From d1f9d2acfa44c9667b3dfd5c9394bc5cc48c69fe Mon Sep 17 00:00:00 2001
From: liyiliang <735371210@qq.com>
Date: Sun, 19 Mar 2017 17:34:59 +0800
Subject: [PATCH] week2

---
 .../src/task2/week2/array/ArrayUtil.java      | 252 ++++++++++++++++++
 .../src/task2/week2/struts/LoginAction.java   |  39 +++
 .../src/task2/week2/struts/Struts.java        | 139 ++++++++++
 .../src/task2/week2/struts/StrutsTest.java    |  44 +++
 .../src/task2/week2/struts/View.java          |  23 ++
 .../src/task2/week2/struts/struts.out.xml     |   0
 .../src/task2/week2/struts/struts.xml         |  11 +
 7 files changed, 508 insertions(+)
 create mode 100644 group22/735371210/src/task2/week2/array/ArrayUtil.java
 create mode 100644 group22/735371210/src/task2/week2/struts/LoginAction.java
 create mode 100644 group22/735371210/src/task2/week2/struts/Struts.java
 create mode 100644 group22/735371210/src/task2/week2/struts/StrutsTest.java
 create mode 100644 group22/735371210/src/task2/week2/struts/View.java
 create mode 100644 group22/735371210/src/task2/week2/struts/struts.out.xml
 create mode 100644 group22/735371210/src/task2/week2/struts/struts.xml

diff --git a/group22/735371210/src/task2/week2/array/ArrayUtil.java b/group22/735371210/src/task2/week2/array/ArrayUtil.java
new file mode 100644
index 0000000000..22492679fa
--- /dev/null
+++ b/group22/735371210/src/task2/week2/array/ArrayUtil.java
@@ -0,0 +1,252 @@
+package task2.week2.array;
+
+public class ArrayUtil {
+	
+	public static void main(String[] args){
+		ArrayUtil t=new ArrayUtil();
+		int[] intArray={1,3,4};
+		int[] array1={1,4,5,8};
+		int[] array2={3,5,9};
+		
+		String str=t.join(intArray,"-");
+		
+		for(int i:t.merge(array1,array2)){
+			
+			System.out.println(i);
+		}
+		
+		
+	}
+	/**
+	 * 给定一个整形数组a , 对该数组的值进行置换
+		例如： a = [7, 9 , 30, 3]  ,   置换后为 [3, 30, 9,7]
+		如果     a = [7, 9, 30, 3, 4] , 置换后为 [4,3, 30 , 9,7]
+	 * @param origin
+	 * @return
+	 */
+	public void reverseArray(int[] origin){
+		
+		int temp=0;
+		for(int i=0;i<origin.length/2;i++){
+			
+			temp=origin[i];
+			origin[i]=origin[origin.length-i-1];
+			
+			origin[origin.length-i-1]=temp;
+		}
+		
+		
+	}
+	
+	/**
+	 * 现在有如下的一个数组：   int oldArr[]={1,3,4,5,0,0,6,6,0,5,4,7,6,7,0,5}   
+	 * 要求将以上数组中值为0的项去掉，将不为0的值存入一个新的数组，生成的新数组为：   
+	 * {1,3,4,5,6,6,5,4,7,6,7,5}  
+	 * @param oldArray
+	 * @return
+	 */
+	
+	public int[] removeZero(int[] oldArray){
+		int[] newArray =new int[oldArray.length];
+		int j=0;
+		
+		for(int i=0;i<oldArray.length;i++){
+			if(oldArray[i]!=0){
+				newArray[j]=oldArray[i];
+			}
+			
+		}
+		
+		return newArray;
+	}
+	
+	/**
+	 * 给定两个已经排序好的整形数组， a1和a2 ,  创建一个新的数组a3, 使得a3 包含a1和a2 的所有元素， 并且仍然是有序的
+	 * 例如 a1 = [3, 5, 7,8]   a2 = [4, 5, 6,7]    则 a3 为[3,4,5,6,7,8]    , 注意： 已经消除了重复
+	 * @param array1
+	 * @param array2
+	 * @return
+	 */
+	
+	public int[] merge(int[] array1, int[] array2){
+		int[] newArray= new int[array1.length+array2.length];
+		int size=0;
+		
+		int i1=0,i2=0;
+		while(i1<array1.length&&i2<array2.length){
+			if(array1[i1]==array2[i2]){
+				newArray[size]=array1[i1];
+				i1++;
+				i2++;
+				size++;
+				
+			}else if(array1[i1]<array2[i2]){
+				
+				newArray[size]=array1[i1];
+				i1++;
+				size++;
+				
+			}else{
+				
+				newArray[size]=array2[i2];
+				i2++;
+				size++;
+			}
+		}
+		
+		if(i1<array1.length){
+			newArray[size++]=array1[i1++];
+			
+		}
+		if(i2<array2.length){
+			newArray[size++]=array2[i2++];
+		}
+		return  newArray;
+	}
+	/**
+	 * 把一个已经存满数据的数组 oldArray的容量进行扩展， 扩展后的新数据大小为oldArray.length + size
+	 * 注意，老数组的元素在新数组中需要保持
+	 * 例如 oldArray = [2,3,6] , size = 3,则返回的新数组为
+	 * [2,3,6,0,0,0]
+	 * @param oldArray
+	 * @param size
+	 * @return
+	 */
+	public int[] grow(int [] oldArray,  int size){
+		
+		int[] newArray=new int[oldArray.length+size];
+		
+		for(int i=0;i<oldArray.length+size;i++){
+			if(i<oldArray.length){
+				newArray[i]=oldArray[i];
+			}
+		}
+		return newArray;
+	}
+	
+	/**
+	 * 斐波那契数列为：1，1，2，3，5，8，13，21......  ，给定一个最大值， 返回小于该值的数列
+	 * 例如， max = 15 , 则返回的数组应该为 [1，1，2，3，5，8，13]
+	 * max = 1, 则返回空数组 []
+	 * @param max
+	 * @return
+	 */
+	public int[] fibonacci(int max){
+		
+		int[] array=new int[max];
+		
+		if(max==1){
+			array[0]=max;
+		}else if(max==2){
+			array[0]=1;
+			array[1]=1;
+			
+		}else if(max>2){
+			array[0]=1;
+			array[1]=1;
+			int i=2;
+			
+			while(array[i-1]<max){
+				
+				array[i]=array[i-1]+array[i-2];
+				
+				i++;
+			}
+			
+			if(array[i-1]>=max){
+				array[i-1]=0;
+			}
+		}
+		
+		
+		return array;
+	}
+	
+	/**
+	 * 返回小于给定最大值max的所有素数数组
+	 * 例如max = 23, 返回的数组为[2,3,5,7,11,13,17,19]
+	 * @param max
+	 * @return
+	 */
+	public int[] getPrimes(int max){
+		
+		int[] newArray = new int[max];
+		if (max > 2) {
+
+			int size = 0, j = 0;
+			
+			for (int i = 2; i < max; i++) {
+				for (j = 2; j < i / 2 + 1; j++) {
+
+					if (i % j == 0) {
+
+						break;
+
+					}
+
+				}
+
+				if (j == i / 2 + 1) {
+					newArray[size++] = i;
+				}
+
+			}
+
+		}
+
+		return newArray;
+	}
+	
+	/**
+	 * 所谓“完数”， 是指这个数恰好等于它的因子之和，例如6=1+2+3
+	 * 给定一个最大值max， 返回一个数组， 数组中是小于max 的所有完数
+	 * @param max
+	 * @return
+	 */
+	public int[] getPerfectNumbers(int max){
+		int[] prefectArray=new int[max];
+		int k=0;
+		
+		for(int i=1;i<max;i++){
+			
+			int sum=0;
+			
+			for(int j=1;j<i;j++){
+				if(i%j==0){
+					sum+=j;
+				}
+			}
+			if(i==sum){
+				prefectArray[k]=sum;
+				k++;
+			}
+		}
+		return prefectArray;
+	}
+	
+	/**
+	 * 用seperator 把数组 array给连接起来
+	 * 例如array= [3,8,9], seperator = "-"
+	 * 则返回值为"3-8-9"
+	 * @param array
+	 * @param s
+	 * @return
+	 */
+	public String join(int[] array, String seperator){
+		String str="";
+		for(int i=0;i<array.length;i++){
+			if(i==array.length-1){
+				str+= array[i];
+				
+			}else{
+				str+= array[i]+seperator;
+			}
+		}
+		
+		return str;
+	}
+	
+
+}
+
+
diff --git a/group22/735371210/src/task2/week2/struts/LoginAction.java b/group22/735371210/src/task2/week2/struts/LoginAction.java
new file mode 100644
index 0000000000..8adf8450e6
--- /dev/null
+++ b/group22/735371210/src/task2/week2/struts/LoginAction.java
@@ -0,0 +1,39 @@
+package task2.week2.struts;
+
+/**
+ * 这是一个用来展示登录的业务类， 其中的用户名和密码都是硬编码的。
+ * @author liuxin
+ *
+ */
+public class LoginAction{
+    private String name ;
+    private String password;
+    private String message;
+
+    public String getName() {
+        return name;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public String execute(){
+            if("test".equals(name) && "1234".equals(password)){
+                this.message = "login successful";
+                return "success";
+            }
+            this.message = "login failed,please check your user/pwd";
+            return "fail";
+    }
+
+    public void setName(String name){
+        this.name = name;
+    }
+    public void setPassword(String password){
+        this.password = password;
+    }
+    public String getMessage(){
+        return this.message;
+    }
+}
diff --git a/group22/735371210/src/task2/week2/struts/Struts.java b/group22/735371210/src/task2/week2/struts/Struts.java
new file mode 100644
index 0000000000..29468acf16
--- /dev/null
+++ b/group22/735371210/src/task2/week2/struts/Struts.java
@@ -0,0 +1,139 @@
+package task2.week2.struts;
+
+import java.io.InputStream;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.dom4j.Document;
+import org.dom4j.DocumentException;
+import org.dom4j.Element;
+import org.dom4j.io.SAXReader;
+
+
+
+public class Struts {
+
+    public static View runAction(String actionName, Map<String,String> parameters) throws ClassNotFoundException, InstantiationException, IllegalAccessException, NoSuchMethodException, SecurityException, IllegalArgumentException, InvocationTargetException {
+
+        /*
+         
+		0. 读取配置文件struts.xml
+ 		
+ 		1. 根据actionName找到相对应的class ， 例如LoginAction,   通过反射实例化（创建对象）
+		据parameters中的数据，调用对象的setter方法， 例如parameters中的数据是 
+		("name"="test" ,  "password"="1234") ,     	
+		那就应该调用 setName和setPassword方法
+		
+		2. 通过反射调用对象的exectue 方法， 并获得返回值，例如"success"
+		
+		3. 通过反射找到对象的所有getter方法（例如 getMessage）,  
+		通过反射来调用， 把值和属性形成一个HashMap , 例如 {"message":  "登录成功"} ,  
+		放到View对象的parameters
+		
+		4. 根据struts.xml中的 <result> 配置,以及execute的返回值，  确定哪一个jsp，  
+		放到View对象的jsp字段中。
+        
+        */
+    	String jsp="";
+    	
+    	Map<String,String> viewParams=new HashMap<String,String>();
+    	
+    	Element ele=getNode(actionName);
+    	
+    	String className=ele.attributeValue("class");
+    	
+    	Class actionClass=Class.forName(className);
+    	
+    	Object action=actionClass.newInstance();
+    	
+    	for(Map.Entry<String, String> entry :parameters.entrySet()){
+    		
+    		
+    		Method m=actionClass.getMethod("set"+entry.getKey().substring(0,1).toUpperCase()+entry.getKey().substring(1), String.class);
+    		
+    		m.invoke(action, entry.getValue());
+    		
+    		
+    	}
+    	
+    	Method execute =actionClass.getMethod("execute");
+    	String result=(String)execute.invoke(action);
+
+    	System.out.println(result);
+    	
+    	Method[] methods=actionClass.getDeclaredMethods();
+    	
+    	for(Method m : methods){
+    		if(m.getName().startsWith("get")){
+    			String value =(String) m.invoke(action);
+    			
+    			String key=m.getName().substring(3);
+    			key=key.substring(0,1).toLowerCase()+key.substring(1);
+    			
+    			viewParams.put(key,value);
+    			
+    			
+    		}
+    	}
+    	
+    	for(Element e:(List<Element>) ele.elements("result")){
+    		
+    		if(e.attributeValue("name").equals(result)){
+    			
+    			 jsp=e.getText();
+    		}
+    		
+    	}
+    	
+    	View view=new View();
+    	view.setJsp(jsp);
+    	
+    	view.setParameters(viewParams);
+    	
+    	
+    	return view;
+    }    
+    
+    
+    public static Element getNode(String actionName){
+    	Element ele=null;
+    	
+    	SAXReader reader =new SAXReader();
+		
+		InputStream in =Struts.class.getResourceAsStream("struts.xml");
+		
+		try {
+			Document doc =reader.read(in);
+			Element root =doc.getRootElement();
+			
+	    	List<Element> childNode= root.elements();
+			
+			
+			for(Element e:childNode){
+			
+				if(e.attributeValue("name").equals(actionName)){
+					ele=e;
+					break;
+				}
+			
+			}
+		
+			
+		} catch (DocumentException ex) {
+			
+			ex.printStackTrace();
+		}
+			
+		return ele;
+	
+		
+    	
+    }
+    
+    
+
+}
+
diff --git a/group22/735371210/src/task2/week2/struts/StrutsTest.java b/group22/735371210/src/task2/week2/struts/StrutsTest.java
new file mode 100644
index 0000000000..4c9ad36231
--- /dev/null
+++ b/group22/735371210/src/task2/week2/struts/StrutsTest.java
@@ -0,0 +1,44 @@
+package task2.week2.struts;
+
+import java.lang.reflect.InvocationTargetException;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+
+
+
+
+public class StrutsTest {
+
+	@Test
+	public void testLoginActionSuccess() throws ClassNotFoundException, InstantiationException, IllegalAccessException, NoSuchMethodException, SecurityException, IllegalArgumentException, InvocationTargetException {
+		
+		String actionName = "login";
+        
+		Map<String,String> params = new HashMap<String,String>();
+        params.put("name","test");
+        params.put("password","1234");
+        
+        
+        View view  = Struts.runAction(actionName,params);        
+        
+        Assert.assertEquals("/jsp/homepage.jsp", view.getJsp());
+        Assert.assertEquals("login successful", view.getParameters().get("message"));
+	}
+
+	@Test
+	public void testLoginActionFailed() throws ClassNotFoundException, InstantiationException, IllegalAccessException, NoSuchMethodException, SecurityException, IllegalArgumentException, InvocationTargetException {
+		String actionName = "login";
+		Map<String,String> params = new HashMap<String,String>();
+        params.put("name","test");
+        params.put("password","123456"); //密码和预设的不一致
+        
+        View view  = Struts.runAction(actionName,params);        
+        
+        Assert.assertEquals("/jsp/showLogin.jsp", view.getJsp());
+        Assert.assertEquals("login failed,please check your user/pwd", view.getParameters().get("message"));
+	}
+}
diff --git a/group22/735371210/src/task2/week2/struts/View.java b/group22/735371210/src/task2/week2/struts/View.java
new file mode 100644
index 0000000000..9f5851bc8f
--- /dev/null
+++ b/group22/735371210/src/task2/week2/struts/View.java
@@ -0,0 +1,23 @@
+package task2.week2.struts;
+
+import java.util.Map;
+
+public class View {
+	private String jsp;
+	private Map parameters;
+	
+	public String getJsp() {
+		return jsp;
+	}
+	public View setJsp(String jsp) {
+		this.jsp = jsp;
+		return this;
+	}
+	public Map getParameters() {
+		return parameters;
+	}
+	public View setParameters(Map parameters) {
+		this.parameters = parameters;
+		return this;
+	}
+}
diff --git a/group22/735371210/src/task2/week2/struts/struts.out.xml b/group22/735371210/src/task2/week2/struts/struts.out.xml
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/group22/735371210/src/task2/week2/struts/struts.xml b/group22/735371210/src/task2/week2/struts/struts.xml
new file mode 100644
index 0000000000..b47a193398
--- /dev/null
+++ b/group22/735371210/src/task2/week2/struts/struts.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<struts>
+    <action name="login" class="task2.week2.struts.LoginAction">
+        <result name="success">/jsp/homepage.jsp</result>
+        <result name="fail">/jsp/showLogin.jsp</result>
+    </action>
+    <action name="logout" class="task2.week2.struts.LogoutAction">
+    	<result name="success">/jsp/welcome.jsp</result>
+    	<result name="error">/jsp/error.jsp</result>
+    </action>
+</struts>