diff --git a/group14/857999411/SecondHomework/.classpath b/group14/857999411/SecondHomework/.classpath
new file mode 100644
index 0000000000..158993c7d3
--- /dev/null
+++ b/group14/857999411/SecondHomework/.classpath
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/4"/>
+	<classpathentry kind="lib" path="lib/commons-beanutils-1.9.3.jar"/>
+	<classpathentry kind="lib" path="lib/commons-logging-1.1.1.jar"/>
+	<classpathentry kind="lib" path="lib/dom4j-1.6.1.jar"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>
diff --git a/group14/857999411/SecondHomework/.gitignore b/group14/857999411/SecondHomework/.gitignore
new file mode 100644
index 0000000000..ae3c172604
--- /dev/null
+++ b/group14/857999411/SecondHomework/.gitignore
@@ -0,0 +1 @@
+/bin/
diff --git a/group14/857999411/SecondHomework/.project b/group14/857999411/SecondHomework/.project
new file mode 100644
index 0000000000..1bcfdd57a3
--- /dev/null
+++ b/group14/857999411/SecondHomework/.project
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>SecondHomework</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>
diff --git a/group14/857999411/SecondHomework/.settings/org.eclipse.jdt.core.prefs b/group14/857999411/SecondHomework/.settings/org.eclipse.jdt.core.prefs
new file mode 100644
index 0000000000..3a21537071
--- /dev/null
+++ b/group14/857999411/SecondHomework/.settings/org.eclipse.jdt.core.prefs
@@ -0,0 +1,11 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.8
diff --git a/group14/857999411/SecondHomework/lib/commons-beanutils-1.9.3.jar b/group14/857999411/SecondHomework/lib/commons-beanutils-1.9.3.jar
new file mode 100644
index 0000000000..6728154e56
Binary files /dev/null and b/group14/857999411/SecondHomework/lib/commons-beanutils-1.9.3.jar differ
diff --git a/group14/857999411/SecondHomework/lib/commons-logging-1.1.1.jar b/group14/857999411/SecondHomework/lib/commons-logging-1.1.1.jar
new file mode 100644
index 0000000000..8758a96b70
Binary files /dev/null and b/group14/857999411/SecondHomework/lib/commons-logging-1.1.1.jar differ
diff --git a/group14/857999411/SecondHomework/lib/dom4j-1.6.1.jar b/group14/857999411/SecondHomework/lib/dom4j-1.6.1.jar
new file mode 100644
index 0000000000..c8c4dbb92d
Binary files /dev/null and b/group14/857999411/SecondHomework/lib/dom4j-1.6.1.jar differ
diff --git a/group14/857999411/SecondHomework/src/com/coderising/array/ArrayUtil.java b/group14/857999411/SecondHomework/src/com/coderising/array/ArrayUtil.java
new file mode 100644
index 0000000000..95be832836
--- /dev/null
+++ b/group14/857999411/SecondHomework/src/com/coderising/array/ArrayUtil.java
@@ -0,0 +1,264 @@
+package com.coderising.array;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+
+public class ArrayUtil {
+	
+	/**
+	 * 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 len =origin.length;
+		int [] newArray =new int[len];
+		
+		int j=0;
+		for(int i=len-1;i>=0;i--){
+			if(j<newArray.length){
+				newArray[j]=origin[i];
+				j++;
+			}
+		}
+		System.out.println(Arrays.toString(newArray));
+		for (int i : newArray) {
+			System.out.print(i+",");
+		}
+	}
+	
+	/**
+	 * 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 len = oldArray.length;
+		int [] midA=new int[len];
+		
+		int j=0;
+		int num=0;
+		for(int i=0;i<len;i++){
+			if(oldArray[i] != 0){
+				midA[j]=oldArray[i];
+				j++;
+				++num;
+			}
+		}
+		
+		int[] newA = Arrays.copyOf(midA, num);
+		
+		System.out.println(Arrays.toString(newA));
+		return newA;
+	}
+	
+	/**
+	 * 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){
+		ArrayList<Integer> list = new ArrayList<Integer>();
+		
+		if(array1[0] != array2[0]){
+			list.add(array1[0]);
+			list.add(array2[0]);
+		}else if(array1[0] == array2[0]){
+			list.add(array1[0]);
+		}
+		
+		int i =1;
+		for(int j=1;j<array1.length;j++){
+			if(array1[i-1] == array2[j]){
+				list.add(array1[i]);
+			}else if(array1[i] == array2[j-1]){
+				list.add(array2[j]);
+			}else if(array1[i] > array2[j]){
+				list.add(array2[j]);
+				list.add(array1[i]);
+			}else if(array1[i] < array2[j]){
+				list.add(array1[i]);
+				list.add(array2[j]);
+			}else if(array1[i] == array2[j]){
+				list.add(array1[i]);
+			}
+			i++;
+		}	
+
+			int[] newA =new int[list.size()];
+			
+			for(int k=0;k<newA.length;k++){
+				newA[k]=list.get(k);
+			}
+			
+			System.out.println(Arrays.toString(newA));
+			return newA;
+	}
+	/**
+	 * 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 len =oldArray.length+size;
+		int[] newA =new int[len];
+		
+		newA =Arrays.copyOf(oldArray, len);
+		System.out.println(Arrays.toString(newA));
+		return newA;
+	}
+	
+	/**
+	 * 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 f(int n){
+		return n>2?f(n-1)+f(n-2):1;
+	}
+	public int[] fibonacci(int max){
+		ArrayList<Integer> list =new ArrayList<Integer>();
+		for(int i=1; i<max; i++){
+			list.add(f(i));
+		}
+		
+		int num=0;
+		int [] newA =null;
+		for(int i=0; i<list.size(); i++){
+			if(max <= list.get(i+1)){
+				break;
+			}
+			num=i+1;
+		}
+		
+		newA =new int[num+1];
+		for(int i=0; i<=num; i++){
+			newA[i]=list.get(i);
+		}
+		for (int i : list) {
+			System.out.println(i);
+		}
+		for (int i : newA) {
+			System.out.println(i);
+		}
+		return newA;
+	}
+	
+	/**
+	 * 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){
+		ArrayList<Integer> list = new ArrayList<Integer>();
+		
+		int j;
+		for(int i=2; i<=max; i++){
+			j=2;
+			while(i%j != 0){
+				j++;
+			}
+			if(j == i){
+				list.add(i);
+			}
+		}
+		
+		for (Integer in : list) {
+			System.out.println(in);
+		}
+		
+		int num=0;
+		int [] newA =null;
+		for(int i=0; i<list.size(); i++){
+			if(max <= list.get(i+1)){
+				break;
+			}
+			num=i+1;
+		}
+		
+		int [] newA1 =new int[num+1];
+		for(int i=0; i<=num; i++){
+			newA1[i]=list.get(i);
+		}
+			
+		System.out.println(Arrays.toString(newA1));
+		
+		return newA1;
+	}
+	
+	/**
+	 * 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){
+		ArrayList<Integer> list = new ArrayList<Integer>();
+		
+		int s;
+	     for(int i=1;i<=10000;i++)
+	     {
+	        s=0;
+	        for(int j=1;j<i;j++)
+	            if(i % j==0)
+	               s=s+j;
+	           if(s==i)
+	             list.add(i);
+	     }
+	   
+	     
+	     int num=0;
+	     int [] newA =null;
+	     for(int i=0; i<list.size(); i++){
+			if(max <= list.get(i+1)){
+				break;
+			}
+			num=i+1;
+		}
+	     
+	     	int [] newA1 =new int[num+1];
+			for(int i=0; i<=num; i++){
+				newA1[i]=list.get(i);
+			}
+				
+			System.out.println(Arrays.toString(newA1));
+			
+			return newA1;
+	}
+	
+	/**
+	 * 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){
+		StringBuffer sb =new StringBuffer();
+		for(int i=0; i<array.length; i++){
+			if(i != array.length-1){
+				sb.append(array[i]);
+				sb.append(seperator);
+			}else if(i == array.length-1){
+				sb.append(array[i]);
+			}
+		}
+		return sb.toString();
+	}
+	
+
+}
diff --git a/group14/857999411/SecondHomework/src/com/coderising/litestruts/LoginAction.java b/group14/857999411/SecondHomework/src/com/coderising/litestruts/LoginAction.java
new file mode 100644
index 0000000000..dcdbe226ed
--- /dev/null
+++ b/group14/857999411/SecondHomework/src/com/coderising/litestruts/LoginAction.java
@@ -0,0 +1,39 @@
+package com.coderising.litestruts;
+
+/**
+ * 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/group14/857999411/SecondHomework/src/com/coderising/litestruts/Struts.java b/group14/857999411/SecondHomework/src/com/coderising/litestruts/Struts.java
new file mode 100644
index 0000000000..12ca731f67
--- /dev/null
+++ b/group14/857999411/SecondHomework/src/com/coderising/litestruts/Struts.java
@@ -0,0 +1,68 @@
+package com.coderising.litestruts;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Map;
+
+import org.apache.commons.beanutils.BeanUtils;
+import org.dom4j.Attribute;
+import org.dom4j.Document;
+import org.dom4j.Element;
+import org.dom4j.io.SAXReader;
+
+
+
+public class Struts {
+
+    public static View runAction(String actionName, Map<String,String> parameters) throws Exception {
+
+        /*
+         
+		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execute 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。
+        
+        */
+    	SAXReader reader = new SAXReader();
+    	Document doc = reader.read("./src/struts.xml");
+    	Element root = doc.getRootElement();
+    	Element el = root.element("action");
+    	Attribute attr = el.attribute("class");
+    	String value = attr.getValue();
+    	System.out.println(attr.getValue());
+    	
+    	
+    	Class<?> clazz = Class.forName(value);
+    	LoginAction login =(LoginAction) clazz.newInstance();
+    	
+    	Method setN = clazz.getMethod("setName", String.class);
+    	setN.invoke(login, "test");
+    	Method setP = clazz.getMethod("setPassword", String.class);
+    	setP.invoke(login, "1234");
+    	
+    	Method getM = clazz.getMethod("execute", null);
+    	String str = (String) getM.invoke(login, null);
+    	System.out.println(str);
+    	
+    	/*PropertyDescriptor pro = new PropertyDescriptor("name", LoginAction.class);
+    	Method readM = pro.getReadMethod();
+    	String message = (String) readM.invoke(login, null);*/
+    	
+    	String bean = BeanUtils.getProperty(login, "name");
+    	System.out.println(bean);
+    	return null;
+    }    
+
+}
diff --git a/group14/857999411/SecondHomework/src/com/coderising/litestruts/StrutsTest.java b/group14/857999411/SecondHomework/src/com/coderising/litestruts/StrutsTest.java
new file mode 100644
index 0000000000..92a6758a69
--- /dev/null
+++ b/group14/857999411/SecondHomework/src/com/coderising/litestruts/StrutsTest.java
@@ -0,0 +1,43 @@
+package com.coderising.litestruts;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+
+
+
+
+public class StrutsTest {
+
+	@Test
+	public void testLoginActionSuccess() throws Exception {
+		
+		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 Exception {
+		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/group14/857999411/SecondHomework/src/com/coderising/litestruts/View.java b/group14/857999411/SecondHomework/src/com/coderising/litestruts/View.java
new file mode 100644
index 0000000000..07df2a5dab
--- /dev/null
+++ b/group14/857999411/SecondHomework/src/com/coderising/litestruts/View.java
@@ -0,0 +1,23 @@
+package com.coderising.litestruts;
+
+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/group14/857999411/SecondHomework/src/com/coderising/litestruts/struts.xml b/group14/857999411/SecondHomework/src/com/coderising/litestruts/struts.xml
new file mode 100644
index 0000000000..e5d9aebba8
--- /dev/null
+++ b/group14/857999411/SecondHomework/src/com/coderising/litestruts/struts.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<struts>
+    <action name="login" class="com.coderising.litestruts.LoginAction">
+        <result name="success">/jsp/homepage.jsp</result>
+        <result name="fail">/jsp/showLogin.jsp</result>
+    </action>
+    <action name="logout" class="com.coderising.litestruts.LogoutAction">
+    	<result name="success">/jsp/welcome.jsp</result>
+    	<result name="error">/jsp/error.jsp</result>
+    </action>
+</struts>
\ No newline at end of file
diff --git a/liuxin/src/com/coderising/litestruts/struts.xml b/liuxin/src/com/coderising/litestruts/struts.xml
index dd598a3664..e5d9aebba8 100644
--- a/liuxin/src/com/coderising/litestruts/struts.xml
+++ b/liuxin/src/com/coderising/litestruts/struts.xml
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <struts>
-    <action name="login" class="com.coderising.action.LoginAction">
+    <action name="login" class="com.coderising.litestruts.LoginAction">
         <result name="success">/jsp/homepage.jsp</result>
         <result name="fail">/jsp/showLogin.jsp</result>
     </action>
-    <action name="logout" class="com.coderising.action.LogoutAction">
+    <action name="logout" class="com.coderising.litestruts.LogoutAction">
     	<result name="success">/jsp/welcome.jsp</result>
     	<result name="error">/jsp/error.jsp</result>
     </action>