>

Create the following configuration file for struts "struts.xml". Save in "$CATALINA_HOME\webapps\hellostruts2\WEB-INF\classes". An action called HelloWorld is declared, which is mapped to hello.HelloWorld class. If the action returns a string "Success", invoke "/response.jsp".

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
   
<struts>
  <package name="default" extends="struts-default">
    <action name="HelloWorld" class="hello.HelloWorld">
      <result name="Success">/response.jsp</result>
    </action>
  </package>
</struts>

Write the Hello-world Struts 2 Application

"input.jsp": save under the context root "$CATALINA_HOME\webapps\hellostruts2". This page is used to produce the following form:

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@taglib uri="/struts-tags" prefix="s" %>
   
<html>
<head>
  <title>Hello World</title>
</head>
<body>
  <h1>User Input Form</h1>
  <s:form action="HelloWorld" >
    <s:textfield name="name" label="Enter Your Name: " />
    <s:submit value="Send" />
  </s:form>
</body>
</html>

• The taglib directive declares the struts 2 tags, with prefix 's'.
• The <s:form> defines a HTML form, with processing action of "HelloWorld". The "HelloWorld" action is mapped to "hello.HelloWorld" class (in "struts.xml").
• The <s:textfield> define a text field element. The value will be captured in a field "name" of the "hello.HelloWorld" class.

Class "hello.HelloWorld": save as "hellostruts2\WEB-INF\src\hello\HelloWorld.java"

package hello;
   
public class HelloWorld {
    private String message;
    private String name;
  
    public String execute() {
        setMessage("Hello, " + getName());
        return "Success";
    }
  
    public String getMessage() {
        return message;
    }
  
    public void setMessage(String message) {
        this.message = message;
    }
  
    public String getName() {
        return name;
    }
  
    public void setName(String name) {
        this.name = name;
    }
}

• To compile this Java source code using JDK, change the current directory to "hellostruts2\WEB-INF", and use -d option to set the output directory:

  > javac -d classes src\hello\HelloWorld.java
  

• We need to define a execute() method, which returns a string. From "struts.xml", if the return result is "Success", forward to "\response.jsp".
• Two properties, name and message, are defined together with the public getters and setters.

"response.jsp": saved as "hellostruts2\response.jsp". This page accesses the "message" property of the class "hello.HelloWorld", and has a "Back" button to return to "/input.jsp".

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@taglib uri="/struts-tags" prefix="s" %>
   
<html>
<head>
  <title>Response Page</title>
</head>
<body>
  <h1><s:property value="message" /></h1>
  <s:form action="/input.jsp" >
    <s:submit value="Back" />
  </s:form>
   
</body>
</html>

Start Tomcat

Start the Tomcat server. Check for the following messages to confirm that web context "hellostruts2" has been started.

May 1, 2010 4:18:59 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory hellostruts2
May 1, 2010 4:18:59 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Parsing configuration file [struts-default.xml]
May 1, 2010 4:18:59 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Parsing configuration file [struts-plugin.xml]
May 1, 2010 4:18:59 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Parsing configuration file [struts.xml]

Run the Struts Application

Issue URL:

http://localhost:8080/hellostruts2/input.jsp

Try "View Source" the see the output produced by "input.jsp" and "response.jsp".

Remote Desktop Connection Client for Mac

Remote Desktop Connection Client for Mac 2.1.1 lets you connect from your Macintosh computer to a Windows-based computer and then work with applications and files on the Windows-based computer.

http://www.microsoft.com/en-us/download/details.aspx?id=18140